USE OF SOIL CONSERVATION PRACTICES FOR CLIMATE CHANGE ADAPTATION AMONG ARABLE CROP FARMERS IN CROSS RIVER STATE, NIGERIA

Agube, Ejeje Igwe--- Ogbonna, Kalu, Ironbar

Department of Agricultural extension and Rural Sociology, University of Calabar, Cross River State, Nigeria

ABSTRACT

The study examined farmers’ use of soil conservation practices as strategies for climate change adaptation in Cross River State, Nigeria. A Multistage random sampling technique was used to draw 180 respondents for the study. Structured interview schedule was used to elicit data for the study while descriptive statistics was used for data analysis. Findings from the study revealed that all the respondents were aware of mulching (100%) and majority were aware of planting of cover crops (98.3%) and organic fertilizer (98.3%) among other SCP while some of the frequently utilized soil conservation practices were found to be mulching (mean – 2.95), mixed cropping (mean – 2.85), shifting cultivation (mean – 2.83), planting of cover crops (mean - 2.63) among other SCP. Population pressure on land ranked highest (mean = 2.64) as the most serious constraint to the use of soil conservation practices followed by effect of urbanization (mean = 2.53). The study concludes that arable crop farmers are aware of and are utilizing various soil conservation practices suitable to their local needs to cushion the impacts of climate change and recommends enactment of a law by governments that allows for localization of land for various purposes in order to reduce population pressure on arable land.

Keywords:Adaptation, Change climate, Crop farmers, Practices, Soil conservation, Strategies

ARTICLE HISTORY: Received:22-JUN-2018, Accepted:18-AUG-2018,Online Available: 03-SEP-2018

1. INTRODUCTION

Agricultural production and productivity is reliant on several factors such as soils and climate, genomic characteristics of crops and livestock etc. Danbaba (2007) opined that in all of these factors, climate is observed to be the utmost significant factor in crop husbandry. In the same vein, Antle, 2010 also reported that several components of agriculture and food system such as soil, water resources, crops and other components are predominantly susceptible to climate change.

According to United Nations Development Programme report (2001) the backbone of most developing economies is agriculture, with about 70 percent of the population involved in agricultural activities and residing in rural areas. In Nigeria, for example, agriculture which is largely rain fed has been and will continue to be the most important supplier of food and employment, providing employment between 65 -70 percent of its total populace. Therefore, any slight shift in climate will definitely affect agricultural productivity specifically and other economic and social activities nationwide.

Globally, the issue of climate change coupled with the continual increase in human population, showcases a remarkable food secu­rity challenge but the gigantic question is, ‘how will Nigeria assist in feeding the entire population of the world projected to increase by 2050 with further 2.4 billion people? This increase in world population coupled with climate could worsen additional issues, such as depletion of water resources, erosion, and desertification, degradation of water quality and deforestation, further hampering Nigeria ability to significantly contribute to solving the world’s food crises let alone its own. In addition, studies have reported that climate change is capable of increasing potential ero­sion rates, which can result in 10% to 20% decrease in agricultural productivity or more especially in extreme cases. Since there is a direct relation­ship between soil conservation techniques and sustaining and/or increas­ing output, studies have suggested that if the best soil conservation practices are not used, the possibility of sustaining the output levels required to feed more bil­lions of people by 2050 the world is projected to have, is in doubt; a reason why related studies have affirmed that these sound strategies/prac­tices will add to climate change adaptation and mitigation.

According to Eswaran et al. (2001) in the 20th century, land degradation was a significant world problem and has continued till date with its obvious effects on crop output, food security, quality of life and the environment. In Nigeria, Birte et al. (2008) documented that the total runoff-induced soil losses in the south was estimated to be 693,000 km2 while total soil degradation in the north was estimated to be 231,000 km2, largely through wind erosion. These facts are enough reasons why soil conservation practices ought to be taken seriously in Nigeria. These practices will not only improve the soil but to a greater extent be adopted as adaptation strategies to cushion effects of a changing climate.

Soil conservation is a set of management strategies for the prevention of soil being eroded from the earth’s surface or becoming chemically altered by over use, Salinization, acidification, or other chemical soil contaminations (Ezeaku, 2012). It comprises the combination of all methods of management and land use to guard against soil depletion or deterioration by natural or man-induced factors such as planting of cover crops, bush fallowing, conservation tillage, organic fertilizer, agro-forestry, mulching, alley farming etc.  (Dimelu et al., 2012). Highlighting on the importance of soil conservation practices, Dumaski et al. (2006) opine that soil conservation efforts of farmers promote minimum disturbance of the soil by tillage, balance application of chemical inputs which are only required for improved soil quality for healthy crop and animal production with careful management. Accordingly, effective soil conservation practices reduce land and water pollution; reduce long-term dependency on external inputs which often times led to increased cost of production, enhance environmental management, improved water quality and water use efficiency, reduced emission of greenhouse gases through lessened use of fossil fuel and finally improved agricultural productivity with minimum cost (Smith and Smithers, 2006). Thus, the common objective of soil conservation is the improvement of crop production and environmental protection (Pla, 2014). According to Abdul-hanan et al. (2014), at the onset of climate change, the adoption of soil and water conservation techniques in Sub Saharan Africa has become even more crucial.

Empirical studies on the use of soil and water conservation abound in Africa and other parts of the world. Currently, Mekuriaw and Hurni (2017) finding in a related study revealed that a large percentage (87%) of farmers in Ethopian high-potential areas used physical soil and water conservation measures to keep the soil on their cultivated land and to improve yields while in low-potential areas, nearly all farmlands in the sample that required physical soil and water structures were terraced and thus able to minimize the rate of soil erosion and improved ecosystem services. In a similar study undertaken by Ashoori et al. (2016) in paddy fields of Guilan Province, Iran; finding from study revealed that a good percentage of farmers implemented agronomic soil and water conservation measures such as ratoon cropping, crop rotation, use of compost or manure and conservation tillage while a considerably lower percentage of farmers implemented physical soil and water conservation measures such as bunds and terracing etc. in the study area.

From the foregoing, it is important to identify the various soil conservation practices that are utilized by arable crop farmers in Cross River State to cushion the menace of soil erosion and land degradation as a result of the impact of climate change in order to create resistance in climate change and adaptation practices into contemporary procedures. In so doing, crop farmers will be encouraged to adopt sustainable soil management practices which are effective in assisting them to adapt to a changing climate. . It is expected that if farmers adopt these adaptation strategies viz-a-viz soil conservation practices, on-farm vulnerabilities will be considerably reduced resulting in increase in yields of farmers and income which will in turn improve their living standard.

Although, in Nigeria few studies on soil conservation practices used as soil conservation practices have been documented (Mishra and Rais, 2013; Fapojuwo et al., 2012; Dimelu et al., 2012; Jorge et al., 2012; Birte et al., 2008), it appears there is little or no research undertaken on soil conservation practices used as climate change adaptation strategies in Cross River State.  However, this study will attempt to fill the gap identified for a sound policy formulation on climate change adaptation strategies suited to their local needs through soil conservation practices.

2. OBJECTIVES OF THE STUDY

The main objective of this study is to ascertain the use of soil conservation practices as strategies for climate change adaptation among arable crop farmers in Cross River State. The specific objectives are to;

  1. Describe the socio-economic characteristics of the farmers in the study area.
  2. Ascertain respondents’ awareness of soil conservation practices as climate change adaptation strategies.
  3. Determine respondents’ use of soil conservation practices as strategies for climate change adaptation in the study area.
  4. Identify the constraints to the use of soil conservation practices as strategies for climate change adaptation in the study area.

3. MATERIALS AND METHODS

The study was conducted in Cross River State, Nigeria. The state lies within longitude 40 50’ and 90 28’ East of the Greenwich Meridian and latitude 50 23’ and 40 27’ North of the equator (Ofem et al., 2013). The state has a landmass of 22,342.176 square kilometres (Adinya, 2009) with a total population estimate of 3,862 634 people (National Population Census, 2006). Cross River State is located within the tropical rainforest belt.  It records heavy rainfall during the wet season, usually from April to October and severe sunshine during the dry season, usually from November to March.

The soils of the state are ultisols and alfisols but predominantly ultisols (FAO/UNESCO, 1974).  The major occupation of the people is farming. The population for the study constituted of all arable crop farmers in the state. Data for the study was collected with the use of structured interview schedule. Multistage random selection technique was used in the selection of respondents for the study. In stage one, a simple random technique was used to select one block per agricultural zone out of the three zones in the state. This gives a total of three blocks. These selected blocks include, Biase, Ikom, and Ogoja each in Calabar, Ikom and Ogoja agricultural zone respectively. This was done in order to have a representative sample from each zone since each zone differs ecologically. The second stage was the selection of three cells from each block using simple random selection techniques, giving a total of 9 cells for the study.These selected cells include Ishibori, Ekajuk and Mbube in Ogoja block, Akparabong, Okuni and Nde in Ikom block and Adim, Akpet and Ehom in Biase block each representing Ogoja, Ikom and Calabar agricultural zones respectively. Lastly, twenty arable crop farmers were selected from a list of arable crop farmers provided by field extension agents using simple random selection technique. Therefore, total sample size of 180 respondents was used for the study. Seventeen soil conservation practices disseminated across the three zones in the state were all selected for the survey. They include,application of mulches, planting of cover crops, conservation tillage, liming, terracing, contouring, organic and inorganic fertilizers, crop rotation, shifting cultivation, ridging, land rotation, bush fallowing, liming, alley farming, agroforestry and planting of windbreak.

To obtain a quantitative measure for respondents awareness of soil conservation practices, for each item, a dummy (aware = 1 for satisfactory awareness of each item and not aware = 0) were assigned to the variables. A three point grading scale with response categories of always use (AU) = 3, rarely use (RU) = 2 and never use (NU) = 1 was used on seventeen items (soil conservation practices) and was used to measure the extent of use of soil Conservation practices as climate change adaptation strategies. A mean score of 2 was then obtained. Items with mean score above or equal 2 were considered used by the respondents while items with mean scores less than 2 were considered not used by the respondents. Finally, A three point grading scale with response categories of very serious (VS) = 3, serious (S) = 2 and not serious (NS) = 1 was used on eleven items (constraints to the use of soil conservation practices) to measure objective 5. A mean score of 2 was then obtained. Items with mean value or score above or equal to 2 were considered as serious constraints faced by arable crop farmers to the use of soil conservation practices and vice versa. The mean for each item was obtained and ranked accordingly. Generally, descriptive statistics was used to analyze the objectives with the help of SPSS edition 20.

4. RESULTS AND DISCUSSION

4.1. Socio-economic characteristics of the respondents

Based on the result of the analysis under socio-economic profiling of the respondents as presented in Table, the reveals that majority (52.8%) of the respondents were males while 47.2% were females. Although, the result reveals that the percentage of males that are into arable crop production is higher than that of the females but the percentage difference is quite low indicating that both males and females are involved in arable crop production. However, according to Fapojuwo et al. (2012) access and control of resources and land tenure system tend to favour the men, thus warranting their greater involvement in arable crop production.

Most (41.1%) of the respondents were between 30 – 39 years, only 1.7% were aged below 30 years. This result reveals that majority of the respondents were in their active and prime years thus supporting the findings of Sabo (2006) that middle aged farmers were necessary since farming demands much energy. According to Surry (1997), individual’s efficiency tend to be high and activities are approached with seriousness when one is young and agile.

Most (32.8%) of the respondents had Secondary School Certificate and First School Leaving Certificate (32.8) as the highest educational qualification attained respectively while only 22.2% had no formal education. This result reveals that majority of the respondents were predominantly literate. This high literacy level among farmers usually speeds up communication and information flow and the transfer of new innovations or technologies like soil conservation practices. This finding agrees with Angba and Ogar (2012) study where only 2.5% and 22.9% respondents had tertiary and no formal education respectively. Aboh (2010) reported a high correlation between education and cassava farmers’ productivity in rural communities of Akwa Ibom State.

However, 78.3% of the respondents were married and are still living with their spouses while only 1.7% were single. This finding implies that majority of the respondents were married with families to fend for. The high proportion of married respondents according to Elemi (2014) could be related to socio cultural factor where land is only handed over to individuals who are married.

A greater percentage (63.9%) of the respondents had between 5 – 10 household sizes while only 0.6% had above 15 household sizes. This large number of household size is in line with Effiong (2005), who posited that a relatively large household size enhances the availability of family labour which reduces constraints on labour cost in agricultural production. World Bank (1999) also reported that the proportion of rural poor household increases as the size of family becomes larger.

It was also found out that 72.2% of the respondents had between 10 – 20 years of farming experience while only 0.6% had between 31 – 40 years’ experience in farming. This finding shows that majority of the farmers have over 10 years of farming experience. Farming experience plays a very important role in agribusiness or farm enterprise. Fapojuwo (2012) noted that with long years of farming experience these soil conservation techniques also double up as climate change adaptation strategies used by arable crop farmers in order to still keep them in the farming business. 

Near half (48.9%) of the respondents had farm sizes between 1-3 hectares. This implies that majority of the respondents are small scale arable crop farmers, which is typical of most farmers in Nigeria in particular and Africa at large. This result agrees with the view of Eric (1996), cited in Ajayi and Solomon (2010) that small farming holdings constitute more than 70.0% of all farming activities in Nigeria.

Majority (39.4%) of the respondents had the highest monthly income of N21, 000.00 – N30, 000.00 while only 3.3% had monthly income of N10, 000.00 and below. Economic factor that determine farm practices in the opinion of Onasanya (2007) also include farmers’ income access to soil enhancing input, educational level, farm size or number of farm plots etc. Majority (47.2%) of the respondents had no contact at all with extension agents while 34.4% had contact with extension agents monthly. According to FAO (2005), frequency of farmers contact with extension will increase in direct relationship to the ease of access by farmers in a social context.

Table 1: Frequency distribution of the socioeconomic characteristics of respondents
Description of variables
Frequency
Percentage
i. Gender
 
 
Male
95
52.8
Female
85
47.2
Total
180
100
ii. Age
Below 30
3
1.7
30 – 39
74
41.1
40 -49
66
36.7
50 & Above
37
20.6
Total
180
100
iii. Educational Level
No Formal Education
40
22.2
FSLC
59
32.8
SSCE
59
32.8
OND/NCE
16
8.9
B.Sc./HND
6
3.3
Total
180
100
iv Marital Status
Single
3
1.7
Married
141
78.3
Divorced
9
5.0
Widowed
15
8.3
Separated
12
6.7
Total
180
100
v. Household Size
Less Than 5
54
30.0
5 – 10
115
63.9
11 – 15
10
5.6
Above 15
1
0.6
Total
180
100
vi. Farm Size
Less Than 1
27
15.0
1 -3
88
48.9
4 -6
63
35.0
Above 6
2
1.1
Total
180
100
vii. Years of Farming Experience
Less Than 10
22
12.2
10 – 20
130
72.2
21 – 30
26
14.4
31 – 40
1
0.6
Above 40
1
0.6
Total
180
100
viii. Income
N10,000  & Below
6
3.3
N11,000 –  N20,000
65
36.1
N21,000 –  N30,000
71
39.4
N31,000 & Above
38
21.1
Total
180
100
ix. Contact With Extension Agent
Not at All
85
47.2
Weekly
10
5.6
Monthly
62
34.4
Quarterly
23
12.8
Total
60
100

Field Survey, 2014


4.2. Awareness of soil conservation practices

Based on the result of the analysis of respondents’ awareness of soil conservation practices as climate change adaptation strategies as displayed in Table 2, the result shows that, all the respondents (100%) were aware of mulching and 98.9% were aware of inorganic fertilizer, shifting cultivation, bush fallowing and mixed cropping respectively among others as climate change adaptation strategies. However, only terracing, contouring, liming and alley farming that the respondents were not aware of.

This finding implies that arable crop farmers were quite aware of different climate change adaptation strategies that can enhance their yield and productivity. The findings are in conformity with Fapojuwo et al. (2012); Akinbile and Odebode (2007) and Iheke and Onyenorah (2010) studies where majority of the respondents were aware of mulching, organic fertilizer, multiple or mixed cropping, crop rotation etc. to conserve the soil. Araya and Adjaye (2001) and Anim (1999) reported that farmers awareness and perceptions of soil erosion problem as a result of changes in climate, positively and significantly affected their decisions to adopt soil conservation measures. In the same vein, Hassan and Nhemachena (2008) noted that awareness of climate problems and the potential benefits of taking action are important determinants of adoption of agricultural technologies while Yohe and Tol (2002) added that  these adaptive capacity/strategies vary significantly from system to system, sector to sector and region to region due to range of available technological options for adaptation, availability of resources and their distribution across the population and stock of human capital with respect to education and security among others. This non- awareness of terracing and contouring according to Fapojuwo et al. (2012) might be due to their complexities and newness to  farmers and could not be adopted because of inadequate knowledge and are only applicable in hilly areas.

Table 2: Distribution of arable farmers’ by awareness of soil conservation Practice (n = 180)
Soil conservation practices
Aware (%)
Not aware (%)
Mulching
180(100)
-
Planting cover crops
177(98.3)
3(1.7)
Terracing
44(24.4)
136(75.6)
Contouring
96(53.3)
84(46.7)
Organic fertilizer
179(99.4)
1(0.6)
Inorganic  fertilizer
178(98.9)
2(1.1)
Crop rotation
163(90.6)
17(9.4)
Shifting cultivation
178(98.9)
2(1.1)
Ridging
129(71.7)
51(28.3)
Land rotation
103(57.2)
77(42.8)
Bush fallowing
178(98.9)
2(1.1)
Conservation tillage
174(96.7)
6(3.3)
Liming
68(37.8)
112(62.2)
Mixed cropping
178(98.9)
2(1.1)
Alley farming
81(45.0)
99(55.0)
Agroforestry
166(92.2)
14(7.8)
Planting windbreak
171(95.0)
9(5.0)

Field Survey, 2014: Multiple responses


4.3. Farmers’ Use of soil conservation practices

Based on the result of the analysis on the use of soil conservation practices by arable crop farmers as depicted in table 3, the result shows that respondents’ use of soil conservation practices ranked highest for use of mulching with a mean value of 2.95. This is followed by mixed cropping (2.84), shifting cultivation (2.83), bush fallowing (2.79), planting of cover crops (2.63), organic fertilizer and inorganic fertilizer (2.56), conservation tillage and planting windbreaks (2.41) respectively. This finding is in conformity with Akinbile and Odebode (2007) where respondents used cover cropping, multiple cropping, fallow system, organic manure etc. to conserve the soil and  also agrees with Dimelu et al. (2012) finding which revealed that farmers commonly used both agronomic, soil management and mechanical strategies of soil conservation as strategies for climate change adaptation and further explained that either practices is important because they affect chemical, physical and biological properties of the soil. For instance, Olaitan and Omamia (2006) opined that agronomic soil conservation practices (cover crops, mulching, fallowing and others) are used to provide surface covers to reduce erosion by water and wind in order to conserve the soil, protect the soil from direct sun rays and enrich the soil by the decay of their fallen leaves while some reduces the risk of serious pest and disease outbreaks. Also emphasizing on its importance, Agele et al. (2000) pointed out that the crop residues released reduce the soil temperature by some degree in the upper centimetres of the top soil and offer better moisture conservation by decreasing the intensity of radiation, wind velocity and evaporation and concluded that, it is these elements that enhanced its prospects for climate change adaptation and mitigation. However, the finding also revealed that terracing, contouring, ridging crop rotation, land rotation etc. were not used by arable farmers in the study area. Birte et al. (2008) noted that  although, farmers were not generally aware of and unable to use mechanical soil conservation practices such as terraces and contours, the practices are effective soil conservation technologies as they reduce soil loss, but because the installation and maintenance is typically labour intensive, they are not commonly  adopted by farmers even though they are both adaptive and mitigation measures to climate variability and when used, excessive soil and wind erosion, loss of degraded lands, and silting up of the field are reduced. The mitigation potentials are also achieved through carbon sequestration (absorption of carbon from the atmosphere) by tree planting or vegetative barrier.

Table 3: Mean distribution of arable farmers’ use of soil conservation practices as climate change adaptation strategies(n =180)

Practices
Always use
Rarely use
Never use
Mean
SD
Mulching
171(95.0)
9(5.0)
-
2.95
0.219
Planting cover crops
116(64.4)
62(34.4)
2(1.1)
2.63
0.506
Terracing
--
3(1.7)
177(96.3)
1.02
0.128
Contouring
4(2.2)
23(12.8)
153(85.0)
1.17
0.434
Organic fertilizer
103(57.2)
74(41.1)
3(1.7)
2.56
0.531
Inorganic fertilizer
105(58.3)
68(37.8)
7(3.9)
2.56
0.581
Crop rotation
15(8.3)
68(37.8)
97(53.9)
1.54
0.655
Shifting cultivation
152(84.4)
22(12.2)
5(2.8)
2.83
0.456
Ridging
15(8.3)
114(7.8)
151(83.9)
1.24
0.594
Land rotation
16(8.9)
47(26.1)
117(65.0)
1.44
0.653
Bush fallowing
147(81.7)
28(15.6)
5(2.8)
2.79
0.473
Conservation tillage
87(48.3)
80(44.4)
13(7.2)
2.41
0.623
Liming
4(2.2)
9(5.0)
167(92.8)
1.09
0.362
Mixed cropping
161(89.4)
9(5.0)
10(5.6)
2.84
0.498
Alley farming
19(10.6)
30(16.7)
131(72.8)
1.38
0.670
Agroforestry
30(16.7)
96(953.3)
54(30.0)
1.87
0.672
Windbreaks
90(70.0)
71(39.4)
19(10.6)
2.41
0.675

Source: field survey2014


4.4. Constraints to the use of soil conservation practices

Table 5 shows the distribution of respondents based on the constraints encountered in the use of soil conservation practices as climate change adaptation strategies. Based on the result of the analysis, population pressure on land ranked first (2.64) followed by effect of urbanization (2.53) among others. However, inadequate labour (mean =1.82) ranked least. This implies that the most serious constraints encountered by the respondents in the study area were population pressure on land followed by effect of urbanization. The finding is in line with Fapojuwo et al. (2012) result where major constraints affecting the use of soil conservation practices were population pressure on the land/effect of urbanization, lack of knowledge on soil conservation techniques and inadequate information and education. The result supports the importance of training and extension service in providing information to farmers on different techniques/strategies. Thus, Ajayi and Oloruntoba (2004) in Ajayi and Solomon (2010) reported that adequate information and follow up were useful in the adoption and continuous used of improved technologies and techniques like soil conservation by farmers.

Table 4: Respondents’ constraints to the use of soil conservation practices as climate change adaptation strategies   (n =180)

Constraints                 
VS
S
NT
Mean
SD
Rank
Population pressure on land
120(66.7)
56(31.1)
4(2.2)
2.64
0.525
1
Effect of urbanization
98(54.4)
79(43.9)
3(1.7)
2.53
0.533
2
Lack of knowledge on SCP
106(58.9)
61(33.9)
13(7.2)
2.52
0.630
3
Inadequate information / education
99(55.0)
71(39.4)
10(5.6)
2.49
0.603
4
Inadequate supply of organic matter
33(18.3)
92(51.1)
55(30.6)
1.88
0.690
8
Inadequate farmland
80(44.4)
74(41.1)
26(14.4)
2.30
0.708
5
Unfavorable land tenure system
46(25.5)
91(50.6)
43(23.9)
2.02
0.705
6
Inadequate capital
44(24.4)
58(32.2)
78(43.3)
1.81
0.804
10
Inadequate labor
23(12.8)
98(54.4)
59(32.8)
1.80
0.646
11
Inadequate availability of SC materials
28(15.6)
91(50.6)
61(33.9)
1.82
0.681
9
Others
52(28.9)
80(44.4)
48(26.7)
2.02
0.747
6

Source: field survey, 2014. Key: VS = very serious, S = serious, NT = not serious and figures in parenthesis = percentages


5. SUMMARY AND CONCLUSION

From the result of the survey, males are relatively predominant in arable crop farming in the study area. There is a strong marital knot as divorced rate was low. Respondents contact with extension agents was very low while years of farming experience was quite long. Educational level was quite low which obviously affected some adoption of technologies in the study area. Some of the major soil conservation practices respondents had awareness of and used as climate change adaptation strategies were mulching, planting cover crops and mixed cropping, organic fertilizer etc. This suggests that farmers only used technologies they were aware of. Population pressure on land ranked first among other constraints encountered among arable crop farmers in the use of soil conservation practices. This suggests that a major constraint encountered in the use of soil conservation practices was population pressure on land.

5.1. Recommendations

Based on the findings of the study of the study, the following recommendations are made.

Trainings should be organized by both public and private agricultural extension agents for farmers to educate and inform them about environmentally friendly soil conservation practices that will help them adapt to a changing climate, thereby increasing their yields hence improving their income.

The three tiers of government should enact laws that will allow for the localization of land for various purposes in order to reduce population pressure on arable land since population pressure on land was the most serious constraint faced by arable crops farmers in the use of soil conservation in the study area.

Funding: This study received no specific financial support.

Competing Interests: The authors declared that they have no conflict of interests.

Contributors/Acknowledgement: Author 1 designed the study, managed the literature review, conducted the field work, performed statistical analysis and wrote the first draft of the manuscript. Author 2 edited the manuscript and checked technical quality of the work.

Views and opinions expressed in this study are the views and opinions of the authors, Asian Journal of Agriculture and Rural Development shall not be responsible or answerable for any loss, damage or liability etc. caused in relation to/arising out of the use of the content.

References

Abdul-hanan, A., Ayamga, M., & Donkoh, S. A. (2014). Smallholder adoption of soil and water conservation techniques in Ghana. African Journal of Agricultural Research, 9(5), 539-562. view at Google scholar view at publisher

Aboh, C. L. (2010). Adult education and cassava farmers’ productivity in rural communities in Akwa Ibom state, Nigeria. Unpulished Ph.d Thesis, University of Calabar, Department of Agricultural Economics and Extension, 134.

Adinya, I. B. (2009). Analysis of cost-returns profittabibility in groundnut marketing in bekwarra local government area, cross river state, Nigeria. Journal of Animal and Plant Sciences, 19(4), 212-216.

Agele, S. O., Iremiren, G. O., & Ojeniye, S. O. (2000). Effects of tillage and mulching on the growth,    development and yield of late-season tomato (Lycopersicon esculentum L.) in the Humid South of Nigeria. Journal of Agricultural Science, 13(4), 55-59.view at Google scholar / view at publisher

Ajayi, M. T., & Oloruntoba, A. (2004). Farmers’ adoption and perception of major agricultural technologies developed by international institute of tropical agriculture (IITA). Journal of Scientific and Industrial Studies, 2, 14-18. view at Google scholar

Ajayi, M. T., & Solomon, O. (2010). Influence of extension contact and farmers’ socio-economic characteristics on adoption of oil palm techniques in Aniocha north local government Delta State. Nigeria Journal of Agricultural Science and Technology (JAGST), 12(2), 35-46. view at Google scholar

Akinbile, L. A., & Odebode, S. O. (2007). Determinants of farmers use of sustainable soil conservation practices in Osun state, Nigeria. American Eurasian Journal of Sustainable Agriculture, 1(1), 4-5. view at Google scholar

Angba, A. O., & Ogar, D. (2012). Farmers’ use of environmentally sustainable practices in Cross River State. International Journal of Sustainable Development, 5(3), 40-48. view at Google scholar

Anim, F. D. K. (1999). A note on the adoption of soil conservation measures in the northern province of South Africa. Journal of Agricultural Economics, 50, 336-345. view at Google scholar view at publisher

Antle, J. M. (2010). Adaptation of agriculture and the food security to climate change: policy issues. Issue brief 10-03. http://www.rff.org/rff/documents/RFF-IB 10-03.PDF. Retrieved 17th April, 2014.

Araya, B., & Adjaye, J. A. (2001). Adoption of farm level soil conservation practices in Eritrea. Indian Journal Agricultural of Economics, 56(2), 239-252. view at Google scholar

Ashoori, D., Bagheri, A., Allahyari, M., Alyimawi, A. (2016). An examination of soil and water conservation practices in paddy fields of guilan province, Iran. Annals of the Brazilian Academy of Sciences, 88(2), 959-971. view at Google scholar view at publisher

Birte, J., Abaidoo, R., David, C., & Karl, S. (2008). Soil conservation in Nigeria: past and present on-station and off-farm initiatives. Soil and water conservation society, Ankeny, Iowa, U.S.A.   

Danbaba, A. M. (2007). Introduction to crop science. Adeoye publishers, Lagos, 78-88. view at Google scholar

Dimelu, M. U., Ogbona, S. C., & Enwelu, I. A. (2012). Soil conservation practices among arable crop farmers in Enugu-agricultural zone, Nigeria: implication for climate change. AESON Proceedings, 17th Annual Conference, 140-145. view at Google scholar view at publisher

Dumaski, J., Peiretti, J., Benitis, R., McCarry, D., & Pieri, C. (2006). The paradigm of conservation tillage. Proceedings of World Association of Soil and Water Conservation, pp. 58-64.

Effiong, E. O. (2005). Efficiency of production in selected enterprises in Akwa-Ibom State, Nigeria. Unpublished Ph.D Dissertation. Department of Agricultural Economics, Michael Okpara University of Agriculture, Umudike. view at Google scholar

Elemi, G. F. (2014). Effect of national special programme for food security on poultry Alleviation among cassava farmers in Cross River State, Nigeria. Unpublished M.Sc thesis, Department of Agriculture Economics/Extension, University of Calabar.

Eric, A. P. (1996). Communication in extension in issues in modern agriculture. Edited by E. U; Tibi and A. P; Eric, Pon Published United, Agbor Delta State, 54-63.

Eswaran, H., Lal, R., & Reich, P. F. (2001). Land degradation: an overview in responses to land degradation. ed. E.M. Bridges, I.D. Hannam, L.R. Oldeman, F.W.T. Pening de Vries, S.J. Scherr, and S. Sompatpanit. Proceedings of the 2nd. International conference on land degradation and desertification, KhonKaen, January 1999. New Delhi: Oxford Press.

Ezeaku, P. I. (2012). Soil conservation and management options for adaptation to climate change in the 21st century in: A. I., Enete, and M. I. Uguru (eds) Critical Issues in Agricultural Adaptation to Climate Change in Nigeria. Enugu, Chengo limited, 84-113.

FAO/UNESCO (1974). Soil map of the world. 1:5000000. Rome, Paris.

Fapojuwo, O. E., Olawoye, J. E., & Fabusoro, E. (2012). Soil conservation techniques for climate change adaptation among arable crop farmers in southwest Nigeria. Journal of Agricultural Science and Technology, 12(2), 35-46. view at Google scholar / view at publisher

+(2005). Global assessment of the status of human-induced soil degradation. FAO, Rome. view at Google scholar view at publisher

Hassan, R., & Nhemachena, C. (2008). Determinants of African farmers’ strategies for adapting to climate change: multinomial choice analysis. African Journal of Resource Economics, 2 (1), 83-104.view at Google scholar

Iheke, R., & Onyeorah, O. (2012). Awareness, preferences and adoption of soil conservation practices among farmers in Ohafia Agricultural Zone, Abia State, Nigeria. Journal of Sustainale Agriculture and the Environment, 13(1), 1-8. view at Google scholar

Jorge, A. D., Peter, M. G., Mark, A. N., Tom, G., Don, R., Raltan, L., Newell ,R. k., Charles, D., & Paul, S. (2012). Conservative practices to mitigate and adapt to climate change. Journal of Soil and Water Conservation, 66(4), 112-118.view at Google scholar

Mekuriaw, A., & Hurni, H. (2017). Factors influencing the adoption of physical and water conservation practices in the Ethiopian highlands. Journal of International Soil and Water Conservation Research, 6(1), 23-30.view at Google scholar / view at publisher

Mishra, P. K., & Rais, S. C. (2013). Use of indigenous soil and water conservation practices among farmers in Sikkim Himalayas, India. India Journal of traditional Knowledge, 13(3), 454-464. view at Google scholar

National Population Census (2006). Nigeria 2006 census figures. Http://Www.Nigeraiamasterweb.com/Nigeria 2006 census figss.html, Retrieved 6th  July, 2014.

Ofem, N. I., Elemi, G. F., & Agube, E. 1. (2013). The role of communication media in mitigating climate change effects on agricultural production in cross river state, Nigeria. Journal of Agricultural and Crop Research, 1(3), 46-54. view at Google scholar

Olaitan, S. O., & Omomia, O. A. (2006). Round-up agricultural science; a complete guide. Lagos: Longman Nigerian PLC.view at Google scholar

Onasanya, A. S. (2007). Crop farmers’ use of environmentally sustainable agricultural practices in Ogun State. Journal Environmental Extension, 6, 75-78.view at Google scholar / view at publisher

Pla, I. (2014). Advances in soil conservation research: challenges for the future. Journal of Soil Science, 4(3), 265-282. view at Google scholar

Sabo, E. (2006). Participatory assessment of the impact of women agricultural programmes of Borno state. Journal of Tropical Agriculture, 44(1), 52-56. view at Google scholar

Smith, B., & Smithers, J. (2006). Adoption of soil conversation practices an empirical analysis in Ontario, Canada. Land Degradation and Rehabilitation, 3, 1-4. view at Google scholarview at publisher

Surry, O. W. (1994). An additional tool for instructional developers. Education and Training Technology International, 19-25. view at Google scholar

United Nations Development Programme report (UNDP) (2001). Human Development Report: Making new technologies work for human development. Oxford University Press, New York. view at Google scholar

World Bank (1999). Understanding and responding to poverty. Retrieved from February, 2014. Available from: http://www.world bank.org/poverty/mission.  

Yohe, G., & Tol, R. S. J. (2002). Indicators for social and economic coping capacity- moving toward a working definition of adaptive capacity. Global Environmental Change, 12, 25-40. view at Google scholar