Effects Of Rice Production Systems On Perceived Soil Degradation In Ekiti State, Nigeria
The study focused on assessing the effect of NERICA rice project on small scale farmers food production accessibility who participated in the project in Ekiti state Nigeria.
The respondents are small scale farmers who cultivated less than 1 hectare of land and farming system was intercropping. Farming is the main activity in the study area and dominated by men. The large portions of the respondents land were cultivated with local variety, while the small part left for NERICA variety. All the respondents got information about the NERICA through the village extension agent. The major constrain faced by the farmers was the difficulty in selling the NERICA rice in the market was due consumer preference to local rice because of the better taste and aroma. The result of the findings shows that NERICA has better yield than other variety cultivated by farmers.
The research also found out that access to agricultural inputs was not constrained, provision were made to the farmers on credit and 50% subsidy on payment by the project and inability to sell the NERICA rice in the market made it difficult for them to pay back the inputs credit. The farmers continued cultivation of NERICA because they received inputs on credit and used the inputs for the cultivation of the local variety instead.
1.1 Background of the Study
Ever since mankind started agriculture, soil erosion has been the single largest threat to soil productivity and has remained so till date . This is so because removal of the topsoil by any means has, through research and historical evidence, been severally shown to have many deleterious effects on the productive capacity of the soil as well as on ecological wellbeing. Doran and Parkin  captioned the impact of soil erosion in their popular maxim that “the thin layer of soil covering the earth’s surface represents the difference between survival and extinction for most terrestrial life.” Although fertile topsoils could be lost when scraped by heavy machineries , the key avenues of topsoil loss include water erosion and wind erosion. Sometimes erosion can be such gradual for so long a time as to elude detection in one’s lifetime, thus making its adverse effects hard to detect.
Eswaran et al.  propose an annual loss of 75 billion tons of soil on a global basis which costs the world about US $400 billion per year. A review of the global agronomic impact of soil erosion identifies two severity groups of continents and reveals that Africa belongs to the more vulnerable group . Soil erosion by water seems to be the greatest factor limiting soil productivity and impeding agricultural enterprise in the entire humid tropical region . This is evident in many regions of Africa , mainly in the humid and 2 Applied and Environmental Soil Science subhumid zones of Sub-Saharan Africa (SSA) where population pressure and deforestation exacerbate the situation and the rains come as torrential downpours, with the annual soil loss put at over 50 tons ha−1 .
In Nigeria, the problem is not limited to water erosion as wind erosion prevails mainly in the semiarid and arid zones. For instance, soil loss to wind erosion of 58–80 tons ha−1 has recently been reported from the West African Sahel . Both forms of erosion can thus aptly define land degradation in the region. Soil erosion selectively detaches the colloidal fractions of soils and carts them away in runoff [10, 11]. These soil colloidal fractions (clay and humus) are needed for soil fertility, aggregation, structural stability, and favourable pore size distribution. The concentration of humus is usually higher in topsoils while that of clay is usually higher in subsoils due to illuviation, and this is mostly true in Ultisols that are widespread in Africa. This implies that humus, which has much greater capacity to hold water and nutrient ions compared to clay, its inorganic counterpart , is the more easily eroded.
1.2 Problem Statement
Land degradation indicates temporary or permanent long-term decline in ecosystem function and productive capacity. It may refer to the destruction or deterioration in health of terrestrial ecosystem, thus effecting the associated biodiversity, natural ecological processes and ecosystem resilience. It also considers the reduction and loss of biological / economic productivity and complexity of crop lands, pasture, woodland, forest, etc. Across the world over 20% of cultivated areas, 30% of forests and 10% of grasslands are suffering from degradation, affecting about 1.5 billion people this degradation may be the result of numerous factors or combination thereof including anthropogenic activities such as unsustainable land management practices and climatic variations (Bai et al., 2008).
Land degradation occurs in the form of depletion or total loss vegetative cover, and loss of its biophysical and economic productivity through exposure of the soil surface to wind erosion and water erosion, and through salinization and water logging, leading to deterioration of the physical, chemical and biological properties of soil. The continued loss of vegetation through salinization and human activities also depletes the world’s biodiversity, and it reduces the ability of natural environment for carbon sequestration, with the consequent long-term effects of global warming and climate; overgrazing in the case of rangelands in particularly serious in arid regions. Such conditions surrounded with very complex arising problems hitting severely the human well being allow us to state plainly that we are in need to efficient programmes to be implemented in order to face the enormous challenges we are no facing to achieve our goal towards a sustainable use of the natural resources Land and Water for rice production
1.3 Purpose of the Study
The purpose of this study is to examine the effects of rice production systems on perceived soil degradation in Ekiti state, Nigeria. Specifically the study:
- Assess the impact of rice production on soil nutrient
- Determine the effect of rice farming style on soil nutrient
- Assess the relationship between rice production and soil degradation
1.4 Significance of the Study
The need to understand the dynamics of soil degradation in terms of extent and severity cannot be overemphasized. Knowledge about the dynamics of soil degradation is important in the sustainable use and management of soil resource. Soil resource is essentially non-renewable. Therefore, avoidance of soil loss by improved management and conservation of the natural resources through sustainable use of land resources is important in combating low agricultural production, food insecurity and its associated negative effects on poverty levels and population drift (Tekwa, Belel and Alhassan, 2010).
The challenge of African agriculture is not only to enhance food production to meet the growing needs of its expanding population, but also to maintain the productive capacities of soils into the future. Although land use intensification can increase food production in the ‗high potential‘ areas (Barbier, 1997) evidence also shows that the extension of agricultural activities into marginal lands have tremendous negative effects on the quality of soils (Abubakar,1995; Sherr and Yadav, 1996).
Rehabilitation of degraded lands must be comprehensive and in line with the principle of sustainable development. A good way of tackling the menace of soil degradation in Africa in general and Nigeria in particular, is to provide adequate, accurate and relevant information on the forms, extent and severity of soil degradation. This can be achieved by incorporating farmers‘ knowledge and perceptions of soil degradation phenomena into science based methods (quantification and analysis) of soil degradation assessment. This will provide a realistic and holistic means of assessing soil degradation while taking full advantage of the farmers‘ experience and dynamic knowledge of their environment (Vigiak, Okoba, Sterk, and Stroosnijder, 2005; Stringer and Reed, 2006).
1.5 Study hypothesis
The study hypothesis is:
HO: there is no significant relationship between soil degradation and rice production
H1: there is a significant relationship between soil degradation and rice production
1.6 Scope and Limitations of the Study
The study scope is limited to investigating the effects of rice production systems on perceived soil degradation in Ekiti state, Nigeria. Limitation faced by the research was limited time and financial constraint
1.7 Organisation of Study
The study is grouped into five chapters. This chapter being the first gives an introduction to the study. Chapter two gives a review of the related literature. Chapter three presents the research methodology; chapter four presents the data analysis as well as interpretation and discussion of the results. Chapter five gives a summary of findings and recommendations.
6.0 Conclusion and Recommendations
This section presented the conclusion of the findings on the NERICA rice project on the small scales farmers in the study area and recommendations on how to improve on it in order for the project to have positive impact on the participants.
This study was conducted to evaluate NERICA rice project and its impact on the farmers in the research area of study. Based on the findings it is concluded the NERICA rice project has the potential to increase food accessibility of the farmers. The rice variety is of higher yield, can grow under harsh environmental conditions and also early maturing which can allow farmers to grow more than one crop in rainy reason. The project make provisions for agricultural inputs on credit and farmers paid back after the sales of the harvest with 50% subsidy
The research found out that majority of the farmers interviewed are cultivating less than 1 hectare with small part of their land allotted for NERICA rice. The farmers complain that market for NERICA rice is limited and it attracted low price compare with local variety. The consumer preference for local rice is because of the taste and aroma. The farmers were unable to pay back the inputs collected on credit because of the poor market of the NERICA rice. The major pest that causes serious economic loss in rice are birds and can destroy all the farms if not control on time
The study also examined the processing of the NERICA rice, information gathered was farmers still used old traditional method of parboiling and drying which reduce the quality and also they have to travel some kilometers for milling of the. Most of the farmers sell their rice in both paddy and milled form but the latter is preferred because of the higher price it attracted. The market is also far from the village and most of the roads were in bad conditions and they have to pay high transport fares in order to get their goods to the market.
The research also study the linked between NERICA office, agricultural extension agent and farmers. The farmers got information on the rice variety from formally from the extension agent, while the extension agent helps the project identified the rice farmers who are willingly ready to cultivate the rice and distribute inputs to them. Farmers paid for the inputs collected on credit to NERICA office through the extension agent.
Based on the study, it is concluded that income from NERICA rice project cannot guarantee small scale rice farmers food accessibility at this point in time. Though the rice variety has the potential because of the higher yield and early maturity but its poor market is attributed consumer preference of taste and aroma of local rice in the market. NERICA rice variety should be research and developed further so that it can attain is potential.
The following recommendations are made for the project to achieved is objective
Farmers: Should not be selling the rice individually, they can form association and pool their produce together this can command higher price and also reduce the cost of processing and transportation to the market. The farmers can look for guarantee contract production like hospitals, schools, and prisons since the market of NERICA rice is presently limited.
NERICA rice project office: Since farmers are willingly to cultivate the rice variety but being constrained by the market, the researcher should continue to improve on the present variety released to farmers that are acceptable in the market. The participatory variety selection should be conducted before any new variety would be released in large quantities in order to determine the variety farmers want to grow and also to consider consumer preference. The project should provide processing equipment for the farmers so as to ease the processing of the rice and also to improve the quality so that it can attract better price in the market.
The repair of the feeder roads to the villages is very imperative because the bad roads discourage most of the transporters to come to village and farmers find it very difficult to move their goods to the market. Farmers have to travel several kilometers before they can sell their rice at the market, this increase transition costs because of the higher transport fare paid and reduce their profit, this make the construction of the market very important. Awareness should be created through print and electronic media on the nutritional benefit in consuming the NERICA rice; this can create opportunity for the farmers to get more market for the rice and consumers’ willingness to buy it.
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