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Articles by L.S. Ayeni
Total Records ( 3 ) for L.S. Ayeni
  L.S. Ayeni
  This study reviews the need for Integrated Plant Nutrition Management (IPNM) around the efficient use of combining locally available and environmentally feasible agro-wastes with low level of mineral fertilizers for soil fertility maintenance and crop production in Nigeria. Integrated application of combined agro-wastes and mineral fertilizers complement each other in term of nutrients release. Research findings indicate that little has been done to transfer the technology to the peasant farmers who produce the bulk of the food in the country. Efforts should be made towards IPMN in order to increase food production that can feed the teaming population. Adequate soil map should be generated to reduce fertilizer abuse.
  L.S. Ayeni and E.O. Adeleye
  The objective of this study was to compare the effects of NPK 20:10:10 fertilizer, cocoa pod ash and poultry manure on soil nutrient status as well as their interactions. The study was conducted in South Western Nigeria. Two levels of cocoa pod ash at 5 and 10 t ha-1; poultry manure at 5 and 10 t ha-l and NPK 20:10:10 fertilizer at 100 and 200 kg ha-l were separately mixed with soil constituents. There was a control without any treatment. The treatments were replicated nine times on completely randomized design and were sampled at 30, 60 and 90 days for analysis. Three samples per treatment were analysed and discarded each month. Cocoa pod ash and poultry manure rates significantly increased (p<0.05) soil pH, organic matter, N, Ca, Mg, CEC and percent base saturation. Cocoa pod ash at 10 t ha-1 recorded the highest pH and Ca at 30, 60 and 90 days. NPK fertilizer at 200 kg ha-1 had the highest N, P and exchangeable acidity at 30, 60 and 90 days. Cocoa pod ash applied at 10 t ha-1 had highest CEC at 60 days of incubation. Cocoa pod ash and poultry manure decreased exchangeable acidity, while NPK rates increased it. Cocoa pod ash at 10 t ha-1 had the widest Ca: Mg ratio among the treatments and thus may be prone to nutrient antagonism. Cocoa pod ash and poultry manure rates reduced K: Ca ratio compared with control. Among the treatments, OC: N, Ca: Mg and K: Ca ratios fall within the acceptable range for arable crop production in Southwestern Nigeria.
  L.S. Ayeni and E.O. Adeleye
  Laboratory incubation study gives insight to the condition of the field when treatment is applied. In order to determine the effect of cattle dung combined with urea fertilizer on soil pH and cations on soils from selected agro-ecological zones of Nigeria, an incubation study was carried out on four treatments in each of the agro-ecological zone. Soil samples were collected from Lagos (Mangrove forest), lpe Akoko (forest derived savanna), Lokoja (Southern Guinea savanna) and Katsina (Sudan savanna). Cattle dung was applied at the rate of 1.25 and 500 g soil to represent 5 t ha-1 and 0.05 and 500 g soil to represent 200 kg ha-1 urea fertilizer. Urea fertilizer was either applied singly or combined to give four (4) treatments in each of the agro ecological zone. The treatments were replicated three times and were arranged on Completely Randomized Design. Compared with control, cattle dung applied alone and cattle dung combined with urea fertilizer significantly increased (p<0.05) soil pH but at different level of increment in Lagos, Lokoja and Katsina while there were decreases in soil Al3++H+ from all the ecological zones. The treatments had no significant effect on Al3++H+ in the soil sample collected from Ipe Akoko. Soil types react to application of cattle dung and its combination with urea fertilizer in different ways in Nigeria.
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