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Articles by O.S. Shittu
Total Records ( 3 ) for O.S. Shittu
  O.S. Shittu and J.A. Ogunwale
  The soils derived from charnockite in Ekiti State Nigeria were found to be low in zinc and phosphorus. This study was therefore, conducted during the rainy seasons of 2006 and 2007 to evaluate growth and yield response of soybean TGX-1440LE from the direct effect and interaction of phosphorus and zinc. Treatments consisted of factorial combination of 2 levels of P (0 and 30 kg P ha-1), three levels of Zn (0, 2 and 4 kg ZnSO4 ha-1) in a randomized complete block design in a soil developed in charnockite in Ekiti State the growth data were collected at 2 weekly intervals while yield components were taken at harvest. Stem girth, number of nodules and nodule weight significantly (p<0.05) increased with 2 kg Zn ha-1 application, which gave 111.2% yield advantage over the control treatment (0 kg Zn ha-1). Fertilizer rate above 2 kg Zn ha-1 significantly (p<0.05) decreased P uptake. The 30 kg P ha-1 rate produced better growth which was not significantly different from 0 kg P ha-1 while increase in P and Zn uptake was significant. The PxZn interaction was significant for grain yield and Zn uptake. The treatment combination that gave the highest yield was 30 kg P ha-1 and 2 kg Zn ha-1.
  S.O. Omotoso and O.S. Shittu
  The effect of Broiler litter and NPK 15-15-15 fertilizers on soil properties, growth and yield of okra (Abelmoschus esculentus (L.) Moench) were investigated at the Teaching and Research Farm, University of Ado-Ekiti and a farmer`s field at Omuo Ekiti (Southern guinea savannah soil), Nigeria. The treatments consisted of 0, 2, 4 MT ha-1 Broiler litter (Poultry manure) and 150 kg ha-1 NPK 15-15-15 fertilizer. The results indicated a significant increase in growth parameters in those plants planted in NPK 15-15-15 fertilized plot than poultry manure plot. However, growth parameters (plant height, stem girth and number of leaves) were increased significantly (p<0.05) as manure rates increased. Poultry manure at 4 MT ha-1 gave significant increase in fruit yield of okra in both location leading to 20.1 and 14.6% increase, respectively for Ado-Ekiti and Omuo Ekiti over the unfertilized plot (control). Leaf nutrient content was also increase with increasing rates of poultry manure.
  O.S. Shittu , O.C. Adebooye , A.S. Fasina and F.O. Omolayo
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