Browsing by Author "Ajiboye, G.A."

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    Agronomic Evaluation of the Soils of a Toposequence for Rice (Oryza sativa L.) Production in Odeda LGA, Ogun State
    (Nigerian Journal of Soil and Tillage Research, 2018-05) Alabi, K. O.; Ajiboye, G.A.; Okeleye, K.A.; Aiboni, V.U.
    A suitability evaluation of some soil used for rice production in Odeda LGA of Ogun State was carried out. The result indicated that the identified soil types were currently marginally or unsuitable (N1) for rice production because of the index of current productivity IPc that ranged between 1.13 and 5.32. However the result further indicated that with improve agronomic and soil management technique, the suitability of these soil can be improved to S1 or S2 (highly suitable / moderately suitable) .This experiment was carried out to determine the level of agronomic and soil improvement that will result in acceptable yield of rice on these soils. A 2×2×2 factorial trial was used to evaluate the performance of rice under different management and fertilizer regimes within each mapping unit for two seasons. The factor considered were two rice varieties (Ofada and NERICAI), two types of fertilizers (N: P: K 20:10:10 at 400kg/ha and cured poultry manure at 10t/ha) and two different management methods (traditional and improved agronomic methods). The performance of the rice varieties did not differ across the land suitability units but was significantly affected by management practices (P=0.05). Fertilizer application increased the yield of rice by 30% while the difference in yield resulting from improved traditional farming was 10%. Application of both mineral and organic fertilizers significantly [P<0.001] improved the growth and yield of rice with organic fertilizer having higher effects. In conclusion, the productive capacity of soils for rice production can be improved through the use of both organic and inorganic fertilizers.
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    AGRONOMIC EVALUATION OF THE SOILS OF A TOPOSEQUENCE FOR RICE (Oryza sativa L.) PRODUCTION IN ODEDA LGA, OGUN STATE.
    (Nigerian Journal of Soil and Tillage Research-Published by International Soil Tillage Research Organization, Nigeria Branch (ISTRO-NG), 2018-05-21) Alabi, K.O; Ajiboye, G.A.; Okeleye, K.A.; Aiboni, V.U.
    A suitability evaluation of some soil used for rice production in Odeda LGA of Ogun State was carried out. The result indicated that the identified soil types were currently marginally or unsuitable (N1) for rice production because the index of current productivity IPc that ranged between 1.13 and 5.32. However, the result further indicated that, with improved agronomic and soil management technique, the suitability of these soil can be improved to S1 or S2 (highly suitable/moderately suitable). This experiment was carried out to determine the level of agronomic and soil improvement that will result in acceptable yield of rice on these soils. A 2*2*2 factorial trial was used to evaluate the performance of rice under different management and fertilizer regimes within each mapping unit for two seasons. The factors considered were two rice varieties (Ofada and NERICAI); two types of fertilizers (NPK 20:10:10 at 400kg/ha and cured poultry manure at 10t/ha) and two different management methods (traditional and improved agronomic methods). The performance of the rice varieties did not differ across the land suitability units but was significantly affected by management practices (P= 0.05). Fertilizer application of both mineral and organic fertilizers (P<0.001) significantly improved the growth and yield of rice with organic fertilizer having higher effects. In conclusion, the productive capacity of soil for rice production can be improved through the use of both organic and inorganic fertilizers
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    CLASSIFICATION AND SUITABILITY EVALUATION OF SOILS OF A TOPOSEQUENCE AT ODEDA, OGUN STATE FOR THE PRODUCTION OF RICE (Oryza sativa)
    (Nigerian Journal of Soil Science, 2011-08-29) Ajiboye, G.A.; Alabi, K.O; Aiboni, V.U; Okeleye, K.A.; Adesodun, J.A.
    A detailed survey of the soils of a Toposequence at Odeda, Ogun state was conducted to characterize, classify and assess the suitability of the soils for sustainable production of rice. The rigid grid method of survey was adopted for soil mapping while the linear parametric and square root models were used for assessing the suitability of the land for rice production. The result of the study showed that the soils of the three pedons were loamy sand to sandy clay loam texture, fine to coarse sub-angular blocky structure and loose to hard consistency. All the pedons had redoximorphic properties with varying quantities of iron-manganese concretion in the sub soils. Soil reaction ranged from strongly acid to neutral (pH of 5.3 – 6.8) with low organic carbon (<1.6%) and available nitrogen. Apart from Potassium contents which, were considered adequate for rice production, other exchangeable cations, available phosphorus and micro-nutrients were very low. Pedon 1 (upper slope) was classified as Typic Hapludalf (Lixisol; Cutanic, Hypereutric), Pedon 2 (Middle slope) as Aeric Endoaquept (Cambisol; Endogleyic, Hypereutric). All the pedons had index of current productivity (IPc) ranging between 1.13 and 5.32 and were currently not suitable (N2) for both upland and lowland rice production as assessed by the linear and square root models. Potentially, using the linear model, the index of potential productivity (IPp) ranged between 37.8 and 76.50 for upland rice production and between 44.10 and 54.00 for lowland production. Thus, Pedon 1 is highly suitable for upland rice but moderately suitable for lowland rice production. Pedon 2 is moderately suitable (S2) for the production of upland rice but marginally suitable(S3) for lowland rice production. Pedon 3 is potentially marginally suitable (S3) for both upland and lowland rice by the linear model. The square root model gave higher values of IPp ranging between 47.62 and 80.60 with a trend similar to the result of the linear model for upland rice production. However, the suare root model with an IPp ranging between 50.91 and 67.44 indicated that all the pedons are moderately suitable (S2) for lowland rice production. The limiting factors were mainly low levels of available macro and micro nutrients, low organic matter content and low cation exchange capacity.