Soil properties and chilli pepper (Capsicum annum L.) performance as influenced by organo-mineral fertilizer rates in Obio Akpa, Nigeria
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Abstract
Field experiment was conducted within the Teaching and Research Farm of the Faculty of Agriculture, Akwa Ibom State University, Obio Akpa Campus in Oruk Anam Local Government Area in two locations. The objective was to determine the effects of rates of organo-mineral fertilizer (OMF) on soil properties and on the performance of chilli pepper (Capsicum annum L.). Four rates (0, 2, 4 and 6 t/ha) of OMF was laid out on a randomized complete block design with four replicates. The soil used for the experiment was loamy sand with a pH of 5.3. Results obtained showed that the application of OMF at all rates significantly improved the soil properties (total nitrogen, organic carbon, available phosphorus, exchangeable Ca, Mg, ECEC, base saturation) relative to control. Chilli pepper responded positively to the application of OMF at all rates but superior increases in fruit number, fruit length, fruit width, fruit weight and fruit yield were obtained from plants treated with 4 t/ha of OMF. The highest fruit yield (1.92 t/ha) was obtained from the 4t/ha of OMF closely followed by the 6 t/ha (1.82 t/ha), then the 2 t/ha treated soil (1.35 t/ha) while the least value was obtained from the control (0.31 t/ha).Relative yield increase of treated soils over the control was 335.5%, 519.4% and 487.1% for 2, 4 and 6 t/ha rates of OMF, respectively. Based on the findings from this study, addition of OMF especially at 4t/ha is appropriate for sustainable production of chilli pepper in Obio Akpa.
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