Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 17 ISSUE 3
Written by Isaiah Olusesan ADEPOJU, Timothy Ipoola OLABIYI, Wasiu Babatunde AKANBI, Adetunji Solomon ADEYEYE

Field and screen house trials were conducted during planting season of 2014 and 2015 to investigate the influence of organic and organo mineral fertilizers on okra grown in root knot infested soil. Okra variety Clemson spineless was grown with five levels of organo mineral fertilizer :(1.5,2.0,2.5,3.0,and 3.5 t/ha),five levels of organic fertilizer (1.5,2.0,2.5,3.0,and 3.5 t/ha) and the control. The experiments were laid in a randomized complete block design with four replications. Data analysis using ANOVA at 5% level of probability showed the applications of organic and organo mineral fertilizer to have enhanced plant growth and fruit production significantly: number of leaves, plant height, fruit yield, root gall index and soil nematode population were significantly affected by different level of organic and organo mineral fertilizer rates. The results of the okra fruit yield and yield components showed that application of 2.5 and 2.0 t/ha of organo mineral fertilizer produced the highest number of fruits of (2,274.7g) and (2,349.6) respectively. Applications of treatment reduce nematode population and associated damage. The study therefore recommends organic and organo mineral fertilizer rate of 2.0 t/ha for the production of okra in root knot nematode infested soils.

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