EFFECTS OF POULTRY MANURE AND NPK ON THE GROWTH AND YIELD OF OKRA (Abelmoschus esculentus L. Moench) IN DAWAKIN-KUDU AND BAGAUDA SAVANNAH ZONE NIGERIA
Field trials were conducted in 2018 wet season at two locations, Dawakin – Kudu location (Latitude 110. 762238N and Longitude0090.04805E) and Bagauda location (latitude 110 – 22N and longitude 1800 22E and 500 m above the sea level) both sites are located in savannah zone of Nigeria. The aim of the research was to determine the effect of poultry manure and N.P.K fertilizer on the growth and yield of Okra (Abelmoschus esculentus L. Moench). The treatment consist three levels of poultry manure at the rate of 0, 2, and 4 ton ha-1 and N.P.K (15:15:15) fertilizer at 90kg/ha the treatment were laid out in split plot design and replicated three times. The data collected was subjected to Analysis of variance (ANOVA) procedure for split plots Design using Gen-Stat software. F-test was used to test for the level of significance, mean separation was carried out using Student New Kurt (SNK) at 5% level of significance. Result of the study indicated that both mineral (NPK) and the organic manure (Poultry dropping) improved the growth and yield of Okra (Albelmoschus esculentus), but varying in degree, Organic fertilizers were better than the NPK mineral fertilizer in the growth and yield of Okra plant in both locations with 4 ton ha-1 of poultry manure which produced plant height with mean value of (23.87 cm), followed by 2 ton ha-1with mean value of (21.12 cm) and N.P.K fertilizer at 90 kg/ha produced high number of plant with mean value of (19.44 cm), crop canopy, number of branches treated with poultry manure significantly produced higher number of branches per plant with mean value of (4.06) at Dawakin kudu location, application of NPK alone produced number of branches with mean value of (4.19), number of leaves and fresh shoot weight., highest fresh fruit weight, application of 4 tons of poultry manure produced high number of fruits per plant with mean value of (24.29) which is statistically similar with 2 ton ha-1 of poultry manure produced mean value of (16.27) of number of fruits per plant in both locations. However, the finding of the study indicated that, application of both organic and inorganic fertilizers improved the growth and yield of Okra (Abelmoschus esculentus L. Moench) but varying in degree. Organic fertilizers are more effective than the inorganic fertilizer e.g. N.P.K the used of organic manure in the production of vegetables like Okra should be encouraged. The research recommended that, application of 4ton ha-1 of poultry manure in increase fruit yield of Okra in both locations.