ISSN 2348-1218 (print) International Journal of Interdisciplinary Research and Innovations ISSN 2348-1226 (online) Vol. 8, Issue 2, pp: (17-22), Month: April - June 2020, Available at: www.researchpublish.com
THE EFFECTS OF N. P. K. LEVELS ON THE GROWTH, YIELD COMPONENTS AND GRAIN YIELD OF 2 – CULTIVARS OF SOYBEANS, ‘’TAMAKPO’’ AND JOHN GREEN(Glycine max ( L. ) Merrill), IN BALI LOCAL GOVERNMENT AREA OF TARABA – STATE, NIGERIA UGWUEGBULAM, O.C., BAKO, P. M AND PIUS, H DEPARTMENT OF AGRICULTURAL TECHNOLOGY FEDERAL POLYTECHNIC, BALI TARABA-STATE, NIGERIA
Abstract: Field trial was conducted at the Teaching and Research Farm of the Department of Agricultural Technology, Federal Polytechnic, Bali, Taraba – State in 2019 cropping season, to study the effects of N. P. K. levels on the Growth, Yield components and Grain yield of 2- cultivars of Soybeans ‘’Tamakpo’’ and John Grain (Glycine max( L.) Merrill), in Bali Taraba – State, in the northern – guinea savanna zone of Nigeria. The experimental design was a split – plot design with the Soybean cultivars ‘’TAMAKPO’’ and JOHN GREEN as the main plots and five treatments T1 (Control ), T2, T3, T4, and T5 as sub – plots. These treatments were replicated four times giving a total of forty (40) sub - plots . Parameters measured include; Plant height (cm) at 4, 8, and 12 weeks after planting (WAP), number of leaves per plant at 4, 8, and 12 weeks after planting(WAP), number of branches at 4, 8, and 12 weeks after planting(WAP),and number of effective and non – effective nodules per plant . For yield, the following Parameters were taken; Number of pods per plant, pod weight per plot, 100 seed weight and grain yield in kg/ha. The result shows that there was no significant difference at (P<0.05) in the effects of treatment and cultivar on number of leaves of soybean cultivars at 4, 8, and 12, after planting (WAP). The results also shows that there was no significant difference at (P<0.05) in the effects of treatments and cultivars on number of branches of soybean cultivars at 4, 8, and 12 weeks after planting (WAP). There was no significant difference at (P<0.05) in the effects of treatments and cultivars on the height of soybean cultivars at 4, 8, and 12 weeks after planting (WAP). On yield parameters, there was no significant difference at (P<0.05) in the effects of treatment and cultivar on the yield of soybean cultivars. In the yield parameter of this study, that is number of effective and non – effective nodules, pod weight, number of pods, 100 seed weight and pod yield/ha. The results of this study indicated that there were no significant differences in the performance of cultivars on both growth and yield parameters. This might be due to soil conditions, agronomic practices and environmental conditions in Bali Local Government Area of Taraba – State. Despite the fact, that there was no significant differences between N, P, K, levels(treatment) and cultivars, more research can be carried out using other treatments on the same cultivars, to experiment on commercial production which can be disseminated to farmers, for large scale production of soybean in the study area. Keywords: Soybean Cultivars, Yield Performance, Effective and Non – Effective Nodules, Treatments, Leguminosae.
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