EFFECT OF DIFFERENT LEVELS OF NPK FERTILIZERS ON THE GROWTH AND YIELD OF OKRA

Abstract

An experiment was conducted at the research farm and laboratory of Crop Physiology and Ecology Department, Hajee Mohammad Danesh Science and Technology University, Dinajpur, during April 2012 to August 2012 to evaluate the effect of different levels of NPK fertilizers on the growth and yield of okra. The experiment was laid out in two factors randomized complete block design with three replications. Three okra varieties, such as BARI Dherosh 1, Choice and Arka Anamica and four fertilizer treatments, such as Fy) (NPK 0 0 0 kgha’), F, (NPK 60 20 40 kgha’'), F, (NPK 90 30 60 kgha™') and F;(NPK 120 40 80 kgha’') were tested. Arka Anamica and fertilizer treatment, F;(NPK 120 40 80 kgha’') had higher leaf number, stem height (cm), branch number, leaf area plant '(cm’), fruit number plant”, fruit length plant”'(cm), fruit weight plant” (g), fruit weight (tha™'), seed number fruit’, seed weight fruit’ (g), seed yield plant''(g), 1000-seed weight(g), seed yield (g plot’) and seed yield (tha’'). F, (NPK 90 30 60 kgha’') had statistically similar result with F;(NPK 120 40 80 kgha"'). On the other hand, variety BARI Dherosh 1 had minimum values in these characteristics. Variety Arka Anamica took more time for first flowering (30.92 days). The interaction of variety and fertilizer doses significantly affects days to first flowering (33.00). The interaction of variety and fertilizer doses significantly affects the seed yield (tha™') of okra. Lowest (1.633 tha’) seed yield was observed at V3Fy combination. V; F; combination had highest (3.903 tha’) seed yield (tha’') which was statistically similar to V,; F, combination (3.883 tha’).