International Journal of Plant & Soil Science

An experiment was conducted at the Farmer’s Field, Boyra village, Mymensingh, Bangladesh during the period from February to May 2016 to study the yield performance of boro rice for seed production as influenced by nitrogen and phosphorus fertilization with different levels of roguing. The experiment comprised three levels of roguing viz. no roguing (R₀), roguing one time (R₁) and roguing two times (R₂) and five doses of N and P fertilizers viz. Farmer practice (F₁: 250 kg urea and 260 kg TSP), Optimum/recommended (F₂: 187 kg urea and 200 kg TSP), High N (F₃: 200 kg urea and 200 kg TSP), High P (F₄: 187 kg urea and 240 kg TSP) and High N + High P (F₅: 200 kg urea and 240 kg TSP). The experiment was laid out in a randomized complete block design with three replications. Results revealed that the Optimum doses of fertilizer applications significantly produced the highest grain yield among the treatments. All the yield contributing characters showed the best performance in this treatment. Though roguing did not produce significant yield variation but the interaction effects did. Here, The Optimum doses of fertilizer without roguing (F₂R₀) produced highest grain yield but it was at per with F₃R_1, F₂R_2, F₂R_1, F₄R₁ and F₅R₂ treatments. Among the five statistically alike treatments F₂R₂ i.e. optimum fertilizer dose with two rougings produced the highest number of filled grains per panicle and highest seed germination and appreciably higher percentage of pure seed. Based on this experimental result, it appears that optimum fertilizer dose with two times rouging treatment performed the best for seed production in BRRI dhan29.