Effect of Fertilizers with Agronomic Management on the Growth and Yield of Boro Rice (cv. BRRI Dhan29) in Haor Area of Bangladesh

Abstract

The experiment was conducted at the farmers’ fields of Bahadurpur village in Dekar haor area under the Lakshmanshri union of Sadar upazila of Sunamganj district during November 2015 to May 2016 to observe the effect of fertilizer and agronomic management on growth, yield and yielding parameters of BRRI dhan29 in haor area. The experimental site was located under the Agroecological Region Sylhet Basin (AEZ-21) where the soil was moderately acidic. The experiment was designed with seven treatments including T1= Farmers’ practiced based fertilizer (180-42-42 kg ha-1 of urea-TSP-MoP), T2 = Bangladesh Agricultural Research Council (BARC) Recommended Dose based fertilizer (300-112-127-75-11 kg ha-1 of urea-TSP-MoP-Gypsum-ZnSO4), T3 = T2 + Wet Irrigation, T4 = T2 + Wet and Dry Irrigation, T5 = T2 + Proper Seedling Age, T6 = T2 + PSA (Proper Seedling Age), T7 = IPNS (Integrated Plant Nutrient System) + Proper Seedling Age + Integrated Pest Management. The test crop was BRRI dhan29. The experiment was laid out in a randomized complete block design (RCBD) with five farmers' replications. Data were taken on growth, yield and yield parameters of BRRI dhan29 and analysed with the help of MSTAT-C program. The plant height varied significantly and found the longest plants due to T7 except for 25 days after transplanting. The highest number of tillers hill-1 were recorded in (T7) IPNS (Integrated Plant Nutrient System) + Proper Seedling Age + Integrated Pest Management. The highest grain yield (7.95 t ha-1) and straw yield (9.85 t ha-1) were recorded from IPNS (Integrated Plant Nutrient System) + Proper Seedling Age + Integrated Pest Management over farmers' practice-based fertilizers (T1). Post-harvest soils showed a higher nutrient content in comparison to initial soil due to the application of balanced fertilizers.