Performance of locally discovered rice cultivar (Haridhan) in Bangladesh under urea sprays technology

Abstract

The research work was conducted at the Agronomy Field Laboratory, Department of Agronomy, Bangladesh Agricultural University, Mymensingh during the period from July to November 2015 to evaluate the yield performance of BRRI dhan56 and a locally discovered rice cultivar Haridhan under foliar and traditional application of urea. The experiment included six treatments of urea application technique as T₁=N₀ (control), T₂=N_65%, T₃=N_50%+US (15%), T₄=N_50%+US (20%), T₅=N_60%+US (15%), T₆=N_100% (traditional method) and two rice varieties viz. HYV rice cultivar BRRI dhan56 and locally discovered rice cultivar Haridhan. The experiment was laid out in a randomized complete block design (RCBD) with three replications. Foliar application of urea had significant effect on yield and yield components of BRRI dhan56 and Haridhan. It has been found that the treatment N_50%+US (20%) produced highest grain yield (6.14 t ha^-1) which might be due to the highest number of total tillers hill^-1 (15.03), effective tillers hill^-1 (12.11), panicle length (26.21 cm) and grains panicle^-1 (156.91) got from this treatment. From the result it can be concluded that both the varieties produced highest grain yield with 50% of the required urea applied to the soil and 20% of the required urea applied as foliar spray that can save an amount of 30% of recommended dose of urea in rice field of Bangladesh