STUDY ON THE COMPARABLE EFFECT OF UREA SUPER GRANULE (USG) AND NPK BRIQUETTES ON THE GROWTH AND YIELD OF BORO RICE (BRRI dhan28)

Abstract

The experiment was conducted during the period from November 2015 to April, 2016 to study the performance of urea super granule (USG) and NPK briquettes on growth and yield of boro rice (BRRI dhan28). The experiment consists of the following treatments: T 1 ii

: No fertilizer; T 2 : RFD (Recommended Fertilizer Dose) for Boro rice; T 3 : 1 granule of NPK of 2.4g weight in between 4 hills + SZn; T 4 : 2 granule of NPK of 2.4g weight in between 4 hills + SZn; T 5 : 3 granule of NPK of 2.4g weight in between 4 hills + SZn; T 6 : 1 Urea Super Granule of 2.7g weight in between 4 hills + PKSZn; T 7 : 2 Urea Super Granule of 2.7g weight in between 4 hills + PKSZn; T 8 : RFD + 1 Urea super granule of 2.7g weight in between 4 hills. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Application of urea super granule (USG) and NPK briquettes expressed significant influence on growth attributes as well as grain and straw yields of BRRI dha28. The highest grain yield (7.03 t/ha) was obtained in the T 6 (1 Urea Super Granule of 2.7g weight in between 4 hills + PKSZn) treatment which was significantly greater than that obtained from the rest of the treatments used in the experiment. The highest straw yield (7.77 t/ha) was obtained in the T 6 (1 Urea Super Granule of 2.7g weight in between 4 hills + PKSZn) treatment which was significantly greater than that obtained from the rest of the treatments. The lowest grain yield (4.09 t/ha) was recorded in T 1 and lowest straw yield (4.78 t/ha) was recorded in T 4 .

Although maximum number of total grain/panicle (180.87) was obtained in the T 8 but maximum number of filled grain/panicle (157.7) was obtained in the T 6 . So, the treatment T 6 (1 Urea Super Granule of 2.7g weight in between 4 hills + PKSZn) may be recommended for profitable cultivation of boro rice, BRRI dhan28.