RESPONSE OF GRASSPEA TO THE APPLICATION OF PRILLED UREA AND UREA SUPER GRANULE

Abstract

The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period from November 2012 to March, 2013 to study the response of Grasspea to the application of prilled urea and urea super granules. The variety BARI Grasspea 3 was used as test crop. The experiment consists of the following treatments: T 1 = Prilled urea (PU) broadcasted; T = PU given between two rows; T = Urea Super Granules (USG) placed at 10 cm distance (avoid one row); T 4 3 = USG placed at 10 cm distance (avoid two rows); T = USG placed at 10 cm distance (avoid three rows); T 6 5 = USG placed at 20 cm distance (avoid one row); T 7 = USG placed at 20 cm distance (avoid two rows); T = USG placed at 20 cm distance (avoid three rows); T 9 8 2 = USG placed at 30 cm distance (avoid one row); T = USG placed at 30 cm distance (avoid two rows); T = USG placed at 30 cm distance (avoid three rows); T 12 11 = USG placed at 40 cm distance (avoid one row); T = USG placed at 40 cm distance (avoid two rows) and T = USG placed at 40 cm distance (avoid three rows). USG was placed at 10 cm depth at each case. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Results showed that tallest plant 34.64, 40.30, 47.35, 59.32 and 65.49 cm were obtained from T 7 14 i.e. USG placed at 20 cm distance (avoid two rows) and the shortest plant 19.34, 27.30, 30.55, 38.11 and 57.01 cm from T treatment i.e. USG placed at 40 cm distance (avoid three rows) at 30, 50, 70, 90 DAS and harvest, respectively. Treatment T 7 14 also took minimum days (45.33 days) to flowering and it was statistically identical with T 5 (47 days), T 6 (48 days) and T 1 13 (49.67 days), while T

treatment took maximum days (57.67 days). The highest pods plant (54.48), seeds pod -1 (4.87), weight of 1000 seeds (40.57 g), seed yield (1.94 t ha -1 ) and stover yield (2.92 t ha -1 ) was recorded from T 7 , while the lowest number of pods plant (45.09), lowest number of seeds pod -1 (3.43), lowest weight of 1000 seeds (34.79 g), lowest seed yield (1.19 t ha -1 ) and lowest stover yield (2.11 t ha -1 -1 -1 ) was observed from T . The study revealed that USG application showed better performance than prilled when placed in two rows but not with broadcasted prilled urea. 10 14 14