GROWTH, YIELD AND YIELD ATTRIBUTES OF WHITE MAIZE (SAUWMT 12-3-3) UNDER DIFFERENT PLANTING GEOMETRY

Abstract

An experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University Dhaka, during October 2018 to February 2019 to evaluate the growth, yield and yield attributes of white maize (Genotype SAUWMT 12-3-3) under different planting geometry. The experiment was consisted of two different factors. Factor A: Row spacings (5) viz. S 1 : 40 cm, S 2 : 45 cm, S 3 : 50 cm, S : 60 cm, and Factor B: Plant spacings (3) viz. T 1 : 15 cm, T 2 : 20 cm and T : 25 cm. The experiment was set up in randomized complete block design (factorial) with three replications. Results revealed that, growth, yield and yield attributes of white maize were significantly influenced due to different planting geometry. In case of row spacings result revealed that, the maximum cob length plant -1 (18.28 cm), cob circumference plant -1 (19.70 cm), number of grain rows cob -1 (16.77), number of grains row -1 in cob (29.37), number of grains cob -1 (492.70), 1000 grains weight (301.33 g), chaff weight cob -1 (8.92 g), shell weight cob -1 (17.53 g), grains weight cob -1 (122.49 g), cob weight plant -1 (148.93 g), shelling percentage (82.05 %) and grain yield (10.35 t ha -1 ), were recorded in S treatment. In case of plant spacings result revealed that, the maximum cob length plant 5 -1 (16.97 cm), cob circumference plant -1 (18.42 cm), number of grain rows cob -1 4 : 55 cm, S (15.33), number of grains row in cob (26.39), grains cob -1 3 (408.56), 1000 grains weight (284.26 g), chaff weight cob

(8.54 g), shell weight cob -1 (16.39 g), grain weight cob -1 -1 (110.13 g), cob weight plant

(135.06 g), shelling percentage (81.41 %), were recorded in T treatment, and maximum grain yield (10.07 t ha -1 ) was recorded in T 2 3 treatment. In case of combined effect, S 5 T (60 cm × 20 cm) treatment combination performed best in producing the maximum grain yield (11.07 t ha 2 -1 ) and suitable for grain production of white maize comparable to other treatment combination. The corresponding lowest grain yield and yield attributes were recorded in S 1 T (40 cm × 15 cm) treatment combination.