Evaluation of two white maize varieties under varying planting spacing in Teesta River Basin, Rangpur, Bangladesh

Md. Mahirul Islam Biswas; Md. Jafar Ullah; Sahida Easmin; Hasina Begum; Lutfunnaher Laila

doi:10.26832/24566632.2026.1103017

Authors

Md. Mahirul Islam Biswas
Department of Agriculture, Faculty of Agriculture, City University, Savar, Dhaka-1340, Bangladesh
Md. Jafar Ullah
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
Sahida Easmin
School of Agriculture, National Institute of Youth Development, Savar, Dhaka, Bangladesh
Hasina Begum
Department of Agriculture, Faculty of Agriculture, City University, Savar, Dhaka-1340, Bangladesh
Lutfunnaher Laila
Department of Agriculture, Faculty of Agriculture, City University, Savar, Dhaka-1340, Bangladesh

DOI:

https://doi.org/10.26832/24566632.2026.1103017

Keywords:

Biological yield, Grain yield, Harvest index, Planting space, White maize variety

Abstract

This study investigated the effects of plantation spacing on maize growth, yield and yield attributes of two white maize varieties viz., V1(PSC-121) and V2 (KS- 510) and three planting spacing viz., 50 cm × 25 cm, 60 cm × 25 cm and 70 cm × 25 cm. The taller plant (230 cm), longer cob (16.75 cm), maximum number of rows cob-1(12.90), number of grains row-1 (28.47), number of total grains cob-1(369.96), 100-grains weight (26.20 g), grain yield (6.66 t ha-1), stover weight (9.15 t ha-1), biological yield (15.81 t ha-1) and harvest index (42.20 %) were recorded in variety PSC-121 compared to variety KS-510. The longest cob (16.68 cm), highest number of grains cob-1(379.20) and highest 100-grain weight (27.05 g) ware observed in the planting spacing of 70 cm × 25 cm but showed the lowest grain yield (5.81 t ha-1), stover yield (7.88 t ha-1) and biological yield (13.69 t ha-1). In contrasts, planting spacing 50 cm × 25 cm resulted the highest grain yield (7.07 t ha-1), stover yield (10.21 t ha-1) and biological yield (17.28 t ha-1). In regard to interaction effect of variety and spacing, highest grain yield (7.37 t ha-1), maximum stover yield (10.40 t ha-1) and biological yield (17.77 t ha-1) were found at the planting spacing 50 cm × 25 cm with variety PSC-121. The lowest values of these parameters were recorded in the widest planting spacing (70 cm × 25 cm) with variety KS-510. Therefore, the optimal planting spacing 50 cm × 25 cm and variety PSC-121 produced highest grain yield 7.37 t ha-1 in sandy soil.

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