Back to Contents

FREE FULL TEXT PDF

EFFECT OF SOWING DATES AND ROW SPACINGS ON SOYBEAN YIELD AND YIELD COMPONENTS IN AUTUMN UNDER RAINFED CONDITIONS

SHER MAHMOOD SHAH, M. ASLAM, S. SHAFIQ AND M. ASLAM HAYAT*

Abstract: A field experiment was conducted to evaluate the effect of sowing dates and row spacings on yield and yield components of different soybean genotypes under rainfed conditions. The newly developed test genotypes NARC-V and NARC-III produced significantly higher yield of 4264 and 4262 kg per hectare, respectively, at 45 cm apart rows. The check genotype William-82 gave smallest grain yield. Highest number of pods per plant were observed in NARC-IV and NARC-V, when planted on early date and gradually decreased as the sowing was delayed. The genotype NARC-IV and NARC-V produced highest number of pods when planted at 45 cm apart rows. Number of pods decreased as the spacing was decreased. William82, being a taller genotype, produced taller plants when planted early. Delayed plantings and closer spacings produced smaller plants.

Oil Seed Research Institute, NARC, Islamabad, Pakistan.
University of Arid Agriculture, Rawalpindi, Pakistan.