Effect of Different Sowing Windows on Dry Matter Accumulation of Pigeonpea Genotypes

Abstract

A field experiment was conducted to study the “Effect of different sowing windows on dry matter accumulation of pigeonpea genotypes” at Regional Agricultural Research Station, Vijayapura, during Kharif 2021. The experiment was laid out in a split-plot design assigning four sowing windows to main plots viz., first fortnight of June (23-24th SMW), second  fortnight of June (25-26th SMW), first fortnight of July (27-28th SMW) and second fortnight of July (29-30th SMW), whereas genotypes to subplot viz.,TS-3R, GRG-152 and GRG-811 and replicated thrice. The results revealed that sowing in first fortnight of June accumulated more dry matter in leaves (18.47 g plant-1), stem (131.22 g plant-1) and reproductive parts (68.16 g plant-1). Among the genotype GRG-152 accumulated higher dry matter in leaves (17.34 g plant-1) and stem (123.01 g plant-1). However, dry matter accumulation in reproductive parts is higher in TS-3R (63.68 g plant-1). Similarly TDMP was higher in first fortnight of June sowing (217.85 g plant-1) than delayed sowing in second fortnight of July. TS-3R accumulated higher TDMP in the beginning growth stage when compared to GRG-152 and GRG-811. However, TDMP was higher in GRG-152 at later stage. This study revealed that pigeonpea sown in first fortnight of June recorded higher dry matter production and it’s partitioning in leaf, stem and reproductive parts and among the genotype TS-3R recorded significantly higher dry matter in pods due to more photosynthetic activity of the genotype which results in higher yield of the crop.