Effect of sowing time on biomass production and partitioning into grain yield of pigeonpea genotypes (Cajanus cajan L.Millsp.)

Mahendraraj Sabampillai 1*, Marisa Collins 2, Yash Chauhan 3, Rao C.N. Rachaputi 1

1 Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Australia

2 La Trobe University, Melbourne

3 Queensland Department of Agriculture and Fisheries, Kingaroy, Queensland, Australia


The effect of sowing date on growth and partitioning of dry matter into yield of pigeonpea (Cajanus cajan L.Millsp) genotypes were investigated using split design. Six genotypes (Quest, UQPL941, UQPL1001, ICPL86022, CIPL86039 and ICPL14425) were sown in December 2017 and January 2018. The dry matter production and grain yield of the genotypes under different sowing conditions ranged from 12 – 17 t ha-1 and 3.7 – 4.6 t ha-1. The highest harvest index was recorded in January. The genotypes in both sowings performed differently with respect to yield and harvest index. The results showed significant effect of sowing date on dry matter production and partitioning efficiencies of pigeonpea genotypes and an appropriate adjustment in planting time would optimize the genotype performance.



The Australian Society of Agronomy is the professional body for agronomists in Australia. It has approximately 500 active members drawn from government, universities, research organisations and the private sector.

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