Growth models and path coefficient analysis of sesame (Sesamum indicum L.) in dry season

Patra, A.K.; Ghosh, D.C.; Mishra, A.; Tripathy, S.K.; Nanda, M.K.; Mahapatra, S.C.

Crop Research Hisar 10(3): 302-306


ISSN/ISBN: 0970-4884
Accession: 002855414

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In a field experiment during the dry seasons of 1989-90 sesame was grown at densities of 167 000, 222 000 or 333 000 plants/ha and was given no NPK fertilizer, 24:4.5:13 kg NPK/ha or 2, 3, 4 or 5 times these NPK rate. Yields were highest at the density of 333 000 plants/ha (1.25 t/ha) and with 96:18:52 kg NPK (1.42 t). Plant height at 35 days after sowing (DAS), DM accumulation at 50 DAS, LAI at 50 DAS and CGR 35-50 DAS were identified as key growth variables. The yield and yield components were greatly influenced by these growth variables. Seed yield was also significantly correlated with these growth variables and capsules per plant, number of seeds per capsule and test weight. Path coefficient analysis revealed that all these characters had direct and indirect effects on seed yield. DM accumulation at 50 DAS exerted maximum direct positive effect on seed yield followed by negative direct effect of CGR during 35-50 DAS.