Studies on the productivity of forage sorghum under the cultural environment 1. effects of seeding date on growth dry matter accumulation and chemical composition of sorghum sorghum bicolor l. moench

Park, H.K.; Kim, Y.D.; Suh, S.K.; Chae, J.S.; Kim, J.T.; Shin, M.G.

Research Reports of the Rural Development Administration (Suweon) 30(1 LIVEST): 54-62

1988


Accession: 007836120

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Abstract
In order to find out the effects of seeding date on growth, dry matter production and nutritive contents of Lucky Sorghum and NK 367, this study was carried out on the experimental field of Honam Crop Experimental Station 1986. Seeding dates were 5 with 15 days interval from April 25 to June 25. This results are summarized as follows. It took about 11 days from seeding to emergence at April 25 and 4 to 5 days as June 25. Plant height at the first cutting was the longest at May 10, and total plant height was markedly decreased with later seeding time. Leaf area index (LAI) was decreased with later seeding time. Dry matter yield per plant increase gradually from 45 days before heading date, and was maximum at heading date. Dry matter yield of Lucky Sorghum had a similar tendency at the first cutting, and was increased by early seeding date at the second cutting. Maximum dry matter yield of NK 367 showed at May 10 and the second cutting was possible to May 10. Total Digestible Nutrients (TDN) in Lucky sorghum and NK 367 was the highest with 51.2 and 48.2%, respectively, at May 10, and TDN yield was maximum at May 10.