Effects of Seeding Rates on Growth, Forage Yield and Feed Value of Cassia mimosoides var. nomame
2000
Cho H.K. | Oh E.K. Cheju National University, Cheju (Korea Republic)
Cassia mimosoides var. nomame was grown at five seeding rates (10, 20, 30, 40 and 50 kg/ha) from March 31 to September 21, 1998 at Cheju to determine influence of seeding rate on agronomic characters, and forage yield and quality. Days to flowering increased from 126 to 129 days as seeding rate increased from 10 to 50 kg/ha. The plant height increased from 86 to 99 cm as seeding rate was increased from 10 to 30 kg/ha and then decreased to 93 cm at a rate of 50 kg/ha. With increasing seeding rate, stem diameter quadratically decreased and the number of branches and green leaves per plant linearly decreased but the number of withering leaves per plant linearly increased. As seeding rate increased from 10 to 30 kg/ha, fresh forage, dry matter, crude protein, and total digestible nutrients (TDN) yield increased from 30.7 to 49.1, 7.5 to 12.2, 0.90 to 1.57 and 4.09 to 7.09 MT/ha, respectively, and then decreased with further increased seeding rates. Crude protein, ether extract, nitrogen free extract, and TDN content increased 12.1 to 14.2%, 2.2 to 2.9%, 35.1 to 39.2%, 54.8 to 60.3%, respectively, but crude fiber content decreased 39.8 to 33.3% and crude ash declined 4.9 to 3.8% as seeding rate increased from 10 to 50 kg/ha. The optimum seeding rate to obtain the highest TDN yield was setimated to be 36kg/ha.
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