Effects of seed maturity, seeding rate, and planting time on the seed and silage yields or rye [secale cereale L.]
1987
Kang, K.H. | Ryu, H.O. (Yeongnam Univ., Kyongsan (Korea R.). Dept. of Agronomy)
To find out the effects of seed maturity and seeding rate of two planting times on the seed emergence and silage and seed yields of rye, a local variety "Paldanghomil" harvested 30 and 45 days after heading(DAH) was planted at five seeding rates on October(optimum) and November(late) in 1985. At the optimum planting, number of seedlings per unit area and number of tillers per plant were affected by seeding rate, but not by the seed maturities. However, at the late planting, number of seedlings per unit area and number of tillers per plant were higher in the seed harvested 45 DAH, and they were not correlated with seeding rate in both seeds harvested 30 and 45 DAH. Heading date was 2 or 3 days earlier in the seeds harvested 45 DAH in both planting times. Silage yield was higher at the optimum planting and increased as seeding rate increaseed in both planting times. Number of spike and 1000-seed weight were higher at the optimum planting than late planting and higher in the seed harvested 45 DAH than 30 DAH in late planting, but were not different among seeding rates. Seed yield at optimum planting showed no difference between seed maturities and seeding rates, and recommandable seeding rate was 600 seeds per m** (2). At late planting the seed yield of the seed harvested 45 DAH in the seeding rate over 750 seeds per m** (2) approached to the yield of the optimum planting. The seed harvested 30 DAH was unstable because of extremely low emergence rate and yield even at the higher seeding rate in late planting
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