Effect of the Double Cropping at High Altitude Area Which was Cultivated Suitable Forage Crop
2000
Han Sung-Yoon National Livestock Research Institute Tae Kwallyong Branch (Korea Republic) Kim Dae-Jin Donga University, Pusan (Korea Republic)
This study was conducted to increase the utility and productivity of forage crops at high altitued areas. For that purpose, 21 cultivars of corn and 2 cultivars of rye were cultivated for 3 years using a randomized block designed with 3 replications. The results obtained were as follows. 1.In the Taekwallyong area (800m above sea level) which has a short frostless period, all the seeding and harvest of corn must be finished within about 135 days between mid May, the time of the last frost, and late September, the time of the first frost. 2.It was relatively safe for the early maturity cultivar(110days) and the medium maturity cultivar(120days), compared to the late maturity cultivar(130days) which might have had the possibility of an overlapping period between the time of harvest and the first frost in high altitude areas. 3.The productivity of forage corn, which is the most efficient crop for capturing solar energy, varied significantly with the climate circumstances but the productivity of Taekwallyong showed similar results of 19 M/T/ha, compared with 20 M/T/ha in Suwon from the '96~'98 study. 4.Rye could be cultivated in high altitude areas and when corn was raised as a second crop after rye in the same year, it was possible to increase the productivity of dry matter yield by 20% through double cropping(p0.05).
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