Optimum cultivation method to obtain high quality and high yield stability in the malting barley cultivar 'New Sachiho Golden'
2017
Oyama, M. | Yamaguchi, M. | Oozeki, M. | Sekiwa, T. | Toyoshima, T. | Suzuki, Y. | Shirama, K. | Arai, S. | Sotome, T. | Kato, T.
In 2015, a new malting barley cultivar, 'New Sachiho Golden', was submitted for registration as a new variety. The use of 'New Sachiho Golden' is expected to expand because it lacks a lipid oxidase that degrades beer. Since 2015, we have investigated the effects of fertilizer, seed amount, and seeding date on its growth, yield components, and malting qualities. With an increased level of fertilization, the number of ears and crude protein content in 'New Sachiho Golden' were greater than those obtained using a normal level of fertilization. With a low seed amount, the panicle number was decreased. With a high seed amount, the 1000-grain weight was decreased. Furthermore, a late seeding date delayed maturation and decreased the number of ears because the number of panicles was decreased. An early seeding date increased the number of hull-cracked grains. Since any reaction triggered by this assay is very similar to that of 'Sachiho Golden' used in the backcross method. So we concluded that the optimum amount of basal nitrogen fertilizer was 0.8 kg /a, the optimum seed amount was 0.85 kg /a and the seeding date was the standard sowing date determined for every area in Tochigi Prefecture.
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