Shade Intensity Respons on Growth of Local Rice Varieties

Abstract

responses to shading gradients may play an important role in establishment success of local rice varieties. Low radiation caused by industrial development and environment change has become a limitation in crop production in Indonesia. This study aims to evaluate shade intensity respons on growth of local rice varieties. This study was conducted in Balai Pengkajian Teknologi Pertanian, Pagar Merbau, Deli Serdang, North Sumatra. The research used completely randomized design with two factors. The shade intensity (N) were 25%, 50% and no shade intensity as a control. Whereas Local Rice Varieties were Sigodang, Kukubalam and Ramos. The result indicated that local rice varieties showed significant effect on the growth and production variable such as penicle length where kuku balam variety was the highest among the varieties, followed by ramos then sigodang. Similarly 1000-grais weight and number of filled grains was fond on kuku balam as the highest. Local rice varieties showed significant effect on number of empty grains where sigodang variety was the highest, followed by kuku balam then ramos on local rice varieties and shade intensity. The shade intensity showed no significant effect on each observations. Therefore, knowing the right of local rice varieties under shading stress are important for plant breeders.