Akbar Hidayatullah Zaini, Didik Hariyono, Karuniawan Puji Wicaksono
In Indonesia, rice is the staple food of the most people of the country, so there are many rice cultivation in various regions, that have good watering system. The plant growth depends on the interaction between environmental and plant genetic factors. This research aims to study the Radiation Use Efficiency (RUE) on the performance of three varieties of rice (Oryza sativa L.) to the plant spacing in rainy season. The experiment was performed using Split Plot Design and repeated three times. The main plot was varieties (V), such as Ciherang Variety, Mentik Variety, and Genjah Arum variety. The sub plot were plant spacing (JT) which consisted of 4 types such as, JT25 = 25 x 25 cm, JT30 = 30 x 20 cm, JT40 = 40 x 15 cm dan JT50 = 50 x 12 cm. The results were analyzed by variance test (F test) at 5% level and 1%. The results showed that there were positive interaction between rice productivity in rainy season with spacing arrangement on Ciherang, Mentik and Genjah Arum varieties. The productivity of Ciherang ranged between 3.48 to 8.43 t ha-1. Results of RUE indicated that there were correlative interaction between varieties and plant spacing. The components of RUE evidenced by the value of R2 0.99 between RUE with rice productivity. © 2017 @ author (s).
Postgraduate Program, Faculty of Agriculture, Brawijaya University, Jl. Veteran, Malang, 65145, Indonesia; Department of Agronomy, Faculty of Agriculture, Brawijaya University, Jl, Veteran, Malang, 65145, Indonesia
