Optimization of Planting Range and Seed Age Toward the Growth and Production Rice Paddy (Oryza Sativa L.)

Abstract

This research is based on field experiment, it was conducted in Purwodadi village, Padangsidimpuan Batunadua, Padangsidimpuan, North Sumatera from July up to October 2017. The aim of this research was to obtain the most optimal of planting range and seeds age toward the growth and production of rice paddy. This experiment used Randomized Block Design (RBD) with factorial pattern which was done by three repetitions. The first factor was planting range with four steps that consist of comparison 2:1 (20 x 10 x 40 cm), comparison 3:1 (20 x 10 x 40 cm), 20 x 20 cm, 30 x 30 cm. The second was seeds age with 14 days experiment after sowing, 21 days after sowing, 28 days after sowing. The result of the research showed that there was interaction between the treatment of planting range 30 x 30 cm and seed age in 21 days after sowing on plant potential production. It is 13.58 ton/ha. The comparison of planting range 30 x 30 gave better result toward the number of seedlings, planting height, and plant potential production 13,58 ton/ha.

The age of the seed in 28 days after sowing gave higher result toward the index of leaf area, assimilation net rate, planting growth rate, planting height, the number of seedlings, the number of grain per panicle and the weight of 1000 rice paddy. While the treatment of 21 days seeds age after sowing gave result in plant potential production (ton/ha).