The effect of bokashi rice straw on the increase in production of three purple sweet potato varieties (Ipomoea batatas L.)

Abstract

This research was conducted in the agricultural area of Pasar Kawat Village, Beringin District, Deli Serdangn Regency, North Sumatra Province, Indonesia. Conducted from June to November 2015. The study aimed to find purple sweet potato varieties that produced high and optimal bokashi rice doses. The experimental design used was a randomized block design with two treatment factors and three replications. The first treatment factor is the variety consisting of : Antin - 1, Antin - 2 and Antin - 3. The second treatment factor is the bokashi dose of rice straw consisting of four treatments: 0 tons/ha, 5 ton/ha, 10 tons/ha, and 15 tons/ha . The results showed that the highest variety of purple sweet potato which gave the highest production was found in the treatment of Antin 2 varieties and bokashi doses of rice straw 5 tons/ha with tuber production that could be achieved 908.07 g/plot (4.54 tons/ha).