Pengaruh Populasi dan Pemupukan Fosfor pada Ketahanan Benih Tiga Varietas Kedelai terhadap Deraan Cuaca lapang

Abstract

Field trials have been carried out to produce high quality seed of soybean through the manipulation of population levels and phosphorus fertilizer doses. Soybean cv. Lokon, cv. Kerinci and cv. Americana were used. Seed viability of cv. Americana was the lowest if compared to those of cv. Lokon and cv Kerinci. The highest viability of seed oj'cv. Lokon was achieved from 800,0a).from 200, 0a) plants/ha. Seed of ev. Americana plants/ha, cv. Kerinci from 400,000 plants/ha, and cv. Americana was more susceptible to field weathering ifproduced from the population of equal or more than 400 000plants/ha, whereas seed of cv. Lokon was of the opposite and seed of&rinci was not aflected by the population levels.