Indonesian Peanut Cultivar Difference in Yield Performance Based on Source and Sink Characteristics

Abstract

Peanuts productivities in Indonesia during the last 17 years (1986 – 2003) were between 0.7 to 1.2 ton/ha dry seeds (Kasno, 2004), although some new varieties that have yield potential 2.0 to 2.5 ton/ha or more have been released, however farmers’ productivity could reach only 50 – 60% of the yield potentials. This research was conducted to clarify cultivar differences in sink and source size as represented by vegetative growth and yield, and as a part of serial research that aimed to increase peanut productivity in Indonesia by better understanding of yield formation in peanut. Experiments were conducted at Bogor Agricultural Universities’ farms, Sawah Baru and Cikarawang (06o33’, S, 106o45’, 250m altitude). Planting started on June 12 and June 20, 2007, respectively using 20 local and national cultivars in each location. Design of experiments are randomized complete block with three replications, and advanced analysis by Tuckey with 5% reliance. Size of experimental unit was (1.6 x 4) m, with planting density 125 000 plants/ha. Urea, SP36 and KCl applied at planting date in the dossage of 45 kg N, 100 kg P2O5 and 50 kg K2O per ha ……………………………………….