Pigeonpea seed production was evaluated in a field plot experiment, sowed at late planting date (march/1996) in the Experiment Station of Instituto Agronômico, at Campinas, State of São Paulo, Brazil. The treatments consisted of two row spacings (75 and 100 cm) and two plant spacings (7 and 10 cm), arranged in a 2 x 2 factorial with three replications, in a completely randomized design. The parameters evaluated were plant population, plant and pod insertion height, stem diameter, number of branches, pods and seed production per plant, percentage of empty pods, branches contribution on yield, and seed yield. The spacings showed statistically significant effects on stem diameter, number of pods and branches per plant, and contribution of branches on seed production. The plants had lower height, smaller stem diameter and uniform pod maturation, and all these characters are important points to be considered for mechanical harvest purposes. The average seed yield was 821 kg.ha-1 and all studied spacings were adequate for the pigeonpea seed production at late sowing.
pigeonpea; Cajanus cajan (L.) Millsp.; seeds; yield; spacings
