
%0 Journal Article
%A Akinola, JO 
%A Whiteman, PC 
%T Agronomic studies on pigeon pea (<I>Cajanus cajan</I> (L.) Millsp.). I. Field responses to sowing time
%J Australian Journal of Agricultural Research
%D 1975/02/01
%V 26
%N 1
%P 43-56
%K 
%R https://doi.org/10.1071/AR9750043
%U https://www.publish.csiro.au/paper/AR9750043 
%X A split-plot design was used to investigate the vegetative and reproductive responses of two earlymaturing and two late-maturing Cajanus cajan accessions to eight sowing dates. Pre-flowering to pod-ripening durations varied, depending upon interactions between climatic factors and the photoperiodic responses of the accessions. Quantitative short-day, day-neutral or nearly day-neutral, and intermediate photoperiodic forms were identified. Relationships between day length, radiation, growing degree-days, and seed yield per hectare based on individual monthly harvests and harvest index were established for a sowing density of 2990 plants ha-1. Optimum sowing times were identified as late November-mid January for dry seed production in the latematuring accessions, and not later than December for periodic green pod picking in the earlymaturing accessions. 
