Harvesting time and vegetative development of black oats

Abstract

In spite of the fact that black oat presents important traits of agronomic interest, studies addressed to productivity are still in small number for Brazilian conditions. One experiment was carried under field conditions, at Botucatu, SP, Brazil, to study the plant development of Avena strigosa Schreb cv. Comum, grown on a Rhodic Nitisol. The experiments followed a completely randomized block design with three replications. The treatments consisted of weekly harvests, starting 21 days after sowing. Plant characteristics were evaluated at each harvesting time. The highest development of plant was observed at 84 days after sowing, when the panicle emergence started. There was a higher contribution of primary tillers in relation to secondary for the vegetative development and yield components.