Cowpea production as affected by dry spells in no-tillage and conventional crop systems

The objective of this study was to evaluate the effect of different periods of water shortage in no-tillage and conventional crop systems on cowpea yield components and grain yield in the Mossoró-RN region. For this, an experiment was conducted using two tillage systems (conventional and no-tillage)...

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Veröffentlicht in:Semina. Ciências agrárias : revista cultural e científica da Universidade Estadual de Londrina 2013-12, Vol.34 (6Supl1), p.3683-3690
Hauptverfasser: Rômulo Magno Oliveira de Freitas, Jeferson Luiz Dallabona Dombroski, Francisco Cláudio Lopes de Freitas, Narjara Walessa Nogueira, Igor Julyetson Silva Procópio
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Sprache:eng ; por
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Zusammenfassung:The objective of this study was to evaluate the effect of different periods of water shortage in no-tillage and conventional crop systems on cowpea yield components and grain yield in the Mossoró-RN region. For this, an experiment was conducted using two tillage systems (conventional and no-tillage) subjected to periods of irrigation suspension (2; 6; 10; 14; 18 end 22 days), started at flowering (34 days after sowing). Plants were harvested 70 days after sowing, and the studied variables were: Pods length (CV), number of grains per pod (NGV), number of pods per plant (NPP), the hundred grains weight (PCG) and grain yield (kg ha-1). The no-tillage system is more productive than the conventional under both irrigation and water stress treatments. The water stress length affected grain yield and all yield components studied in a negative way, except for the hundred grains weight. Among the systems studied, the no-tillage provides higher values for the yield components, except the hundred grains weight.
ISSN:1676-546X
1679-0359
DOI:10.5433/1679-0359.2013v34n6Supl1p3683