Effect of the drying stage of the rice stubble on the weeds and the beans (Phaseolus vulgaris L.).
DOI:
https://doi.org/10.15517/am.v14i1.11991Abstract
The assay
was conducted at the Fabio Baudrit Experiment Station of the
University of Costa Rica, located in the San Jose district, in
Alajuela, Costa Rica. The effect of drying the rice stubble
with glyfosate was measured, between June 2000 and
January 2001, in different periods before the direct planting
of the beans; on the control of weeds and the bean yield. The
application of glyfosate on the rice stubble and weeds, before
planting the beans or after planting, but before the
emergence, allowed an adequate ground cover by the stubbles
during the critical competence period of the bean, which
reduced the presence of weeds and achieved high bean yields
without applying other herbicides. When the holding period
was prolonged (30-45 days) after the glyfosate application,
the ground cover was poor due to the advanced decomposing
stage of the stubble. There was a larger presence of weeds
and negative effects on the bean production when the weed
control was not timely.
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