Technical feasibility of the use of groundcover in papaya (Carica papaya L.) by means of the localized application of herbicides.
Keywords:Carica papaya, ridge planting, herbicides, fertilization place.
An essay was conducted to
evaluate the feasibility of implementing the use of natural
groundcover in papaya (Carica papaya L.) under a ridge
planting system. The objective was to establish a weed-free
zone on the ridge area to allow the placement of fertilizer
close to the root systems, thus avoiding competition between
the roots of the papaya and those of the groundcover. Four
herbicides were used (acetachlor, pendimethaline, oxyfluorfen
and glyphosate) to asses their control of cyperous, broadleaf
and grass weeds. Possible damage to papaya plants due to the
effect of the herbicides was also monitored as well and their
response in terms of growth and yield. Glyphosate was
efficient for gramineous weed control but not against
broadleaves. Very good control for all weed types was
obtained during the 90 day post-transplant period with the
oxyfluorfen + pendimethaline and acetachlor treatments. The
first two herbicides affected papaya plants slightly when they
were applied 10 days after transplant. Acetachlor didn’t cause
any damage to the papaya. There were no differences among
the treatments in regard to growth and yield.
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