Efficiency of Paraquat as a Weed Control Chemical for Rubber Nurseries
作者:
R.S. Harper,
期刊:
PANS Pest Articles & News Summaries
(Taylor Available online 1975)
卷期:
Volume 21,
issue 4
页码: 401-405
ISSN:0030-7793
年代: 1975
DOI:10.1080/09670877509411433
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Three rates of the post-emergent herbicide paraquat, 0.7, 0.35 and 0.175 kga.i./ha in 560 //ha were applied to weeds between rows of rubber seedlings. At each rate of paraquat, spray drift caused some defoliation of the seedlings but this was considerably higher at 0.7 kg a.i./ha than at the two lower rates. Death of individual seedlings was negligible at 0.175 kg a.i./ha. Weed control increased with dosage, but 0.175 kg a.i./ha gave acceptable control, which was also completely safe to budgrafts. At this rate, bud development was not affected and growth was comparable to the hand-weeded control.
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