Screening and Safety Evaluation of Herbicides in Oat Field

Abstract

In order to screen safe and efficient herbicide varieties and combinations suitable for oat field use, field plot experiment method was used to spray stems and leaves from 3 to 5 leaf stages of oat. The results showed that the control effects of single-dose treatment of 45.9% difluoro-dioctyl SC 450 mL/hm2 and 20% tribenuron-chlorofluoropyroxyacetic acid WP 900 g/hm2 on weeds in oat fields were all above 80%, herbicides 10% tribenuron-methyl WP 150 g/hm2, 42% 2-methyl·fluroxypyr EC 1125 mL/hm2, 48% bentazone AS 3000 mL/hm2 and 72% 2,4-D butylate EC 150 mL/hm2 mixed use, and 10% pyrazone WP 300 g/hm2 + 56% 2-methyl 4-sodium chloride WP 1200 g/hm2 + 50 g/L difluorsulphonamide SC 90 mL/hm2 mixed use of broad-leaved weeds in oat field control effect were more than 80%, significantly higher than the conventional herbicide used in production, 48% bentazone AS 3000 mL/hm2 + 72% 2,4-D butylate EC 150 mL/hm2 and 2-methyl·fluroxypyr EC 1125 mL/hm2 + 72%. The test results enriched the available herbicide varieties for chemical weeding in oat fields and could be applied in oat fields.