Improving diquat efficacy on grasses by adding adjuvants to the spray solution before use

Planta Daninha

T.k. Gitsopoulos²  C.a. Damalas¹  I. Georgoulas² 

[1] ,IInstitute of Plant Protection of ThessalonikiThessaloniki,Greece

关键词: non-ionic surfactant;    paraffinic oil;    vegetable oil;    fatty acids methyl esters;    organosilicone;    bipyridyliums;    surfatante não-iónico;    óleo de parafina;    óleo vegetal;    ácidos graxos metilados;    organossilicone;    bipiridilos;   

DOI  :  10.1590/S0100-83582014000200013

来源: SciELO

【 摘 要 】

The effect of five adjuvants (non-ionic surfactant, paraffinic oil, vegetable oil, mixture of fatty acids methyl esters plus surfactant blend, and organosilicone) on diquat efficacy was assessed on poverty brome, sterile oat, and Italian ryegrass in field and pot experiments. All tank mixtures with diquat increased diquat efficacy from 50-54% to 77-98% as for fresh weight reduction, indicating significant enhancement of diquat efficacy on grasses. The increased efficacy was most likely attributed to better droplet retention and diffusion on the leaf surfaces. When combined with non-ionic surfactant, diquat showed slightly more rapid control of grass weeds (i.e. symptoms were visible within a few hours after application).

【 授权许可】

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