Organosilicone adjuvants increased the efficacy of glyphosate for control of weeds in citrus (Citrus spp.)
1992
Reddy, K.N. | Singh, M.
A field study was conducted to evaluate the effectiveness of Kinetic and Sylgard 309 organosilicone adjuvants to increase the efficacy of glyphosate for control of Florida pusley (Richardia scabra L.), southern crabgrass [Digitaria ciliaris (Retz.) Koel], hairy beggarticks (Bidens pilosa L.), camphorweed [Heterotheca subaxillaris (Lam.) Britt. and Rusby], bahiagrass (Paspalum notatum Fluegge), bermudagrass [Cynodon dactylon (L.) Pers.], and torpedograss (Panicum repens L.). Glyphosate, either at 0.5 or 1.0 kg a.i./ha, was applied alone or in combination with Kinetic, Sylgard 309, or X-77 using a tractor-mounted boom sprayer that delivered 187 liters.ha-1 at 207 kPa pressure. Glyphosate applied at 0.5 kg.ha-1 controlled >94% of Florida pusley, southern crabgrass, hairy beggarticks, and camphorweed. Glyphosate efficacy improved on Florida pusley and southern crabgrass when applied with the adjuvants. Glyphosate, regardless of adjuvant, completely controlled hairy beggarticks and camphorweed. Control of bahiagrass, bermudagrass, and torpedograss with adjuvants was better than without adjuvants. However, glyphosate with Kinetic or Sylgard 309 was more effective in suppressing regrowth of these perennial grasses than glyphosate with X-77.
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