Effect of mulching and volume of glyphosate spray on the control of tigergrass (Saccharum spontaneum L.).
In field trials conducted at Hisar during 1991-92, the effects were evaluated of 1-2% spray solutions of glyphosate ± 0.1% surfactant, applied in high (1000 litres/ha) or low (250 litres) vol. sprays, and mulching with white or black polyethylene, for the control of S. spontaneum. All weed control treatments resulted in 76.7-99.3% control of S. spontaneum, mulching with black polyethylene resulting in the greatest control. All weed control treatments decreased S. spontaneum rhizome DW and total sugars from untreated control values of 375.8 g/0.625 m2 and 8.17 mg/g, resp., to 3.6-102.2 g and 2.84-4.85 mg, resp.