International Sugar Journal

Late-season glyphosate ripener application coupled with post-harvest residue retention impacts subsequent ratoon yields [Full subscriber]

Different sources of plant stress, when present together, can have compounded effects on cane growth and yield. The objectives of this experiment were to determine: 1) if late-season (Nov. 1) glyphosate ripener application increases sucrose yield in the four common commercial sugarcane cultivars grown in Louisiana, USA 2) cultivar differences in susceptibility to injury from residual glyphosate in successive ratoon crops, and 3) if the stress of residual glyphosate on the subsequent ratoon crop is compounded by the presence of post-harvest residue. Glyphosate was applied on Nov. 1 (0.21 kg ai ha-1) to the first-ratoon crop. Two weeks after the…

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