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Adsorption Of The Herbicides Diuron, Terbacil, And Simazine To Blueberry Mulches, Laurie Hodges, Ronald E. Talbert
Adsorption Of The Herbicides Diuron, Terbacil, And Simazine To Blueberry Mulches, Laurie Hodges, Ronald E. Talbert
Laurie Hodges
Samples of soil, mulch, and the soil/mulch interface zone were collected from commercial highbush blueberry (Vaccinium corymbosum L.) fields typical in their use of mulch under Arkansas conditions. Mulches included J-year-old hardwood sawdust, 5-year-old hardwood sawdust, and 1-year-old pine needle mulch. Herbicide adsorption (Kd values) of the samples was determined for diuron, terbacil, and simazine. The soils, mulches, and interfaces adsorbed nearly 10 times as much diuron and more than twice as much simazine as terbacil. Adsorption of the herbicides was three to five times greater to the mulches than to the soils. Adsorption was significantly correlated with the organic …
Effects Of Glyphosate On Highbush Blueberry (Vaccinium Corymbosum L.), Laurie Hodges, Ronald Talbert, J. Moore
Effects Of Glyphosate On Highbush Blueberry (Vaccinium Corymbosum L.), Laurie Hodges, Ronald Talbert, J. Moore
Laurie Hodges
Five-year-old 'Collins' highbush blueberries were treated in August with glyphosate (N-phosphonomethyl glycine) at 0.36, 3.6 and 7.2 g/liter acid equivalent as a spot treatment alone or with pruning or applying paraquat (1, 1'-dimethyl-4, 4'-bipyridinium ion) at 1.2 g/liter to remove green tissue prior to glyphosate application. Initial response was terminal dieback of young canes. Symptoms the following spring included additional terminal dieback, leaf and cane morphological aberrations, and elongation of the flower corolla. One year after treatment, regrowth was normal. There was no effect on blueberry yield the season following treatment.