Desiccation in dry edible beans with various herbicides

SoltaniNader,; BlackshawRobert, E; GuldenRobert, H; GillardChris, L; ShropshireChristy,; SikkemaPeter, H

doi:10.4141/cjps2013-061

Cited by 29 publications

(30 citation statements)

References 16 publications

(19 reference statements)

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“…Although tankmix combinations of glyphosate and diquat, glufosinate, flumioxazin, or saflufenacil improved desiccation speed compared with glyphosate alone, the converse was not true; addition of glyphosate did not improve the desiccation efficacy of diquat, glufosinate, flumioxazin, or saflufenacil. This finding is similar to those of Soltani et al (2013) who noted that the addition of diquat, glufosinate, carfentrazone, flumioxazin, or saflufenacil to glyphosate improved the degree of crop desiccation and late-season weed control compared with treatments where only glyphosate was applied. Desiccation of all plant parts by the recently registered harvest aids, flumioxazin and saflufenacil, was equal to or better than previously relied on desiccants such as glyphosate, diquat, and carfentrazone.…”

Section: Desiccationsupporting

confidence: 88%

Effect of five desiccants applied alone and in combination with glyphosate in dry edible bean (Phaseolus vulgaris L.)

et al. 2015

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. 2015. Effect of five desiccants applied alone and in combination with glyphosate in dry edible bean (Phaseolus vulgaris L.). Can. J. Plant Sci. 95: 1235Á1242. Application of dry bean desiccants just prior to crop maturity is common practice by Canadian producers. As dry beans are grown for human consumption it is critical that producers pick desiccants that do not affect crop yield, seed quality, or result in desiccant seed residue levels above accepted levels. In this study the efficacy of glyphosate, diquat, glufosinate, carfentrazone, flumioxazin, and saflufenacil as desiccants was examined for navy, cranberry, pinto, and great northern dry bean. Seed herbicide residues were also tested for each of the dry bean classes tested. Navy, cranberry, pinto, and great northern dry bean yields were not impacted by use of the desiccants diquat, carfentrazone, flumioxazin, or saflufenacil when applied at labelled rates and application timings. Additionally, herbicide residues in seed following application remained lower than maximum residue limits (MRL) established by primary Canadian dry bean export partners. Generally, dry bean colour, irrespective of class, was not altered by desiccant use; diquat and flumioxazin caused minor increases in the degree of red and yellow seed pigmentation for cranberry bean only. Although colour differences were noted using a Chroma meter the differences were slight and would not likely be of economic importance. Application of glyphosate did not affect crop yield, and seed residue levels were below MRLs for navy, pinto, and great northern bean. However, seed glyphosate residue levels were above the MRL for cranberry bean when glyphosate was applied alone or tankmixed with carfentrazone, flumioxazin, or saflufenacil. Seed residue levels were also above listed MRLs for some export countries when glufosinate was applied to navy, cranberry, and pinto bean, although crop yield and seed quality remained unaffected. These findings suggest that growers and contractors should avoid using glufosinate as a dry bean desiccant at least for some markets and that care should be taken when selecting glyphosate as a desiccant, especially for cranberry bean. Across all market classes desiccation progress of bean leaf, stem, and pod tissue was slowest when glyphosate and carfentrazone were used.

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Section: Desiccationsupporting

confidence: 88%

Effect of five desiccants applied alone and in combination with glyphosate in dry edible bean (Phaseolus vulgaris L.)

et al. 2015

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“…Previous research on harvest aids reported that the application of glyphosate at five rates, from 0.56 to 3.36 kg, 3 weeks before soybean harvest, resulted in decreased soybean yield [ 9 ], and application before physiological maturity resulted in decreased seed weight, emergence, and vigor [ 10 , 11 ]. It was also reported that the intent of pre-harvest, crop harvest aid application was to rapidly dry vegetative and reproductive plant tissues, including seeds, without affecting seed yield and seed quality [ 12 , 13 , 14 ]. It was reported that the application of glyphosate at 1%, 10%, or 100% of an 890 g ai ha -1 rate to soybean near seed maturity had significant effects on germination and/or growth of the resulting F1 generation [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Harvest-Aids on Seed Nutrition in Soybean under Midsouth USA Conditions

Bellaloui

Bruns

Abbas

et al. 2020

Plants

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Interest in using harvest aids (defoliants or crop desiccants) such as paraquat, carfentrazone-ethyl, glyphosate, and sodium chlorate (NaClO3) have become increasingly important to assure harvest efficiency, producer profit, and to maintain seed quality. However, information on the effects of harvest aids on seed nutrition (composition) (protein, oil, fatty acids, sugars, and amino acids) in soybean is very limited. The objective of this research was to investigate the influence of harvest aids on seed protein, oil, fatty acids, sugars, and amino acids in soybean. Our hypothesis was that harvest aid may influence seed nutrition, especially at R6 as at R6 the seeds may still undergo biochemical changes. Field experiments were conducted in 2012 and 2013 under Midsouth USA environmental conditions in which harvest aids were applied at R6 (seed-fill) and R7 (yellow pods) growth stages. Harvest aids applied included an untreated control, 0.28 kg ai ha−1 of paraquat, 0.28 kg ai ha−1 of paraquat, and 1.015 kg ai ha−1 of carfentrazone-ethyl (AIM); 6.72 kg ai ha−1 sodium chlorate, 1.015 kg ai ha−1 carfentrazone-ethyl; and 2.0 kg ae ha−1 glyphosate. Results showed that the application of harvest aids at either R6 or R7 resulted in the alteration of some seed composition such as protein, oil, oleic acid, fructose, and little effects on amino acids. In addition, harvest aids affected seed composition constituents differently depending on year and growth stage. This research demonstrated the possible alteration of some nutrients by harvest aids. This research helps growers and scientists to advance the understanding and management of harvest aids and investigate possible effects of harvest aids on seed nutrition.

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“…It moves both acropetally and basipetally in plants and affects symptoms similar to other contact herbicides (Soltani et al, 2010 ). Glufosinate can translocate within plants, but has rapid phytotoxicity that limits its mobility (Grossmann et al, 2010 ; Soltani et al, 2013 ). Pyraflufen-ethyl and flumioxazin are also potential harvest aids for lentil crops in Western Canada (Risula, 2014 ; Zhang et al, 2016 ) and are commonly used as desiccants in cotton (Griffin et al, 2010 ) and common bean (Soltani et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

“…Glufosinate can translocate within plants, but has rapid phytotoxicity that limits its mobility (Grossmann et al, 2010 ; Soltani et al, 2013 ). Pyraflufen-ethyl and flumioxazin are also potential harvest aids for lentil crops in Western Canada (Risula, 2014 ; Zhang et al, 2016 ) and are commonly used as desiccants in cotton (Griffin et al, 2010 ) and common bean (Soltani et al, 2013 ). Overall, minimal research has been conducted to assess the impact of the complete spectrum of harvest aids (e.g., diquat, pyraflufen, glufosinate ammonium, flumioxazin, and saflufenacil) alone or in combination with glyphosate with respect to their effects on seed biology and post-harvest processing of lentil.…”

Section: Introductionmentioning

confidence: 99%

Influence of Harvest Aid Herbicides on Seed Germination, Seedling Vigor and Milling Quality Traits of Red Lentil (Lens culinaris L.)

2017

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Most red lentil produced worldwide is consumed in dehulled form, and post-harvest milling and splitting qualities are major concerns in the secondary processing industry. Lentil producers in northern temperate regions usually apply pre-harvest desiccants as harvest aids to accelerate the lentil crop drying process and facilitate harvesting operations. This paper reports on field studies conducted at Scott and Saskatoon, Saskatchewan, Canada in the 2012 and 2013 cropping seasons to evaluate whether herbicides applied as harvest aids alone or tank mixed with glyphosate affect seed germination, seedling vigor, milling, and splitting qualities. The site-year by desiccant treatment interaction for seed germination, vigor, and milling recovery yields was significant. Glyphosate applied alone or as tank mix with other herbicides (except diquat) reduced seed germination and seedling vigor at Saskatoon and Scott in 2012 only. Pyraflufen-ethyl (20 g ai ha−1) applied with glyphosate as well as saflufenacil (36 g ai ha−1) decreased dehulling efficiency, while saflufenacil and/or glufosinate with glyphosate reduced milling recovery and football recovery, although these effects were inconsistent. Application of diquat alone or in combination with glyphosate exhibited more consistent dehulling efficiency gains and increases in milling recovery yield. Significant but negative associations were observed between glyphosate residue in seeds and seed germination (r = −0.84, p < 0.001), seed vigor (r = −0.62, p < 0.001), dehulling efficiency (r = −0.55, p < 0.001), and milling recovery (r = −0.62, p < 0.001). These results indicate application of diquat alone or in combination with glyphosate may be a preferred option for lentil growers to improve milling recovery yield.

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Desiccation in dry edible beans with various herbicides

Cited by 29 publications

References 16 publications

Effect of five desiccants applied alone and in combination with glyphosate in dry edible bean (Phaseolus vulgaris L.)

Effect of five desiccants applied alone and in combination with glyphosate in dry edible bean (Phaseolus vulgaris L.)

Effects of Harvest-Aids on Seed Nutrition in Soybean under Midsouth USA Conditions

Influence of Harvest Aid Herbicides on Seed Germination, Seedling Vigor and Milling Quality Traits of Red Lentil (Lens culinaris L.)

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