Physiological Quality of Carioca Bean Seeds Submitted to the Application of Desiccant Herbicides in Two Periods

Castoldi, Camile Thais; Radünz, Lauri Lourenço; Galon, Leandro; Aspiazú, Ignácio; Forte, César Tiago; Scariot, Maurício Albertoni; Souza, Darik Oliveira

doi:10.1590/s0100-83582019370100154

Cited by 5 publications

(8 citation statements)

References 23 publications

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“…The effectiveness of paraquat in this modality has been highlighted in several studies (Pinto et al, 2014;Goffnett et al, 2016). Saflufenacil has been evaluated in some studies; in general, it is a good defoliant; however, it can interfere with the quality of seeds or bean yield (Goffnett et al, 2016;Castoldi et al, 2019;Silva et al, 2020), requiring adequate positioning to achieve the expected performance. Other options for paraquat include glufosinate (Soltani et al, 2013;Goffnett et al, 2016;Castoldi et al, 2019), diquat (Soltani et al, 2013;McNaughton et al, 2015) and flumioxazin (Soltani et al, 2013).…”

Section: Overview Of Paraquat Use In Brazil and Other Countriesmentioning

confidence: 99%

“…Saflufenacil has been evaluated in some studies; in general, it is a good defoliant; however, it can interfere with the quality of seeds or bean yield (Goffnett et al, 2016;Castoldi et al, 2019;Silva et al, 2020), requiring adequate positioning to achieve the expected performance. Other options for paraquat include glufosinate (Soltani et al, 2013;Goffnett et al, 2016;Castoldi et al, 2019), diquat (Soltani et al, 2013;McNaughton et al, 2015) and flumioxazin (Soltani et al, 2013). Therefore, diquat and glufosinate, particularly, should have increased in the pre-harvest desiccation of beans.…”

Section: Overview Of Paraquat Use In Brazil and Other Countriesmentioning

confidence: 99%

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Agronomic implications of paraquat ban in Brazil

Albrecht¹,

Albrecht²,

Silva³

2022

Advances in Weed Science

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This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. Paraquat: mode of action and historical aspectsParaquat and diquat are bipyridylium herbicides with photosystem I electron diversion mode of action. They have contact action, limited translocation and rapid Abstract: Background: Paraquat is a broad spectrum herbicide used particularly in burndown, in pre-plant of row crops and in the pre-harvest desiccation of some crops. In Brazil, paraquat was re-evaluated by Anvisa, leading to a prohibition of production and sales on September 22, 2020, and used until July 31, 2021. Objective: The objective of this review is to characterize the use of paraquat in Brazil and describe the status in other countries, particularly the agronomic implications of its ban, possible replacements, and scenarios. Review: The use of paraquat is important for weed management in different production systems. Owing to its toxicity, its use has been reevaluated in several countries. For pre-harvest desiccation of soybeans, diquat, glufosinate, and some combinations with Protox inhibitors are highlighted as alternatives to paraquat. For pre-harvest desiccation of common beans, diquat, saflufenacil, and glufosinate could be used; however, only glufosinate could be used for wheat. For managing broadleaves weeds, glufosinate, saflufenacil, carfentrazone, and diquat are effective alternatives. Diquat may be less effective in controlling Conyza spp. resistant to paraquat. For grasses control, glufosinate, in addition to ACCase inhibitors and possible mixtures, may be helpful. Although pre-emergent herbicides are not classified as desiccant herbicides, they contribute to weed management. The adoption of herbicide-tolerant crops, mechanical control, and cover crops can be added as agricultural practices for integrated weed management. Conclusions: Due to the ban on paraquat, challenges arise, and the most often suggested replacements are glufosinate, diquat, and Protox inhibitors; however, grass control will be of greater concern.

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Section: Overview Of Paraquat Use In Brazil and Other Countriesmentioning

confidence: 99%

Section: Overview Of Paraquat Use In Brazil and Other Countriesmentioning

confidence: 99%

Agronomic implications of paraquat ban in Brazil

Albrecht¹,

Albrecht²,

Silva³

2022

Advances in Weed Science

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“…(Kappes et al 2012). However, to anticipate the harvest, it is necessary to use techniques that favor this procedure, because the closer to the physiological maturity, the higher the water content of the seeds, in addition to the plants having a high number of branches and green leaves, aspects that make mechanized harvesting unfeasible (Castoldi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Desiccation, with the use of herbicides appropriate for this procedure, results in rapid drying of all parts of the plant, allowing for early harvest (Kappes et al 2012), since the seeds will reach the indicated water content for mechanical harvesting in a shorter period when compared to those in which the loss of water occurs naturally. When properly carried out, the application of desiccant promotes uniformity of crop maturation, allows for an earlier harvest, reduces yield losses and also maintains the physical, physiological and sanitary characteristics of the seeds, even when submitted to storage (Lamego et al 2013;Castoldi et al 2019). This technique can also eliminate weeds that are eventually infesting the crop, favoring the harvesting process (Pereira et al 2015;Krenchinski et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The feasibility of using herbicides for desiccation, in order to anticipate harvest, has been studied by several authors, in crops such as soybean [Glycine max (L.) Merill] (Daltro et al 2010;Botelho et al 2019), beans (Phaseolus vulgaris L.) (Coelho et al 2012;Kappes et al 2012) and wheat (Triticum aestivum L.) (Tarumoto et al 2015;Fipke et al 2018). However, there are few studies that have evaluated the efficiency of using low doses to desiccate carioca bean seeds (Castoldi et al 2019). Still, few studies used the water content as a parameter to define the times of herbicide application, mainly for the bean crop.…”

Section: Introductionmentioning

confidence: 99%

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Quality of bean seeds submitted to doses of desiccant herbicides at application periods

Castoldi¹,

Galon²,

Radünz³

et al. 2022

Commun. Plant Sci.

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Harvesting seeds at physiological maturity is characterized by preserving the quality of the seeds and preventing them from being exposed to deterioration, but the high humidity makes mechanized harvesting unfeasible at this stage. The objective of this work was to verify the feasibility of applying desiccant herbicides in reduced doses, at different times, to the physical and sanitary quality of carioca bean seeds. The experiment was carried out in a randomized complete block design, in a 2x3x4+1 factorial arrangement, with four replications. The carioca bean plants, cultivar BRS Pérola, were desiccated when the seeds had 42 and 30% water content, with ammonium-glufosinate, saflufenacil and diquat, at doses of 0, 50, 75 and 100% in relation to the average dose recommended for seed desiccation. The additional treatment without application of the desiccant was harvested with 18% water content. Analyzes of thousand seed weight, hectoliter weight, electrical conductivity and sanity test were performed. The use of desiccant herbicides and the increase in their doses, at both times of application, reduces the hectoliter weight, increases the electrical conductivity and increases the incidence of Penicillium spp., Aspergillus spp. and Fusarium spp, however, with minimized values when applying desiccants in reduced doses (50 and 75% of the recommended dose). It is feasible to apply ammonium-glufosinate, saflufenacil and diquat with 30 and 42% of water, to anticipate the harvest when using 50% of the recommended average dose. Harvesting seeds with moisture close to 18% is indicated when there is low rainfall and reduced relative humidity between physiological maturity and harvest. Highlighted Conclusion1. Harvesting bean seeds with water contents of 30 and 42% and without the application of desiccants provided the best physical and sanitary quality of the seeds. 2. The desiccation in bean seeds using the recommended average dose increases electrical conductivity, reduces the hectoliter weight, and causes a loss in sanitary quality of the seeds. 3. It is feasible the application glufosinate-ammonium, saflufenacil, and diquat for anticipating harvest when 50% of the recommended average dose is used.

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Variability among common bean lines for maximum dry matter accumulation in the grains

Miguel,

Teixeira,

Abreu

et al. 2023

Pesq. agropec. bras.

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The objective of this work was to verify if there is variability in the dry matter accumulation rate of grains of the carioca-type common bean, as well as to identify the success of selection for this trait and the best time for harvest. Sixteen lines with carioca-type grains were evaluated in three sowing seasons through samples of five plants obtained at regular intervals. A quadratic equation was used to estimate the number of days to obtain the maximum dry matter in the grains. A low variability was observed among the lines, discouraging selection for this trait. The ideal moment for harvesting is when 100% of the grains present the typical stripes of carioca common bean, which may vary among and within pods of the same plant. If the harvest is carried out before complete physiological maturation is reached, the dry matter in the grains decreases, on average, 2.75% per day.

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Physiological Quality of Carioca Bean Seeds Submitted to the Application of Desiccant Herbicides in Two Periods

Cited by 5 publications

References 23 publications

Agronomic implications of paraquat ban in Brazil

Agronomic implications of paraquat ban in Brazil

Quality of bean seeds submitted to doses of desiccant herbicides at application periods

Variability among common bean lines for maximum dry matter accumulation in the grains

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