Uso industrial de grãos de cevada de lavouras dessecadas em pré-colheita

Caierão, E.; Acosta, A. da S.

doi:10.1590/s0100-204x2007000900009

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…High moisture in the inner layers of the seed activate germination and deterioration processes, and reduce the physiological quality of the seeds (Peske et al, 2012). Similar results were obtained by Caierão and Acosta (2007), in which early harvest of barley of treatments with glyphosate and paraquat applied for preharvest desiccation favored the qualitative maintenance of the seeds in relation to the treatment without chemical desiccation. Germination of the wheat seeds changed according to the herbicide and the application rate (Table 5).…”

Section: Resultssupporting

confidence: 83%

“…differ between the herbicides; however, they were superior to the control. Preharvest desiccation provides for qualitative maintenance of seeds compared to treatments without desiccation (Caierão and Acosta, 2007). In application in the soft dough to hard dough stage, final germination was higher in the treatment with glufosinate than in the control or 2,4-D+glyphosate treatment in the first and second harvest (Table 7).…”

Section: Resultsmentioning

confidence: 99%

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Yield, germination and herbicide residue in seeds of preharvest desiccated wheat

et al. 2018

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The goals of this study were to evaluate herbicide application rates at different timings for preharvest desiccation of wheat (Trial 1), as well as to evaluate the effect of the timing of herbicide desiccation at preharvest and harvest timing (Trial 2) on yield, germination, and herbicide residue in wheat seed. In Trial 1, treatments consisted of two application rates of glufosinate, glyphosate, paraquat, or paraquat+diuron and a control without application; application time periods were in the milk grain to early dough stage, soft dough to hard dough stage, and hard dough stage. In Trial 2, treatments consisted of different application time periods (milk grain to early dough stage, and soft dough to hard dough stage), different herbicides (glufosinate, 2,4-D+glyphosate, and untreated control), and different harvest times (5, 10 and 15 days after herbicide application). One thousand seeds weight, yield, first and final germination count, and herbicide residue on seeds were evaluated. Preharvest desiccation with paraquat, glufosinate, and 2,4-D+glyphosate at the milk grain to early dough stage reduces wheat yield. Regardless of the herbicide and application rate, application in the milk grain to early dough stage and soft dough to hard dough stage provides greater germination of wheat seeds, except at the lower dose of paraquat. Systemic herbicides accumulate more in wheat seeds.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Yield, germination and herbicide residue in seeds of preharvest desiccated wheat

et al. 2018

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“…However, Caierão and Acosta (2007), when using paraquat and glyphosate on barley crops, observed no negative interference of the desiccants on seed vigor. It should be emphasized that the values obtained in the germination test, in the present study, allow the seeds obtained -only where the treatment was desiccated with glyphosate at stage 11.2 -to be rated as suitable for sale because according to Normative Instruction No.…”

Section: Resultsmentioning

confidence: 88%

Yield and quality of wheat seeds as a function of desiccation stages and herbicides

et al. 2014

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This study aimed to evaluate the yield and seed quality of wheat, cultivar ‘Quartzo’, harvested after desiccation with two desiccants (glyphosate and paraquat) at two reproductive stages (11.2 and 11.3). The study used a randomized block experimental design in a 3 x 2 factorial arrangement (two desiccants and a control) and two growth stages of wheat, with four replications. The following were assessed: seed yield, thousand seed weight and seed quality (germination, first germination count, root and shoot weight, seedling dry and fresh weight, accelerated aging, electrical conductivity, cold germination, potassium leaching). Based on the results, it can be concluded that the use of desiccants on wheat at the two stages of development have not affected yield, but they have negatively influenced physiological seed quality. Generally, the herbicide glyphosate showed the lowest phytotoxic effect on seeds, and desiccant application at stage 11.2 resulted in higher physiological seed quality compared with application at stage 11.3.

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“…These results differ from those obtained by Kappes et al (2009), where the application of diquat resulted in a lower percentage of normal soybean seedlings in the cold tests. Caierão and Acosta (2007) concluded that the use of glyphosate did not affect the germination of barley seeds. In relation to the accelerated aging test (Table 7), all treatments presented higher results in the second application period with the additional control, followed by paraquat + diuron, diquat and glufosinate ammonium.…”

Section: IIImentioning

confidence: 98%

The Time of Application of Maturing Herbicides Affects the Physiological Quality of Canola Seeds

Pilla¹,

Galon²,

Brandler³

et al. 2019

IJAERS

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Canola (Brassica napus L. var. oleifera) is a winter growing option for producers, however, harvesting is the phase that requires the most care and decision making to avoid losses in productivity. One of the alternatives that can be used to solve this problem is the application of maturing herbicides. Thus, the objective of this study was to evaluate the physiological quality of canola seeds with the use of herbicides, applied in two seasons, for pre-harvest maturation of the crop. The experimental design was a randomized block design, arranged in a factorial scheme 7x2 + 2 (herbicide x season + control) with four replications. Hybrid 50 canola plants received ammonium glufosinate, paraquat, glyphosate, diquat, saflufenacil, 2,4 -D and paraquat + diuron at two times in the crop cycle (G3 -when the first ten the main stem silica has a width greater than 4 cm, and G4 -when the first ten silicas of the main stem begin to mature), in addition to two unselected controls, for each season, the first being harvested on the day of application of the products, and the second kept in the field until the final cycle of the culture. First germination, germination, seedling length, dry mass, cold test and accelerated aging tests were performed. Herbicides applied in the first season (G3) cause the greatest damage to the seeds, and the plants that remained in the field until the end of the crop cycle and did not receive herbicide application (additional control), result in seeds with better physiological quality. The treatments with diquat, paraquat + diuron and glufosinate of ammonium presented higher efficiency with respect to seed quality, being the best period to carry out the maturation practice in the canola crop in the G4 season.

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Uso industrial de grãos de cevada de lavouras dessecadas em pré-colheita

Cited by 5 publications

References 10 publications

Yield, germination and herbicide residue in seeds of preharvest desiccated wheat

Yield, germination and herbicide residue in seeds of preharvest desiccated wheat

Yield and quality of wheat seeds as a function of desiccation stages and herbicides

The Time of Application of Maturing Herbicides Affects the Physiological Quality of Canola Seeds

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