Aplicação de fungicida em plantas de arroz irrigado e seu efeito na qualidade de sementes durante o armazenamento

Teló, Gustavo Mack; Marchesan, Enio; Ferreira, Rafael Bruck; Menezes, Nilson Lemos de; Hansel, Dâmaris Sulzbach Santos; Sartori, Gerson Meneghetti Sarzi

doi:10.1590/s0101-31222012000100019

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…These effects can be enhanced by long storage periods, eventually reducing the seed germination potential. In rice, [7] observed that seeds treated to fungicide and stored for various lengths of time experienced reductions in their germination and vigor values under long term storage, regardless of the environmental conditions. It is thus sensible to search for technologies that will allow the storage of treated seeds without losses in their quality, which will facilitate their management by seed producers as well as by the end consumers, rice growers.…”

Section: Introductionmentioning

confidence: 99%

Physiological Performance of Rice Seeds Treated to Thiamethoxam and Placed under Storage

Almeida¹,

Deuner²,

Borges³

et al. 2014

AJPS

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High-yielding crops can only achieve their potential when the appropriate technological tools are applied and weather conditions do not impose restrictions. One such technological tool is the treatment of seeds, in which different products are used and, in some cases, cause little-known effects capable of modifying the plant's metabolism and/or its morphology. The insecticide thiamethoxam alters the plant's physiology and morphology, accelerating its development, thus enhancing its vigor. The objective of this study was to evaluate the influence of thiamethoxam on the physiological performance of rice seeds during storage. The research was conducted in a greenhouse and at the laboratory of the Department of Plant Science, Faculty of Agronomy Eliseu Maciel-UFPel (Federal University of Pelotas). Rice seeds from cultivars INIA Olimar and El Paso L144 were treated to a commercial product containing 350 grams of active ingredient thiamethoxam at doses of 0, 100, 200, 300, 400 and 500 g per 100 kg of seed. Seeds were tested for physiological quality immediately after being treated (check treatment) and at 3, 6, 9 and 12 months under storage, through germination test, cold test, accelerated aging and greenhouse emergence test. The concentration range from 200 to 400 g a.i. 100 kg −1 seed yielded the highest germination and seed vigor values for both rice cultivars during the storage period.

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Section: Introductionmentioning

confidence: 99%

Physiological Performance of Rice Seeds Treated to Thiamethoxam and Placed under Storage

Almeida¹,

Deuner²,

Borges³

et al. 2014

AJPS

View full text Add to dashboard Cite

show abstract

“…A aplicação de fungicidas reduz a severidade de doenças do arroz com aumento de até 42,1% na produtividade de grãos (7) e manutenção da qualidade de sementes e grãos durante o processo de armazenamento (20).…”

Section: Introductionunclassified

Intensidade de doenças foliares, produtividade, massa de mil grãos e grãos manchados em resposta ao número de aplicações de fungicida no cultivar de arroz irrigado SCS 116 Satoru

et al. 2014

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329O arroz (Oryza sativa L.), cultivado e consumido em todos os continentes, é caracterizado como principal alimento para mais da metade da população mundial, destacando-se, principalmente, em países em desenvolvimento, nos quais, desempenha função estratégica ABSTRACT Additional keywords: Oryza sativa, damage, leaf spots, grain quality.The occurrence of leaf diseases in irrigated rice can reduce the yield and the grain quality. The aim of this study was to quantify the response of fungicide application number on leaf disease intensity, productivity, thousand grain weight and spotted grain in irrigated rice. Experiments were conducted with cultivar SCS 116 Satoru in 2011/12 and 2012/13 growing seasons in the city Rio do Oeste, located in Alto Vale do Itajai, Santa Catarina State. Experimental design was in randomized blocks, with four replicates and six treatments constituted of a mixture of fungicides triazole (difenoconazole) and strobilurin (azoxystrobin) in one application at the end of tillering (V8), two applications (V8 + R0, panicle initiation), Bordin, L.C.; Casa, R.T.; Marcuzzo, L.L.; Sangoi, L.; Zancan, R.L. Intensity of leaf diseases, productivity, thousand grain weight and spotted grains in response to the number of fungicide applications on irrigated rice cultivar SCS 116 Satoru. Summa Phytopathologica, v.40, n.4, p.329-333, 2014. three applications (V8 + R0 + R2, booting), four applications (V8 + R0 + R2 + R4, flowering), five applications (V8 + R0 + R2 + R4 + R6, milky grain) and no application (control). Before each application, the incidence and the severity of leaf diseases were determined. In the two seasons, predominant leaf diseases were blast, brown spot and scald. The increase from one to five fungicide applications presents a significant response in reducing the intensity of leaf diseases, with an average increase of 19.5%, 30%, 70.3%, 86.6% and 100.8% in productivity and 0.2%, 13.7%, 28.5%, 41.3% and 54% in thousand grain weight, as well as a reduction of 22%, 31.8%, 44.1%, 75.9% and 168.5% in spotted grains, compared to control.

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Aplicação de fungicida em plantas de arroz irrigado e seu efeito na qualidade de sementes durante o armazenamento

Cited by 2 publications

References 14 publications

Physiological Performance of Rice Seeds Treated to Thiamethoxam and Placed under Storage

Physiological Performance of Rice Seeds Treated to Thiamethoxam and Placed under Storage

Intensidade de doenças foliares, produtividade, massa de mil grãos e grãos manchados em resposta ao número de aplicações de fungicida no cultivar de arroz irrigado SCS 116 Satoru

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