Efeito de bioprotetores em patógenos de sementes e na emergência e rendimento de grãos de milho

Luz, W. C. da

doi:10.1590/s0100-41582001000100003

Cited by 16 publications

(14 citation statements)

References 7 publications

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“…The result afore mentioned can be explained by the fact that seeds remained for 24 hours in the freezer, affecting B. subtilis cells. Different results were found by Angonese et al (2009), in which Bacillus genus bacteria showed great potential to be used as phytopathogenic fungi biological control agents, significantly reducing Fusarium graminearum and Stenocarpella maydis infection in maize seeds (Luz, 2001) and fungi incidence in soybean seeds (Bezerra et al, 2013).…”

Section: Resultsmentioning

confidence: 85%

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Physiological and sanitary quality of maize seeds treated with biological control agents

Silva¹,

Tebaldi²

2017

Científica

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The aim of this study was to evaluate the physiological and sanitary quality of maize seeds (Zea mays L.) treated with fungicide and biological control agents. PZ 677 and PZ 242 maize seeds were treated with Thiran + Carbendazin fungicide and biological control agents Bacillus subtilis and Trichoderma asperellum. Analyzes consisted of germination test, emergence speed index, seedling emergence and seed sanity test. It was verified that the fungicide, the biological control agents and the two hybrids did not influence maize seed germination (85 to 95%), emergence speed index (5 to 9) and seedling emergence (60 to 86%). Seeds treated with the fungicide Thiram + Carbendazin controlled the Fusarium verticillioides and Penicillium spp. fungi, while seeds treated with Trichoderma asperellum only controlled Penicillium spp. Additional keywords: Bacillus subtilis; fungicide; Trichoderma asperellim; Zea mays.Resumo O objetivo do presente trabalho foi avaliar a qualidade fisiológica e sanitária de sementes de milho (Zea mays L.) tratadas com fungicida e agentes de biocontrole. As sementes de milho, PZ 677 e PZ 242 foram tratadas com fungicida Thiran + Carbendazin e os agentes de biocontrole, Bacillus subtilis eTrichoderma asperellum. As análises constituíram de: teste de germinação, índice de velocidade de emergência, emergência de plântulas e teste de sanidade de sementes. Verificou-se que o fungicida, os agentes de biocontrole e os dois híbridos não influenciaram na germinação (85 a 95%) das sementes de milho, no índice de velocidade de emergência (5 a 9) e na emergência (60 a 86%) de plântulas. As sementes tratadas com fungicida Thiram + Carbendazin controlou os fungos Fusarium verticillioides e Penicillium spp. e as sementes tratadas com Trichoderma asperellum controlou apenas Penicillium spp.

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Section: Resultsmentioning

confidence: 85%

“…Luz (2001) and Resende (2003) also observed significant seedling emergence increase in maize seeds treated with T. harzianum.…”

Section: Resultsmentioning

confidence: 88%

Physiological and sanitary quality of maize seeds treated with biological control agents

Silva¹,

Tebaldi²

2017

Científica

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“…Other authors had verified strains of Trichoderma spp. increasing the percentage of germination of other grasses, such as maize and black oats (Luz, 2001;Shoresh et al, 2010;Machado, 2011). As for organomineral fertilizer, Aguiar et al (2009) found an increase in the number of mitoses and lateral roots of grass seedlings, such as maize, suggesting that humic substances may accelerate the seed germination process.…”

Section: Discussionmentioning

confidence: 99%

Promotion of Seedling Growth and Production of Wheat by Using Trichoderma spp.

Oliveira¹,

Muniz²,

Peixoto³

et al. 2018

JAS

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The fungus Trichoderma spp. is known due to its versatility for promoting crop growth and grain yield, improving the nutrient absorption and increasing the grain yield. The objective of this work was to evaluate commercial strains of Trichoderma spp. and an organomineral fertilizer in the early growth promotion and grain yield of wheat plants. Thus, wheat seeds cv. BRS 264 were treated with 2 mL of a Trichoderma suspension (2.5 × 10 8 conidia mL -1 per 100 g seed) and submitted to growth in laboratory until 8 days after sowing (DAS). In the greenhouse experiment, the seeds were sown in an 8 L pot, which received 4.0 × 10 8 conidia of Trichoderma per pot. In both evaluations were: percentage of germination (PG), root length (RL), shoot length (SL), total length (TL), fresh root mass (FRM), fresh shoot mass (FSM), total fresh mass (TFM), dry root mass (DRM), dry shoot mass (DSM), total biomass (BIO), root mass ratio (RMR), shoot mass ratio (SMR) and aerial part/root system ratio (AP/RS). In the greenhouse experiment, paniculation and grain yield were evaluated at 110 DAS. The treatments T. harzianum ESALQ 1306 and T. asperellum URM5911 were considered satisfactory, since they provided grain yield superior to 2,000 kg ha -1 . In addition, T. harzianum ESALQ 1306 provided the best results for PG, RL, SL, TL, FRM, FSM, TFM, DRM, DSM and BIO under greenhouse conditions. The reduced biomass allocation to the root system in seedlings treated with Trichoderma ssp. occurred in the laboratory, which was confirm in greenhouse.

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“…Grandes culturas como o feijoeiro comum (Bernardes et al, 2010;Carvalho et al, 2011), girassol (Guareschi et al, 2012), milho (Luz, 2001) e soja (Mertz et al, 2009;Guareschi et al, 2012) (Amaral et al, 2017). A combinação de espécies de Trichoderma com outros compostos que possam melhorar sua aderência às sementes também pode ser considerado interessante.…”

Section: Introductionunclassified

Sementes de Parapiptadenia rigida (Benth) Brenan tratadas com Trichoderma e polímero produzem mudas com características morfofisiológicas satisfatórias

Missio¹,

Muniz²,

Brum³

et al. 2018

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Parapiptadenia rigida é uma espécie florestal de ocorrência em várias regiões do Brasil, produzida com freqüência em viveiros florestais, sendo a semente sua forma de multiplicação. Geralmente apresenta boa germinação, porém, a qualidade fisiológica e sanitária dos lotes ainda ocasiona perdas em viveiro. O objetivo deste trabalho foi avaliar o tratamento de sementes de P. rigida visando à qualidade de mudas em viveiro. Os tratamentos foram arranjados em fatorial, representados por produto fungicida (biológico, químico e testemunha), polímero (polímero e testemunha), micronutrientes e bioestimulante (micronutrientes, bioestimulante, micronutrientes + bioestimulante, testemunha) com quatro repetições. Aos 60 e 120 dias após a emergência avaliou-se a altura de planta, o diâmetro do coleto e o número de folhas. Ao término do experimento foram pesadas a massa seca da parte aérea, raiz e total, além da relação massa seca da raiz/parte aérea. O tratamento de sementes de P. rigida com Trichoderma sp. e polímero antes da semeadura, promove o crescimento das mudas. A aplicação de micronutrientes e bioestimulante via semente, não contribui para o crescimento de mudas de P. rigida.

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Efeito de bioprotetores em patógenos de sementes e na emergência e rendimento de grãos de milho

Cited by 16 publications

References 7 publications

Physiological and sanitary quality of maize seeds treated with biological control agents

Physiological and sanitary quality of maize seeds treated with biological control agents

Promotion of Seedling Growth and Production of Wheat by Using Trichoderma spp.

Sementes de Parapiptadenia rigida (Benth) Brenan tratadas com Trichoderma e polímero produzem mudas com características morfofisiológicas satisfatórias

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