Severidade da mela da soja causada por Rhizoctonia solani AG-1 IA em função de doses de potássio

Basseto, Marco Antonio; Ceresini, Paulo Cézar; Filho, Walter Veriano Valério

doi:10.1590/s0100-54052007000100008

Cited by 18 publications

(13 citation statements)

References 8 publications

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“…PESSOA (1994), BASSETO et al (2007), NAVARINI et al (2007), SANTOS et al (2007, EMBRAPA (2008) LUDWIG et al (2010) and FINOTO et al (2011 stated that the importance of disease control in soybeans has been proven to prevent losses in the experimental conditions where the average of the control plots (without aerial fungicide application) was approximately 70% of the plot yields with chemical. Late season leaf diseases did not affect the crop to the point of significantly differ between treatments, with a confidence level greater than 95% for the final population, pods per plant and grains per pod variables.…”

Section: Resultsmentioning

confidence: 99%

“…The removal or retention of the disease, to the level of economic damage, depends on knowledge of the specific requirements of each and integration of various cultural practices, which include: rotation/succession planting, chemical treatment of seeds, varietal resistance, liming and balanced fertilization, appropriate population and best sowing date, weed control and possibly aerial chemical treatment (PESSOA, 1994;BASSETO et al, 2007;NAVARINI et al, 2007;FINOTO et al 2011). …”

Section: Introductionmentioning

confidence: 99%

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Fungicide application using a trailing boom in soybean fields

Neto

Fornari²,

Bauer

et al. 2013

Eng. Agríc.

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ABSTRACT:The objective of this study was to determine the effects in the yield of soybean crop utilizing a trailing boom sprayer for chemical control of late season diseases. The experimental design was randomized blocks with 04 treatments, which consisted of applying fungicides with a traditional sprayer, trailing boom, the traditional sprayer plus the trailing boom simultaneously and control (without fungicide aerial application) in 05 repetitions per treatment. The variables evaluated were: final plant population, pods per plant, grains per pod, weight of one thousand grains and yield. It was concluded that the control of foliar diseases with fungicides presented weight of one thousand grains and yield significantly higher than the average of plots without fungicide application. The trailing boom did not significantly affect the yield compared to the technology currently used.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fungicide application using a trailing boom in soybean fields

Neto

Fornari²,

Bauer

et al. 2013

Eng. Agríc.

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“…Entre os nutrientes, o potássio é descrito como o que exerce mais influência sobre as doenças, pois aumenta a resistência ao desenvolvimento de alguns patógenos, aumenta a espessura da parede celular, proporciona maior rigidez dos tecidos e promove a rápida recuperação após injúrias (Basseto et al, 2007). A carência de potássio também esta relacionada com a menor síntese de compostos de alto peso molecular, favorecendo o acúmulo de compostos de baixo peso molecular, propiciando o desenvolvimento de doenças (Adebitan, 1998).…”

Section: Tratamentosunclassified

Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

2012

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Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo Rev. Ceres, Viçosa, v. 59, n.1, p. 71-76, jan/fev, 2012 RESUMO ABSTRACT Influence of leaf mineral nutrition on wheat diseasesThe use of fungicide for controlling of wheat foliar diseases is a common practice among farmers. However, due to the environmental impact caused by widespread use, some alternative pathogen controls are needed. This work aimed to evaluate the effect of leaf mineral nutrition on the control of wheat foliar diseases, and its effect on the plant. The experiment was arranged in a randomized block design with four replications and four treatments: 1-control; 2-leaf fertilization at 30 days after emergence (DAE) and at 75 DAE; 3-fungicide at 30 and 75 DAE; and 4-leaf fertilization at 30 DAE and foliar fertilizing + fungicide at 75 DAE. Nine incidence evaluations were carried out for powdery mildew to calculate the area under the disease progress curve; three evaluations for rust severity and gluma spots; and two evaluations for yellow spot yield, mass of fresh and dry matter of aerial parts and root system were determined. There was reduction in the intensity of powdery mildew as a function of leaf fertilization, only in the first evaluation of Recebido para publicação em

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“…O desequilíbrio de nutrientes pode proporcionar maior intensidade das doenças e promover variações nos mecanismos bioquímicos e estruturais de defesa do hospedeiro (Develash & Sugha, 1997;Rodrigues et al, 2003;Balardin et al, 2006;Basseto et al, 2007;Pratissoli et al, 2007). Doses elevadas de K, em solução nutritiva, aumentaram a incidência da cercosporiose em mudas de cafeeiros (Pozza et al, 2000).…”

Section: Resultsunclassified

Adubação orgânica, nutrição e progresso de cercosporiose e ferrugem-do-cafeeiro

Santos¹,

Souza

Pozza

et al. 2008

Pesq. agropec. bras.

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suíno e crotalária (testemunha). A maior área abaixo da curva de progresso da incidência da cercosporiose e da ferrugem foi registrada no tratamento PC (respectivamente 62 e 38% superiores à testemunha). O maior progresso das doenças coincidiu com a elevação no teor de K e redução nos teores de Ca foliares no tratamento PC, comparado às demais fontes de adubação, e resultou em maior desfolha e menor produtividade. Os tratamentos PC+TM e PC+CS reduziram a incidência da cercosporiose em 38% e da ferrugem em 31 e 21%, respectivamente, e aumentou o teor de Ca foliar ao final da fase de granação do cafeeiro, em comparação ao tratamento PC. O equilíbrio nutricional desses cafeeiros conferiulhes maior resistência e reduziu o efeito da bienalidade nas Organic fertilization, nutrition and the progress of brown eye spot and rust in coffee treesAbstract -The objective of this work was to evaluate the effect of organic nutrional sources on the progress of brown eye spot and coffee rust in coffee plants, between November 2003 and November 2005. The experimental design adopted was the randomized blocks, with four replications and six treatment plots: coffee fruit peel + swine waste (CP+SW); castor bean presscake + crotalaria (CBP+Cr); coffee fruit peel (CP); bovine manure + crotalaria (BM+Cr); coffee fruit peel + castor bean presscake (CP+CBP); and standard fertilization used in the farm, which combines compost, castor bean presscake, swine waste and crotalaria (control). The higher area under the incidence progress curves of brown eye spot and coffee rust was obtained by CP treatment (respectively 62 and 38% higher to control). The larger progress coincided with the increase in leaf potassium and decrease of calcium content in CP, compared to other nutrient sources, and it resulted in higher leaf drop and lower yield. CP+CBP and CP+SW reduced in 38% the brown eye spot incidence, and in 31 and 21%, respectively, the coffee rust incidence, and increased leaf calcium content during fruit filling, compared to CP. The better nutritional status of plants increased resistance to diseases and reduced the variation between 2004 and 2005 harvests.

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Severidade da mela da soja causada por Rhizoctonia solani AG-1 IA em função de doses de potássio

Cited by 18 publications

References 8 publications

Fungicide application using a trailing boom in soybean fields

Fungicide application using a trailing boom in soybean fields

Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

Adubação orgânica, nutrição e progresso de cercosporiose e ferrugem-do-cafeeiro

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