Materiais vegetais aplicados ao manejo agroecológico de Meloidogyne incognita em tomateiro

Melo, Thiago Anchieta de; Serra, Ilka Márcia Ribeiro de Souza

doi:10.1590/0100-5405/187851

Cited by 3 publications

(1 citation statement)

References 10 publications

(8 reference statements)

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“…There is also the possibility that green manure served as a food source for fungi, decreasing nematode parasitism. These hypotheses are supported by the facts that plant organic matter is effective in controlling nematodes (DALLEMOLE-GIARETTA et al, 2010;DALLEMOLE-GIARETTA et al, 2011;MELO;SERRA, 2019;NASCIMENTO et al, 2020) and that fungi and bacteria are sensitive to chemicals produced by plants (CHEN;ABAWI;ZUCKERMAN, 2000;VILCHIS-MARTÍNEZ et al, 2013;PAGNUSSATT et al, 2013). Crotalaria ochroleuca G.Don, for instance, exerts suppressive effects on Pc (VILCHIS - MARTÍNEZ et al, 2013).…”

Section: Resultsmentioning

confidence: 96%

GREEN MANURE AND Pochonia chlamydosporia FOR Meloidogyne javanica CONTROL IN SOYBEAN

2022

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Pochonia chlamydosporia (Pc) is a nematophagous fungus with saprotrophic activity. However, little is known about the interaction between Pc and green manure. This study aimed to investigate the interaction effects of different green manures and Pc on the control of Meloidogyne javanica in soybean. Two greenhouse experiments were conducted in different periods using a 6 × 2 factorial design, with six replicates. The first factor was green manure application (oat, brachiaria, crotalaria, millet, buckwheat, and untreated control) and the second factor was treatment with Pc (in-furrow application and untreated control). Cover crops were grown separately and applied to pots as green manure 15 days before soybean sowing. At 5 days after sowing, soybean was inoculated with 2 000 eggs and juveniles of M. javanica. At 60 days after inoculation, nematode and vegetative variables were determined. All green manures reduced nematode population levels, especially oat, crotalaria, and buckwheat. Pc treatment did not influence nematode population levels. Soybean plants treated with oat or crotalaria green manure had greater height than untreated plants in both experiments. The effects of factors on shoot fresh and dry weights differed between experiments, and green manure application did not affect root development. The findings confirmed the potential of plant residues to control M. javanica.

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Section: Resultsmentioning

confidence: 96%

GREEN MANURE AND Pochonia chlamydosporia FOR Meloidogyne javanica CONTROL IN SOYBEAN

2022

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Action of Trichodermil 1306 in the control of Fusarium oxysporum f. sp. lycopersici in tomato crops

et al. 2020

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Fusarium wilt, caused by Fusarium oxysporum f. sp. lycopersici, is one of the most important diseases of tomato crop in Brazil. Several alternatives to fungicides have been evaluated in search for products that control this disease and have low environmental impact and toxicity to living beings. In this context, the use of Trichoderma spp. is an alternative to agrochemicals, since they are bioregulators and antagonists of several phytopathogens. This work aimed to evaluate the antagonistic and mycoparasitory action of the Trichodermil 1306 biofungicide against F. oxysporum, and its action in the control of fusarium wilt in tomato seeds and seedlings. The biofungicide was used at concentrations of 0, 50, 100, and 150% of the dose recommended for application of 20 L with a backpack sprayer. The experiment was conducted in a completely randomized design with five replications. Data were submitted to analysis of variance and mean compared by Tukey’s test at 5% probability. The 100% Trichodermil concentration was the most efficient for treating tomato seeds. Although this concentration did not show differences in relation to the lowest dose used (50%) in the tomato seed antagonism, mycoparasitism and F. oxysporum incidence tests were recommended because that the lowest concentration resulted in 18% lower root protrusion than that observed with 100% dosage. The in vitro antagonistic and mycoparasitory action of this biological fungicide indicates its potential in the control of fusarium wilt in tomato crops.

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Environmental stimulus in lettuce genotype in agroecological cultivation system

Bester,

Argenta,

Lucchese

et al. 2023

Agron. Sci. Biotechnol.

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Vegetable production system has presented and developed strategies to increase the level of sustainability of production, adding information that expands agroecological production, resulting in better use of different components necessary for production. This study aims to evaluate the effect of different coverages in relation to the expression of the genotype in three crops of different agricultural years, enabling the best use of natural resources, bringing effective subsidies for a more sustainable production. The study was conducted in three growing seasons, in 2017, 2018 and 2019 crop years, in a randomized block design with four replications, using three soil covers (corn silage residue, elephant grass straw and soil without vegetation cover) and a lettuce cultivar (Lettuce “Iceberg”). It was possible to observe through the analysis of variance that only the year variable promoted alterations on the analyzed characters, with no effect of the different coverages. The highest production occurred in 2019 for all variables analyzed. Regarding the estimate of Pearson's linear correlation, it was possible to obtain significance at 0.01% of probability for the variables average total weight and productivity, with a significance of 1% of probability for the variables average diameter, average longitudinal diameter and productivity. There was no effect of soil cover for the variables of lettuce production and productivity, possibly related to excess water from precipitation in 2017, 2018 and 2019. In addition, the complementary effect of irrigation in the years of the experiment was, possibly, superior to the demand of the crop by reducing the effect of ground cover on soil water dynamics.

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Materiais vegetais aplicados ao manejo agroecológico de Meloidogyne incognita em tomateiro

Cited by 3 publications

References 10 publications

GREEN MANURE AND Pochonia chlamydosporia FOR Meloidogyne javanica CONTROL IN SOYBEAN

GREEN MANURE AND Pochonia chlamydosporia FOR Meloidogyne javanica CONTROL IN SOYBEAN

Action of Trichodermil 1306 in the control of Fusarium oxysporum f. sp. lycopersici in tomato crops

Environmental stimulus in lettuce genotype in agroecological cultivation system

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