A sustentabilidade na produção de alimentos pode ser implantada de diferentes formas e o início de implantação do sistema de plantio direto agrega várias técnicas que atendem a essa produção.Este trabalho avaliou a porcentagem de plantas daninhas, a produção de massa seca das plantas de cobertura e a compactação sob um sistema de plantio direto. O experimento foi conduzido na faculdade de agronomia, Universidade de Rio Verde – Goiás. Os tratamentos foram girassol (Helianthus annuus), braquiária (Brachiaria Urochloa) e área de pousio. Os resultados foram analisados com o teste de Tukey a 5%. A braquiária teve efeito negativo sobre a população de plantas daninhas, reduzindo sua população. Com a avaliação da planta em seu estádio fenológico aos 50 dias, o girassol produziu maior quantidade de massa seca quando comparado com a braquiária e o tratamento controle. A braquiária é uma espécie com potencial para descompactação do solo.
The no-till system promotes benefits that extend not only the characteristics of soil improvement, interfering in the quality and productivity of the plants, thus improving physical, chemical, and biological attributes of the crop and resulting in profitability to the producer. The present study evaluated the agronomic development of cabbage according to different cover plants. The experiment was performed in the field, in the Vegetable sector of the University of Rio Verde - UniRV, Rio Verde, GO. The cover plants used were millet (Pennisetum americanum (L)), sunflower (Helianthus annuus), brachiaria (Brachiaria decumbens), and crotalaria (Crotalaria juncea). The studied greeneries were cabbage (Brassica oleracea), Astrus plus hybrid. The parameters evaluated to analyze the physiological development were: the plants’ height, number of leaves, and cabbage diameter. The results were submitted to the descriptive statistical method with analysis of means, covariances, and correlations, using the Matlab program. Plant growth data were submitted to the analysis of variance, and when significant, the cover plant factor was compared by Fisher’s test, and the factor days after planting was analyzed by regression. The cabbage showed a higher mean height (cm), leaves, and diameter with the sunflower covering plant. The millet was the best plant to increase the cabbage’s mean productivity.
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