PPGEA

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https://ri.ufr.edu.br/handle/123456789/81

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Navegando PPGEA por Autor "007.782.131-00"

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    Sistemas de produção com culturas graníferas e de cobertura em safrinha
    (Universidade Federal de Mato Grosso, 2018-07-13) Carvalho, Ícaro Camargo de; Souza, Edicarlos Damacena de; 719.200.561-49; http://lattes.cnpq.br/6843055362772781; Pacheco, Leandro Pereira; 986.520.871-72; http://lattes.cnpq.br/4926743824358076; Pacheco, Leandro Pereira; 986.520.871-72; http://lattes.cnpq.br/4926743824358076; Souza, Edicarlos Damacena de; 719.200.561-49; http://lattes.cnpq.br/6843055362772781; Cabral, Carlos Eduardo Avelino; 019.717.471-06; http://lattes.cnpq.br/6739111102181898; Kappes, Claudinei; 007.782.131-00; http://lattes.cnpq.br/5986992428903864
    The objective of this work was to evaluate the phytomass production, accumulation and nutrient release and soybean yield in production systems with cover crops in succession to soybean cultivation in dystrophic Oxysol in Rondonópolis - MT. The experiment was conducted during the 2016/17 and 2017/18 harvests at the UFMT, Campus of Rondonópolis, in a randomized complete block design with nine cover cropping systems with four replications. The evaluations were performed immediately before desiccation of management in October of 2016 and 2017, and repeated at 15, 30, 60, 90 and 120 days after desiccation. Crotalaria spectabilis and Urochloa ruziziensis were prominent in the phytomass accumulation. C. spectabilis and U. ruziziensis were prominent in the accumulation of nutrients, with the exception of K, Mg and Cu, in which the sunflower + U. ruziziensis system was highlighted for the first two and maize + C. spectabilis for Cu, in the 2016/17 season. U. ruziziensis was highlighted in the accumulation of macronutrients in the 2017/18 crop. The off season production systems composed of C. spectabilis, maize + C. spectabilis, sunflower + U. ruziziensis, P. glaucum and U. ruziziensis were efficient to increase soybean yield in succession to cover crops in southern of Mato Grosso.
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    Sistemas de produção de soja com culturas anuais e de cobertura em safrinha na contribuição de produção de fitomassa e controle de plantas daninhas
    (Universidade Federal de Mato Grosso, 2017-02-23) São Miguel, Andressa Selestina Dalla Côrt; Souza, Edicarlos Damacena de; 719.200.561-49; http://lattes.cnpq.br/6843055362772781; Pacheco, Leandro Pereira; 986.520.871-72; http://lattes.cnpq.br/4926743824358076; Pacheco, Leandro Pereira; 986.520.871-72; http://lattes.cnpq.br/4926743824358076; Souza, Edicarlos Damacena de; 719.200.561-49; http://lattes.cnpq.br/6843055362772781; Kappes, Claudinei; 007.782.131-00; http://lattes.cnpq.br/5986992428903864; Silva, Tonny José Araújo da; 781.203.064-49; http://lattes.cnpq.br/0651075688988405
    The objective of the present study was to evaluate annual and cover crops sown in the second crop after soybean harvest in the production of phytomass (leaves and stems), suppression of weeds and soybean yield in succession in production systems. The experiment was conducted in the agricultural years of 2013/2014, 2014/2015 and 2015/2016, in the experimental area of the Federal University of Mato Grosso, Campus of Rondonopolis. It was implanted in a dystrophic Oxisol, in a randomized block design with nine systems in the off-season: fallow, annual crops (maize, sunflower and cowpea) and cover crops (Pennisetum glaucum, Crotalaria breviflora, Crotalaria spectabilis, Urochloa ruziziensis, Cajanus Cajan, Stylosanthes sp., Urochloa brizantha), with single treatments and intercropping, in four replications. Were evaluated the phytomass, soil cover rate and yield of annual crops in the second crop, soybean yield in the crops and weeds during the whole year. The systems with maize obtained the highest yields of grains. The systems with P. glaucum and U. ruziziensis showed establishment and growth faster than the other cover crop species, which resulted in higher dry phytomass in this period. C. spectabilis was noted in the accumulation of dry phytomass at 90 days after desiccation in relation to C. breviflora. Regarding weed control, the treatments that most influenced the reduction of weed germination or growth were U. ruziziensis single and the consortium between corn + U. ruziziensis with 100% control in most of the evaluated epochs and species. The D. horizonthalis weed species was the one that obtained the largest population among the evaluated species. P. glaucum and U. ruziziensis single showed more efficient establishment and growth of plants, resulting in higher total biomass and soil cover rate in the agricultural year of 2014. In 2015, maize intercropped with U. ruziziensis and C. spectabilis, sunflower + U. ruziziensis stood out in total phytomass production during flowering and after harvesting maize and sunflower grains. The composition of the phytomass in the systems presents greater proportions of stems in relation to leaves, with highlight to C. spectabilis after senescence. The systems with U. ruziziensis, P. glaucum, C. spectabilis and consortia with maize + U. ruziziensis, sunflower + U. ruziziensis and maize + C. spectabilis are alternatives that help in the integrated management of weeds, by reducing the incidence and increasing the control of the main species that were detected during the conduction of the experiment. In the 2015/16 crop year, all production systems using annual crops and cover crops are efficient to increase soybean yield in succession, especially C. spectabilis.