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Weeds in Second Corn Crops in the Period of Transgenic Soybean Implantation in the Middle Paranapanema Region Planta Daninha
HIRATA,A.C.S.; DUARTE,A.P.; DUARTE,R.C.R.M..
ABSTRACT: The Middle Paranapanema region concentrates a large part of the second corn production in São Paulo State. Weed surveys in commercial areas are important for monitoring and directing their management. In 2006, 2007, and 2008, weed surveys were carried out on 27, 25, and 24 corn crops, respectively, in ten counties of this region. At the grain filling stage, crops were zigzag sampled with 20 points of 1 m2 per area. In addition, information on weed management, soil cover, and history of the summer crop were collected. The phytosociological parameters frequency, density, abundance, and importance value index were determined. The results evidenced Cenchrus echinathus as the most important species in 2006 and 2007, in addition to high importance...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays L.; Phytosociological survey; Weeds.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100341
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Cauliflower Cultivars Associated with Urochloa decumbens Straw Mulch in Integrated Weed Management Planta Daninha
HIRATA,A.C.S.; HIRATA,E.K.; RÓS,A.B.; NARITA,N..
ABSTRACT: In vegetable farming, the reduction in the use of herbicides has been an important factor in the definition of the production system. The objective of this research was to evaluate crop yield of cauliflower cultivars grown on Urochloa decumbens straw mulch, as well as the effect of the association between straw and cultivars on weed management. The treatments were arranged in a 2 x 4 factorial scheme: two managements (with or without U. decumbens straw mulch) and four cauliflower cultivars (Barcelona, Bromus, Júlia and Lisblanc). The experiment used a randomized block design with four replicates. There was no interference of straw mulch on crop yield of cauliflower cultivars. Hybrids Barcelona and Júlia presented yields of 22.0 and 23.9 t ha-1,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Urochloa decumbens; Brassica oleracea var. botrytis; Straw mulch; Cultural management.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100180
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