interferências mútuas entre a cultura do milho, espécies forrageiras e plantas daninhas em um sistema de consórcio: ii - implicações sobre as espécies forrageiras mutual interferences among corn crop, forage species and weeds under a consortium system: ii - implications on forage species

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ID: 171131
2006
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Abstract
Esta pesquisa foi desenvolvida com o objetivo de avaliar as conseqüências da utilização de um sistema de consórcio sobre o crescimento e a conseqüente produção final de massa fresca das plantas forrageiras intercaladas à cultura do milho. Os tratamentos resultaram da combinação entre três níveis do fator espécies forrageiras (Brachiaria decumbens, Brachiaria brizantha e Panicum maximum) e três níveis do fator plantas daninhas (Ipomoea grandifolia corda-de-viola, Amaranthus hybridus caruru-roxo e Digitaria horizontalis capim-colchão). Acrescentou-se, também, uma testemunha absoluta, ou seja, as espécies forrageiras crescendo sem a cultura do milho e sem plantas daninhas. Durante a condução do experimento, avaliou-se a área foliar (cm² por planta), a massa seca (g por planta) e o acúmulo total final de massa fresca (t ha-1) das espécies forrageiras quando submetidas aos diferentes tratamentos. De forma geral, B. decumbens foi a forrageira menos eficiente quanto à habilidade de competição interespecífica, P. maximum foi a espécie que mais produziu massa fresca, enquanto B. brizantha foi a mais competitiva com as plantas daninhas, podendo-se inferir que estas foram as espécies menos prejudicadas pelo sistema adotado. Como conclusão geral, a pesquisa demonstrou a viabilidade da utilização do sistema de consórcio.
This work aimed to evaluate the consequences of adopting a living mulch system on the growth and final fresh weight yield of forage grasses intercropped with corn crop. The treatments resulted from a combination of three levels of the factor forage species (Brachiaria decumbens, Brachiaria brizantha and Panicum maximum) and three levels of the factor weeds (Ipomoea grandifolia, Amaranthus hybridus and Digitaria horizontalis). An absolute check was also included (forage species growing without corn crop and without weeds). During the experiment, leaf area (cm² per plant), dry weight (g per plant) and final total fresh weight yield (t ha-1) of the forage species were evaluated, when submitted to the different treatments. It was observed that B. decumbens was the least efficient forage species in relation to inter-specific competition; P. maximum was the species that produced the most fresh weight, while B. brizantha was the most competitive against the weeds. It could be inferred that P. maximum and B. brizantha were the species least damaged by the system adopted. It can be concluded that this work has demonstrated the viability of adopting this living mulching system.
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severino2006plantainterferncias Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;F.J. Severino;S.J.P. Carvalho;P.J. Christoffoleti
Journal anti-cancer agents in medicinal chemistry
Year 2006
DOI
10.1590/S0100-83582006000100006
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582006000100006
Keywords
competition management systems growthbiology (general)botany living mulch system

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