forms of soil tillage and weed control in agronomic factors and production of cassava
formas de preparo de solo e controle de plantas daninhas nos fatores agronômicos e de produção da mandioca

Clicks: 293
ID: 140532
2012
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Abstract
The study was conducted to evaluate ways of soil tillage and weed control on the production of cassava. Prior to planting the experiment, an area was left fallow, with a predominance of Brachiaria brizantha, and another area cultivated oat in the conventional tillage system. At the end of the cycle of oats the area was used for the experiment with cassava (cv IAC15). The experimental design was a randomized complete block with three treatments and six repetitions. The treatments corresponding to the types of tillage systems and crop driving were: T1-conventional tillage in the fallow and weed control (CT), T2 – No-till on the oat stubble without control of invasive plants (NTwwc) and T3 – No-till oat straw on the control of invasive plants (NTwc). For the treatment corresponding to conventional tillage (CT) of the experimental plots were prepared with a plow and a harrow leveling. The tillage was performed using mechanized planter. The harvest was performed 14 months after planting. The highest values for plant height and fresh weight of shoots were observed in treatments corresponding to the no-tillage system (NTwc and NTwwc). The greatest number of roots ha-1 was observed in NTwwc treatment differing only from the CT. No significant differences were observed for the fresh mass production of roots among the treatments. The highest value from starch content of roots obtained was in the NTwc treatment.

O trabalho foi conduzido com o objetivo de avaliar formas de preparo de solo e o controle de plantas daninhas sobre a produção da mandioca. Anteriormente ao plantio do experimento, deixou-se uma área em pousio, com predominância de Brachiaria brizantha, e em outra área, cultivou-se aveia preta em sistema convencional de preparo de solo. Ao final do ciclo da aveia a área foi utilizada para instalação do experimento com a cultura da mandioca (cv IAC15). O delineamento experimental foi o de blocos casualizados com três tratamentos e seis repetições. Os tratamentos testados correspondentes aos tipos de preparo do solo e sistemas de condução da lavoura foram os seguintes: T1- preparo convencional do solo na área em pousio e com controle de plantas daninhas (PC), T2 – Plantio direto sobre a palhada de aveia sem controle das plantas invasoras (PDsc) e T3 – Plantio direto sobre a palhada de aveia com controle das plantas invasoras (PDcc). Para o tratamento correspondente ao preparo convencional (PC) as parcelas experimentais foram preparadas com uma aração e uma gradagem niveladora. O plantio direto foi realizado utilizando plantadora mecanizada. A colheita foi realizada 14 meses após o plantio. Os maiores valores para altura de plantas e massa fresca da parte aérea foram observados nos tratamentos correspondentes ao sistema de plantio direto na palha (PD-sc e PD-cc). O maior número de raízes ha-1 foi obtido no tratamento PD-sc que diferiu somente do PC. Não foram observadas diferenças significativas para a produção de massa fresca de raízes entre os tratamentos testados. Quanto ao teor de amido das raízes o maior valor foi obtido no tratamento PD-cc.

Reference Key
otsubo2012semina:forms Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Auro Akio Otsubo;Osmar Rodrigues Brito;Daniel Pires Passos;Humberto Sampaio Araujo;Fábio Martins Mercante;Victor Hugo Nakase Otsubo
Journal frontiers in neuroendocrinology
Year 2012
DOI
DOI not found
URL
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/9603
Keywords
Agriculture (General) manihot esculenta

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