BIOTIC COMPONENTS OF ONE RESEARCH SITE UNDER FOUR SOIL MANAGEMENT SYSTEMS

• Autor(a) principal: Kluthcouski, João
• Data de Publicação: 2007
• Outros Autores: Oliveira, Itamar Pereira de, Fancelli, Antônio Luiz, Dourado Neto, Durval, Santos, Renato Sérgio Mota dos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Tropical (Online)
• Texto Completo: https://revistas.ufg.br/pat/article/view/2838
• topic: Organic matter; soil pathogenic agents; no-till management; Matéria orgânica; pH; patógenos do solo; plantio direto; aração profunda; escarificação; gradagem; aivecagem

Organic matter was studied in a savanna oxisol during two years, in Santa Helena, state of Goiás, Brazil, a traditional no-till management area, in which four soil management systems were developed: no-tillage (PD), deep moldboard plowing (AP), shallow harrow plowing (GA) and deep stirring, using a chiseling plower (EP). The dry matter from weed plants observed in the area produced 2369, 124, 243, 640 kg/ha in PD, AP, GA and EP, about 30 days after soil management, respectively. The organic matter was concentrated in the arable soil layer in areas where no-till management was adopted (PD) and was dispersed in larger depth in areas where deep plowing (AP) was used. Deep stirring (EP) behaved similarly to the no-till management (PD). Lower pH values were verified at arable surface under the no-till management. Larger number of fungi and bacteria, as well as of propagules of Rhizoctonia solani and Fusarium solani, were also observed in the no-tillage areas (PD). KEY-WORDS: Organic matter; soil pathogenic agents; no-till management.