Efeitos da introduçao do sistema de plantio direto de milho por agricultores familiares do municipio de Unai, Mg (Cerrado brasileiro)

De Oliveira Marcelo Nascimento, Valadares Xavier Jose Humberto, Macena Da Silva Fernando-Antonio, Scopel Eric, Fernandes Zoby Jose Luis. 2009. Efeitos da introduçao do sistema de plantio direto de milho por agricultores familiares do municipio de Unai, Mg (Cerrado brasileiro). Pesquisa Agropecuária Tropical, 39 (1) : 51-60.

http://www.revistas.ufg.br/index.php/pat/article/view/3953/4513

Article de revue ; Article de revue sans comité de lecture Revue en libre accès total

Prévisualisation

Version publiée - Portugais
Utilisation soumise à autorisation de l'auteur ou du Cirad.
document_549949.pdf
Télécharger (158kB) | Prévisualisation

Résumé : This paper evaluates the effects of the introduction of no-tillage systems (SPD) in rainfed maize grain production, by smallholders, under Cerrado conditions, in the region of Unaí, Minas Gerais State, Brazil. The main constraints faced by farmers to produce are related to soil fertility management, difficulties in assessing tractors for preparing their land, and high levels of weed infestation. SPD was tested jointly with farmers trying to decrease these problems impacts. It showed promising results to stabilize, technically and economically, maize production. SPD solved completely the tractors dependency and contributed to decrease labour requirements for weed control. The production levels attained led to a better valorisation of the most scarce production factors, such as family labour and land. It was also evidenced the need to conduct more studies on the use of cover crops in those production systems.

Mots-clés Agrovoc : Zea mays, petite exploitation agricole, semis direct

Mots-clés géographiques Agrovoc : Minas Gerais

Classification Agris : F07 - Façons culturales
P35 - Fertilité du sol
E80 - Économie familiale et artisanale

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations