CE: 11815 CF: cag062162075
SCIENTIFIC ARTICLE
Green manure and its influence on bean (Phaseolus vulgaris L.) in agroecological system
Abonos verdes y su influencia en el frijol (Phaseolus vulgaris L.) en sistema agroecológico
Marisol Rivero Herrada1, Ramiro Remigio Gaibor Fernández1, Juan José Reyes Pérez2, Wilson Mozena Leandro3, Enderson Petrônio de Brito Ferreira4
1 Universidad Técnica Estatal de Quevedo, Campus Ing. Manuel Haz Álvarez, km 1,5 vía a Santo Domingo de los Tsáchilas, Quevedo, Ecuador. CP 120554.
2 Universidad Técnica de Cotopaxi, Extensión La Maná. Av. Los Almendros y Pujilí, Sector La Virgen. Edificio Universitario, La Maná, Ecuador. CP 050202.
3 Universidad Federal de Goiás. Rodovía Goiana. Nova Veneza, Km zero- Caixa Postal 131. Campus Samambia, Brasil. CP 74001.
4 Empresa Brasileira de Pesquiza Agropecuaria, Santo Antonio de Goias, Brasil. CP 75375.
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ABSTRACT
Green manures have been used as biomass producers and suppliers of nutrients and keep the soil productive potential in tropical regions. The objective of this study was to evaluate the production of dry biomass and nutrient concentration and accumulation in plants of green manure in two cropping systems, without associating and associated with millet and its influence on the nutritional status of the bean (Phaseolus vulgaris L.) in succession in agroecological production. Four legumes (Canavalia ensiformis Adans; Cajanus cajan (L.) Millsp.; Crotalaria juncea L.; Mucuna pruriens (L.) DC) and one grass (Pennisetum glaucum L.) as association plant, were evaluated. A randomized block design was used, with eight treatments and four repetitions. The green manure plants were cut and left on the ground at 60 days after planting and bean was planted 20 days after cutting the manure plants. The evaluated variables were dried biomass production, nutrient content of green manure and nutrient content in leaves of beans in succession. The production of dry biomass of green manure was higher than 9.00 t ha-1. Mucuna stood out with the greatest tenors of N, Ca, Mg, pork beans with the highest tenors of K, Cu, Mn. The greatest accumulation of P, K and Ca nutrients was in pigeon pea. The highest values of N and Mg were obtained in mucuna. Higher C / N relation was obtained in crotalaria.
