Fixação do nitrogênio do ar pelas bactérias que vivem em simbiose com as raízes da centrosema

Montojos, J. Casado; Gargantini, H.

doi:10.1590/s0006-87051963000100066

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Because of its nitrogen fixation potential, legumes represent an alternative for supplying nutrients, substituting or complementing mineral fertilization in cropping systems involving green manuring. According to Montojos & Gargantini (1963), this practice, known for centuries, causes changes in soil physical, chemical and biological characteristics, bringing benefits to the subsequent crop (Gallo et al, 1983;Gallo et al, 1986;Pereira et al, 1988;Kanthack et al, 1991 andTanaka et al, 1992) both in small-scale cropping systems and in larger commercial areas such as those grown with sugarcane Ambrosano et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen supply to corn from sunn hemp and velvet bean green manures

Ambrosano¹,

Cantarella²,

Ambrosano

et al. 2009

Sci. agric. (Piracicaba, Braz.)

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Due to their nitrogen fixation potential, legumes represent an alternative for supplying nutrients, substituting or complementing mineral fertilization in cropping systems involving green manuring. The objective of this study was to evaluate the N balance in a soil-plant system involving green manures [sunn hemp (Crotalaria juncea L.) and velvet bean (Mucuna aterrima Piper & Tracy)], both labeled with 15 N. They were incorporated into two soils of contrasting textural classes: a clayey Eutrudox and a sandy-clayey Paleudalf, both cultivated with corn. The research was carried out in a greenhouse, using pots containing 6 kg of air dried soil, to which the equivalent to 13 Mg ha -1 dry matter of above-ground mass plus 2.7 or 2.2 Mg ha -1 of velvet bean and sunn hemp roots were incorporated, respectively, with 15 N labeling of either shoots or roots. One hundred days after emergence of the corn, the velvet bean residues provided higher accumulation of N in the soil, higher absorption by corn plants and accumulation in the shoot. The green manure decomposition was more intense in the medium-textured Paleudalf. The highest nitrogen losses were also observed in this soil.

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Section: Introductionmentioning

confidence: 99%

Nitrogen supply to corn from sunn hemp and velvet bean green manures

Ambrosano¹,

Cantarella²,

Ambrosano

et al. 2009

Sci. agric. (Piracicaba, Braz.)

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“…i as à aplicação de nitrogênio, nos ensaios de adubação de leguminosas. Existem indicações (3,4,5,7) de que é razoável a nodulação natural em soja perene (Glycine wightii Verde), amendoim--de-veado (Teramnus uncinatus Sw.), feijão-de-porco (Canavalia ensiformis D.C.), feijão-baiano (Vigna sinensis (L.) Savi), centrosema (Centrosema pubescens Benth) e amendoim (Arachis hypogaea L.).…”

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Capacidade fixadora de nitrogênio de Rhizobiumautóctone associado com soja perene e siratro, em dois solos do Estado de São Paulo

Lopes¹,

Lovadini²,

Gargantini³

et al. 1971

Bragantia

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Com o objetivo de avaliar a fixação do nitrogênio atmosférico pela população de Rhizobium sp., que ocorre naturalmente nos solos do Estado de São Paulo e que se associa simbiòticamente com as leguminosas soja perene e siratro, foram conduzidos dois ensaios em vasos de Leonard. Os dados mostram que as populações de Rhizobium sp. presentes em Latossolo Roxo e Latossolo Vermelho Amarelo fase arenosa, sob vegetação natural de cerrado, não fixaram nitrogênio em quantidades comparáveis àquelas devidas à inoculação com estirpes puras. Verificou-se, ainda, influência altamente favorável do cultivo da soja perene na população de Rhizobium que se associa com siratro, presente no Latossolo Roxo.

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Fixação do nitrogênio do ar pelas bactérias que vivem em simbiose com as raízes da centrosema

Cited by 2 publications

References 5 publications

Nitrogen supply to corn from sunn hemp and velvet bean green manures

Nitrogen supply to corn from sunn hemp and velvet bean green manures

Capacidade fixadora de nitrogênio de Rhizobiumautóctone associado com soja perene e siratro, em dois solos do Estado de São Paulo

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