Publications des scientifiques de l'IRD

Carvalho A.M. de, Correia J.R., Blancaneaux Philippe, Freitas L.R. da S., Menezes H.A., Pereira J., Amabile R.F. (1996). Caracterizacao de especies de adubos verdes para o cultivo de milho emlatossolo vermelho-escuro originalmente sob cerrado. In : Pereira R. Carvalo (ed.), Nasser L.C. Bhering (ed.). Biodiversidade e produçao sustentavel de alimentos e fibras nos cerrados = Biodiversity and sustainable production of food and fibers in the tropical savannas. Brasilia : EMBRAPA/CPAC, p. 384-388. Simposio sobre o Cerrado; International Symposium on Tropical Savannas, 8.; 1., Brasilia (BRA), 1996/03/24-29.

Titre du document
Caracterizacao de especies de adubos verdes para o cultivo de milho emlatossolo vermelho-escuro originalmente sob cerrado
Année de publication
1996
Type de document
Colloque
Auteurs
Carvalho A.M. de, Correia J.R., Blancaneaux Philippe, Freitas L.R. da S., Menezes H.A., Pereira J., Amabile R.F.
In
Pereira R. Carvalo (ed.), Nasser L.C. Bhering (ed.), Biodiversidade e produçao sustentavel de alimentos e fibras nos cerrados = Biodiversity and sustainable production of food and fibers in the tropical savannas
Source
Brasilia : EMBRAPA/CPAC, 1996, p. 384-388
Colloque
Simposio sobre o Cerrado; International Symposium on Tropical Savannas, 8.; 1., Brasilia (BRA), 1996/03/24-29
The objective of this study was to evaluate the behaviour of green manure species, their potential as soil conditioners, and consequently their contribution to sustainable corn production. The green manure species (Crotalaria juncea, Crotalaria ochroleuca, Cajanus cajan, Canavalia ensiformis, Mucuna aterrima, Brachiaria ruziziensis) were sown at the end of the rainy season followed by corn, sown at the beginning of the following rainy season, during 1993/94 and 1994/95. The statistics design was random block design with four replications. The green manure species and spontaneous vegetation were cut at the soil surface level during the flowering period and incorporated into the soil before planting the corn. For green manures species dry matter, nodule's number and weight as well as C/N ratio, and for corn grain yield as well as weight of ears were determined. Rate of organic matter decomposition for different species also was measured. The M. aterrima showed the highest value in terms of nodulation (number and weight). The rate of decomposition of B. ruziziensis in "litter bags" was significantly (P > 0.01) higher than that of the other species, during the period of green manure coverage. B. ruziziensis, C. cajan and C. juncea showed C/N values significantly (P > 0.05) higher in comparison to the other plants. During 1993/94, corn yield on the former C. juncea and C. cajan treatments was significantly (P > 0.05) higher than on the M. aterrima as well as the B. ruziziensis and spontaneous vegetation treatment. In 1994/95, corn yields were significantly (P > 0.05) higher after C. cajan and C. ensiformis than after B. ruziziensis and spontaneous vegetation. Therefore, the results show a positive influence of the legumes on corn yield. (Résumé d'auteur)
Plan de classement
Fertilisation [076AGRO05]
Descripteurs
SAVANE ; FERTILISATION DU SOL ; ENGRAIS VERT ; RAPPORT C/N ; RECHERCHE AGRONOMIQUE ; RENDEMENT
Description Géographique
BRESIL
Localisation
Fonds IRD [F B010015946] ; Montpellier (Centre IRD)
Identifiant IRD
fdi:010015946
Contact