Title:	Pueraria phaseoloides as a cover crop in agroforestry systems in the humid tropics: growth, nutrition and biological N2 fixation.
Authors:	SILVA JUNIOR, J. P. da LEHMANN, J. LOZADA, N.
Affiliation:	JOSE PEREIRA DA SILVA JUNIOR, CPAA.
Date Issued:	2000
Citation:	In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 12., 1999, Foz do Iguaçu. Nitrogen fixation: from molecules to crop productivity - proceedings. Dordrecht: Kluwer Academic Press, 2000.
Pages:	p. 563.
Description:	Analyse of the biomassa production and nutrition of pueraria as a cover crop grown in three different agroforestry systems (1- cupuacu, pupunha e seringueira; 2- cupuacu, pupunha, castanha-do-Para, urucu; and 3- cupuacu, seringueira, coco, citros) at two levels of fertilisation, and its potential to contribute to the N stocks of the cropping system by biological N2 fixation (NBF), in a Xanthic Farreasol in Manaus-AM (Brasil). With the exception of K, the nutrients stocks in pueraria litterwere more than twice as high as the nutrients applied by fertilisation. consequently, nutrient turnover of pueraria was an important process in the nutrient cycling of the fruit tree production system. The N in pueraria derived from biological N2 fixation estimated by 15N enrichment reached values from 9% to 45% and was higher throughout the wet than the dry season. Thus, 32-158 Kg N ha-1 of the biomass N were derived from atmospheric N2 exceeding the amounts of N added by fertilisation. The larger nutrient uptake and return through litter indicated a rapid nutrient cycling and plant-topsoil interface, thus reducing leaching and keeping nutrients available.
Thesagro:	Bactris Gasipaes Bixa Orellana Citrus Sinensis Cobertura do Solo Coco Cocos Nucifera Conservação do Solo Cultivo Multiplo Cupuaçu Espécie Fixação de Nitrogênio Floresta Tropical Úmida Hevea Laranja Leguminosa Pueraria Phaseoloides Pupunha Seringueira Sistema de Cultivo Theobroma Grandiflorum
NAL Thesaurus:	agroforestry cropping systems legumes multiple cropping soil conservation
Keywords:	Agrofloresta Bertolletia excelsa Castranha do Para Urucu Brasil Amazonas Manaus Tropical rain forest Cover plants
Type of Material:	Resumo em anais e proceedings
Access:	openAccess
Appears in Collections:	Resumo em anais de congresso (CPAA)