Results 91 to 100 of about 5,434 (215)

Características morfogênicas e estruturais de gramíneas com potencial de uso em Sistemas de Integração - Lavoura - Pecuária - Floresta em Rondônia. [PDF]

open access: yes, 2011
Este trabalho apresenta as principais características morfogênicas e estruturais de gramíneas com potencial de uso em sistemas de integração Lavoura-Pecuária-Floresta (iLPF?s).
CASSARO, J. D.   +5 more
core  

Crop-livestock integration and the physical resilience of a degraded Latosol

open access: yesSemina: Ciências Agrárias, 2019
The degradation of pastures in Brazil is a problem of agronomic and environmental importance because it impairs the productive capacity of the soil and the hydrological cycle.
José Fausto Guimarães Silva   +6 more
doaj   +1 more source

Contribution of corn intercropped with Brachiaria species to nutrient cycling

open access: yesPesquisa Agropecuária Tropical, 2019
The corn biomass and nutrient dynamics may be altered when it is intercropped with Brachiaria (syn. Urochloa spp.). The present study aimed to investigate the dynamics of biomass, nitrogen (N), phosphorus (P) and potassium (K) for farming systems that ...
Silas Maciel de Oliveira   +5 more
doaj   +1 more source

Direct seeding mulch-based cropping systems - A holistic research approach implemented in Northern Laos [PDF]

open access: yes, 2005
Farming systems throughout the Lao PDR have changed drastically over the last 15 years due to a range of factors. In some areas where market forces are prevalent, shifting cultivation systems have given way to more conventional high-input agricultural ...
Bouahom, Bounthong   +7 more
core  

Intra-inflorescence pollen viability in accessions of Brachiaria ruziziensis

open access: yesActa Scientiarum: Biological Sciences, 2014
Knowledge about the pollen viability is important to ensure success in controlled hybridizations and, consequently, support breeding programs. The aims of this study were to evaluate the pollen viability in progenies of artificially induced tetraploid accessions of Brachiaria ruziziensis, and to verify if the position of the flower buds on the raceme ...
Paula, Cristina Maria Pinto de   +3 more
openaire   +2 more sources

Plantas de cobertura no controle de plantas daninhas na cultura do tomate em plantio direto Cover crops used to control weeds under the no-tillage tomato production system

open access: yesPlanta Daninha, 2009
O plantio direto do tomateiro é um sistema que busca maior sustentabilidade, porém são escassas as informações sobre o manejo de plantas daninhas nessa nova modalidade de cultivo.
A.C. Silva Hirata   +4 more
doaj   +1 more source

Decomposição de resíduos vegetais e nitrogênio mineral em solo no Cerrado. [PDF]

open access: yes, 2015
como o nitrogênio, para plantas subseqüentes por meio da decomposição e mineralização realizada por microrganismos do solo. Alguns fatores como acidez do solo, umidade, temperatura e razão C/N das plantas afetam a decomposição dos resíduos vegetais.
CARVALHO, A. M. de   +8 more
core  

Brachiaria ruziziensis and herbicide on the yield of upland rice Brachiaria ruziziensis e herbicida na produtividade do arroz de terras altas

open access: yesPlanta Daninha, 2012
The correct management of cover crops in no-tillage aims to obtain greater benefits with its introduction in agricultural systems. The use of forage species such as Brachiaria, due to the large amount of biomass and for persisting longer on the ground, has become a good option.
A.S. Nascente   +3 more
openaire   +1 more source

Nuclear DNA content and chromosome number in Brachiaria spp. genotypes

open access: yesRevista Ciência Agronômica, 2014
Breeding programs for Brachiaria spp. use both intraspecies and interspecies crosses between sexual and apomictic plants in order to obtain new cultivars with the desired characteristics.
Ana Luiza de Oliveira Timbó   +3 more
doaj  

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