Buscar
Itens para a visualização no momento 1501-1510 of 4144
Atributos físicos do solo e a produtividade de soja e milho em áreas sob tráfego controlado de máquinas agrícolas
(Universidade Federal de Santa Maria, 2014-02-27)
The Soil compaction has been induced in the no-tillage (NT), mainly due to machinery traffic conditions in soils with high humidity. This traffic is essential for crop management, impossible to put out of the field. ...
Sistemas de manejo de solo em áreas irrigadas por pivô central
(Universidade Federal de Santa Maria, 2019-08-08)
The management of the irrigation in fields under no-till system was established according to the water potential in the soil as limiting factor to plant growth. However, the physical and chemical of the soil subsurface, ...
Distribuição espacial de plantas na fileira e sua relação com a produtividade da cultura do milho
(Universidade Federal de Santa Maria, 2015-01-12)
Decreased variability in the distribution of plants on line and increased nitrogen fertilization efficiency are important order management for high yields in corn. The objective of this study was to evaluate the quality ...
Dinâmica da matéria orgânica em agroecossistemas submetidos a queima e manejos dos resíduos culturais
(Universidade Federal de Santa Maria, 2004-07-26)
The use of fire as pasture management has been object of intense argue, although it has many effects in soil and environment quality. In the ground, the most expressive effect occurs on the organic matter (OM), by combustion, ...
Variabilidade espacial de atributos do solo e da produtividade da soja e qualidade do solo em sistema de integração lavoura-pecuária
(Universidade Federal de Santa Maria, 2015-02-20)
For the sustainability of integrated crop-livestock systems, the proper management of its components (soil-plant-animal), which are dynamic and interact with each other, are essential to define the system's ability to ...
Recomendações de fertilização fosfatada e potássica para as principais culturas de grãos sob sistema plantio direto no Paraguai
(Universidade Federal de Santa Maria, 2008-03-06)
The recommendations of fertilization have as main purpose to facilitate and aid the decisions about application of fertilizers necessary to obtain yields of maximum economic
efficiency. Pointing out the importance of the ...
Relações entre indicadores de qualidade do solo e a produtividade das culturas em áreas com agricultura de precisão
(Universidade Federal de Santa Maria, 2007-02-16)
The estimative of yield variability is an important tool to soil management decisions and to investigate yield limiting factors. Tools of precision farming as yield mapping and soil sampling using GPS makes possible identify ...
Imagens de satélite para predição espaço-temporal da produtividade de milho e soja em diferentes escalas geográficas
(Universidade Federal de Santa Maria, 2019-09-10)
As global food security issues become increasingly challenging, reliable estimates of crop yields are
becoming more imperative than ever for the scientific community. Today, with greater ease of
accessing remote sensing ...
Formulação e avaliação de um bioherbicida a partir de fermentação submersa do fungo Diaporthe sp.
(Universidade Federal de Santa Maria, 2019-03-15)
The search for new tools that help in the management of weeds can be through
biomolecules in bioherbicides produced by microorganisms, capable of controlling
weeds with low toxicity to the environment. Biomolecules are ...
Respostas fisiológicas e bioquímicas ao estresse de alumínio e fósforo em genótipos de batata (Solanum tuberosum)
(Universidade Federal de Santa Maria, 2014-03-14)
Aluminum (Al) toxicity and phosphorus (P) deficiency often coexist in acid soils that
severely limit crop growth and production, including potato (Solanum tuberosum). Understanding
the physiological mechanisms relating ...