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Composição bioquímica e decomposição da parte aérea e raízes de culturas comerciais e plantas de cobertura de solo
(Universidade Federal de Santa Maria, 2010-02-26)
Crop residues (CR) composed by shoots and roots of plants are the main source of C for the agricultural soils. During the decomposition of these CR in the soil, part of C is evolved as CO2 and nutrients are mineralized, ...
Adubação nitrogenada em videiras jovens e em produção
(Universidade Federal de Santa Maria, 2014-02-27)
In the Campanha Gaúcha from Rio Grande do Sul State (RS), vines has been cultivated under
sandy soils with low organic matter content; therefore they have a low nitrogen (N) supply
capacity and inputs of N fertilizers are ...
Adubação nitrogenada à taxa variada com o N-Sensor nas culturas do milho e trigo
(Universidade Federal de Santa Maria, 2010-03-03)
Most tropical and subtropical soils present insufficient availability of nitrogen (N) to meet the demand of maize and wheat in order to obtain high yields. The N in plants can be evaluated through the use of sensors of ...
Fertilização nitrogenada à dose variada na cultura do milho
(Universidade Federal de Santa Maria, 2014-02-25)
Maize is the main cereal produced in Brazil, being highly responsive to nitrogen fertilization, since the tropical and subtropical soils presents insufficient availability of nitrogen (N) to attend the culture demand in ...
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 ...
Adubação orgânica em condições de irrigação suplementar e seu efeito na produtividade da quinua (Chenopodium quinoa Willd) no planalto da Bolívia
(Universidade Federal de Santa Maria, 2012-08-24)
Quinua (Chenopodium quinoa Willd.) is an Andean grain with high protein content (14%), and it is one of the main crops that generate incomes for Bolivian plateau farmers. The quinua crop grows in conditions of low temperature, ...
Nitrato e amônio na solução do solo em sistemas com uso de plantas de cobertura
(Universidade Federal de Santa Maria, 2019-02-27)
The introduction of cover crops in agricultural production systems has received attention due its ability to improve the multifunctionality of the soil and for many species have the capacity of biological N fixation. After ...
Produção de grãos, matéria seca e acúmulo de nutrientes em culturas submetidas à adubação orgânica e mineral
(Universidade Federal de Santa Maria, 2010-04-29)
In Brazil, one of the main activities on small farms is the creation of small animals. The waste produced in this activity can be used as an alternative fertilizer because it contains a number of chemicals readily available ...
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto
(Universidade Federal de Santa Maria, 2022-01-31)
No-tillage (NT) is widely used in areas of grain crops in tropical and subtropical regions.
However, crops fields under NT with low phytomass addition and without runoff control
practices are highly susceptible to ...