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Disponibilidade do nitrogênio em solos de várzea e parâmetros da planta para avaliação nutricional da cultura do arroz irrigado
(Universidade Federal de Santa Maria, 2012-08-31)
The present work aims at assessing the nitrogen mineralization in aerobic and
anaerobic conditions in an incubation experiment and monitoring the N level in plants by the
use of chlorophyll meter in order to establish a ...
Caracterização e modelagem dos processos erosivos com interface canal-encosta em bacias de elevado gradiente topográfico: o caso da bacia experimental do rio Guarda Mor
(Universidade Federal de Santa Maria, 2022-10-27)
Water erosion is closely related to environmental preservation, sanitary quality and general infrastructure problems. The phenomenon of sediment transport in channels is extremely complex because it is a non-punctual ...
Espectroscopia Vis-NIR-SWIR combinada com machine learning para predição de cobre e zinco em solos de vinhedos no sul do Brasil
(Universidade Federal de Santa Maria, 2022-12-30)
Careful and sustainable management of vineyard soils is fundamental to the success of
vineyards. These areas have been faced with high levels of available copper (Cu) and zinc (Zn)
in the soil, as a result of the frequent ...
Espaço poroso avaliado por tomografia e propriedades hídricas e mecânicas em solos argilosos sob culturas anuais e campo natural
(Universidade Federal de Santa Maria, 2020-07-16)
The growing demand for food and energy causes an intensification in agriculture, which uses
larger machines and results in high pressures applied to the soil. As the pressures increases there
are changes in the soil ...
Qualidade e quantidade de resíduos culturais modulam a estabilização de carbono e nitrogênio no solo
(Universidade Federal de Santa Maria, 2023-03-31)
Crop residues left on the soil surface play an important role in controlling erosion,
nutrient cycling and soil organic matter (SOM) formation. The diversification of
cropping systems is a strategy that allows the input ...
Funções das áreas hidrologicamente frágeis na formação e modelagem do escoamento superficial na bacia experimental do Arroio Lajeado Ferreira, Arvorezinha - RS
(Universidade Federal de Santa Maria, 2022-10-31)
Physically based and distributed erosion models like the Limburg Soil Erosion Model (LISEM) are complex and
require high-quality information, equations aligned with the processes, and accurate spatial representation ...
Dinâmica do carbono influenciada pela qualidade de resíduos culturais, teor inicial de carbono e textura em dois solos subtropicais
(Universidade Federal de Santa Maria, 2020-02-28)
Crop residues quality and initial soil carbon (C) content influence the residue-derived C
dynamic in agricultural soils. However, there is a limited understanding about the fate of residue
C and the net C balance in the ...
Melhoria dos atributos químicos da camada de enraizamento e seu efeito sobre a produtividade das culturas em sistema plantio direto
(Universidade Federal de Santa Maria, 2017-06-28)
The adoption of no-tillage system led to several physical, chemical and biological improvements in the soil. However, these improvements have been restricted to the superficial layers of the soil, limiting the root development ...
Structural architecture and functioning of an alfisol after 17 years of organic fertilization in no-till cropping
(Universidade Federal de Santa Maria, 2023-06-05)
Using animal manure as fertilizer is an alternative adopted in Brazilian agricultural farms,
especially where there is integrated production of animals and crops. Nevertheless, the longterm impacts of continuous application ...
Emissões de óxido nitroso e fornecimento de nitrogênio ao milho e trigo com doses de dejetos líquidos de suínos injetados no solo com e sem dicianodiamida
(Universidade Federal de Santa Maria, 2023-09-01)
Pig slurry (PS) has a high proportion of nitrogen (N) in ammoniacal form, whose losses by ammonia (NH3) volatilization can be high when PS is broadcast, as it is done in no-till crops. The shallow injection of PS significantly ...