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Mostrando ítems 11-20 de 25
Fertilizantes de eficiência aprimorada: perspectivas e potencial de uso de biopolímeros como matrizes de liberação lenta ou controlada
(Universidade Federal de São Carlos, 2020-12-18)
Conventional mineral fertilizers consist of products applied in the field, which aim to provide higher yields for agricultural crops. However, the excessive use of these fertilizers in the soil causes environmental, economic, ...
Tolerância de porta enxertos cítricos ao alumínio em solução
(Universidade Federal de São Carlos, 2013-07)
One of the main causes of losses in agricultural productivity is due to the high concentrations of aluminum (Al) in the soil solution, characteristic of acidic weathered soils in the humid tropical zone. Al affects the ...
Emissão de gases de efeito estufa da mudança de uso do solo e potencial de sequestro de C-CO2 pela recuperação de pastagens degradadas para o estado do Pará, 2008 a 2019
(Universidade Federal de São Carlos, 2021-06-25)
Brazil actively contributes to the intensification of the global greenhouse effect, with deforestation being responsible for a large part of the country's atmospheric carbon emissions. It is necessary to conserve the Amazon ...
Nutrição mineral nas fases de semeadura e de individualização de “seedlings” do melhoramento genético de cana-de-açúcar
(Universidade Federal de São Carlos, 2012-07-02)
The concern and interest in ensuring the adequate nutritional supply for plant cane and ratoon cane, and even for propagation seedlings, has been quite evident. However, there is little information on the supply of nutrients ...
Cultivo consorciado de milho de segunda safra com espécies de adubo verde visando à diminuição da adubação nitrogenada de cobertura
(Universidade Federal de São Carlos, 2018-07-05)
Winter corn (second crop corn) has become the main autumn-winter crop in Brazil. In the 2016/2017 crop, the average productivity was 5,303 kg ha-1, surpassing that of the summer corn (first crop corn). With the expectations ...
Efeito de fontes e doses de manganês no desenvolvimento do cultivar TAA Bola Cheia de feijoeiro comum (Phaseolus vulgaris L.)
(Universidade Federal de São Carlos, 2016-06)
One of the main factors for increasing the productivity of common bean (Phaseolus vulgaris L.) is the correct use of fertilizers. However, this important factor of agricultural production has still been neglected by rural ...
Inibidor de urease (NBPT) e a eficiência da ureia aplicada em dose única ou parcelada na cultura do sorgo sacarino
(Universidade Federal de São Carlos, 2018-07-02)
Sweet sorghum has been considered an agricultural crop with great potential for the production of bioenergy, recommended for cultivation in sugarcane reform areas to supply raw material for the production of ethanol in the ...
Sensibilidade de variedades de milho (Zea mays) ao alumínio em solução
(Universidade Federal de São Carlos, 2011-07-04)
The influence of Al toxicity on the development of the root system and on the interference of nutrient absorption, typical of acidic soils, has been presented as one of the main causes of the low productivity of many crops ...
Eficiência da adubação de cobertura com ureia revestida por polímeros na cultura do milho
(Universidade Federal de São Carlos, 2015-12-03)
One of the most important aspects maize cultivation is the management of fertilization, in order to achieve maximum efficiency in the use of nutrients offered with fertilizers. Nitrogen (N) is the most required nutrient ...
Adubação com cama de galinha poedeira peletizada no desenvolvimento inicial da cultura do milho
(Universidade Federal de São Carlos, 2014-07)
The amount of commercial laying hens in Brazil is estimated at 90 million, with an average production of 2.20 kg of poultry litter per bird. Therefore, it is necessary to seek appropriate management practices for the final ...