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Seasonal changes in levels of chlorophyll, nitrate and total soluble carbohydrates of brachiaria decumbens in a long-term silvopastoral system. Our objective was to quantify the levels of chlorophyll (Chl), nitrate and total soluble carbohydrates in leaf blades of Brachiaria decumbens grown in the understory of a silvopastoral system (SPS) un... ... Repository: BDPA Publication year: 2021
Portable chlorophyll meter can estimate the nitrogen sufficiency index and levels of topdressing nitrogen in common bean. The nitrogen sufficiency index (NSI) obtained by using a portable chlorophyll meter is a practical alternative to evaluate the N levels in plants. This study aimed at determining the appropriate NSI v... ... Repository: BDPA Publication year: 2017
Influence of nutrient levels, travel time and light availability on phytoplankton chlorophyll-a concentrations in a neotropical river basin. Abstract: Aim: Knowledge of the factors influencing the biomass of phytoplankton in rivers is important with reference to the characterization of water quality and predicting the effects of environmen... ... Repository: BDPA Publication year: 2022
Chlorophyll a fluorescence in young Bertholletia excelsa BONPL. plants subjected to different shading levels. Photochemical responses are directly dependent on the level of incident solar radiation during the initial establishment of forest species. The aim of the current study was to evaluate chlorophyll a f... ... Repository: BDPA Publication year: 2019
Different levels of water deficit induces changes in growth pattern but not in chlorophyll fluorescence and water relations of Hancornia speciosa Gomes seedlings. Hancornia speciosa Gomes é uma espécie conhecida popularmente no Brasil como mangabeira, cujo fruto apresenta alto valor nutricional. O conhecimento sobre a sua fisiologia é ainda escasso, principalme... ... Repository: BDPA Publication year: 2016
Leaf chlorophyll index of Brachiaria brizantha cv. Piatã and Panicum maximum cv. Mombaça under different doses of nitrogen and potassium. Repository: BDPA Publication year: 2014
Índices nutricionais de N e produtividade de milho em diferentes níveis de manejo e de adubação nitrogenada. O objetivo deste trabalho foi avaliar a relação entre índices nutricionais de N e a produtividade de grãos de milho, em dois níveis de manejo, sob diferentes doses de adubação nitrogenada. Avaliaram-s... ... Repository: BDPA Publication year: 2011
Gas exchange and organic solutes in forage sorghum genotypes grown under different salinity levels. Adaptation of plants to saline environments depends on the activation of mechanisms that minimize the effects of excess ions on vital processes, such as photosynthesis. The objective of this study was... ... Repository: BDPA Publication year: 2018
Physiological aspects in cotton cultivars in response to application leaf gibberellic acid. The cotton plant is a species of the Malvaceae family and is relevant to the Brazilian and world economy, mainly because of the textile fiber. However, there was an increase in cotton production becau... ... Repository: BDPA Publication year: 2017
Gas exchange in massai grass under five nitrogen fertilization levels during establishment and regrowth. The objective of this study was to evaluate gas exchange in the massai grass during establishment and regrowth cycles in a greenhouse, using five nitrogen (N) fertilization levels. A completely random... ... Repository: BDPA Publication year: 2011

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