Buscar
Mostrando ítems 1-10 de 543
FAAS determination of metal nutrients in fish feed after ultrasound extraction
(Elsevier B.V., 2009-03-15)
This paper proposes a method to determine calcium, magnesium, manganese and zinc in fish feed samples using ultrasound in the analyte extraction process, and subsequent quantification by flame atomic absorption spectrometry ...
Nutrição e produtividade do crambe em razão da adubação de semeadura na safrinha
(2013-05-01)
The interest in crambe (Crambe abyssinica) cultivation in Brazil is on the rise, whereas information on the nutrient requirements for this crop is scarce. The objective of this work was to evaluate the effect of ...
Acumulo de materia seca e de nutrientes em milho cultivado no periodo inverno-primavera.
(Pesquisa Agropecuaria Brasileira, Brasilia, v.33, n.11, p.1835-45, nov.1998., 1998)
Exportação de nutrientes e qualidade de cultivares de rosas em campo e em ambiente protegido
(Associação Brasileira de Horticultura, 2008-12-01)
Foram avaliadas a exportação de nutrientes por cultivares de rosas e as características que refletem qualidade em campo e ambiente protegido. O delineamento experimental foi inteiramente casualizado, sendo os tratamentos ...
Nutrient extraction and exportation by castor bean hybrid lyra
(Sociedade Brasileira de Ciência do Solo, 2012-01-01)
Information about nutrient extraction and exportation by crops, as well as the periods of highest nutrient demand is important for an adequate fertilization management. However, there are no studies on the nutrient uptake ...
Nutrient cycling aspects in stands of Pinus-elliottii engelm var elliottii under differents resining intensities .2. nutrients contents in litter
(Inst Tecnologia Parana, 1994-01-01)
Annual and monthly quantities of nutrients wich returned to the soil through litter fall in Pinus elliottii Engelm. var. elliottii stand were estimated durint a two years period, in Experimental Station of Mogi-Guacu, SP. ...
Productivity and nutrient extraction by Brachiaria brizantha fertigated with treated sewage effluent
(2019-04-01)
The present study was performed to evaluate the responses in productivity and nutrient extraction in dry biomass of Brachiaria brizantha 'Marandu' fertigated with treated sewage effluent (TSE) from 2013 to 2014, in ...
DRY MATTER AND NUTRIENT ACCUMULATION CURVE IN CABBAGE CROP
(Univ Fed Rural Semi-arido-ufersa, 2019-07-01)
Cabbage cultivars currently cultivated present high yield potential and may present differences regarding absorption and use of nutrients. Thus, studies quantifying plant growth and nutrient accumulation are the basis to ...
NUTRIENTS QUANTITIES EXTRACTED BY BERMUDA GRASS IN FUNCTION OF NITROGEN DOSES
(Univ Federal Uberlandia, 2015-09-01)
Nitrogen provides the greatest answers in grass growth. The objective of this work was to evaluate the total extraction of nutrients by the bermudagrass due to nitrogen levels. The experiment was conduced in a grass property, ...