Nutrient Uptake
Mostrando 25-36 de 349 artigos, teses e dissertações.
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25. Plant biostimulants: physiological responses induced by protein hydrolyzed-based products and humic substances in plant metabolism
ABSTRACT In recent years, the use of biostimulants in sustainable agriculture has been growing. Biostimulants can be obtained from different organic materials and include humic substances (HS), complex organic materials, beneficial chemical elements, peptides and amino acids, inorganic salts, seaweed extracts, chitin and chitosan derivatives, antitranspirant
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-02
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26. Plant proton pumps as markers of biostimulant action
ABSTRACT A standard protocol to evaluate the effects of biostimulants on plant physiology is still lacking. The proton pumps present in the vacuolar and plasma membranes are the primary agents responsible for the regulation of the electrochemical gradient that energizes the nutrient uptake system and acid growth mechanism of plant cells. In this study, two o
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-02
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27. Impacts of fertigation via surface and subsurface drip irrigation on growth rate, yield and flower quality of Zinnia elegans
ABSTRACT Drip irrigation combined with split application of fertilizer nitrogen (N) dissolved in the irrigation water (i.e. drip fertigation) is commonly considered best management practice for water and nutrient efficiency. This research was conducted to study the influence of drip fertigation in combination with or without N fertilizers on vegetative growt
Bragantia. Publicado em: 22/12/2015
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28. Determination of optimum levels of nitrogen, phosphorus and potassium of oil palm seedlings in solution culture
Balanced nutrient elements in fertilizer play a critical role in oil palm seedling successful growth and development, and at the same time reduces of fertilizer losses in the environment. This study examines the effect of different levels of N, P2O5 and K2O for oil palm seedlings in solution culture on growth traits, nutrient uptake in plant tissues and biom
Bragantia. Publicado em: 07/07/2015
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29. Silicon improves the emergence and sanity of rice seedlings obtained from seeds infected with Bipolaris oryzae
This study investigated the importance of silicon (Si) in rice grain husk in association with fungicide treatment for preventing Bipolaris oryzae transmission from seed to seedling and the improvement in seedling emergence. Plants from cv. Oochikara and its mutant (lsi1 mutant) defective in active Si uptake were grown in nutrient solution without (-Si) or wi
Trop. plant pathol.. Publicado em: 2013-12
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30. Colonization of Greek olive cultivars' root system by arbuscular mycorrhiza fungus: root morphology, growth, and mineral nutrition of olive plants
Rooted leafy cuttings of three Greek olive (Olea europaea L.) cultivars (Koroneiki, Kothreiki and Chondrolia Chalkidikis) were grown for six months in three soil types, in an experimental greenhouse, in order to investigate: i) if their root system was colonized by arbuscular mycorrhiza fungus (AMF) genus and, ii) if genotypic differences concerning growth a
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-06
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31. GESSO AGRÍCOLA E ADUBAÇÃO NITROGENADA NA CULTURA DO MILHO EM SISTEMA PLANTIO DIRETO
A considerably part of the high nitrogen (N) rates applied in corn is not absorbed due root growth restriction by subsoil acidity. Gypsum is able to improve conditions for root growth and lead to greater N uptake efficiency, increasing corn yield. Thus to evaluate the effect of gypsum and N on top dressing on soil chemical attributes, root growth , mineral n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/11/2012
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32. Manejo da fertirrigação em Physalis cultivado em vaso com areia
With the increased media coverage of the nutraceutical properties of small fruits like strawberries, raspberries and other, consumer interest increases, and consequently its production. A species of the nightshade family that see recently is being cultivated Physalis L.. Its cultivation is simple, and managed according to the tomato crop. Several authors hav
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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33. Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants
The growth and nutrient assimilation was evaluated in CaCl2- and CaSO4-supplemented cowpea plants subjected to salt stress (75 mM NaCl). The salinity significantly reduced the cowpea vegetative growth. The addition of CaCl2 in the growth medium did not significantly affect plant growth, while for the CaSO4, the beneficial effects of Ca2+ were moderate. Salin
Braz. J. Plant Physiol.. Publicado em: 2012
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34. Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass
We investigated the effectiveness of Nitroxin inoculation on lead (Pb) and nutrient uptakes by little seed canary grass. The factors tested included inoculation (or not) with Nitroxin and different soil concentrations of Pb (0, 200, 400 and 800mgPbkg-1 soil). Increasing soil concentrations of Pb decreased stem, leaf and root dry weights. Shoot phosphorus con
Braz. J. Bot.. Publicado em: 2012
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35. Influência da adubação nitrogenada e avaliação do estado de nitrogênio do arroz irrigado / Influence of nitrogen fertilization and assessment of nitrogen on irrigated rice fields
Experiments were carried out at the Experimental Station of the Federal University of Viçosa, Viçosa City, Minas Gerais State, Brazil, in 2008/09 crop, in order to investigate four tropical irrigated rice cultivars, subjected to six nitrogen doses for nitrogen use efficiency, nutrient uptake, grains productivity, and benefited grains produtivity. In additi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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36. Correção do solo e sistemas de rotação de culturas sobre a absorção de nutrientes e produção de soja / Soil correction and crop rotation systems on nutrient uptake and yield of soybean
A rotação de culturas, aliada à elevação de palhada sobre o solo, estão entre os principais requisitos para a implantação e manutenção do sistema plantio direto no Cerrado. O uso da integração lavoura-pecuária, aliada à introdução das braquiárias em áreas agrícolas, tem auxiliado a manutenção dessa cobertura e o aumento da quantidade de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011