Phosphorus Acquisition
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Phosphorus acquisition by wheat from organic and inorganic sources labelled with 32P and 33P radioisotopes
ABSTRACT: Investment in soil phosphorus (P) capital in the tropics is often constrained by poor availability of mineral fertiliser to small-scale farmers. Consequently, new sustainable agricultural cropping strategies are required to maintain fertility and maximise crop yields. The co-application of Tithonia diversifolia (Tithonia) green manure and mineral f
Sci. agric. (Piracicaba, Braz.). Publicado em: 05/09/2019
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2. Contents of macronutrients and growth of ‘BRS Marataoã’ cowpea fertigated with yellow water and cassava wastewater
Resumo O uso agrícola de águas amarelas associadas à manipueira é uma técnica sustentável, uma vez que possibilita a redução de custos com a aquisição de fertilizantes industrializados e minimiza a poluição ambiental ocasionada pela destinação final inadequada desses efluentes. Neste contexto, objetivou-se com este trabalho avaliar os teores de
Rev. Ambient. Água. Publicado em: 20/05/2019
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3. Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)
ABSTRACT Previous ecological studies of dioecious plant species have found that female plants preferentially occur at lower altitudes where there are typically better nutritional conditions, while male plants often occur in less favorable sites. We compared the ecophysiological performance of male and female plants in three populations of the dioecious Bacch
Acta Bot. Bras.. Publicado em: 2017-06
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4. Triple inoculation with Bradyrhizobium, Glomus and Paenibacillus on cowpea (Vigna unguiculata [L.] walp.) development
The use of microorganisms to improve the availability of nutrients to plants is of great importance to agriculture. This study aimed to evaluate the effect of triple inoculation of cowpea with arbuscular mycorrhizal fungi (AMF), plant growth-promoting bacteria (PGPB) and rhizobia to maximize biological nitrogen fixation (BNF) and promote plant growth. The ex
Brazilian Journal of Microbiology. Publicado em: 2011-09
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5. Phosphorus acquisition and internal utilization efficiency in tropical maize genotypes.
The objective of this work was to determine the relative importance of phosphorus acquisition efficiency (PAE ? plant P uptake per soil available P), and phosphorus internal utilization efficiency (PUTIL ? grain yield per P uptake) in the P use efficiency (PUE ? grain yield per soil available P), on 28 tropical maize genotypes evaluated at three low P and tw
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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6. Avaliação e caracterização de variedades locais de milho para eficiência na absorção e na utilização de fósforo.
RESUMO: Experimentos de campo e sob condições controladas foram conduzidos para estudar a eficiência em fósforo (P) de variedades locais de milho. Em casa de vegetação, dezoito genótipos foram cultivados em solo, sob duas doses de P, com o objetivo de verificar diferenças quanto à produção de matéria seca e utilização de P. Detectou-se variabil
Planaltina. Publicado em: 2011
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7. Estimative of gene effects for traits related to phosphorus efficiency and responsiveness in tropical maize / Estimativas de efeitos gênicos de diversos caracteres relacionados à eficiência e resposta ao fósforo em milho tropical
Low information is available concerning the inheritance of phosphorus (P) efficiency and responsiveness in tropical maize, obtained from trials conducted until maturity in tropical environments. This information is the basis to establish selection strategies for these characteristics. The objective of this study was to investigate the inheritance and relatio
Publicado em: 2008
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8. Caracterização morfofisiológica radicular relacionada aos mecanismos de aquisição de fósforo em sorgo / Characterization of morphophysiological root traits related to mechanisms of phosphorus acquisition in sorghum
A baixa disponibilidade de fósforo no solo é um dos principais fatores que restringem o desenvolvimento e a produção das plantas. Para a adaptação a estes ambientes as plantas desenvolveram mecanismos que variam entre espécies e entre genótipos. A capacidade das plantas em explorar o solo, converter formas não utilizáveis em absorvíveis, formar as
Publicado em: 2008
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9. Diversidade de caracteres radiculares em feijoeiro em dois estádios de crescimento. / Diversity of root traits in common bean in two growth stages.
Studies indicate that the genotypes of common bean (Phaseolus vulgaris L.) with high growth in low soil P availability were those with high root mass. Hence, high root development might be a strategy for increase the yield of beans cropping in tropical soils. However, bean growth stage has significant effects on root morphology, which may compromise the use
Publicado em: 2007
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10. Desenvolvimento do sistema radicular e da parte aérea do feijoeiro comum em função da distribuição e do teor de fósforo no solo. / Effect of phosforus level, and its position in the soil, on the commom bean shoot and root system development.
The root system is essential to water and nutrient acquisition, hormone synthesis and carbohydrate storage. Although the knowledge about its importance, there are much less studies with this organ, than with the shoots. Probably, due to the difficulties in its study, since it develops in the soil, making directs observations harder. The stabeleshiment of che
Publicado em: 2004
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11. Molecular analysis of nuc-1+, a gene controlling phosphorus acquisition in Neurospora crassa.
In response to phosphorus starvation, Neurospora crassa makes several enzymes that are undetectable or barely detectable in phosphate-sufficient cultures. The nuc-1+ gene, whose product regulates the synthesis of these enzymes, was cloned and sequenced. The nuc-1+ gene encodes a protein of 824 amino acids with a predicted molecular weight of 87,429. The amin
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12. Induction of a Major Leaf Acid Phosphatase Does Not Confer Adaptation to Low Phosphorus Availability in Common Bean1
Acid phosphatase is believed to be important for phosphorus scavenging and remobilization in plants, but its role in plant adaptation to low phosphorus availability has not been critically evaluated. To address this issue, we compared acid phosphatase activity (APA) in leaves of common bean (Phaseolus vulgaris) in a phosphorus-inefficient genotype (DOR3
American Society of Plant Physiologists.