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Mostrando ítems 11-20 de 277
Tolerance to partial and complete submergence in the forage legume Melilotus siculus: An evaluation of 15 accessions for petiole hyponastic response and gas-filled spaces, leaf hydrophobicity and gas films, and root phellem
(Oxford University Press, 2019-01)
• Background and Aims: Submergence is a severe stress for most plants. Melilotus siculus is a waterlogging- (i.e. root zone hypoxia) tolerant annual forage legume, but data were lacking for the effects of partial and full ...
Optimal photosynthetic use of light by tropical tree crowns achieved by adjustment of individual leaf angles and nitrogen content
Background and Aims Theory for optimal allocation of foliar nitrogen (ONA) predicts that both nitrogen concentration and photosynthetic capacity will scale linearly with gradients of insolation within plant canopies. ONA ...
Contributions of leaf photosynthetic capacity, leaf angle and self-shading to the maximization of net photosynthesis in Acer saccharum: a modelling assessment
Plants are expected to maximize their net photosynthetic gains and efficiently use available resources, but the fundamental principles governing trade-offs in suites of traits related to resourceuse optimization remain ...
Effect of nozzle angle and air-jet parameters in air-assisted sprayer on biological effect of soybean asian rust chemical protection
(2010-09-01)
Aiming at improving the efficiency control of Phakopsora pachyrhizi, this research evaluated different application techniques, using spray deposits and yield parameters of soybean crop. Two experiments were carried out in ...
Effect of nozzle angle and air-jet parameters in air-assisted sprayer on biological effect of soybean asian rust chemical protection
(2010-09-01)
Aiming at improving the efficiency control of Phakopsora pachyrhizi, this research evaluated different application techniques, using spray deposits and yield parameters of soybean crop. Two experiments were carried out in ...
Ângulo foliar e lâmina de irrigação afetam a qualidade das mudas florestais
(Universidade Estadual Paulista (Unesp), 2017-03-29)
Em muitos viveiros, a experiência pessoal dos viveiristas é o principal método utilizado para determinar quando e quanto tempo irrigar. Os viveiros produzem diversas espécies simultaneamente numa mesma área. Entre as ...
Assessing the role of vertical leaves within the photosynthetic function of Styrax camporum under drought conditions
(Springer, 2012-12-01)
Previous evidence has demonstrated that vertical leaves of Styrax camporum, a woody shrub from the Brazilian savanna, have a higher net photosynthetic rate (P (N)) compared with horizontal leaves, and that it is detected ...
Assessing the role of vertical leaves within the photosynthetic function of Styrax camporum under drought conditions
(Springer, 2012-12-01)
Previous evidence has demonstrated that vertical leaves of Styrax camporum, a woody shrub from the Brazilian savanna, have a higher net photosynthetic rate (P (N)) compared with horizontal leaves, and that it is detected ...
Impact of glyphosate formulations and adjuvants: effects on leaf interaction, metabolism, and control of sourgrass
(Univ Federal Santa Maria, 2022-01-01)
The addition of commercial formulations and adjuvants to a tank mix may result in differences in the wettability on the plant surface, foliar uptake and herbicide efficacy. Thus, the objectives of this study were to evaluate ...