Results 41 to 50 of about 1,794,042 (277)
Revista Brasileira de Zootecnia, 2005 Avaliaram-se as características morfogênicas, fisiológicas e produtivas de espécies de Brachiaria, durante e após período de estresse hídrico. Os tratamentos foram arranjados em um esquema fatorial 4 x 5 quatro espécies de Brachiaria (B.
Jorge Luiz Schirmer de Mattos +2 more
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Cardinal temperatures and modeling of vegetative development in guava [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2019 The aim of this study was to estimate cardinal temperatures (base, optimum, and maximum), and simulate the vegetative development of guava crop through phyllochron (linear) and Wang and Engel (nonlinear) models at the seedling phase.
Mábele de C. Ferreira +3 more
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Revista Brasileira de Zootecnia, 2012 The objective of this experiment was to evaluate the morphogenetic traits and biomass accumulation of Brachiaria brizantha cv. Xaraés subjected to doses of N (0, 125, 250, 375 and 500 kg.ha-1 N).
Welton Batista Cabral +5 more
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, 2017 Soybean ( Glycine max ) production is expanding into cooler and warmer environments. Temperature influence on nodal leaf appearance rate and, especially, nodal primordium formation rate – two critical parameters that determine potential leaf area, light ...
F. A. Tenorio +5 more
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Frontiers in Plant Science, 2019 Fungal leaf diseases cause economically important damage to crop plants. Protective treatments help producers to secure good quality crops. In contrast, curative treatments based on visually detectable symptoms are often riskier and less effective ...
J. Fahrentrapp +3 more
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Improving predictions of leaf appearance in field grown potato [PDF]
Scientia Agricola, 2007 The calculation of leaf appearance rate (LAR) and number of accumulated or emerged leaves (NL) on the main stem are part of many crop simulation models. The purpose of this study was to adapt and evaluate a model (WE model) for simulating the main stem LAR and NL in potato (Solanum tuberosum L.).
Streck, Nereu Augusto +4 more
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Quantification of Tobacco Leaf Appearance Quality Index Based on Computer Vision
IEEE Access, 2022 The appearance quality index of tobacco leaves is widely used in the tobacco industry. But in national standards for flue-cured tobacco, the specified indicators only have qualitative descriptions, and a few have a range of quantitative values, lacking quantitative calculation methods, which affects the effective use of these indicators in tobacco ...
Tiannan Wu +3 more
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CO2Effects on Phasic Development, Leaf Number and Rate of Leaf Appearance in Wheat [PDF]
Annals of Botany, 1997 It has been predicted that the concentration of CO2in the air could double during the 21st century. Though it is recognized that CO2-doubling could increase yield through its effects on plant photosynthesis and stomatal behaviour, it is unclear whether CO2-doubling will change phasic development in wheat.
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Ciência Rural, 2007 O girassol é a quarta oleaginosa em produção de grãos no mundo e alguns genótipos são usados com finalidade ornamental para flor de corte e de vaso (girassol de vaso). O objetivo do trabalho foi avaliar o efeito de diferentes fontes e doses de nitrogênio
Joelma Dutra Fagundes +4 more
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Plant Methods, 2023 Background The time between the appearance of successive leaves, or phyllochron, characterizes the vegetative development of annual plants. Hypothesis testing models, which allow the comparison of phyllochrons between genetic groups and/or environmental ...
Sandra Plancade +5 more
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