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Infrared thermometry to schedule irrigation of common bean PAB
Lobo,Francisco de Almeida; Oliva,Marco Antonio; Resende,Morethson; Lopes,Nei Fernandes; Maestri,Moacyr.
The objective of this work was to determine the critical irrigation time for common bean (Phaseolus vulgaris L. cv. Carioca) using infrared thermometry. Five treatments were analyzed. Canopy temperature differences between plants and a well-watered control about 1, 2, 3, 4, and 5±0.5ºC were tested. Physiological variables and plant growth were analyzed to establish the best time to irrigate. There was a significant linear correlation between the index and stomatal resistance, transpiration rate, and leaf water potential. Although significant linear correlation between the index and mean values of total dry matter, absolute growth rate, and leaf area index was found, no correlation was found with other growth index like relative growth rate, net...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigation scheduling; Water use efficiency; Growth rate.
Ano: 2004 URL:
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