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Water productivity for sugar and biomass of sugarcane varieties AGRIAMBI
Leal,Daniel P. V.; Coelho,Rubens D.; Barbosa,Fernando da S.; Fraga Júnior,Eusimio F.; Mauri,Robson; Santos,Lucas da C..
ABSTRACT The aim of this study was to evaluate the water productivity into biomass and into sugar for 23 sugarcane varieties (second ratoon crop) under two levels of drip irrigation. Two experiments were conducted in a greenhouse. Experiment 1 comprised nine sugarcane varieties grown in a clay soil and Experiment 2 was composed of 14 varieties in a sandy-loam soil. Moreover, two irrigation treatments were adopted: T100 - full irrigation with 100% crop evapotranspiration replacement, maintaining soil moisture near field capacity for each variety; and T70 - irrigation with 70% T100 water depth. Water productivity was evaluated in terms of stem fresh biomass (WPFB) and sugar (WPGSY). The results showed that WPFB ranged from 11.45 to 18.45 kg m-3. The highest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deficit irrigation; Second ratoon; Evapotranspiration.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000900618
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