2010
DOI: 10.1590/s0034-737x2010000200014
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Abstract: Degree-day-based crop coefficient for hydroponic lettuceThe main objective in this work was to propose the adoption of a thermal crop coefficient by using accumulated degree-days after transplanting to estimate lettuce daily evapotranspiration (ET c ) for the cultivars Grand Rapids, Regina and Great Lakes in a NFT hydroponic system under protected environment. Subsequently, the adjusted model to the observed values of K c was used for estimating ET c during the growing period after transplanting with the follo… Show more

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Cited by 3 publications
(3 citation statements)
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References 15 publications
(3 reference statements)
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“…O sistema hidropônico em ambiente protegido é uma opção para combater os problemas citados anteriormente. Esse aprimora o uso da água e dos fertilizantes, minimizando os problemas ambientas que ocorrem devido a contaminação pelos componentes químicos no lençol freático (MOURA et al, 2010).…”
Section: Noções Introdutóriasunclassified
“…O sistema hidropônico em ambiente protegido é uma opção para combater os problemas citados anteriormente. Esse aprimora o uso da água e dos fertilizantes, minimizando os problemas ambientas que ocorrem devido a contaminação pelos componentes químicos no lençol freático (MOURA et al, 2010).…”
Section: Noções Introdutóriasunclassified
“…The influence of air temperature on the crops is expressed by the accumulation of temperature between upper and lower limiting bands, corresponding to the growth cycle of the species, named as growing degrees days (GDD). Several authors have correlated GDD with biometric parameters, such as leaf area, light interception (Moreno et al, 2014), crop coefficient (Moura et al, 2010;Silva et al, 2012), and also, related to the dry matter yield (Cruz et al, 2011;Pezzopane et al, 2012), generating a better understanding of the crop development in relation to the air temperature surrounding the plant at each moment, which may be adequate, more, or less than the plant needs. The productive responses of irrigate pastures are different from those non-irrigated.…”
Section: Introductionmentioning
confidence: 99%
“…A altura do dossel a IL = 95% ficou entre 24 e 34 cm, dependo do ciclo. Diversos trabalhos foram realizados para gerar interações entre graus-dias e outros fatores, dentre esses a área foliar (SOUZA et al, 2010), a interceptação luminosa (MORENO et al, 2014), o coeficiente de cultura (MOURA et al, 2010;SILVA et al, 2012) e a profundidade efetiva de raízes (GURSKI et al, 2016). Em todos os trabalhos, a interação foi significativa e apresentou altos coeficientes de determinação.…”
Section: Naunclassified