Title:	Crop coefficient estimated by degree-days for Marandu palisadegrass and mixed forage.
Authors:	SOUZA, D. P. DE SANCHES, A. C. MENDONÇA, F. C. PEZZOPANE, J. R. M. AMORIN, D. M. JESUS, F. L. F. DE
Affiliation:	DÉBORA PANTOJO DE SOUZA, USP-ESALQ ARTHUR CARNIATO SANCHES, Universidade Federal da Grande Dourados FERNANDO CAMPOS MENDONÇA, Universidade de São Paulo. Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ) JOSE RICARDO MACEDO PEZZOPANE, CPPSE DANIELLE MORAIS AMORIM, Universidade de São Paulo. Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ) FERNANDA LAMEDE FERREIRA DE JESUS, Universidade Federal Rural da Amazônia – UFRA.
Date Issued:	2021
Citation:	Revista de la Facultad de Ciencias Agrarias Unicuyo, v.53, n.2, jul./dec. 2021.
Pages:	p.71-81.
Description:	Considering profitability in pasture-based systems, investigating parameters affecting crop coefficients for irrigation management becomes important. In this experiment, we determined the crop coefficient of Marandu palisadegrass based on accumulated degree-days and estimated plant water consumption under single (Marandu palisade-grass) and mixed (Marandu palisadegrass + black oats + Italian ryegrass) cropping regimes. The research was conducted at the Luiz de Queiroz College of Agriculture in Piracicaba, São Paulo, Brazil, between 2016 and 2017. Evapotranspiration was assessed using weighing lysimeters while crop evapotranspiration was calculated using mean weight variation. Reference evapotranspiration and degree-days were estimated. Data were obtained from an automated weather station. Equations and regression models relating crop coefficient with accumulated degree-days were generated for two seasons (spring/summer and autumn/winter) and evaluated for two year-cycles, from 2015 to 2018. The results showed better prediction accuracy for the single cropping system in spring/summer 2017-18.
Keywords:	Pasto Marandu Evapotranspiración Consumo de agua Forraje
ISSN:	1853-8665
DOI:	https://doi.org/10.48162/rev.39.041
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPPSE)