Data/hora: 23/06/2024 01:56:39

Biblioteca(s): 	Embrapa Agroindústria Tropical; Embrapa Tabuleiros Costeiros; Embrapa Territorial.	
Data corrente: 	01/10/2019	
Data da última atualização: 	09/01/2020	
Autoria: 	TEIXEIRA, A. H. de C.; MIRANDA, F. R. de; LEIVAS, J. F.; PACHECO, E. P.; GARCON, E. A. M.	
Afiliação: 	ANTÔNIO HERIBERTO DE CASTRO TEIXEIRA, CPATC; FABIO RODRIGUES DE MIRANDA, CNPAT; JANICE FREITAS LEIVAS, CNPM; EDSON PATTO PACHECO, CPATC; EDLENE APARECIDA MONTEIRO GARCON, CNPM.	
Título: 	Water productivity assessments for dwarf coconut by using Landsat 8 images and agrometeorological data.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	ISPRS Journal of Photogrammetry and Remote Sensing, v. 155, p. 150-158, 2019.	
ISBN: 	0924-2716	
DOI: 	https://doi.org/10.1016/j.isprsjprs.2019.07.006	
Idioma: 	Inglês
Português	
Conteúdo: 	In the coastal areas of Northeast Brazil, coconut growers are replacing the tall varieties by the dwarf ones, following incentives for the coconut?s water market. The current study aimed to determine and analyze actual evapotranspiration (ET) and biomass production (BIO), for dwarf coconut water productivity (WP) assessments. This was done to subsidize the rational irrigation and crop management, by using Landsat 8 images together with agrometeorological data during the year 2016 in the Camocim County, coastal zone of Ceará state. The SAFER (Simple Algorithm for Evapotranspiration Retrieving) algorithm was used to retrieve ET, while for BIO estimations we applied the Monteith?s radiation use efficiency model (RUE), then the water productivity based on ET was calculated (WPET=BIO/ET). The highest ET and BIO rates, above 4.0 ± 0.6mm d&#8722;1 and 140 ± 37 kg ha&#8722;1 d&#8722;1, respectively, happened from May to July, retrieving WPET pixel values larger than 3.5 kgm&#8722;3. It was noticed some water stress conditions, with the fraction ET to reference evapotranspiration (ET0) dropping below 0.60 from the start of August to the end of the year, affecting the WPET values. Considering also WP in terms of fruits and coconut?s water produced, it averaged 1.9 coconut fruits and 0.8 L of coconut water per cubic meter of water consumed, respectively. The results can support techniques for irrigation water storage at the palm root zones, while increasing dwarf coconut yield in Northeast Brazil.	
Palavras-Chave: 	Cocos nucífera L; Gerenciamento de irrigação; Produção de biomassa.	
Thesagro: 	Evapotranspiração; Sensoriamento Remoto.	
Thesaurus Nal: 	Biomass production; Evapotranspiration; Irrigation management; Remote sensing.	
Categoria do assunto: 	--
P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/202488/1/5096.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/206375/1/ART19024.pdf	
Registro original: 	Embrapa Tabuleiros Costeiros (CPATC)	
Exemplares: 	CNPM - (5096-1) - UPC - AP - DD - 19/040 - AP - 2019.040 - DIS
CPATC - (25570-1) - UPC - AP - DD -  -  -  - DIS
CNPAT - (16201-1) - UPC - AP - DD -  -  -  - DIS