Balanço de radiação da cana-de-açúcar irrigada por gotejamento subsuperficial no submédio do vale São Francisco

Carmo, José Francisco Alves do; Moura, Magna Soelma Beserra de; Silva, Thieres George Freire da; Souza, Luciana Sandra Bastos de; Leitao, Mario de Miranda Vilas Boas Ramos

doi:10.31062/agrom.v25i1.26270

Cited by 4 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Dos 406 dias monitorados, 33,86% foram caracterizados como válidos. Percentual bem abaixo do encontrado por Carmo (2013), que ao trabalhar com cana-de-açúcar no semiárido do Nordeste brasileiro, alcançou 77% de dias válidos. O percentual baixo de dias válidos foi motivado pela ocorrência de muitos dias invalidados decorrentes da significativa presença do erro tipo B.…”

Section: Resultsunclassified

“…Para a estimativa da evapotranspiração da cultura (ETc) por meio do método de balanço de energia por Bowen Ratio (BERB) adotou-se o procedimento recomendado por Silva et al (2012) e Carmo (2013). Para avaliar os erros associados com o método BERB na estimativa dos valores de β e, consequentemente, no cálculo dos fluxos de calor latente (LE) e sensível (H), foi utilizada a metodologia desenvolvida por Perez et al (1999).…”

Section: Methodsunclassified

See 1 more Smart Citation

Demanda hídrica da cana-de-açúcar, por balanço de energia, na microrregião de Teresina, Piauí

Andrade¹,

Noleto²,

Bastos³

et al. 2018

AgroM

Self Cite

View full text Add to dashboard Cite

O objetivo deste estudo foi quantificar a demanda hídrica da cana-de-açúcar, por meio do método de balanço de energia (razão de Bowen), na microrregião de Teresina, Piauí. O experimento foi conduzido na Usina COMVAP, na microrregião de Teresina, Piauí. A cultivar utilizada foi a RB867515, irrigada por pivô central. Para a estimativa de evapotranspiração da cultura (ETc) usou-se uma torre equipada com sensores microeletrônicos instalada no centro de um talhão de 10 ha. A evapotranspiração de referência (ETo) foi estimada pelo método Penman-Monteith. A análise de consistência física dos dados de ETc mostrou que 33,9% dos 406 dias monitorados foram consistentes. A ETc média diária foi de 5,3 mm, totalizando uma demanda de 2.650 mm, para os 498 dias do ciclo. O coeficiente de cultivo (Kc) médio por fase foi de 0,9 (crescimento rápido), 1,32 (máximo desenvolvimento) e 1,07 (maturação).

show abstract

Section: Resultsunclassified

Section: Methodsunclassified

Demanda hídrica da cana-de-açúcar, por balanço de energia, na microrregião de Teresina, Piauí

Andrade¹,

Noleto²,

Bastos³

et al. 2018

AgroM

Self Cite

View full text Add to dashboard Cite

show abstract

“…There was a decrease in evapotranspiration for all land uses from the month of February. The areas occupied by sugarcane presented a higher rate of ETR than the natural, agricultural, pasture, urban and water areas during the months of May to September, due to the fact that during these months sugarcane requires more solar radiation, absorbs more carbon dioxide, and thus the stomata will become open by losing water to the atmosphere (Carmo et al, 2017).…”

Section: Real Evapotranspiration (Etr)mentioning

confidence: 99%

Analysis of the Impact of Land Use and Occupation on the Biophysical Variables of the Cerrado Biome in Southwest Goiano, Brazil

Morães¹,

Giongo²,

Mesquita³

et al. 2018

JAS

View full text Add to dashboard Cite

The change in the use of natural vegetation by annual or perennial crops, sugarcane and fast-growing forests causes changes in the biophysical variables, and these changes can be monitored by remote sensing. The objective of this work was to evaluate, on a temporal scale, the impacts of land use changes on biophysical variables in the county of Santa Helena de Goias-Goias/Brazil. Between the years of 2000 to 2015 areas were identified for agricultural crops 1 (annual crops), water, agricultural crops 2 (sugarcane), natural vegetation, pasture and urban areas. The MODIS (Moderate Resolution Spectroradiometer) sensor products were selected for study: MOD11A2-Surface temperature; MOD16A2-Real evapotranspiration, MOD13Q1-Enhanced Vegetation Index and rainfall data from TRMM (Tropical Rainfall Measuring Mission). The geographic coordinates referring to the land uses were inserted in the LAPIG platform, searching the information of the biophysical variables referring to the selected pixel. The impact of land use change was evaluated by calculating the weighted average through the quantitative classification of the areas. It is concluded for the period of study that the index of average vegetation of the county had increase. There was an increase in the evapotranspiration volume of the county from 28% from 2000 to 2013 and the average surface temperature of the county showed a reduction of 2 °C in the period from 2000 to 2015.

show abstract

“…In all surveys involving rainfed and irrigated crops, the conclusions are unanimous in affirming increased production with irrigation (Biswas, 1988;Doorenbos & Kassam, 1994;Souza et al, 2012;Carmo, 2013). Thus, it is not enough to develop new sugarcane varieties with high productive potential, since water will be a decisive and limiting factor in increasing productivity.…”

Section: Irrigationmentioning

confidence: 99%

“…The technical coefficient matrix for irrigated agriculture covers 57 crops, aggregated into 12 groups (rice, maize grains, wheat and cereals, sugarcane, soybeans, other crops 4 , cassava, tobacco, cotton, citrus fruits, coffee, and native plants) to reconcile with TERM-BR (CGE). Many studies indicated that the initial values for sugarcane water use technical coefficient showed great differences for the northeast region (Biswas, 1988;Doorembos & Kassam, 1994;Souza et al, 2012;Carmo, 2013;Ana, 2017). ANA (2017) showed that sugarcane had the largest irrigated area with 2,069 million ha in Brazil, and the crop can use 300 5 to 1,000 mm/year when doing full 6 irrigation.…”

Section: Databasementioning

confidence: 99%

Water demand prospects for irrigation in the São Francisco River: Brazilian public policy

Ferrarini

Filho²,

Cuadra

et al. 2020

Water Policy

View full text Add to dashboard Cite

This study analyzed how irrigation expansion in the São Francisco Hydrographic Region (SFRH) could affect water availability in four physiographic regions: Upper, Middle, sub-Middle, and Lower SFRH. The Brazilian National Water Resources Plan (PNRH) is the main policy for water resources in Brazil. The PNRH, however, did not evaluate how the expansion of the irrigated area could affect water demand. We use a detailed computable general equilibrium model (CGE), applicable to Brazil, to simulate expansion scenarios in irrigated areas for 2025 and 2035, according to the Water Resources Plan for the São Francisco River (SFP). Simulations were carried out for areas deemed potentially suitable for irrigation. The Climatic Water Balance (CWB) was estimated for the SFRH to compare water supply and water demand. Results suggest that cities located in the Upper and Middle São Francisco Regions would present greater irrigation potential due to water availability and proximity to large irrigated areas. The comparative result of the CWB and the CGE model shows water availability problems in the states of Alagoas and Pernambuco, in particular, cities located in the São Francisco Lower Region.

show abstract

Balanço de radiação da cana-de-açúcar irrigada por gotejamento subsuperficial no submédio do vale São Francisco

Cited by 4 publications

References 11 publications

Demanda hídrica da cana-de-açúcar, por balanço de energia, na microrregião de Teresina, Piauí

Demanda hídrica da cana-de-açúcar, por balanço de energia, na microrregião de Teresina, Piauí

Analysis of the Impact of Land Use and Occupation on the Biophysical Variables of the Cerrado Biome in Southwest Goiano, Brazil

Water demand prospects for irrigation in the São Francisco River: Brazilian public policy

Contact Info

Product

Resources

About