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

Andrade, A. S. de; Noleto, Donavan Holanda; Bastos, E. A.; Moura, Magna Soelma Beserra de; Anjos, João Carlos Rocha dos

doi:10.31062/agrom.v25i1.26282

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…Pearson's correlation, canonical correlation, and Stepwise regression analyses indicated that the most important meteorological variable for the growth and development of sugarcane in the central and northwest regions of the state of Rio Grande do Sul is air temperature, i.e., the ATS. This result differs from those of most studies reported in the literature, in which the main variable that determines the growth and development of sugarcane is precipitation (DIAS et al, 1999;DARLI et al, 2008;LI & YANG, 2014;KUMAR et al, 2016;ANDRADE JUNIOR et al, 2017). However, in the studied regions, the annual precipitation ranges from 1990 mm to 2500 mm, which is 500 to 1000 mm higher than that in the regions where sugarcane is traditionally grown (ALVARES et al, 2013).…”

Section: Resultscontrasting

confidence: 65%

Meteorological factors responsible for the growth and development of sugarcane at two locations in Rio Grande do Sul, Brazil

et al. 2021

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This study determined the meteorological variable that most contribute to the productivity of sugarcane stalks in the northwest and central regions of Rio Grande do Sul. The following sugarcane genotypes were used: UFSM XIKA FW, UFSM LUCI FW, UFSM PRETA FW, UFSM DINA FW, UFSM MARI FW, and IAC87-3396. The UFSM cultivars originate from a mutation process in the breeding program conducted at the Federal University of Santa Maria, Frederico Westphalen campus, and have low temperature tolerance. The productivity-associated morphological characters included in the models were average stem diameter, average stem number per meter of furrow, and average stem height. The following meteorological variables were used: minimum air temperature, precipitation, incident solar radiation, and accumulated thermal sum. Pearson’s correlation, canonical correlations, and Stepwise regression were performed between morphological characters and meteorological variables: minimum air temperature had the greatest influence on sugarcane productivity in the studied regions, and accumulated thermal sum showed the highest correlation and contributed most to stem diameter and average stem height. Thus, the models indicated that the growth of sugarcane is positively associated with the accumulated thermal sum, and sugarcane can be cultivated at the studied regions.

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Section: Resultscontrasting

confidence: 65%

Meteorological factors responsible for the growth and development of sugarcane at two locations in Rio Grande do Sul, Brazil

et al. 2021

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“…The irrigation depth was established based on crop evapotranspiration (ETc), using the reference evapotranspiration (ETo) estimated by the Penman-Monteith method, based on daily climatic data from an automatic weather station installed at the site (Embrapa Meio-Norte) and on crop coefficients of sugarcane established for the region (ANDRADE JÚNIOR et al, 2017). The irrigation application frequency was three times a week (Mondays, Wednesdays, and Fridays).…”

Section: Methodsmentioning

confidence: 99%

Nitrate and Potassium Dynamics in Profiles of Soils Cultivated With Fertigated Sugarcane Crops

et al. 2019

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The objective of this study was to evaluate the distribution of NO3 - and K+ in the profile of soils cultivated with sugarcane crops, after application of different nitrogen (N) and potassium (K2O) rates via subsurface drip fertigation, in Teresina, PI, Brazil. The experiment was conducted at the experimental area of Embrapa Meio-Norte, using a randomized block design with four replications. The treatments were arranged in split plots, with N+K2O rates (60+120, 180+120, 120+60, 120+180, and 120+120 kg ha-1 of N + K2O, respectively) in the plots, and soil layers (0.0-0.2, 0.2-0.4, and 0.4-0.6 m), for quantification of NO3- and K+ concentrations in the soil, in the subplots. The soil of the experimental area was a Typic Hapludult of sandy-loam texture. The distribution of nitrate (NO3-) and potassium (K+) in the soil layers after the N+K2O applications were evaluated. The NO3- and K+ concentrations in soils under sugarcane crops in the plant crop cycle is higher at the beginning and at the end of the cycle, respectively. The NO3 - and K+ concentrations in the soil solution are dependent on the evaluation time, soil layer, and N and K2O rates applied via fertigation. The highest concentrations of NO3- (264 mg L-1) and K+ (377 ppm) were found in the 0.0-0.2 m soil layer. No leaching of NO3- or K+ to deepest soil layers (>0.4 m) was found.

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“…É mais apropriado substituir a palavra consumo pela palavra uso. O consumo traz uma visão equivocada de que a água que passa pelo interior da planta é permanentemente perdida, desaparece do sistema hídrico (ANDRADE JÚNIOR et al, 2018;SANTIAGO et al, 2018). E é um equívoco concluir que a cana-de-açúcar em sistema irrigado, por utilizar água proveniente dos cursos d'água, usa mais água que uma cana de sequeiro.…”

Section: Mito: Cana Sob Sistema Irrigado Consome Mais áGua Do Que Em ...unclassified

Agricultura irrigada no Brasil: inovação, empreendedorismo e sistemas de produção

2022

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A evolução da tecnologia da irrigação associada aos aspectos agronômicos permitiu um avanço no entendimento do sistema de produção e, com isso, o desenvolvimento da agricultura irrigada, onde a produção vegetal está associada a um novo paradigma, envolvendo a escolha de uma rotação de cultura adequada do ponto de vista agronômico, comercial e da sustentabilidade. O sistema de produção passou a exigir diferentes estratégias caracterizando que a agricultura irrigada é distinta da agricultura de sequeiro mais aplicação de água. Questiona-se não só o que plantar, mas também qual variedade cultivada seria mais adequada a disponibilidade permanente da água, possibilidade de organizar o calendário de cultivos com vista a um melhor atendimento do mercado, novos critérios de planejamento da fertilização da cultura e dos tratamentos fitossanitários, com o uso da quimigação como uma das suas principais tecnologias que é a fertirrigação. Para isso, foi fundamental o incentivo e a apropriação das inovações que cada dia permitem uma melhor condução e acompanhamento do sistema produtivo. Os temas inovação, empreendedorismo e sistemas de produção sem vírgula são tratados dentro das diferentes abordagens da agricultura irrigada no Brasil, constituindo uma importante contribuição para o desenvolvimento sustentável da agricultura irrigada brasileira e mundial.

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

Cited by 6 publications

References 3 publications

Meteorological factors responsible for the growth and development of sugarcane at two locations in Rio Grande do Sul, Brazil

Meteorological factors responsible for the growth and development of sugarcane at two locations in Rio Grande do Sul, Brazil

Nitrate and Potassium Dynamics in Profiles of Soils Cultivated With Fertigated Sugarcane Crops

Agricultura irrigada no Brasil: inovação, empreendedorismo e sistemas de produção

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