Impact of irrigation on yield and energy balance of the production of oil and cake of two sunflower varieties

RESUMOO objetivo desse trabalho foi avaliar a influência de diferentes lâminas de irrigação e arranjos de gotejadores nas características morfofisiológicas de variedades de girassol. O delineamento experimental foi em blocos casualizados dispostos em esquema fatorial 2x2x4, considerando duas variedades de girassol (Hélio 251 e Hélio 360), dois arranjos das linhas de gotejo (fileiras simples e fileiras duplas) e quatro lâminas de irrigação (75, 90, 105 e 120% da ETc), com três repetições. Foram avaliados altura, diâmetro do caule, número de folhas, peso do capítulo, peso de mil aquênios, produtividade e respostas fisiológicas das plantas. A partir dos resultados obtidos, foi observado que, no geral, a lâmina correspondente a 100% da ETc proporcionou as melhores respostas para o cultivo das variedades de girassol Hélio 251 e Hélio 360. Considerando a não diferença significativa entre os arranjos das linhas de gotejadores, o de fileiras duplas torna-se o mais viável para o cultivo de girassol, tendo em vista sua maior economia na instalação do sistema de irrigação. O teor de óleo dos aquênios não é influenciado pela disponibilidade de água para as plantas de girassol. Palavras-chave: ABSTRACTThe aim of this study was to evaluate the influence of different irrigation drip in single and double rows on morphological and physiological characteristics of sunflower varieties. The experimental design was randomized blocks in a factorial 2x2x4 considering two varieties (Hélio 251 e Hélio 360), two provisions of drip lines (single and double rows), four irrigation levels (75, 90, 105 and 120% of ETc) and three replications. At the end of the experiment,

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“…Jordan et al (2012), também verificaram que a irrigação propiciou aumento de produtividade das duas variedades de girassol trabalhadas.…”

Section: Figura 1 Efeito Das Lâminas De Irrigação Na Altura Das Planunclassified

Aspectos Morfofisiológicos Do Girassol Irrigado Por Gotejamento No Submédio São Francisco

Simões

Coelho

Souza

et al. 2018

R_I

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“…However, the productivity increase in the area under irrigation during the whole cycle reached 85.89% (Table 4). Fertilizers and diesel oil were the main energy inputs (Figure 3) likewise observed by Checheto et al (2010) and Jordan et al (2012a), coming after only electricity, the main input in irrigated areas given the power consumed by the pumping system.…”

Section: Resultsmentioning

confidence: 84%

“…The water depth applied composed the irrigation phase. The methodology by Jordan et al (2012a), which considers the energy equivalence values, was used to determine the energy used in the sugar sorghum production (Table 2). The energy depreciation related to the equipment used was performed according to the methodology by Assenheimer et al (2009) and Jordan et al (2012a), according to service life, weight, and respective energy coefficients (Table 3).…”

Section: Methodsmentioning

confidence: 99%

“…The methodology by Jordan et al (2012a), which considers the energy equivalence values, was used to determine the energy used in the sugar sorghum production (Table 2). The energy depreciation related to the equipment used was performed according to the methodology by Assenheimer et al (2009) and Jordan et al (2012a), according to service life, weight, and respective energy coefficients (Table 3). The energy coefficients used according to Assenheimer et al (2009) were 69.83MJ/kg for self-propulsion equipment (tractor and combine), and 57.20MJ/kg for pulled equipment (plow, harrow, sprayer, etc.).…”

Section: Methodsmentioning

confidence: 99%

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Energy Balance of Irrigated and Rainfed Sorghum Production

et al. 2017

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ABSTRACT:The objective of this study was to evaluate the yield and energy balance of four sorghum genotypes in irrigated and rainfed crops. The experiment was conducted in an irrigation and drainage unit at the Federal University of Grande Dourados (UFGD), in Dourados, Mato Grosso do Sul state (Brazil). The experimental design was a randomized complete block design with split plots (with and without irrigation), testing four genotypes (BRS 506, CV 007, CV 147, and EJ 7281) with four replicates (32 plots). Irrigation provided yield increase in all four genotypes. The respective yield increases were 85.89%, 71.82%, 64.28%, and 63.36% for genotypes EJ 7281, BRS 506, CV 147, and CV 007. The energy efficiency (produced/ used ratio) was on average 3.5 under irrigation, and 2.8 for rainfed crops. These results indicate the lack of competition between sorghum and sugarcane, being the first an alternative for off-season. Irrigation increased productivity, leading to an increase in yield and, consequently, in the amount of extracted energy. Yield gains in response to irrigation were more pronounced for genotype EJ 7281. There was a positive impact of irrigation on the energy balance of the four genotypes, increasing energy efficiency.

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“…Em trabalho conduzido com a cultura do girassol, Jordan et al (2012a) verificaram que o balanço de energia decresceu em função das lâminas de irrigação. Para a cultura da mamona, Jordan et al (2012b) verificaram que o balanço de energia não foi afetado pela irrigação; entretanto há, ainda, poucos estudos através dos quais se avalia o balanço energético da agricultura irrigada.…”

Section: Introductionunclassified

Análise econômica e viabilidade energética da cultura do feijoeiro comum sob irrigação

Gomes

Jordan

Motomiya

et al. 2013

Rev. bras. eng. agríc. ambient.

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RESUMOEste trabalho foi realizado com o objetivo de avaliar a viabilidade econômica e energética da cultura do feijoeiro comum de terceira safra com lâminas de irrigação na região Noroeste do Paraná. O experimento foi implantado com seis lâminas de irrigação e quatro repetições, em delineamento de blocos ao acaso. A cultura do feijoeiro não foi viável economicamente sem irrigação. Os lucros cresceram com o aumento das lâminas de irrigação atingindo um lucro operacional total de R$1.427,24 ha -1 na lâmina de 333 mm. O preço de equilíbrio sem irrigação foi de R$ 134,06 e R$ 152,65 a saca, em curto e longo prazos, respectivamente. A irrigação favoreceu o balanço energético (energia extraída/energia utilizada) de maneira linear atingindo 1,63 na aplicação da maior lâmina (333 mm).Palavras-chave: custo operacional de produção, manejo de irrigação, terceira safra, balanço de energia Economic analysis and energetic viability of the common bean crop under irrigation ABSTRACT This study was conducted to evaluate the economic and energetic viability of the third season of common bean under irrigation depths in the northwestern region of Parana. The experiment was established with six irrigation levels and four replications in a randomized block design. The bean crop was not economically viable without irrigation. Operating profit increased with increasing irrigation depths, reaching a total operating profit of R$ 1,427.24 ha -1 by 333 mm irrigation depth. The equilibrium price without irrigation was R$ 134.06 and R$ 152.65 bag -1 , short and long term, respectively. The irrigation favored the energy balance extracted (energy/used energy), reaching 1.63 in the application of greater depth (333 mm).

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Impact of irrigation on yield and energy balance of the production of oil and cake of two sunflower varieties

Cited by 6 publications

References 12 publications

Aspectos Morfofisiológicos Do Girassol Irrigado Por Gotejamento No Submédio São Francisco

Aspectos Morfofisiológicos Do Girassol Irrigado Por Gotejamento No Submédio São Francisco

Energy Balance of Irrigated and Rainfed Sorghum Production

Análise econômica e viabilidade energética da cultura do feijoeiro comum sob irrigação

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