干旱区生态环境知识资源中心(Arid): Supplemental irrigation using brackish water on maize in tropical semi-arid regions of Brazil: yield and economic analysis

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DOI	10.1590/1678-992X-2020-0151
	Supplemental irrigation using brackish water on maize in tropical semi-arid regions of Brazil: yield and economic analysis
	Cavalcante, Eduardo Santos; de Lacerda, Claudivan Feitosa; Tavora Costa, Raimundo Nonato; Gheyi, Hans Raj; Pinho, Luciana Luzia; Servulo Bezerra, Francisco Mardones; de Oliveira, Adriana Cruz; Canja, Juvenaldo Florentino
通讯作者	Cavalcante, ES (corresponding author), Univ Fed Ceara, Ctr Ciencias Agr, Dept Engn Agr, Av Mister Hull 2977, BR-60356001 Fortaleza, Ceara, Brazil.
来源期刊	SCIENTIA AGRICOLA
ISSN	1678-992X
出版年	2021
卷号	78
英文摘要	Supplemental irrigation during dry spells could reduce maize yield losses in tropical semi-arid regions, notably in small farms. However, good quality water reserves are not sufficient to meet the demands of farming communities. Consequently, our objective was to evaluate the productivity and profitability of maize under different simulated rainfall scenarios, with and without supplemental irrigation (SI) with brackish water. The field experiments were carried out during the cropping seasons of 2018 and 2019 on Ultisol. The experiment followed a randomized block design in the split-plot scheme with four replicates. The plots were formed by simulating the water supply in the soil corresponding to four water scenarios (rainy, normal, drought and severe drought), and the sub-plots with or without SI with brackish water (Electrical conductivity of 4.5 dS m(-1)). Mean yields of green maize ears were 13,083, 11,532, 10,358 and 9,609 kg ha(-1) for rainy, normal, drought and severe drought scenarios, as supplemented with brackish water. For the same treatments without SI the values were 11,394, 7,896, 3,913 and 1,374 kg ha(-1), respectively. Data on farmer's income showed that under normal, drought and severe drought supplementation with brackish water becomes economically advantageous from 0.9, 1.0 and 2.4 ha, respectively, while maize cultivation without SI is not advantageous under the last two scenarios. For severe drought conditions, however, SI using brackish water reduced commercial yield by 27 % with negative effects on the farmers' profitability. In this case, it is necessary to use water with either lower salinity or select salt tolerant crops.
英文关键词	rainfed farming salinity supplementary irrigation biosaline agriculture
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000637810400002
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351691
作者单位	[Cavalcante, Eduardo Santos; de Lacerda, Claudivan Feitosa; Tavora Costa, Raimundo Nonato; Pinho, Luciana Luzia; Servulo Bezerra, Francisco Mardones; de Oliveira, Adriana Cruz; Canja, Juvenaldo Florentino] Univ Fed Ceara, Ctr Ciencias Agr, Dept Engn Agr, Av Mister Hull 2977, BR-60356001 Fortaleza, Ceara, Brazil; [Gheyi, Hans Raj] Univ Fed Reconcavo Bahia, Nucleo Engn Agua & Solo, Campus Univ Cruz das Almas,Rua Rui Barbosa 710, BR-44380000 Cruz Das Almas, BA, Brazil
推荐引用方式 GB/T 7714	Cavalcante, Eduardo Santos,de Lacerda, Claudivan Feitosa,Tavora Costa, Raimundo Nonato,et al. Supplemental irrigation using brackish water on maize in tropical semi-arid regions of Brazil: yield and economic analysis[J],2021,78.
APA	Cavalcante, Eduardo Santos.,de Lacerda, Claudivan Feitosa.,Tavora Costa, Raimundo Nonato.,Gheyi, Hans Raj.,Pinho, Luciana Luzia.,...&Canja, Juvenaldo Florentino.(2021).Supplemental irrigation using brackish water on maize in tropical semi-arid regions of Brazil: yield and economic analysis.SCIENTIA AGRICOLA,78.
MLA	Cavalcante, Eduardo Santos,et al."Supplemental irrigation using brackish water on maize in tropical semi-arid regions of Brazil: yield and economic analysis".SCIENTIA AGRICOLA 78(2021).