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DOI	10.1016/j.jenvman.2020.110398
	New strategies to overcome water limitation in cultivated maize: Results from sub-surface irrigation and silicon fertilization
	Besharat, Sina 1; Barao, Lucia 2,3; Cruz, Cristina 2
通讯作者	Besharat, Sina
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2020
卷号	263
英文摘要	The increasing growth of the world's population has established an unprecedented pressure in the availability of fresh water resources, with food production systems consuming over 70% of the world's fresh water withdrawals. Other pressures include climate change effects and the increasing number of semi-arid regions. The present challenges are therefore the maintenance of high production rates with fewer resources, especially in regions where water is becoming less accessible. In this study, we have tested the effect of sub-surface irrigation and silicon fertilization in maize growth with and without water limitation. These solutions have been suggested as effective in drought conditions but an overall study of their effects on the soil water balance and root length density is lacking. We have conducted a pot experiment with maize for 101 days where measurements in soil water content and root length were taken. Also, Hydrus 2-D was used to simulate the root water uptake and calculate the water balance. Results show that both sub-surface irrigation and silicon fertilization increase the root system by 21% and 34% respectively in water stress situation. Also, in the case of no water stress, silicon fertilization still induces an increase of 11% in the root development, showing that this solution has positive effects even when the crop is not hydrologically limited. Indeed the root water uptake was higher for the silicon treatment when no water limitation was present (71.6 L), compared to the sub-surface irrigation (62.5 L) and the control (62.3 L). While sub-surface irrigation generally decreased evaporation, the silicon treatment lowered drainage by promoting a better and more efficient root water uptake.
英文关键词	Agriculture Freshwater resources Hydrus Management Root growth
类型	Article
语种	英语
国家	Iran ; Portugal
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000530232700031
WOS关键词	DRIP IRRIGATION ; DEFICIT IRRIGATION ; YIELD ; MANAGEMENT ; SIMULATION ; DROUGHT ; QUALITY ; MODEL ; AGRICULTURE ; FERTIGATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319278
作者单位	1.Urmia Univ, Fac Agr, Dept Water Engn, Orumiyeh 57153, Iran; 2.Univ Lisbon, Ctr Ecol Evolut & Environm Changes cE3c, P-1749016 Lisbon, Portugal; 3.Univ Evora, Inst Mediterranean Agr & Environm Sci ICAAM, Nucleo Mitra, Apartado 94, P-7006554 Evora, Portugal
推荐引用方式 GB/T 7714	Besharat, Sina,Barao, Lucia,Cruz, Cristina. New strategies to overcome water limitation in cultivated maize: Results from sub-surface irrigation and silicon fertilization[J],2020,263.
APA	Besharat, Sina,Barao, Lucia,&Cruz, Cristina.(2020).New strategies to overcome water limitation in cultivated maize: Results from sub-surface irrigation and silicon fertilization.JOURNAL OF ENVIRONMENTAL MANAGEMENT,263.
MLA	Besharat, Sina,et al."New strategies to overcome water limitation in cultivated maize: Results from sub-surface irrigation and silicon fertilization".JOURNAL OF ENVIRONMENTAL MANAGEMENT 263(2020).