气候变化领域集成服务门户(CCPortal): Management of drought in sali rice under increasing rainfall variability in the North Bank Plains Zone of Assam; North East India

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DOI	10.1007/s10584-019-02605-4
	Management of drought in sali rice under increasing rainfall variability in the North Bank Plains Zone of Assam; North East India
	Neog P.; Sarma P.K.; Saikia D.; Borah P.; Hazarika G.N.; Sarma M.K.; Sarma D.; Chary G.R.; Rao C.S.
发表日期	2020
ISSN	0165-0009
起始页码	473
结束页码	484
卷号	158 期号:2020-03-04
英文摘要	The intermittent dry spells during growing season of winter or sali rice, cultivated in NBPZ of Assam located in the foothills of Eastern Himalayan region, is a major weather risk causing widespread damage to the crop. Herein, variability of rainfall in Lakhimpur district situated in NBPZ was studied. A significant decreasing trend of annual and seasonal rainfall was observed. Significant decrease in monsoon rainfall and increase in monthly rainfall variability clearly explains the recent rainfall fluctuations with increasing frequency of intermittent dry spells and flash floods. A participatory evaluation trial was conducted in Chamua village of Lakhimpur district having different land situations to identify climate resilient technologies to cope with seasonal drought in sali rice. High-yielding short-duration varieties, viz., Dishang, Luit, Lachit and Kolong, and medium-duration varieties, viz., Basundhara, Mohan, Mulagabhoru and TTB-404 performed consistently better than the long-duration HYV or the traditional varieties under upland and medium land situations, respectively. Though the effect of dry spells on long-duration varieties cultivated on low lands was least, yield of these varieties reduced up to 43.07% when sowing was delayed beyond 23rd of June. Performance of the delayed sown varieties was further declined, when exposed to dry spells at later growth stages. However, adverse impact of dry spells can be managed effectively by replacing farmers’ varieties with short and medium-duration high-yielding varieties in upland and medium lands, respectively, and manipulating sowing time of long-duration varieties for low lands. © 2019, Springer Nature B.V.
英文关键词	Alternate variety; Dry spells management; Sali rice; Seasonal drought
语种	英语
scopus关键词	Cultivation; Rain; Alternate variety; Dry spells; Monthly rainfalls; North- East India; Rainfall variability; Sali rice; Seasonal droughts; Widespread damage; Drought; cultivar; drought; growing season; growth; monsoon; rainfall; rice; sowing; sowing date; India
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147238
作者单位	Department of Agrometeorology, BN College of Agriculture, Biswanath Chariali, Assam 784176, India; All India Coordinated Research Project for Dryland Agriculture, BN College of Agriculture, Biswanath Chariali, Assam 784176, India; Assam Agricultural University, Jorhat, Assam 785013, India; ICAR-Central Research Institute for Dryland Agriculture, Hyderabad, Telangana 500059, India; ICAR-National Academy of Agricultural Research Management, Hyderabad, Telangana 500030, India
推荐引用方式 GB/T 7714	Neog P.,Sarma P.K.,Saikia D.,et al. Management of drought in sali rice under increasing rainfall variability in the North Bank Plains Zone of Assam; North East India[J],2020,158(2020-03-04).
APA	Neog P..,Sarma P.K..,Saikia D..,Borah P..,Hazarika G.N..,...&Rao C.S..(2020).Management of drought in sali rice under increasing rainfall variability in the North Bank Plains Zone of Assam; North East India.Climatic Change,158(2020-03-04).
MLA	Neog P.,et al."Management of drought in sali rice under increasing rainfall variability in the North Bank Plains Zone of Assam; North East India".Climatic Change 158.2020-03-04(2020).