干旱区生态环境知识资源中心(Arid): Criteria based decisions for determining agroclimatic onset of the crop growing season

Arid

DOI	10.1016/j.agrformet.2022.108903
	Criteria based decisions for determining agroclimatic onset of the crop growing season
	Bal, Santanu Kumar; Manikandan, N.; Sandeep, V. M.; Kumar, P. Vijaya; Lunagaria, M. M.; Rao, A. V. M. Subba; Pramod, V. P.; Singh, V. K.
通讯作者	Manikandan, N
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2022
卷号	317
英文摘要	Success of rainfed crop production is highly dependent on timely sowing/planting decisions. Variability in sowing/planting dates between years affect crop planning and thus could decrease farm profitability. Therefore, information on the optimum crop sowing window for the season will facilitate crop planning by farmers and other stakeholders. To determine optimum sowing window over 19 Agro-Ecological Regions (AER) of India, three methods viz., Soil Water Balance (SWB), Depth and modified Morris & Zandesta methods were evaluated to identify the most suitable method for working out the onset dates of the crop growing season. The onset dates of growing season determined by three methods were found to be similar over northeastern (hot sub-humid and warm per-humid eco-region), west coast (hot humid to per-humid), cold and hot arid eco-regions in India. However, differences in onset dates of the crop growing season were observed over hot semi-arid to sub-humid eco-region. SWB method was found to be the most suitable based on validating with observed crop sowing dates, false start and number of undefined onset years criteria. However, as SWB method is data-intensive, onset was determined using an alternative Modified Threshold Combination (MTC) method comprising 40 combinations of threshold values viz. rainfall amount, wet spell duration, dry spell duration and dry spell search period. The onset dates determined by MTC and SWB methods were validated and subsequently, appropriate threshold values were identified to work out onset dates in 19 AERs of India. This study revealed that the onset is not influenced by threshold combinations in per-humid, humid and sub-humid regions. However, in semi-arid and arid regions, critical evaluation of criteria for determining onset is vital to avoid false starts and undefined onset years. Information on agroclimatic onset dates for each AER is useful for improving practical utility/decision making, especially in the semi-arid and arid regions of India.
英文关键词	Onset Rainfall Crop growing season Threshold criteria False start Agro-ecological regions
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000795644900002
WOS关键词	MONSOON ONSET ; RAINY-SEASON ; SUMMER MONSOON ; INTERANNUAL VARIABILITY ; CLIMATE-CHANGE ; WEST-AFRICA ; RAINFALL ; CESSATION ; TEMPERATURE ; PREDICTABILITY
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391568
推荐引用方式 GB/T 7714	Bal, Santanu Kumar,Manikandan, N.,Sandeep, V. M.,et al. Criteria based decisions for determining agroclimatic onset of the crop growing season[J],2022,317.
APA	Bal, Santanu Kumar.,Manikandan, N..,Sandeep, V. M..,Kumar, P. Vijaya.,Lunagaria, M. M..,...&Singh, V. K..(2022).Criteria based decisions for determining agroclimatic onset of the crop growing season.AGRICULTURAL AND FOREST METEOROLOGY,317.
MLA	Bal, Santanu Kumar,et al."Criteria based decisions for determining agroclimatic onset of the crop growing season".AGRICULTURAL AND FOREST METEOROLOGY 317(2022).