干旱区生态环境知识资源中心(Arid): Co-implementation of tillage, irrigation, and fertilizers in soybean: Impact on crop productivity, soil moisture, and soil microbial dynamics

Arid

DOI	10.1016/j.fcr.2022.108672
	Co-implementation of tillage, irrigation, and fertilizers in soybean: Impact on crop productivity, soil moisture, and soil microbial dynamics
	Rajanna, G. A.; Dass, Anchal; Suman, Archana; Babu, Subhash; Venkatesh, Paramesh; Singh, V. K.; Upadhyay, Pravin Kumar; Sudhishri, Susama
通讯作者	Rajanna, GA ; Dass, A
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2022
卷号	288
英文摘要	Due to depleting water supplies and the cultivation of high water-demanding crops like rice, water deficit in crop production has become a major concern, especially in semi-arid regions of South Asia. Soybean has been considered a possible substitution for high-water-demand crops with improved water productivity and nutrient quality. However, due to inefficient and injudicious water and fertilizer management, the overall productivity and profitability of soybean is quite low. Hence, a three-year field investigation was carried out using strip-strip plot design with three replications to study the individual and combined effects of tillage, irrigation, and fer-tilizer levels on crop yield and quality, soil moisture and soil microbial dynamics. Results revealed that zero tilled-flat beds (ZTFB) and conventional tilled-raised beds (CTRB) reduced the irrigation water requirement by 5.15-5.45 and 3.12-3.49 cm ha-1, respectively, compared to conventional tilled-flat beds (CTFB). Moreover, CTRB enhanced seed yield by 8.1-31.5 %, biomass yield by 6.5-34.1 %, crop water productivity (CWP) by 27.2-30.9 %, and irrigation water productivity (IWP) by 55.2-57.5 % over CTFB. Similarly, in 2016 and 2017, CTRB had higher SPAD-chlorophyll content (34.3 and 33.2 in the top leaves) and normalized difference vege-tation index (NDVI) (0.51 and 0.71) values than CTFB and ZTFB. At 0.0-0.30 m soil depth, ZTFB showed the highest soil moisture content of 11.2 % and 22.5 %, respectively, leading to the highest relative water content (RWC) of 76.7-78.7 % in soybean leaves. As a result, ZTFB took 4-8 days longer to mature than CTFB, delaying the sowing of the following wheat crop. During the 2016-2018 growing seasons, irrigation applied at the depletion of available soil moisture (DASM) by 25 % and 100 % rate of recommended fertilizer (RRF) achieved significantly higher crop, biomass yields, protein yield, SPAD, NDVI, and CWP than irrigation at lower levels. Interaction effects revealed that combinations of CTRB and ZTFB + 25 % DASM + 100 % RRF strategies generated significantly (P <= 0.05) higher seed yield, biomass yield, and CWP. At the same time, ZTFB had significantly higher alkaline and acid phosphatase activity than CTRB, whereas the latter had significantly higher soil microbial biomass carbon. In comparison to individual use of these crop management methods, the results of this study showed planning soybean either in CTRB or ZTFB, irrigating at 25 % DASM, and fertilizing crops with 100 % RRF could help achieve higher crop and water productivity, thus sustaining soybean production in India and adjoining regions with similar agro-ecology.
英文关键词	Zero tilled-flat beds Conventional tilled-raised beds Available soil moisture depletion Water reserves Seed yield Resource use efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000870843600004
WOS关键词	INDO-GANGETIC PLAINS ; WHEAT TRITICUM-AESTIVUM ; WATER-USE EFFICIENCY ; CONSERVATION AGRICULTURE ; GRAIN-YIELD ; GLYCINE-MAX ; DEHYDROGENASE-ACTIVITY ; DEFICIT IRRIGATION ; ORGANIC-CARBON ; SEED YIELD
WOS类目	Agronomy
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/2XILL650/392587
推荐引用方式 GB/T 7714	Rajanna, G. A.,Dass, Anchal,Suman, Archana,et al. Co-implementation of tillage, irrigation, and fertilizers in soybean: Impact on crop productivity, soil moisture, and soil microbial dynamics[J],2022,288.
APA	Rajanna, G. A..,Dass, Anchal.,Suman, Archana.,Babu, Subhash.,Venkatesh, Paramesh.,...&Sudhishri, Susama.(2022).Co-implementation of tillage, irrigation, and fertilizers in soybean: Impact on crop productivity, soil moisture, and soil microbial dynamics.FIELD CROPS RESEARCH,288.
MLA	Rajanna, G. A.,et al."Co-implementation of tillage, irrigation, and fertilizers in soybean: Impact on crop productivity, soil moisture, and soil microbial dynamics".FIELD CROPS RESEARCH 288(2022).