干旱区生态环境知识资源中心(Arid): Double zero-tillage and foliar-P nutrition coupled with bio-inoculants enhance physiological photosynthetic characteristics and resilience to nutritional and environmental stresses in maize-wheat rotation

Arid

DOI	10.3389/fpls.2022.959541
	Double zero-tillage and foliar-P nutrition coupled with bio-inoculants enhance physiological photosynthetic characteristics and resilience to nutritional and environmental stresses in maize-wheat rotation
	Harish, M. N.; Choudhary, Anil K.; Bhupenchandra, Ingudam; Dass, Anchal; Rajanna, G. A.; Singh, Vinod K.; Bana, R. S.; Varatharajan, T.; Verma, Parkash; George, Saju; Kashinath, G. T.; Bhavya, M.; Chongtham, S. K.; Devi, E. Lamalakshmi; Kumar, Sushil; Devi, Soibam Helena; Bhutia, Tshering Lhamu
通讯作者	Choudhary, AK
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2022
卷号	13
英文摘要	Conventionally tilled maize-wheat cropping system (MWCS) is an emerging cereal production system in semi-arid region of south-Asia. This system involves excessive tillage operations that result in numerous resource- and production-vulnerabilities besides impeding environmental-stresses. Likewise, phosphorus is a vital nutrient that limits crop growth and development. It's a matter of great concern when similar to 80% of Indian soils are low to medium in available-P due to its sparing solubility, resulting in crop stress and low yields. Hence, crop productivity, photosynthetic parameters and resilience to nutritional and environmental stresses were assessed in a MWCS using four crop-establishment and tillage management (CETM) practices [FBCT-FBCT (Flat bed-conventional tillage both in maize and wheat); RBCT-RBZT (Raised bed-CT in maize and raised bed-zero tillage in wheat); FBZT-FBZT (FBZT both in maize and wheat); PRBZT-PRBZT (Permanent raised bed-ZT both in maize and wheat)], and five P-fertilization practices [P-100 (100% soil applied-P); P-50+2FSP (50% soil applied-P + 2 foliar-sprays of P through 2% DAP both in maize and wheat); P-50+PSB+AM-fungi; P-50+PSB+AMF+2FSP; and P-0 (100% NK with no-P)] in split-plot design replicated-thrice. The results indicated that double zero-tilled PRBZT-PRBZT system significantly enhanced the grain yield (6.1; 5.4 t ha(-1)), net photosynthetic rate (Pn) (41.68; 23.33 mu mol CO2 m(-2) s(-1)), stomatal conductance (SC) (0.44; 0.26 mol H2O m(-2) s(-1)), relative water content (RWC) (83.3; 77.8%), and radiation-use efficiency (RUE) (2.9; 2.36 g MJ(-1)) by 12.8-15.8 and 8.5-44.4% in maize and wheat crops, respectively over conventional tilled FBCT-FBCT. P-50+PSB+AMF+2FSP conjugating soil applied-P, microbial-inoculants and foliar-P, had significantly higher Pn, SC, RUE and RWC over P-100 besides saving similar to 34.7% fertilizer-P under MWCS. P-50+PSB+AMF+2FSP practice also had higher NDVI, PAR, transpiration efficiency and PHI over P-100. Whereas lower stomatal limitation index (Ls) was observed under PRBZT-PRBZT system as compared to the conventional FBCT-FBCT system indicating that P is the limiting factor but not stomata. Hence, optimum P supply through foliar P-fertilization along with other sources resulted in higher grain yield by 21.4% over control. Overall, double zero-tilled PRBZT-PRBZT with crop residue retention at 6 t/ha per year, as well as P-50+PSB+AMF+2FSP in MWCS, may prove beneficial in enhancing the crop productivity and, thereby, bolstering food security in semi-arid south-Asia region.
英文关键词	conservation agriculture P-fertilization photosynthetic rate phosphorus saving radiation-use efficiency relative water content
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000862155500001
WOS关键词	ARBUSCULAR MYCORRHIZAL FUNGI ; CROP MANAGEMENT-PRACTICES ; RESOURCE-USE-EFFICIENCY ; RELATIVE WATER-CONTENT ; IRRIGATION REGIMES ; CONSERVATION AGRICULTURE ; INORGANIC PHOSPHORUS ; NUTRIENT DYNAMICS ; DROUGHT STRESS ; VAM FUNGI
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392866
推荐引用方式 GB/T 7714	Harish, M. N.,Choudhary, Anil K.,Bhupenchandra, Ingudam,et al. Double zero-tillage and foliar-P nutrition coupled with bio-inoculants enhance physiological photosynthetic characteristics and resilience to nutritional and environmental stresses in maize-wheat rotation[J],2022,13.
APA	Harish, M. N..,Choudhary, Anil K..,Bhupenchandra, Ingudam.,Dass, Anchal.,Rajanna, G. A..,...&Bhutia, Tshering Lhamu.(2022).Double zero-tillage and foliar-P nutrition coupled with bio-inoculants enhance physiological photosynthetic characteristics and resilience to nutritional and environmental stresses in maize-wheat rotation.FRONTIERS IN PLANT SCIENCE,13.
MLA	Harish, M. N.,et al."Double zero-tillage and foliar-P nutrition coupled with bio-inoculants enhance physiological photosynthetic characteristics and resilience to nutritional and environmental stresses in maize-wheat rotation".FRONTIERS IN PLANT SCIENCE 13(2022).