Cropping systems influence microbial diversity, soil quality and crop yields in Indo-Gangetic plains of India

Singh, S. R.; Yadav, Poonam; Singh, Dinesh; Tripathi, Manoj Kumar; Bahadur, Lal; Singh, S. Paul; Mishra, Aradhana; Kumar, Sanjeev

doi:10.1016/j.eja.2020.126152

Cited by 22 publications

(8 citation statements)

References 51 publications

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“…Inoculation of B. megaterium CHW-2 significantly increased the partial factor productivity, agronomic efficiency, apparent nutrient recovery, and physiological efficiency as compared to other inoculants under field conditions. These results are in agreement with the finding of several other studies which reported that PGPRs significantly increased the uptake and translocation of mineral nutrients from the soil and biofortified wheat and other crops (Adesemoye et al, 2008 ; Shaharoona et al, 2008 ; Arif et al, 2017 ; Çakmakçi et al, 2017 ; Di Benedetto et al, 2017 ; Pereira et al, 2020 ; Singh et al, 2020 ). Based on the results of the present investigation and the observations of the previous researchers, it can be summarized that zinc-solubilizing rhizobacteria can be used as an alternate strategy for in vivo Zn solubilization and enhance Zn uptake and translocation in the plants to cope with the Zn deficiency in wheat.…”

Section: Discussionsupporting

confidence: 92%

“…The soils of the Indo-Gangetic plains of the Indian sub-continent are considered one of the mineral-rich soils in India. It harbors a rich microbial gene pool, which plays an important role in nutrient geo-cycling, nutrient mineralization, waste decomposition, and soil processes, and provides protection from several biotic and abiotic stresses including nutritional deficiencies (Malviya et al, 2011 ; Srivastava et al, 2014 ; Sharma et al, 2015 ; Kumari et al, 2016 ; Choudhary et al, 2018a , b ; Singh et al, 2020 ). Of the 175 bacterial strains, 42 strains were found to solubilize either zinc carbonate (ZnCO 3 ), zinc oxide (ZnO), and zinc phosphate {Zn 3 (PO 4 ) 2 } or any two or all three compounds of insoluble Zn.…”

Section: Discussionmentioning

confidence: 99%

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Zinc-solubilizing Bacillus spp. in conjunction with chemical fertilizers enhance growth, yield, nutrient content, and zinc biofortification in wheat crop

Yadav¹,

Sharma²,

Varma³

et al. 2023

Front. Microbiol.

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Micronutrient deficiency is a serious health issue in resource-poor human populations worldwide, which is responsible for the death of millions of women and underage children in most developing countries. Zinc (Zn) malnutrition in middle- and lower-class families is rampant when daily calorie intake of staple cereals contains extremely low concentrations of micronutrients, especially Zn and Fe. Looking at the importance of the problem, the present investigation aimed to enhance the growth, yield, nutrient status, and biofortification of wheat crop by inoculation of native zinc-solubilizing Bacillus spp. in conjunction with soil-applied fertilizers (NPK) and zinc phosphate in saline soil. In this study, 175 bacterial isolates were recovered from the rhizosphere of wheat grown in the eastern parts of the Indo-Gangetic Plain of India. These isolates were further screened for Zn solubilization potential using sparingly insoluble zinc carbonate (ZnCO3), zinc oxide (ZnO), and zinc phosphate {Zn3(PO4)2} as a source of Zn under in vitro conditions. Of 175 bacterial isolates, 42 were found to solubilize either one or two or all the three insoluble Zn compounds, and subsequently, these isolates were identified based on 16S rRNA gene sequences. Based on zone halo diameter, solubilization efficiency, and amount of solubilized zinc, six potential bacterial strains, i.e., Bacillus altitudinis AJW-3, B. subtilis ABW-30, B. megaterium CHW-22, B. licheniformis MJW-38, Brevibacillus borstelensis CHW-2, and B. xiamenensis BLW-7, were further shortlisted for pot- and field-level evaluation in wheat crop. The results of the present investigation clearly indicated that these inoculants not only increase plant growth but also enhance the yield and yield attributes. Furthermore, bacterial inoculation also enhanced available nutrients and microbial activity in the wheat rhizosphere under pot experiments. It was observed that the application of B. megaterium CHW-22 significantly increased the Zn content in wheat straw and grains along with other nutrients (N, P, K, Fe, Cu, and Mn) followed by B. licheniformis MJW-38 as compared to other inoculants. By and large, similar observations were recorded under field conditions. Interestingly, when comparing the nutrient use efficiency (NUE) of wheat, bacterial inoculants showed their potential in enhancing the NUE in a greater way, which was further confirmed by correlation and principal component analyses. This study apparently provides evidence of Zn biofortification in wheat upon bacterial inoculation in conjunction with chemical fertilizers and zinc phosphate in degraded soil under both nethouse and field conditions.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Zinc-solubilizing Bacillus spp. in conjunction with chemical fertilizers enhance growth, yield, nutrient content, and zinc biofortification in wheat crop

Yadav¹,

Sharma²,

Varma³

et al. 2023

Front. Microbiol.

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“…MMuG crop sequence exhibited 28.65% and 34.91% higher organic carbon and available N as compared to preexperiment levels which were 0.36 % OC and 115.22 kg ha − 1 available N. This revealed that continuous growing of pulses and incorporating their residue enriches the soil as well as brings pH towards neutrality. An increase in soil health in the form of higher organic carbon by the cultivation of a pulse crop was previously studied by different researchers (Beri et al 1989;Kharub et al 2003;Singh and Sidhu 2014;Tripathi et al 2019;Singh et al 2020). Growing green gram, cowpea, and vegetable pea increased the organic carbon content by 42.89%, 16.38%, and 4.57 %, respectively in a span of eight years (Tripathi et al 2019).…”

Section: Discussionmentioning

confidence: 98%

Environmentally sound alternative cropping systems for rice–wheat systems in North West India

Tripathi

Karnam

Meena

2022

Theor Appl Climatol

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Continuous cultivation of Rice-Wheat Cropping System (RWCS) in Indo-Gangetic Plains of India is showing declining factor productivity coupled with many environmental problems. Diversifying the RWCS is one of the environmental friendly options for sustaining food production.Four crop rotations involving maize and sorghum in summer, wheat/ potato/ mustard in winter followed by short duration green gram in late spring were studied to identify the most productive and economic combination from 2017 to 2020. Ranking of treatments by Tukey's test of signi cance indicated that the maize-potato-wheat (16.49 t ha-1) combination was best in terms of system productivity calculated in terms of wheat equivalent yield (WEY). Maize-wheat-green gram crop sequence was most pro table by having higher Land Use E ciency (LUE=87.67%) and net return (NR=1577.1 $ha-1). The gross margin comparison revealed that maize-based crop sequences earned higher gross returns (23.17%), net return (93.66%), and B: C ratio (23.7%) than sorghum-based crop sequences. Soil health parameters were improved under the maize-mustard-green gram system, which increased the organic carbon content by 28.65% and available N by 34.91%. Adoption of alternate cropping sequences instead of rice-wheat, in the Indo-Gangetic Plains of India could be more sustainable, pro table, and environment friendly.

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“…A systemic study on the effect of medium-term conservation practices on soil quality of semiarid and hot climate (northwestern IGP) under rice-mustard of cropping system was performed by Das et al (2021). However, a cropping system-based study in Lucknow region of India (mid-IGP) revealed that mustard-ricebased system had a more detrimental effect on soil quality (0.727) than lentil-rice (0.844), wheat-rice (0.780), potatogreen gram-rice (0.818) and wheat-green gram-pearl millet (0.818) cropping system with total culturable fungi, pH, water holding capacity and total carbon as key indicators (Singh et al, 2020). Basak et al (2015) reported better correlatability of chemical and biological attributes of ricepotato-sesame cropping system with equivalent rice yield across three soil orders (Inceptisol, Entisol and Alfisol) of subtropical eastern India, where dehydrogenase activity along with cation exchange capacity was selected as a best possible quality estimator.…”

Section: Discussionmentioning

confidence: 99%

Indicators of soil quality and crop productivity assessment at a long‐term experiment site in the lowerIndo‐Gangeticplains

Ghorai

Biswas

Purakayastha

et al. 2022

Soil Use and Management

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Deterioration of soil quality under resource-intensive modern agriculture in the face of global climate change poses a huge risk to food security. Because of the complex nature, estimators of soil quality often rely upon a limited set of soil attributes, along with statistical data reduction techniques, for developing quality indices, whilst overlooking biological aspects and regional climatic variability. This study screened the most suitable soil quality indexing approaches for a rice-oilseed-based cropping system in the lower Indo-Gangetic plains (IGP).For this, surface soil samples (0-15 cm) were collected from an ongoing longterm fertilizer experiment with a rice-mustard-sesame cropping system in the IGP. The following treatments were assessed for their effect on soil quality: T 1control, T 2 -NPK (recommended NPK doses), T 3 -NPKG (NPK + in situ green manuring), T 4 -NPKGB (NPK + in situ green manuring + biofertilizer) and T 5 -NPKF (NPK + farm yard manure FYM). We found that total organic carbon (TOC), βglucosidase, CaCl 2 extractable S, alkaline KMnO 4 oxidizable N, activity of urease, amidase enzyme and mean weight diameter (MWD) were sensitive key indicators of soil quality. The NPKF treatment maintained the highest soil quality status (0.80-0.91), both under productivity and environmental protection goals, owing to the availability of decomposable carbon. Regression analysis showed a better agreement of equivalent rice yield with expert opinion (EO; R 2 = 0.89) than principal component analysis (PCA; R 2 = 0.76). Finally, we found that the expert opinion approach with the nonlinear scoring function was the best tool for soil quality assessment of the region.

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Cropping systems influence microbial diversity, soil quality and crop yields in Indo-Gangetic plains of India

Cited by 22 publications

References 51 publications

Zinc-solubilizing Bacillus spp. in conjunction with chemical fertilizers enhance growth, yield, nutrient content, and zinc biofortification in wheat crop

Zinc-solubilizing Bacillus spp. in conjunction with chemical fertilizers enhance growth, yield, nutrient content, and zinc biofortification in wheat crop

Environmentally sound alternative cropping systems for rice–wheat systems in North West India

Indicators of soil quality and crop productivity assessment at a long‐term experiment site in the lowerIndo‐Gangeticplains

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