Conservation tillage and optimal water supply enhance microbial enzyme (glucosidase, urease and phosphatase) activities in fields under wheat cultivation during various nitrogen management practices

Sharma, Pankaj; Singh, Geeta; Singh, Rana Pratap

doi:10.1080/03650340.2012.690143

Cited by 35 publications

(13 citation statements)

References 37 publications

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“…Blanco-Canqui and Ruis [49] showed that converting from MP to NT improved topsoil AS by maintaining crop residue on the soil surface, reducing soil disturbance, mitigating near surface soil temperature fluctuations and reducing the frequency and magnitude of wet-dry and freeze-thaw cycles. Similarly, Sharma et al [52] and Das et al [53] reported NT increased topsoil SOM and biological activity which improved both formation and preservation of soil aggregates [3]. The absence of severe topsoil compaction under NT can also be attributed to the cumulative effect of shanks attached to NT seeders which penetrate to a depth of approximately 10-cm and can disrupt near-surface soil compaction [54,55]; and to a rearrangement of soil particles and aggregates by several near-surface soil processes and decreased traffic-induced compaction.…”

Section: Discussionmentioning

confidence: 90%

Tillage Intensity Effects on Soil Structure Indicators—A US Meta-Analysis

2020

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Tillage intensity affects soil structure in many ways but the magnitude and type (+/−) of change depends on site-specific (e.g., soil type) and experimental details (crop rotation, study length, sampling depth, etc.). This meta-analysis examines published effects of chisel plowing (CP), no-tillage (NT) and perennial cropping systems (PER) relative to moldboard plowing (MP) on three soil structure indicators: wet aggregate stability (AS), bulk density (BD) and soil penetration resistance (PR). The data represents four depth increments (from 0 to >40-cm) in 295 studies from throughout the continental U.S. Overall, converting from MP to CP did not affect those soil structure indicators but reducing tillage intensity from MP to NT increased AS in the surface (<15-cm) and slightly decreased BD and PR below 25-cm. The largest positive effect of NT on AS was observed within Inceptisols and Entisols after a minimum of three years. Compared to MP, NT had a minimal effect on soil compaction indicators (BD and PR) but as expected, converting from MP to PER systems improved soil structure at all soil depths (0 to >40-cm). Among those three soil structure indicators, AS was the most sensitive to management practices; thus, it should be used as a physical indicator for overall soil health assessment. In addition, based on this national meta-analysis, we conclude that reducing tillage intensity improves soil structure, thus offering producers assurance those practices are feasible for crop production and that they will also help sustain soil resources.

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Section: Discussionmentioning

confidence: 90%

Tillage Intensity Effects on Soil Structure Indicators—A US Meta-Analysis

2020

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“…Our results were supported by the results of Zhang et al, who found that ST can stimulate the formation and preservation of aggregates 55 . However, under CT, due to excessive tillage, no crop straw was covered on the surface soil, which greatly reduced the biomass and SOM produced www.nature.com/scientificreports/ by cover crop straw residues, disturbed soil aggregates, accelerated the SOM mineralization and depletion 56,57 . Therefore, CT was not conducive to the formation of aggregates and the improvement of soil structure 22,23 .…”

Section: Analysis Of Soil Microstructure Characteristics Based On Semmentioning

confidence: 99%

Tillage effects on soil properties and crop yield after land reclamation

Liu

Cao²,

Sun

et al. 2021

Sci Rep

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Tillage treatments have an important effect on soil microstructure characteristics, water thermal properties and nutrients, but little is known in the newly reclaimed cultivated land. For the reason, a long-term field study was to evaluate the tillage effects on soil physicochemical properties and crop yield in newly reclaimed cultivated land via the macroscopic and microscopic analysis. Three tillage treatments were tested: continuous conventional moldboard plow tillage (CT), sub-soiling/moldboard-tillage/sub-soiling tillage (ST) and no-tillage/sub-soiling/no-tillage (NT). Under CT, the microstructure was dominated by weakly separated plates structure and showed highest bulk density (BD) (1.49 g cm−3) and lowest soil organic matter (SOM) (3.68 g kg−1). In addition, CT reduced the capacity of soil moisture retention and temperature maintenance, resulting in aggregate structure deterioration and fragility. Unlike CT, the soil was characterized by moderately separated granular structure and highly separated aggregate structure under conservation tillage practice of ST and NT. NT was associated with the highest soil moisture content (20.42%), highest quantity of macroaggregates (> 0.25 mm) by wet-sieving (34.07%), and highest SOM (6.48 g kg−1) in the surface layer. Besides, NT was better able to regulate soil temperature and improved the values of geometric mean diameter. Under NT and ST, a stable soil structure with compound aggregates and pores was formed, and the maize yield was increased by 12.9% and 14.9% compared with CT, up to 8512.6 kg ha−1 and 8740.9 kg ha−1, respectively. These results demonstrated the positive effects of NT and ST on soil quality and crop yield in newly reclaimed cultivated land.

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“…These problems have posed an urgent need to develop eco-friendly, cost effective, and efficient plant nutrients that can be adopted as an alternative to CU by the farmers. The organic fertilizers (Sieling et al, 2006), biofertilizers (Ogut et al, 2005;Mikhailouskaya and Bogdevitch, 2009;Kundu et al, 2009;Kumar et al, 2010;Ramanjaneyulu et al, 2010), slow/controlled release fertilizers Hong-Tao et al, 2009;Patra et al, 2006;Eyvazi et al, 2010;Yang et al, 2011), and integrated nutrient management systems (INMS) (Sharma et al, 2013, Singh et al, 2011b are seen as possible alternatives to CU. No earlier study is available regarding entrapment of biofertilizers in organic matrix based on local agro-waste for production of entrapped biofertilizers.…”

Section: Discussionmentioning

confidence: 98%

Increase in Growth, Productivity and Nutritional Status of Wheat (Triticum aestivumL.) and enrichment in Soil Microbial Population Applied with Biofertilizers Entrapped with Organic Matrix

Kumar

Bauddh

Sainger

et al. 2014

Journal of Plant Nutrition

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2 To find effective alternatives to reduce the application of conventional urea (CU), a conventional biofertilizer (CB) preparation (charcoal mixed Azotobacter chroococcum and Bacillus subtilis) and the same biofertilizers entrapped in an organic matrix consisting of cow dung, rice bran, dried powder of neem leaves, and clay soil in 1:1:1:1 ratio and 25% (w/w) saresh (plant gum of Acacia sp.), named as super granules of biofertilizers (SGBF) were applied to cultivate wheat (Triticum aestivum L. cv. 'WH-711') in experimental plots. The results revealed that the efficacy of commercially available charcoal mixed biofertilizers could not prove as effective alternative to CU, whereas the same dose of biofertilizers entrapped in the organic matrix, SGBF, resulted in a significant increase in growth and productivity of wheat. It appears that SGBF prepared and applied in this study is an effective organic alternative to the urea for wheat cultivation in semi-arid subtropical agro-ecosystems.

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Conservation tillage and optimal water supply enhance microbial enzyme (glucosidase, urease and phosphatase) activities in fields under wheat cultivation during various nitrogen management practices

Cited by 35 publications

References 37 publications

Tillage Intensity Effects on Soil Structure Indicators—A US Meta-Analysis

Tillage Intensity Effects on Soil Structure Indicators—A US Meta-Analysis

Tillage effects on soil properties and crop yield after land reclamation

Increase in Growth, Productivity and Nutritional Status of Wheat (Triticum aestivumL.) and enrichment in Soil Microbial Population Applied with Biofertilizers Entrapped with Organic Matrix

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