Soil Organic Carbon, Carbon Sequestration, Soil Microbial Biomass Carbon and Nitrogen and Soil Enzymatic Activity as Influenced by Conservation Agriculture in Pigeonpea and Soybean Intercropping System

Kumar, Bhupander; Babalad, H. B.

doi:10.20546/ijcmas.2018.703.038

Cited by 14 publications

(3 citation statements)

References 11 publications

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“…This could be due to the high weed density at the critical crop growth stage, which out-competed with the crop for available moisture, nutrients, light and rooting space. The results similar to this present study were reported by Ganapathi et al [82] and Kumar et al [83] who recorded higher kernel yield with IWM than with the use of only advocated herbicides and single hand-weeded control due to less weed infestation. In the present investigation, there was an increase in corn yield and system CEY when employing zero tillage with crop residue retention (ZT(C)+SrR-ZT(M)+CR-ZT(Sr)+MS) and IWM followed by chemical weed control and herbicide rotation.…”

Section: Maize Grain Yield and System Productivity (Cotton Equivalent...supporting

confidence: 93%

“…Soil organic matter (SOM) is a crucial driver for microbial population and diversity, and can affect the microbial counts [83][84]. Rhizosphere Azospirillum (Azosp), Azotobacter (Azot), and total fungal (TF) population was higher in ZT(C)+SrR-ZT(M)+CR-ZT(Sr)+MS (Table 6 a), probably due to more addition of SOM through crop residues retention to support the microbial population.…”

Section: Microbial Populationmentioning

confidence: 99%

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Cumulative Impact of Herbicides and Tillage in Conservation Agriculture on Soil Microbiome, Fungal Diversity and Crop Productivity

Nthebere,

Prakash,

Bhimireddy

et al. 2024

Preprint

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In a diversified cropping system, the kinds of tillage methods and weed management practices significantly influence soil microbiome, which affects crop productivity. The synergetic impacts of such practices on soil microbiome in association with yield under diverse crop rotation with conservation agriculture (CA) have not been extensively explored thus far in Southern India. Thus, a CA experiment was undertaken to investigate the impact of tillage and weed management on soil microbiome and fungal diversity at 30 days after sowing (DAS) and tasseling stage (60 DAS) of maize (in the 8th crop cycle) and to monitor yield. Three tillage practices; T1:CT(C)-CT(M)-fallow(NSr), T2:CT(C)-ZT(M)-ZT(Sr) and T3:ZT(C) + SrR-ZT(M) + CR-ZT(Sr) + MS and weed control tactics involved; W1-Chemical weed control, W2-Herbicide rotation (in alternative year), W3- Integrated weed management (IWM) and W4-Single hand-weeded control were laid-out in split-plot design. Rhizosphere soil and rhizoplane samples were collected from the respective plots at 30 DAS after herbicides application and tasseling stage (60 DAS). Analysis for microbial population and fungal diversity, enzyme and microbial activities was done duly following standard procedures. The salient findings indicated; a decline in enzyme activities, microbial population, microbial activities at initial stages (30 DAS) due to impact of herbicides which later on increased by tasseling. These biological properties were higher under T3 and W4, followed by IWM except metabolic quotient (qCO2) which showed a decreasing trend relative to T1, T2 and W1, W2 at both sampling stages of maize. Kernel yield (KY) and System yield (SY) were enhanced by T3 and IWM, herbicides treated plots (W1 and W2) compared to T1, T2 and W4. Talaromyces flavus, a beneficially rhizosphere micro-inhabitant was identified under T3 in combination with IWM. Considering both crop productivity and soil biological assessment, T3 and IWM were considered the best treatment combinations among all others with SY (4453 kg ha− 1). These findings signify the importance of adopting reduced tillage (T3) and IWM to achieve sustainable biodiversity and food security. This will further help the farmers and the policy makers to deeply understand the effectiveness of developing sustainable and eco-friendly tillage practice and weed control strategy for improving soil health and bolstering sustained crop productivity.

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Section: Maize Grain Yield and System Productivity (Cotton Equivalent...supporting

confidence: 93%

Section: Microbial Populationmentioning

confidence: 99%

Cumulative Impact of Herbicides and Tillage in Conservation Agriculture on Soil Microbiome, Fungal Diversity and Crop Productivity

Nthebere,

Prakash,

Bhimireddy

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Ganapathi et al [122] also recorded higher kernel, harvest index and least weed dry weight with IWM compared to the use of only advocated herbicides and non-weeded treatments due to less weed infestation. Similar results were obtained by Kumar et al [123] who observed that when preemergence herbicide was applied followed by one rotary hoeing at 35 DAS led to increased grain yield. The results of Ahmad et al [124] concur with the ndings of this present investigation, who noticed that Nicosulfuron application and one hand weeding with a hoe at 15 DAS led to greater kernel yield, whereas the least kernel yield was obtained from non-weeded control.…”

Section: Crop Productivitysupporting

confidence: 89%

Cumulative Impact of Herbicides and Tillage on Soil Microbiome, Fungal Diversity and Crop Productivity under Conservation Agriculture

Nthebere,

Tata,

Bhimireddy

et al. 2024

Preprint

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In a diversified cropping system, the kinds of tillage methods and weed management choices adopted exert a significant influence on soil microbiome which has a bearing on crop productivity. The synergetic impacts of such practices on soil microbiome in association with yield under cotton-maize-Sesbania rostrata rotation with CA have not been extensively explored thus far in Southern India. Therefore, a 4-years CA experiment was undertaken to investigate the impact of tillage and weed management on soil microbiome and fungal diversity at 30 DAS and tasselling of maize, crop yield and identify a sustainable tillage and weed management which can provide nature-based solution. Three tillage practices; T1:CT(C)-CT(M)-fallow (NSr), T2:CT(C)-ZT(M)-ZT(Sr) and T3:ZT + R(C)-ZT + R(M)-ZT + R(Sr) and weed control tactics involved; W1-chemical weed control, W2-chemical (herbicide) rotation, W3- integrated weed management (IWM) and W4-non-weeded control laid out in split-plot design. Rhizosphere soil and rhizoplane samples were collected from the respective plots at 30 DAS after herbicides application and tasselling. Analysis for microbial population, enzyme and microbial activities viz., soil basal respiration (SBR), metabolic quotient (qCO2), microbial quotient (qMB), soil microbial biomass carbon (SMBC) and nitrogen (SMBN) was done duly following standard procedures. The rRNA gene sequencing with 18s was performed with rhizosphere soil and rhizoplane fungi isolated at tasselling. Yield was recorded at harvest. The salient findings indicated; a decline in enzyme activities, microbial population, microbial activities at initial stages (30 DAS) due to impact of herbicides which later on increased by tasseling except qCO2 which decreased. These biological properties were higher under T3 and non-weeded control followed by IWM except qCO2 which showed a decreasing trend relative to T1, T2 and W1, W2 at both sampling stages of maize. Kernel yield (KY) and System yield (SY) were enhanced by T3 and IWM, herbicides treated plots (W1 and W2) compared to T1, T2 and non-weeded control. Talaromyces flavus, beneficially rhizosphere soil inhabitant was identified in T3 in combination with IWM. Considering both crop productivity and soil biological assessment, T3 and IWM was considered as best treatment combination among all others with SY (4453 kg ha− 1). These findings signify the importance of adopting reduced tillage (T3) and IWM for the farmer while striving for Nature-based solution.

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Practices Contribute in Reducing the Emission of Greenhouse Gases

Ouda

Zohry

2022

Climate-Smart Agriculture

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Soil Organic Carbon, Carbon Sequestration, Soil Microbial Biomass Carbon and Nitrogen and Soil Enzymatic Activity as Influenced by Conservation Agriculture in Pigeonpea and Soybean Intercropping System

Cited by 14 publications

References 11 publications

Cumulative Impact of Herbicides and Tillage in Conservation Agriculture on Soil Microbiome, Fungal Diversity and Crop Productivity

Cumulative Impact of Herbicides and Tillage in Conservation Agriculture on Soil Microbiome, Fungal Diversity and Crop Productivity

Cumulative Impact of Herbicides and Tillage on Soil Microbiome, Fungal Diversity and Crop Productivity under Conservation Agriculture

Practices Contribute in Reducing the Emission of Greenhouse Gases

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