K. N. Tiwari

ORCID: 0000-0003-0014-914X
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Research Areas
  • Hydrology and Watershed Management Studies
  • Soil erosion and sediment transport
  • Irrigation Practices and Water Management
  • High-pressure geophysics and materials
  • Hydrology and Sediment Transport Processes
  • Flood Risk Assessment and Management
  • Greenhouse Technology and Climate Control
  • Astro and Planetary Science
  • Soil and Unsaturated Flow
  • Plant Water Relations and Carbon Dynamics
  • Geological and Geochemical Analysis
  • Agricultural Economics and Practices
  • Leaf Properties and Growth Measurement
  • Groundwater flow and contamination studies
  • Rice Cultivation and Yield Improvement
  • Dam Engineering and Safety
  • earthquake and tectonic studies
  • Light effects on plants
  • Soil Geostatistics and Mapping
  • Crop Yield and Soil Fertility
  • Forest ecology and management
  • Groundwater and Watershed Analysis
  • Agricultural Science and Fertilization
  • Phosphorus and nutrient management
  • Climate change impacts on agriculture

Indian Institute of Technology Kharagpur
2014-2024

Indian Institute of Technology Indore
2011

PotashCorp (Canada)
2005

Kerala Agricultural University
1999

Abstract The synthesis of glycogen‐ g ‐polyacrylamide (Gly‐ ‐PAM) was carried out by a ceric ion‐induced solution polymerization technique. Six grades graft copolymers were synthesized the variation catalyst and monomer concentrations. These characterized intrinsic viscosity measurements, FTIR spectroscopy, X‐ray diffraction techniques. Flocculation performance these done in kaolin suspension. Of above grades, copolymer Gly‐ ‐PAM 5, which has longer PAM chains, showed best flocculation...

10.1002/app.25043 article EN Journal of Applied Polymer Science 2006-10-26

Crop fertilisation with potassium in rainfed agriculture India is not practised, merely on the assumption that Indian soils are rich and crops do need external K supply. However, under continuous cropping regions, huge crop removals reported, up to 150–200 kg/ha annually, depending upon amount distribution of rainfall biomass production. Thus, most essentially deplete soil reserves. The present study evaluates reserves diverse production systems categorises based different fractions....

10.1071/sr07024 article EN Soil Research 2007-01-01

Abstract Waste polyethylene (WPE) was segregated from the municipality solid waste, cleaned, dried, and chopped into pieces, then processed in a Brabender Plasticorder using melt mixing technique. Blends of WPE virgin were prepared various proportions under optimized process conditions. Of blend studied, 70/30 WPE/low density (LDPE) 50/50 WPE/high showed better mechanical properties hence selected for further modification involving electron beam irradiation. Aforementioned blends exposed to...

10.1002/app.23970 article EN Journal of Applied Polymer Science 2006-04-25

The experiment was carried out to study the response of Sapota (Achraszapota) crop under drip irrigation and plastic mulch. Three levels water applied through drip, ring basin method in combination with mulch were experimented five replications on plants. Reference evapotranspiration estimated using FAO-56 Penman Monteith approach. requirement reference data co-efficient for different growth stages. at 60%, 80% 100% requirement. Irrigation intervals 2 5 days respectively treatments. varies...

10.4172/2168-9768.1000116 article EN cc-by Irrigation & Drainage Systems Engineering 2014-01-01

Vertical accuracy of the processed Shuttle Radar Topographic Mission (SRTM) digital elevation model (DEM) was evaluated using spot height as well reference DEM. Terrain dependency error also explored in relation to elevation, slope and aspect terrain. The positive mean (6.77 ± 1.79 m) indicated that SRTM DEM slightly underestimating this pattern gradually increases towards higher elevation. observed root square (RMSE) (27.58 4.22 for region do not fulfill 16 m RMSE specification mission....

10.1080/10106040903302931 article EN Geocarto International 2009-09-30

Field experiments using lysimeters were conducted in sub-humid climatic condition to estimate water balance parameters, regional crop coefficient development and evaluate yield response of okra under subsurface drip (SSD) irrigation with without plastic mulch.In the year 2016, total evapotranspiration SSD mulch was 403 512 mm respectively, whereas 2017 it 363 468 respectively.Average 0.31, 0.42, 0.68, 0.77 0.48 measured condition, 0.51, 0.72, 0.92, 0.93 0.53 mulch.High minimum observed...

10.18520/cs/v115/i12/2249-2258 article EN Current Science 2018-12-25

10.1007/s12524-009-0005-y article EN Journal of the Indian Society of Remote Sensing 2009-03-01

This paper compares the composite and distributed curve number (CN) techniques in computation of runoff from a hypothetical watershed 100×100 cells natural medium-sized agricultural Tarafeni located West Bengal, India. To this end, remote sensing (RS) satellite digital data 1989 2000 were used for land use cover classification using maximum likelihood classifier algorithm supervised CN-generation. Runoff was estimated each grid by distributed-CN approach averaged whole weighted-runoff...

10.1061/(asce)he.1943-5584.0000651 article EN Journal of Hydrologic Engineering 2012-05-20

Abstract Field experiments were conducted on the lateritic sandy loam soil and sub-humid climate of Kharagpur, West Bengal, India during 2014-2018 for two consecutive crop seasons to determine optimum water requirement Banana under drip irrigation with without plastic mulch. Reference evapotranspiration was estimated using FAO-56 Penman-Monteith approach. The dual coefficient approach used improve estimates (K c ) values treatments black mulch Plants treated consume about 12% less main 22%...

10.1088/1755-1315/344/1/012024 article EN IOP Conference Series Earth and Environmental Science 2019-10-01
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