Ram B. Khadka

ORCID: 0000-0002-1810-7493
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About
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Research Areas
  • Plant Pathogens and Fungal Diseases
  • Plant-Microbe Interactions and Immunity
  • Plant Virus Research Studies
  • Rice Cultivation and Yield Improvement
  • Nematode management and characterization studies
  • Plant Disease Management Techniques
  • Agricultural Economics and Practices
  • Plant Disease Resistance and Genetics
  • Crop Yield and Soil Fertility
  • Mycorrhizal Fungi and Plant Interactions
  • Genetic and Environmental Crop Studies
  • Agricultural pest management studies
  • Plant responses to water stress
  • Fish Ecology and Management Studies
  • Plant Pathogens and Resistance
  • Agronomic Practices and Intercropping Systems
  • Marine and fisheries research
  • Legume Nitrogen Fixing Symbiosis
  • Bacteriophages and microbial interactions
  • Plant pathogens and resistance mechanisms
  • Fish Biology and Ecology Studies
  • Banana Cultivation and Research
  • Agricultural Systems and Practices
  • Genetics and Plant Breeding
  • Weed Control and Herbicide Applications

Nepal Agricultural Research Council
2016-2025

NLR Nepal
2024

The Ohio State University
2019-2022

College of Wooster
2021-2022

Tribhuvan University
1990

University of Delhi
1986

The world faces two enormous challenges that can be met, at least in part and low cost, by making certain changes agricultural practices. There is need to produce enough food fibre for a growing population the face of adverse climatic trends, remove greenhouse gases avert worst consequences global climate change. Improving photosynthetic efficiency crop plants help meet both challenges. Fortuitously, when plants' roots are colonized root endophytic fungi genus Trichoderma, this induces...

10.1111/jam.14368 article EN Journal of Applied Microbiology 2019-07-04

In the past half dozen years, farmers and professionals working with them in several Asian African countries have begun adapting extrapolating what they learned from about system of rice intensification (SRI) to a range other crops - finger millet, wheat, sugarcane, tef, oilseeds such as mustard, legumes soya kidney beans, various vegetables is being called crop (SCI). As rice, principles early healthy plant establishment, reducing competition between plants, increased soil organic matter,...

10.1186/2048-7010-3-4 article EN cc-by Agriculture & Food Security 2014-02-25

With continually increasing demand for food accompanied by the constraints of climate change and availability quality soil water, world's farmers are challenged to produce more per hectare with less fewer agrochemical inputs if possible. The ideas methods system rice intensification which is improving irrigated production now being extended/adapted many other crops: wheat, maize, finger millet, sugarcane, tef, mustard, legumes, vegetables, even spices. Promoting better root growth enhancing...

10.1080/14735903.2017.1402504 article EN cc-by-nc-nd International Journal of Agricultural Sustainability 2017-11-20

<ns4:p>Background <ns4:italic>Trichoderma</ns4:italic> spp. hold significant potential as biocontrol agents in agriculture due to their antagonistic properties against plant pathogens. The study aimed characterize and identify isolates from rhizospheric regions of vegetable crops. Methods In this study, were collected soil samples crops different ecological zones selected for comprehensive morphological molecular characterization. visually assessed colony color, growth pattern, aerial...

10.12688/f1000research.153701.2 preprint EN cc-by F1000Research 2025-01-09

<ns3:p>Background <ns3:italic>Trichoderma</ns3:italic> spp. hold significant potential as biocontrol agents in agriculture due to their antagonistic properties against plant pathogens. The study aimed characterize and identify isolates from rhizospheric regions of vegetable crops. Methods In this study, were collected soil samples crops different ecological zones selected for comprehensive morphological molecular characterization. visually assessed colony color, growth pattern, aerial...

10.12688/f1000research.153701.3 preprint EN cc-by F1000Research 2025-03-05

Many benefits of Trichoderma inoculation for improving crop production have been documented, including growth and yield enhancement the alleviation biotic abiotic stresses. However, because rice is usually cultivated under continuous flooding that creates anaerobic soil conditions, this limits these beneficial fungi. Cultivating with methods System Rice Intensification (SRI) provides plants a more favorable environment their colonization by microbes in aerobic SRI management contains organic...

10.7717/peerj.5877 article EN cc-by PeerJ 2019-01-11

Potential synergy between anaerobic soil disinfestation (ASD) and Trichoderma spp. in suppression of Rhizoctonia root rot radish was evaluated. A split-plot design with three replications used; main plots were harzianum T22, asperellum NT25 a non- control. Subplots ASD carbon sources wheat bran, molasses, chicken manure, mustard greens two non-amended controls: (covered flooded) aerobic (not covered or flooded). Carbon solani inoculant mixed soil, placed pots, flooded, followed by drenching...

10.3389/fsufs.2021.645736 article EN cc-by Frontiers in Sustainable Food Systems 2021-03-25

Abstract Fungicide application is an effective management option to control late blight of potato (caused by Phytophthora infestans ). Field experiments were conducted evaluate the efficacy recently introduced and previously used fungicides on yields in western plains Nepal 2015 2016 crop seasons. Fungicides a non‐treated (NTC) replicated three times randomized block design planted with susceptible cultivar Cardinal. Chlorothalonil, copper oxychloride, dimethomorph, fenamidone + mancozeb,...

10.1111/jph.12886 article EN Journal of Phytopathology 2020-03-16

Background . Fresh vegetables such as tomato should have low microbial population for safe consumption and long storage life. The aerobic bacterial count (ABC) coliform (CBC), yeast, mold are the most widely used indicators in fresh which be lower than 4 log CFU g −1 consumption. stages of supply chain, postharvest handling methods, crop varieties had significant effects on population. ABC, CBC, were significantly highest (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...

10.1155/2017/7148076 article EN cc-by BioMed Research International 2017-01-01

Rice False Smut (RFS) caused by Ustilaginoidea virens is a major emerging disease of rice due to expanded area hybrid cultivars, increasing use nitrogenous fertilizers and change in climate. Due the incidences this across globe, there pressing need develop techniques for false smut management. The application fungicides with high efficiency, low toxicity, residue currently best option control RFS. Therefore, current research was conducted determine effectiveness manage experiments were...

10.1016/j.heliyon.2024.e34151 article EN cc-by-nc Heliyon 2024-07-01

<ns4:p>Background <ns4:italic>Trichoderma</ns4:italic> spp. hold significant potential as biocontrol agents in agriculture due to their antagonistic properties against plant pathogens. The study aimed characterize and identify isolates from rhizospheric regions of vegetable crops. Methods In this study, were collected soil samples crops different ecological zones selected for comprehensive morphological molecular characterization. visually assessed colony color, growth pattern, aerial...

10.12688/f1000research.153701.1 preprint EN cc-by F1000Research 2024-09-24

Abstract Background: Despite Nepal's considerable progress towards sustainable development goals in recent years, much more needs to be done address the key challenges. Agriculture plays an indispensable role trajectory, but Nepal faces complex challenges its agricultural landscape. Addressing these requires a coordinated effort and use of robust scientific evidence support decision making - knowledge on effectiveness crop varieties will help direct resources where they are needed most....

10.31220/agrirxiv.2024.00228 article EN public-domain agriRxiv 2024-01-26

Experiments were conducted to evaluate potential functional and mechanistic differences in the suppression of Sclerotinia sclerotiorum S. minor root-knot nematodes muck soils by anaerobic soil disinfestation (ASD) using different carbon source amendments. Volatile compounds produced during ASD amended with molasses, wheat bran, or mustard greens at 20.2 Mg/ha a 2% ethanol solution significantly reduced mycelial growth number sclerotia both spp. compared control. In soils, acetic butyric...

10.1094/phyto-10-19-0386-r article EN other-oa Phytopathology 2020-01-14

Numbers of on-farm experiments were conducted to assess the performance rice ( var. Sabitri) cultivated using System Rice Intensification (SRI) with varied age seedlings and planting geometry in four VDCs Kailali, far western Nepal, under aegis Farmers’ Field School (FFS) during rainy season 2010. The experiment consisted groups; 8, 15, 22 29-days geometry; 15x15cm2, 20x20cm2, 25x25cm2 30x30cm2 planted FFSs. Parameters such as number tillers per hill, effective /m2, 1000 seed weight (TGW)...

10.3126/njst.v13i2.7706 article EN Nepal Journal of Science and Technology 2013-03-08

The characteristics of 41 native Trichoderma isolates collected from diverse microclimatic domains in Nepal and two Ohio their efficacy biocontrol plant diseases were assessed. Species assignment was based on a maximum likelihood phylogenetic analysis constructed concatenated dataset using the internal transcribed spacer region ( ITS), translocation elongation factor tef1), RNA polymerase II subunit rpb2). Most n = 37) assigned to Viride clade identified as T. asperellum or asperelloides,...

10.1094/phytofr-08-21-0051-r article EN cc-by-nc-nd PhytoFrontiers™ 2022-03-08

Participatory action research was conducted in Luinyata VDC of Bajhang district during main rice-growing season 2012 to evaluate the effects cultivation practices rice varieties. The experiment factorial randomized complete block design, where two methods cultivations: System intensification (SRI) and conventional transplanting (CT) 3 different varieties: Khumal-4, Thapachini Hansaraj Basmati were evaluated. Data collected on grain yield, number tillers, panicle length filled unfilled grains...

10.3126/aej.v15i0.19809 article EN Deleted Journal 2014-06-01

Abstract Anaerobic soil disinfestation (ASD) is a pre-plant modification method in which amended with easily degradable organic matter followed by saturation water and covering plastic sheeting for several weeks to create anaerobic conditions. This process promotes stale seedbed conditions encourages seed germination. In time, changes physical, chemical, biological kill the weed seeds seedlings. has been used suppress soilborne plant pathogens. Studies indicate that ASD can contribute...

10.1093/jipm/pmab027 article EN cc-by Journal of Integrated Pest Management 2021-01-01
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