A5101648250- Insect Resistance and Genetics
- Plant Virus Research Studies
- Insect Pest Control Strategies
- Insect-Plant Interactions and Control
- Water resources management and optimization
- Agricultural pest management studies
- Irrigation Practices and Water Management
- Soil Management and Crop Yield
- Agricultural Research and Practices
- Southeast Asian Sociopolitical Studies
- Water Systems and Optimization
- Plant Disease Management Techniques
- Genetic diversity and population structure
- Agricultural Practices and Plant Genetics
- Rabbits: Nutrition, Reproduction, Health
- Sustainability and Climate Change Governance
- Oil Palm Production and Sustainability
- Corruption and Economic Development
- Geography and Environmental Studies
- Insect Utilization and Effects
- Soil erosion and sediment transport
- Plant Ecology and Soil Science
- Potato Plant Research
- Cambodian History and Society
- Agricultural and Food Sciences
Nepal Agricultural Research Council
1970-2024
Kobe University
2004-2009
Brazilian Agricultural Research Corporation
1983-1987
American Institute for Economic Research
1982
Many insect pests, including the brown planthopper (BPH), undergo windborne migration that is challenging to observe and track. It remains controversial about their patterns largely unknown regarding underlying genetic basis. By analyzing 360 whole genomes from around globe, we clarify sources of worldwide BPHs illuminate a landscape BPH showing East Asian populations perform closed-circuit journeys between Indochina Far East, while Malay Archipelago South Asia one-way Indochina. We further...
Saabunud / Received 19.06.2020 ; Aktsepteeritud Accepted 18.09.2020 Avaldatud veebis Published online Vastutav autor Corresponding author: Kalika Prasad Upadhyay e-mail: kalikaupadhyay@yahoo.com
The maize borer, Chilo partellus (Swinhoe), is one of the major biotic constrains reducing productivity in Nepal. Summer infested mainly by it rather than other insect species National Maize Research Program (NMRP)-Rampur farm was considered as a potential spot for this study where summer highly every year pest. This conducted during summers 2004 and 2005 with an objective assessing loss maize. A variety, Arun-2, used study. Yield pest estimated obtaining yield difference between chemically...
Abstract The brown planthopper (BPH), Nilaparvata lugens , is a serious migratory rice pest, which distributed in the broad area of tropical and temperate Asian-Pacific region. However, we know little about key aspects regarding its evolution such as how they diverged dispersed worldwide. By resequencing analyzing 358 BPH genomes from 92 populations across world, uncover genetic relationships among their worldwide history global dispersal. We recovered five groups representing major...
Abstract availalble with the full text.
Small reservoirs, called tanks, are a part of traditional water harvesting methods in the semiarid tropics India and many other countries. Though considerable investment is being planned to construct more them, no investigation has taken place discover most efficient design these tanks. This paper proposes nonlinear optimization model It is, sense, ‘appropriate technology’ because approach combined with newer techniques improve irrigation systems without capital intensive or high technology...
South American tomato leaf miner, Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) is an invasive insect pest of (Lycopersicon esculentum Miller) both in field and controlled environment conditions. T. native to America, it was detected first time Nepal from Kathmandu during May, 2016. Survey conducted at 46 locations 31 districts terai mid hills February June 2018. 45 30 surveyed. which Kathmandu, Lalitpur, Bhaktapur, Kavre Dhading 2016 has now been spread into 33 across the Nepal....
Rice productivity is greatly affected by various biotic and abiotic stresses. Insect-pests are one of the major bioticconstraints to cause significant losses in rice production. Brown planthopper (BPH), Nilaparvata lugens Stål, isthe most serious insect-pest Asia where world produced. Controlling insects usingchemicals already proven detrimental not only environment but also human health. Integrated PestManagement (IPM) best approach control insect pests. Host plant resistance principal...
From April to July 2019, an experiment was conducted in Khumaltar, Lalitpur (27°39.312′N, 85° 19.586′E, and 1322 m above sea level) assess the effectiveness of plant materials on maize weevil (Sitophilus zeamais Motsch.) control under laboratory conditions (maintained room temperature 28.5 ± 2°C, relative humidity 72 5%) treatments were Acorus calamus (rhizome powder) @ 5 g·kg−1, Melia azadirach seed) Curcuma domestica mustard oil 2 mL·kg−1, Gingiber officinalis rice husk ash untreated...
Red ant is the most destructive insect pest of potato tubers in field. Utilization varietal resistance best option to control pest. The five released and nine promising genotypes were evaluated against red (Dorylus orientalis Westwood) under natural infestation prone Potato was based on tuber damage index value (0.00 1) which calculated bases percentage damaged number injuries per kilogram made by Based results combined data, levels categorized be less (TDI ranging from 0.35 0.49),...
Abstract Mechanisms of host plant resistance against insect pests can be manifold. Resistance screenings generally use single target pests, but the thus screened may not always specific to species. We conducted a test for non‐specific in indica rice varieties with genes brown planthopper (BPH), by using Indian meal moth, Plodia interpunctella. The system was very simple, and only required non‐pest moth reared on flour. compared survival rate, developmental period adult weight three...
ABSTRACT traditional method of irrigating in the semi-arid tropics (especially India) is collecting monsoon precipitation small reservoirs, called tanks, to supply irrigation water for dry season. Though there considerable investment being proposed develop more tank systems and improve those that already exist, have been no studies evaluating their design operation efficiency. This project studied two these detail compare potential overall utilization efficiency (WUE) with actual WUE. The...
Three different plant products diets – i) neem (Azadirachta indic A. Juss) oil mixed diet (neem @ 80 ml/kg of normal diet), ii) seed powder g/kg diet) and iii) custard apple (Annona reticulata L.) (custard were separately fed to mature rats (Rattus rattus) with single dose feeding g per pair in a day on 13th week-age during the experimenting years, 2012/013 2013/014. In control group only without constituents fed. Sterility test rat was conducted up 38 28 weeks-age first second year,...
Local democracy is the foundation or cornerstone of democratic system. Accountability begins from family. virtue duty that denotes honesty and responsible undertakings. an explanation one's actions. The Government Nepal (GoN) development partners (DPs) are active seriously involved in creating conducive environment for social accountability local governance within Nepal. In long absence (almost 12 years) elected representatives Bodies (LBs), community program (LGCDP) subsequent such as LGAF...
Tanks, small reservoirs to catch rain during monsoon seasons, are traditional water harvesting methods in India. Though major investment is being planned for more tank construction, no one has investigated the optimal design, size, and placement. This paper combines tools of systems analysis with methodology design thereby saving considerable construction costs improving use efficiency. Problems semi-arid tropics examined. Traditional also covered. The optimization problems designing a...