TAILIEUCHUNG - Effect of weather parameters on population dynamics of mustard aphid

To assess the impact of weather parameters on mustard aphid, a field experiment was conducted during Rabi season 2011-12 to 2017-18 at Main Castor-Mustard Research Station, . Agricultural University, Sardarkrushinagar. The experiment was laid down in randomized block design consisting five varietal treatments viz. BSH-1, GSC-6, T-27, GS1 and GDM-4 with three replications. The crop was sown during 24th – 30th Sept as timely sown crop and 15th – 21st Oct as late sown crop. The results revealed that the maximum incidence of aphid was observed in late sown crop as compared to early sown crop. The correlation study between aphid population and weather parameters revealed that the maximum temperature (Tmax), minimum temperature (Tmin) and growing degree days (GDD) had significant negative correlation with aphid population. Morning relative humidity, evening relative humidity, sunshine hours and wind speed did not have significant correlation with aphid population. The regression models were developed with Tmax and GDD could explain 72 to 87 percent variation in aphid population in different cultivars. | Effect of weather parameters on population dynamics of mustard aphid

• Sinh học
• Mustard and weather
• Weather parameters
• Population dynamics
• Mustard aphid
• Different cultivars
• Aphid infestation
• Sowing time
• Mustard (Brassica juncea L )
• Influence of weather
• Spread of aphid in Mustard
• Rapeseed mustard
• Trends of area
• Productivity of rapeseed
• Different districts
• Controlled pollination
• Seed viability
• Seed germination
• Nerium cultivars (Nerium oleander L )
• Different breeding systems in nerium cultivars
• Different breeding systems
• Conventional tillage
• Zero tillage
• Six different cultivars
• Six different cultivars of wheat
• Soil aggregates
• Storage and cultivars
• Different cultivars of mango
• Storage studies
• Quality parameters
• Nectar prepared
• Vegetative and biochemical parameters
• Mandarin cultivars
• Different root stocks
• Commercial mandarin cultivars
• Rootstock of rough lemon
• Dry matter accumulation
• Days after sowing
• Seasonal variation
• Cowpea cultivars (Vigna unguiculata L walp )
• Different parts of cowpea cultivars
• Varied seasons
• Physical properties
• Cabbage etc
• Different levels of vermicompost
• Soil physical properties of two cultivars
• Two cultivars of cabbage
• Growth behavior of wheat cultivars
• Growth behavior
• Wheat cultivars
• Different irrigation levels
• Student’s instructional farm
• Varietal evaluation
• Different strawberry cultivars
• Strawberry cultivars for growth
• Quality characters
• Temperate conditions
• Gladiolus (Gladiolus hybridus Hort )
• Different holding solutions
• Hybrid cultivars
• Relative performance of parent
• Post harvest attributes
• Response to different holding solutions
• Pollen sources on quality characteristics
• Quality characteristics
• Different cultivars of date palm
• Haryana conditions
• Different pollinizers
• Grain yield
• Soil moisture
• Rice cultivars under different methods
• Tillage operation
• Performance of rice cultivars
• Vigour index
• Germination studies in different guava
• Different guava
• Germination studies
• Different guava cultivars
• Postharvest studies
• Rice cultivars
• Rice cultivars (Oryza sativa L
• Iron fortification
• Yield and post harvest studies
• Onion cultivars
• Storage life
• Onion cultivars on storage life
• Maximum per cent of sprouting
• Four months
• Kodo millet
• Kutki millet and quality attributes
• Quality attributes
• Nutritional composition of different cultivars
• Assessment of nutritional composition
• Genetic fidelity
• Different cultivars of gerbera
• Gerbera (Gerbera jamesonii Bolus)
• DNA based molecular marker RAPD
• Storage and concentration
• Different mango cultivars
• Physico chemical characteristics
• Squash prepared
• Storage period
• Biochemical studies
• Lucknow 49
• Ascarbic acid
• Guava under eastern
• Reducing sugar
• Non reducing sugar
• Titrable acidity
• Guava cheese from different cultivars
• Preparation of guava cheese
• Root knot nematode
• Meloidogyne incognita
• Pot culture condition
• Different marigold cultivars against
• College of agriculture
• Pollen morphology
• Pollen viability
• Sex ratio
• Different cultivars of litchi
• Germination and their
• Cucurbita moschata Duch ex Poir
• Study on heritability
• Genetic advance
• Yield contributing characters
• Different pumpkin cultivars
• Coastal A P conditions
• Economic analysis
• Cost ratios were observed
• Adoption of technology
• Antioxidative enzymes
• Sunflower (Helianthus annuus L
• Two different cultivars
• NaCl induced oxidative stress
• NSSH 1084 compared to SWATI cultivar
• Dynamic growth pattern
• Biophysical parameters
• Mustard cultivars
• Different thermal environments
• Row orientation