TAILIEUCHUNG - Effect of weed management on weed interference, nutrient depletion by weeds and production potential of long duration pigeonpea (Cajanus cajan L.) under irrigated ecosystem

Timely weed management is important to increase productivity in s longduration crop like pigeonpea. A field study to evaluate the effect of weed management on weed interference, nutrient depletion by weeds and production potential of long duration pigeonpea under irrigated ecosystem was conducted at Agricultural Research Farm, IAS, BHU, Varanasi during 2009-10 and 2010-11. Results revealed that use of imazethapyr @ kg ha-1 followed by (fb) paraquat @ kg ha-1 40 days after sowing (DAS) significantly (P ≤ ) reduced the weed density, total weed density and total weed dry weight being statistically at par with two hand weeding (HWs) at 25 and 50 days after sowing (DAS). Weed control index, weed persistence index and weed index were the highest in weed- free, 2- HWs and imazethapyr applied @ kg ha-1 fb paraquat kg ha-1 . However, weed-free treatment resulted in per cent higher yield attributes like pods plant-1 ( and ), grains pod-1 (34 and ), 1000-grain weight ( and ), grain yield ( and ), gross returns ( and ), net returns ( and ) and benefit-cost ratio ( and ), being significantly higher than weedy check but remained at par with 2-HWs, imazethapyr @ kg ha-1 fb paraquat @ kg ha-1 . The highest nutrient depletion by weeds was recorded in weedy check, whereas, the lowest was in imazethapyr @ kg ha-1 fb paraquat kg ha-1 . | Effect of weed management on weed interference, nutrient depletion by weeds and production potential of long duration pigeonpea (Cajanus cajan L.) under irrigated ecosystem

• Nông nghiệp
• Seed yield
• Weed control index
• Weed flora
• Irrigated ecosystem
• Management on weed interference
• Nutrient depletion by weeds
• French bean seeds
• Seed quality
• Quality in French bean
• Seed pelleting on seed yield
• Influence of seed pelleting
• French bean (Phaseolus vulgaris L )
• Seed pelleting
• Seed yield in French bean
• Seed lots
• Pulsed electromagnetic field
• Seed yield in soybean
• Biofortified genotypes of pearl millet
• Micronutrients on seed yield
• Seed polymerization
• Cluster bean
• Seed yield parameters
• Vegetable pod yield
• Yield and its component traits
• Seed treatment
• Polymer coating
• Polymer seed coating
• Seed quality parameters
• Yield attributing characters
• Hybrid maize
• Seed priming
• Seed priming and pinching
• Sesame (Sesamum indicum L
• Yield and seed quality parameters
• Seed rate
• Grain yield
• Growth of chickpea
• Yield of chickpea
• Standard heterosis
• Study of heterosis for seed yield
• Heterosis for seed yield
• Component traits in castor
• Variability studies in M4 generation
• M4 generation for yield
• Seed yield attributing traits
• Seed yield attributing traits of Isabgol
• Induced mutation breeding
• Different pinching approaches
• Seed yield in Dhaincha
• Foliar nutrition on yield components
• Number of pods plant
• Pod yield plant
• Pulse crop
• Foliar nutrition
• Di Ammonium Phosphate
• Seed yield of pulse crops
• Yield attributes
• Foxtail millet
• Seed priming and seed treatment
• Foxtail millet [Setaria italica (L
• ) Beauv
• Seed treatment on growth
• Sowing date
• Different safflower genotypes
• Oil yield and economics
• Sowing dates on seed yield
• Chemo morphic traits determining seed yield
• Growing seasons
• Sesame as influenced
• Seed yield in five varieties
• Sesamum seed production followed
• Seed fortification
• Growth and seed yield
• Blackgram (Vigna mungo L
• Replicated thrice in RCBD design
• Boron effect
• Seed yield and seed quality
• Wheat and zinc effect
• Wheat (Triticum aestivum L )
• Seed quality of wheat
• Micro nutrients on growth
• Path analysis
• Cluster bean [Cyamopsis tetragonoloba (L ) Taub ]
• Vegetable yield and seed yield traits
• Grass pea
• 1000 seed weight
• Heritability for seed yield
• Grass pea Lathyrus sativus L
• genotypes
• Path coefficient
• Seed cotton
• Cotton (Gossypium hirsutum L
• Path coefficient analysis
• Seed cotton yield
• Yield attributing
• Fibre quality traits in cotton
• Haulm yield
• Plant height
• Plant residues
• Seed yield of soybean
• Test weight
• Harvest index
• Biological yield
• Seed yield of Indian mustard
• Nitrogen fertilization
• Leaf area
• Seed yield of rapeseed variety
• Lower seed yield of rapeseed
• Coriander (Coriandrum sativum L
• Seed priming through KnO3
• Plant growth
• Seed production of coriander
• Potassium fertilization
• Cotton wheat cropping system
• Response of seed cotton yield