tailieunhanh - Weed dynamics in rejuvenated robusta coffee plantation of Jorhat district of Assam, India

Weed problems are very complex and serious in coffee plantations of North East Region of India because of favourable agro climatic situations for weed growth. The study on emergence and population dynamics of weeds will help to develop efficient weed management strategy. Therefore, the present investigation was undertaken for two consecutive years in 2016 and 2017 at the Experimental Garden for Plantation Crops of Assam Agricultural University, Jorhat, Assam with the objective to study the weed dynamics in rejuvenated robusa coffee. In soil seed bank study, the weed emergence was recorded in decreasing order of Borreria articularis, Sporobolus sp, Ageratum hostonianu, Isachne globosa, Mikania micrantha, Polygonum sp, Diplezium esculentum and Digitaria setigera. The weeds present in rejuvenated coffee consisted of two species of grasses, one species of sedge and six species of broad leaf weeds. Among the grassy weeds, Isachne globosa and Sporobolus sp. were the dominant ones. The only sedge present was Cyperus iria. The predominant among broad leaf weeds were Mikania micrantha, Gynura bicolor, Spermacoce hispida and Scoparia dulcis. The weed dynamics revealed the peak density of grass, sedge and broad leaf weed at 80, 120 and 80-160 days after manual weeding and thereafter showed a decreasing trend. | Weed dynamics in rejuvenated robusta coffee plantation of Jorhat district of Assam, India

• Lâm nghiệp
• Weed dynamics
• Coffee plantation
• Borreria articularis
• Rejuvenated robusta coffee plantation
• Gynura bicolor
• Integrated weed management
• Soyabean [Glycine max (L
• ) Merill]
• Weed dynamics of soyabean
• Higher weed control efficiency resulting
• Crop establishment methods
• Weed management
• Various weed management approaches
• Weed dynamics in rice
• Productivity and weed dynamics
• Weed dynamics of integrated weed management practices
• Integrated weed management practices
• Soybean + pigeonpea intercropping system
• Pigeonpea intercropping system
• Weed density
• Weed biomass
• Weed management practices
• Productivity in maize (Zea mays)
• Wheat (Triticum aestivum) system
• Weed dynamics in rice crop
• Various crop establishment methods
• Weed management approaches
• Growth parameters
• Weeding and dynamics
• Wet direct seeded rice
• Weed dynamics of wet direct seeded rice
• Productivity of hybrid maize
• Hybrid maize (Zea mays)
• Integrated weed management practices
• Bispyribac Na
• Direct seeded rice
• Aerobic condition
• Yield of rice
• Nitrogen on weed dynamics
• Gobhi mustard
• Profitability under conservation agriculture
• Weed management strategy on weed dynamics
• Crop growth parameters and yield
• Herbicides weed management effect
• Crop growth
• Yield in rice
• Cynodon dactylon
• Different weed management practices
• Weed dynamics and growth parameters
• Doob grass
• Calendar days
• Green gram
• Phenological behaviour
• Weed dynamics and productivity
• Green gram influenced
• Weed control treatments
• Water ecosystem
• Economics of pond
• Physico chemical properties
• Green manuring
• Weed index
• Broad leaved weeds
• Irrigated medium land situation
• Various weed management practices
• Post emergence herbicide mixtures
• Weed dynamics and maize
• Zea mays L
• Sub humid southern plain
• Direct seeded basmati rice
• Nutrient uptake
• Wheat in irrigated sub tropics
• Plant geometry
• Seed rate
• Wheat and yield
• Wheat (Triticum aestivum L )
• Productivity as well as weed dynamics
• Hand weeding
• Weed control efficiency
• Yieldattributes and yield
• Weed dynamics and yield attributes
• Different herbicides
• Early postemergence
• Greengram (Vigna radiata L )
• Yield of greengram
• Date of sowing
• Net returns
• Short duration pigeonpea (Cajanus cajan (L) Millsp )
• Weed indices
• Grain yield
• Direct seeded basmati rice preceded
• Weed management interventions
• Weed density and yield
• Yield of chickpea
• Chickpea (Cicer arietinum L )
• Post emergence herbicides
• Pre emergence herbicides
• Postemergence herbicides
• Weed species
• Weeds control efficiency and yield
• Soybean (Glycine max L )
• Population dynamics
• Tillage systems
• Weed diversity indices
• Conservation tillage
• Viable weed seed density
• Water productivity
• Conservation agriculture
• Weeds dynamics in CA
• Weed control strategies
• Crops in rotation