10705

9888

كارشناسي ارشد

زراعت

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1394

دوازده، 129ص.: مصور

حسن كريم مجني

جمشيد رزمجو، مرتضي زاهدي

1394/09/10

حميدرضا عشقي زاده، نفيسه پورجواد

1396/10/05

كتابنامه

كشاورزي

مهندسي كشاورزي

ID9888

130Effect of Different Levels of Nitrogen and Planting Pattern on Quality and Quantity of Yield in Mixed Intercropping Berseem Clover and Barley under Conditions of Weed Interference Sepehr Sabzevari sepehrsabzevari@Ymail com Sep 6 2015 Department of Agronomy and Plant Breeding Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Persian Supervisor Hassan Karimmojeni Kmojeni@ cc iut ac ir Abstract Today the use of suitable cropping systems as an effective way to increase stability and improve the crop production have been considered by agricultural specialists By creating diversity through intercropping cropping systems will has found more dependence to internal and renewable resources and increases their stability Such systems will provide an optimum conditions for the management of resources while increase the diversity of production and reduce risks and losses In order to study the effects of different levels of nitrogen and planting pattern on quality and quantity yield in mixed intercropping of berseem clover Trifolium alexandrinum L and barley Hordium vulgare L under conditions of weed interference a field experiment was conducted in the research farm of Isfahan University of Technology Iran during March 2014 to July 2014 under irrigated system The experiment was arranged in a split plot based on randomized complete block design with three replications The main plots were involved different nitrogen rates in three levels 0 30 60 kg ha and sub plots were included different planting patterns of two crops in six levels 100 berseem clover 100 barley 100 berseem clover 75 barley 100 berseem clover 50 barley 100 berseem clover 25 barley pure stand of berseem clover and pure stand of barley with additive series technique Results showed that the highest yield of fresh forage dry forage crude protein and crude fiber were obtained by application of 60 kg ha nitrogen in 100 berseem clover 25 barley treatment while maximum percentage of crude protein was obtained at the same level of nitrogen but in pure stand of berseem clover treatment and the most percentage of crude fiber was achieved without nitrogen application in pure stand of barley treatment The highest amount of light was received by canopy at level of the 60 kg ha nitrogen in 100 berseem clover 25 barley treatment The maximum Land Equivalent Ratio LER 1 45 and Aggressivity Index AI 0 43 for dry forage were achieved at 100 berseem clover 25 barley treatment The maximum biomass of weeds were obtained when 60 kg ha nitrogen applied in pure stand of bersem clover and the minimum biomass of weeds were achieved in mixed intercropping system of 100 berseem clover 25 barley In general results showed that mixed intercropping of berseem clover and barley and application of 60 kg ha nitrogen is much more efficient than pure stands resulting in the highest yield Also combination of these crops could be reduce growth of weed Keywords forage crops intercropping land equivalent ratio weed interference

حسن كريم مجني

جمشيد رزمجو، مرتضي زاهدي

حميدرضا عشقي زاده، نفيسه پورجواد