ﺑﺮرﺳﯽ اﺛﺮ اﻟﮕﻮي ﮐﺸﺖ ﻧﺸﺎﯾﯽ وﺑﺬري وﻋﻠﻔﮑﺶ ﺑﺮ ﻋﻠﻒ ﻫﺎي ﻫﺮز ﮐﻠﺰا (Brassica napus L.)

Investigation of the Effect of Planting and Seeding Pattern on Rapeseed Weeds (Brassica napus L.)

ﺑﻪ ﻣﻨﻈﻮر ﺑﺮرﺳﯽ ﺗﺎﺛﯿﺮ اﻟﮕﻮي ﮐﺸﺖ )ﻧﺸﺎﯾﯽ و ﺑﺬري( وﻋﻠﻔﮑﺶ ﺑﺮ ﻋﻠﻒ ﻫﺎي ﻫﺮز ﮐﻠﺰا آزﻣﺎﯾﺸﯽ در ﻗﺎﻟﺐ ﻃﺮح اﺳﭙﯿﻠﯿﺖ ﭘﻼت ﺑﺮ ﭘﺎﯾﻪ ﻃﺮح ﺑﻠﻮك ﻫﺎي ﮐﺎﻣﻞ ﺗﺼﺎدﻓﯽ ﺑﺎ 4 ﺗﮑﺮار در ﭘﺎﯾﯿﺰ ﺳﺎل 1394 در ﻣﺰرﻋﻪ ﭘﮋوﻫﺸﯽ داﻧﺸﮕﺎه ﻋﻠﻮم ﮐﺸﺎورزي وﻣﻨﺎﺑﻊ ﻃﺒﯿﻌﯽ ﺧﻮزﺳﺘﺎن اﻧﺠﺎم ﺷﺪ ﺗﯿﻤﺎرﻫﺎ ﺷﺎﻣﻞ ﮐﺮت اﺻﻠﯽ)ﻧﺸﺎﯾﯽ و ﺑﺬري( در دو ﺳﻄﺢ و ﮐﺮت ﻓﺮﻋﯽ ﺑﺎ ﭘﻨﺞ ﺳﻄﺢ )ﻣﺘﺮي ﺑﻮزﯾﻦ 250ﮔﺮم در ﻫﮑﺘﺎر، ﻣﺘﺮي ﺑﻮزﯾﻦ 300 ﮔﺮم در ﻫﮑﺘﺎر، ﺗﺮﯾﻔﻠﻮراﻟﯿﻦ 2/5 ﻟﯿﺘﺮ در ﻫﮑﺘﺎر، ﺷﺎﻫﺪ ﺑﺎ ﻋﻠﻒ ﻫﺮز، ﺷﺎﻫﺪ ﺑﺪون ﻋﻠﻒ ﻫﺮز. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﻣﻮﺛﺮﺗﺮﯾﻦ ﺗﯿﻤﺎر در ﮐﻨﺘﺮل ﺗﻌﺪاد ﻋﻠﻒ ﻫﺎي ﻫﺮز ﭘﺲ از ﺷﺎﻫﺪ ﺑﺪون ﻋﻠﻒ ﻫﺮز ﺗﯿﻤﺎر ﻣﺘﺮي ﺑﻮزﯾﻦ 300 ﮔﺮم در ﻫﮑﺘﺎر در ﮐﺸﺖ ﻧﺸﺎﯾﯽ ﺑﻮد ﻫﻤﭽﻨﯿﻦ ﺗﯿﻤﺎر ﻣﺘﺮي ﺑﻮزﯾﻦ 300 ﮔﺮم در ﻫﮑﺘﺎر ﺑﯿﺸﺘﺮﯾﻦ ﮐﺎﻫﺶ را در ﻣﺠﻤﻮع وزن ﺧﺸﮏ ﻋﻠﻒ ﻫﺎي ﻫﺮز داﺷﺘﻪ اﺳﺖ.اﻟﮕﻮي ﮐﺸﺖ ﻧﺸﺎﯾﯽ در ﮐﻨﺘﺮل ﺗﻌﺪاد و وزن ﺧﺸﮏ ﻋﻠﻒ ﻫﺎي ﻫﺮز ﺑﻬﺘﺮ از ﮐﺸﺖ ﺑﺬري ﻋﻠﻒ ﻫﺎي ﻫﺮز را ﮐﻨﺘﺮل ﻧﻤﻮده اﺳﺖ

This experiment was conducted in 2015 at Khuzestan University of Agricultural Sciences and Natural Resources experimental field in order to examine the effect of planting pattern and herbicides on canola yield and weeds. The experimental design was a randomized complete block with split arrangement of treatments with four replication. Planting pattern was as main plots consisting direct sowing and transplanting and sub herbicides were as sub plots consisting Metribuzin at 250 g/ha, Metribuzin at 300 g/ha, Trifluralin at 2/5 L/ha, Weed free and Weedly checks. Results indica Metribuzin ated that Metribuzin at 300 g/ha was most effective treatment in controlling total number of weeds in transplanting method. Metribuzin at 300 g/ha was the most effective treatment in reducing total dry weight of weeds. Transplanting method was more effective than direct seeding in controlling total number and dry weight of weeds. According to this t transplanting method and Metribuzin application is recommended for controlling canola weed in integrated weed management reducing herbicides usage and protection of environment.