ارزﯾﺎﺑﯽ ﮐﺎرﺑﺮد ﻋﻠﻒ ﮐﺶ ﭘﺎراﮐﻮات ﺑﺮاي ﮐﻨﺘﺮل ﻋﻠﻒ ﻫﺎي ﻫﺮز ﻧﺨﻮد

Investigation the application of paraquat to chickpea weed control

آزﻣﺎﯾﺶ ﻣﺰرﻋﻪاي ﺑﻪﺻﻮرت اﺳﭙﻠﯿﺖ ﭘﻼت در ﻗﺎﻟﺐ ﻃﺮح ﺑﻠﻮكﻫﺎي ﮐﺎﻣﻞ ﺗﺼﺎدﻓﯽ ﺑﺎ 4 ﺗﮑﺮار در ﻣﺰرﻋﻪ ﺗﺤﻘﯿﻘﺎت ﮐﺸﺎورزي داﻧﺸﮕﺎه ﮐﺮدﺳﺘﺎن در ﺳﺎل زراﻋﯽ 1395-96 اﺟﺮا ﮔﺮدﯾﺪ. ﻓﺎﮐﺘﻮر اﺻﻠﯽ ﺷﺎﻣﻞ 6 دوز ﻋﻠﻒﮐﺶ ﭘﺎراﮐﻮات)2/1 ،1/5 ،0/9 ،0/3 ،0 و 3 ﻟﯿﺘﺮ در ﻫﮑﺘﺎر( و ﻓﺎﮐﺘﻮر ﻓﺮﻋﯽ ارﻗﺎم ﻧﺨﻮد)آرﻣﺎن و آزاد از ارﻗﺎم ﮐﺎﺑﻠﯽ و ﮐﺎﮐﺎ و ﭘﯿﺮوز از ارﻗﺎم دﺳﯽ( ﺑﻮدﻧﺪ. ﮐﺮت ﻫﺎي آزﻣﺎﯾﺸﯽ در ﻣﺮﺣﻠﻪ رﺷﺪي 2 ﺗﺎ 4 ﺑﺮﮔﯽ ﻧﺨﻮد ﺑﺎ دوزﻫﺎي ﻣﻮرد ﻧﻈﺮ ﻋﻠﻒﮐﺶ ﭘﺎراﮐﻮات ﺳﻤﭙﺎﺷﯽ ﺷﺪﻧﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ ﺑﺎ اﻓﺰاﯾﺶ دوز ﻋﻠﻒﮐﺶ ﭘﺎراﮐﻮات ﺗﺮاﮐﻢ و وزن ﺧﺸﮏ ﻋﻠﻒﻫﺎي ﻫﺮز ﮐﺎﻫﺶ ﯾﺎﻓﺘﻨﺪ. ﺑﺮ اﺳﺎس ﺗﺮاﮐﻢ و وزن ﺧﺸﮏ ﻋﻠﻒﻫﺎي ﻫﺮز ﻗﺪرت رﻗﺎﺑﺖ رﻗﻢ آرﻣﺎن ﺑﯿﺶ از ﺳﺎﯾﺮ ارﻗﺎم ﺑﻮد. ﺑﺎ اﻓﺰاﯾﺶ دوز ﻋﻠﻒ ﮐﺶ ﭘﺎراﮐﻮات ﺗﺎ 2/1 ﻟﯿﺘﺮدرﻫﮑﺘﺎر ﻋﻤﻠﮑﺮد داﻧﻪ و ﻋﻤﻠﮑﺮد ﺑﯿﻮﻟﻮژﯾﮏ اﻓﺰاﯾﺶ ﭘﯿﺪاﮐﺮدﻧﺪ. در اﯾﻦ آزﻣﺎﯾﺶ ﻋﻤﻠﮑﺮد داﻧﻪ ﻧﺨﻮد رﻗﻢ آزاد ﺑﯿﺶ از ﺳﺎﯾﺮ ارﻗﺎم ﺑﻮد. ﺑﺪﯾﻦ ﺗﺮﺗﯿﺐ، ﺑﺎ ﺗﻮﺟﻪ ﻧﺘﺎﯾﺞ آزﻣﺎﯾﺶ ﺑﺮاي ﮐﻨﺘﺮل ﻋﻠﻒﻫﺎي ﻫﺮز ﺑﺎ ﻋﻠﻒ ﮐﺶ ﭘﺎراﮐﻮات ﻣﯽﺗﻮان رﻗﻢ آزاد را ﺑﺎ دوز 2/1 ﻟﯿﺘﺮدرﻫﮑﺘﺎر ﺑﻪ ﺻﻮرت ﺳﻤﭙﺎﺷﯽ ﺳﺮاﺳﺮي ﺗﻮﺻﯿﻪ ﻧﻤﻮد.

A field experiment was conducted as split plot based on randomized complete block design with 4 replications at University of Kurdistan agricultural research station during the 2016 growing season. The main plot factor included 6 paraquat doses (0, 0.3, 0.9, 1.5, 2.1 and 3 lit.ha-1) and subplots included 4 chickpea cultivars (Arman and Azad from Kabuli and Kaka and Piruz from Desi cultivars). The experimental plots were sprayed with paraquat doses in 2-4 leaf growth stage of chickpea. Results showed that weeds density and dry weight decreased as paraquat doses increased. Grain yield and biological yield increased with increasing herbicide dosage up to 2.1 liter / ha. Among the chickpea cultivars Azad had the highest grain yield. Therefore, According to results Azad cultivar can be recommended to weed control using paraquat by 2.1 lit.ha-1 in overall field spraying.