مطالعه اثر برهمكنش علف كش و اسيد هيوميك در كنترل آزولا به منظور افزايش عملكرد برنج( Oryza Sativa )

The Interaction of Herbicide and Humic Acid on Azolla Control to Enhance the Yield of Rice (Oryza sativa)

در راﺳﺘﺎي اﻓﺰاﯾﺶ ﻋﻤﻠﮑﺮد ﺑﺮﻧﺞ در اﺛﺮ ﺑﺮﻫﻤﮑﻨﺶ ﻋﻠﻒﮐﺶ و اﺳﯿﺪ ﻫﯿﻮﻣﯿﮏ در ﮐﻨﺘﺮل آزوﻻ، آزﻣﺎﯾﺸﯽ در ﺳﺎل زراﻋﯽ 1395 در اﺳﺘﺎن ﻣﺎزﻧﺪران (آﻣﻞ) اﺟﺮا ﺷﺪ. آزﻣﺎﯾﺶ ﺑﻪ ﺻﻮرت ﻓﺎﮐﺘﻮرﯾﻞ و در ﻗﺎﻟﺐ ﻃﺮح ﺑﻠﻮكﻫﺎي ﮐﺎﻣﻞ ﺗﺼﺎدﻓﯽ ﺑﺎ ﺳﻪ ﺗﮑﺮار اﻧﺠﺎم ﺷﺪ. ﻓﺎﮐﺘﻮرﻫﺎي آزﻣﺎﯾﺸﯽ ﺷﺎﻣﻞ ﭘﻨﺞ ﺳﻄﺢ ﻋﻠﻒﮐﺶ (ﺗﻮﻓﻮردي %72SL )( ﯾﻮ46 دﯾﻔﻠﻮﺋﯿﺪ)، ﺑﻨﺴﻮﻟﻔﻮرون ﻣﺘﯿﻞ 60DF% (ﻟﻮﻧﺪاﮐﺲ)، ﺑﻨﺘﺎزون 48SL% (ﺑﺎزاﮔﺮان)، اﮐﺴﺎدﯾﺎرژل 3% (ﺗﺎپ اﺳﺘﺎر) و ﺷﺎﻫﺪ ﻋﺪم ﻣﺼﺮف ﻋﻠﻒﮐﺶ( و ﺳﻪ ﺳﻄﺢ اﺳﯿﺪ ﻫﯿﻮﻣﯿﮏ )12 ﻟﯿﺘﺮ در ﻫﮑﺘﺎر، 6 ﻟﯿﺘﺮ در ﻫﮑﺘﺎر و ﺷﺎﻫﺪ ﻋﺪم ﻣﺼﺮف اﺳﯿﺪ ﻫﯿﻮﻣﯿﮏ( ﺑﻮد. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ اﺛﺮ ﺳﺎده ﮐﺎرﺑﺮد ﻋﻠﻒﮐﺶ و اﺳﯿﺪ ﻫﯿﻮﻣﯿﮏ در ﺗﻤﺎم ﺻﻔﺎت ﻣﻮرد اﻧﺪازهﮔﯿﺮي ﻣﻌﻨﯽدار ﺑﻮد. ﻫﻤﭽﻨﯿﻦ ﺗﻌﺪاد ﭘﻨﺠﻪ در ﺑﻮﺗﻪ، ﻃﻮل ﺧﻮﺷﻪ، وزن ﺗﺮ آزوﻻ و ﻋﻤﻠﮑﺮد داﻧﻪ، ﺗﺤﺖ ﺗﺄﺛﯿﺮ ﺑﺮﻫﻤﮑﻨﺶ ﻋﻠﻒﮐﺶ و اﺳﯿﺪ ﻫﯿﻮﻣﯿﮏ ﻗﺮارﮔﺮﻓﺖ ﺑﻪ ﻃﻮريﮐﻪ ﮐﻤﺘﺮﯾﻦ وزن ﺗﺮ آزوﻻ (115/33 ﮔﺮم در ﻣﺘﺮ ﻣﺮﺑﻊ) در ﺗﯿﻤﺎر اﺛﺮ ﻣﺘﻘﺎﺑﻞ ﻋﻠﻒﮐﺶ اﮐﺴﺎدﯾﺎرژل و اﺳﯿﺪ ﻫﯿﻮﻣﯿﮏ 12 ﻟﯿﺘﺮ در ﻫﮑﺘﺎر ﺑﻮد و ﺑﯿﺸﺘﺮﯾﻦ ﻋﻤﻠﮑﺮد داﻧﻪ (6871 ﮐﯿﻠﻮﮔﺮم در ﻫﮑﺘﺎر) ﻧﯿﺰ در اﯾﻦ ﺗﯿﻤﺎر ﻣﺸﺎﻫﺪ ﺷﺪ.

To increase the rice yield by the interaction of herbicides and humic acid on Azolla control, an experiment was conducted in Amol, Mazandaran, in 2016 as a factorial experiment in randomized complete block design with three replications. Treatments consisted of herbicides application in five levels: 2-4-D SL72%, Bensulfuron methyl DF60% (Londax), bentazon SL48% (Bazagran), Oxadiargyl EC3% (Top Star) and control, and humic acid at three levels: 12, 6 and 0 lit/h (control, no humic acid). The results of this study showed that the simple effect of application of herbicides and humic acid on all traits was significant. Also, tillers number, panicle length, Azolla weight and rice yield were affected by the interaction of herbicides and humic acid. The lowest Azolla weight (115.33 g m-2) was obtained by the interaction of Oxadiargyl and 12 litha˗¹humic acid, and the highest grain yield (6871 Kg ha˗¹) was also observed in the same treatment.