واﮐﻨﺶ رﺷﺪ ﮐﯿﻨﻮا ﺑﻪ ﺗﺎرﯾﺦ ﮐﺎﺷﺖ ﺑﻬﺎره و ﺳﻄﻮح ﻧﯿﺘﺮوژن در ﻣﻼﺛﺎﻧﯽ

Quinoa Growth Response to Spring Planting Date and Nitrogen Levels in Mollasani

ﺑﻪ ﻣﻨﻈﻮر ﻣﻄﺎﻟﻌﻪ اﺛﺮ ﺗﺎرﯾﺦ ﮐﺎﺷﺖ و ﺳﻄﻮح ﻧﯿﺘﺮوژن ﺑﺮ ﺑﺮﺧﯽ ﺻﻔﺎت ﻣﻮرﻓﻮﻟﻮژﯾﮏ ﮐﯿﻨﻮا، آزﻣﺎﯾﺸﯽ ﺑﻪ ﺻﻮرت ﮐﺮت ﻫﺎي ﺧﺮد ﺷﺪه در ﻗﺎﻟﺐ ﻃﺮح ﭘﺎﯾﻪ ﺑﻠﻮك ﻫﺎي ﮐﺎﻣﻞ ﺗﺼﺎدﻓﯽ ﺑﺎ ﺳﻪ ﺗﮑﺮار در داﻧﺸﮕﺎه ﻋﻠﻮم ﮐﺸﺎورزي و ﻣﻨﺎﺑﻊ ﻃﺒﯿﻌﯽ ﺧﻮزﺳﺘﺎن در ﺳﺎل زراﻋﯽ 1397-98 اﺟﺮا ﺷﺪ. ﻋﻮاﻣﻞ آزﻣﺎﯾﺸﯽ ﺷﺎﻣﻞ دو ﺗﺎرﯾﺦ ﮐﺎﺷﺖ )1 و 15 اﺳﻔﻨﺪﻣﺎه( در ﮐﺮت ﻫﺎي اﺻﻠﯽ و ﭘﻨﺞ ﺳﻄﺢ ﻧﯿﺘﺮوژن )ﺻﻔﺮ، 100، 200، 300 و 400ﮐﯿﻠﻮﮔﺮم در ﻫﮑﺘﺎر( از ﻣﻨﺒﻊ اوره در ﮐﺮت ﻫﺎي ﻓﺮﻋﯽ ﺑﻮدﻧﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ ﺗﺎرﯾﺦ ﮐﺸﺖ ﺑﺮ ﮐﻠﯿﻪ ﺻﻔﺎت ﻣﻮرد ﺑﺮرﺳﯽ ﺷﺎﻣﻞ ارﺗﻔﺎع ﺑﻮﺗﻪ و ﺳﺎﻗﻪ، ﺗﻌﺪاد ﺷﺎﺧﻪ ﻓﺮﻋﯽ و ﻃﻮل ﮔﻞ آذﯾﻦ اﺛﺮ ﻣﻌﻨﯽ دار ﻧﺪاﺷﺖ وﻟﯽ اﺛﺮ ﺳﻄﻮح ﻧﯿﺘﺮوژن ﺑﺮ ﺻﻔﺎت اﻧﺪازه ﮔﯿﺮي ﺷﺪه در ﺳﻄﺢ اﺣﺘﻤﺎل ﺧﻄﺎي ﯾﮏ درﺻﺪ ﻣﻌﻨﯽ دار ﺑﻮد. ﻫﻤﭽﻨﯿﻦ اﺛﺮ ﻣﺘﻘﺎﺑﻞ ﺗﺎرﯾﺦ ﮐﺎﺷﺖ و ﻧﯿﺘﺮوژن ﻧﯿﺰ ﺑﺮ ﺻﻔﺎت ﻓﻮق اﺛﺮ ﻣﻌﻨﯽ دار ﻧﺪاﺷﺖ. ﺑﯿﺸﺘﺮﯾﻦ ارﺗﻔﺎع ﺑﻮﺗﻪ و ﺳﺎﻗﻪ، ﺗﻌﺪاد ﺷﺎﺧﻪ ﻓﺮﻋﯽ، ﻃﻮل ﮔﻞ آذﯾﻦ و ﻋﻤﻠﮑﺮد ﺑﯿﻮﻟﻮژﯾﮏ ﺑﺎ ﻣﺼﺮف 400 ﮐﯿﻠﻮﮔﺮم در ﻫﮑﺘﺎر ﻧﯿﺘﺮوژن ﺑﺪﺳﺖ آﻣﺪ و ﮐﻤﺘﺮﯾﻦ ﻣﯿﺰان ﺻﻔﺎت ﻣﺬﮐﻮر در ﺳﻄﺢ ﻋﺪم ﮐﺎرﺑﺮد ﻧﯿﺘﺮوژن ﻣﺸﺎﻫﺪ ﺷﺪ.

To evaluate the effect of sowing date and nitrogen levels on some morphological traits of quinoa, a field experiment was conducted at research farm of Agricultural Sciences and Natural Resources University of Khuzestan, Iran in 2019 growing season. The experiment was conducted in split plot arrangement based on completely randomized block design with three replicates. Experimental factors were two sowing dates (20 Feb and 6 Mar.) in main plots and five nitrogen rates (0, 100, 200, 300 and 400 kg/ha) in sub plots. Results showed that planting date had no significant effect on all studied traits including plant and stem height, number of branches and panicle length and nitrogen levels were significant at 1% error probability level. The interaction between planting date and nitrogen had no significant effect on these traits. The highest plant and stem height, branch number and panicle length and biological yield were obtained with 400 kg/ha nitrogen and the least of these traits were observed at the level of control N application.