نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری خاکشناسی، دانشکده کشاورزی و منابع طبیعیواحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران
2 دانشیار گروه خاکشناسی، دانشکده کشاورزی و منابع طبیعی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران
3 استاد گروه زهکشی، دانشکده علوم آب، دانشگاه شهید چمران اهواز، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The purpose of the study was to investigate the effect of nano-nitrogen chelate fertilizer application on a number of sugarcane characteristics (cultivar CP69-1062) and the feasibility of using digital image analysis method to determine the percentage of sugarcane seedlings green cover. The research was conducted at Mirza Kuchak Khan Aagro-industry Corporation located 65 km southwest of Ahwaz, Iran, in 2017.Statistical design was randomized complete block with five treatments and three replications. On the 15th day after cultivation, treatments were carried out in the field and included spraying different concentrations of urea fertilizer and nano-nitrogen chelate: T0= without fertilizer spraying (control), U1= urea spraying (concentration 0.2%), U2= urea spraying (concentration 0.3%), N1= nano-nitrogen chelate spraying (concentration 0.4%), and N2= nano-nitrogen chelate spraying (concentration 0.6%). Counts of buds and seedling sampling (to determine leaf nitrogen percentage) continued weekly for 12 weeks. In each experimental plot, digital photos were taken weekly and the green vegetation cover in these images was determined by Canopeo software. The results showed that experimental treatments did not have significant effect on seedling height, but had significant effects on germination percentage (p ≤ 0.05), leaf nitrogen, and seedling vegetation (p ≤ 0.01). Comparison of average vegetation percentage of seedlings by Duncan method showed a significant difference between all treatments compared to the control. Comparison of average vegetation percentage of seedlings showed significant differences (p ≤ 0.01) between all treatments compared to the control. There was significant difference between U1 and U2 treatments with N1 and N2 treatments. Also, the highest mean for germination number, leaf nitrogen content, and vegetation percentage was observed in N2 treatment. Significant correlation (R2 = 90.67%) was observed between weekly germination of sugarcane with green vegetation of seedlings, which can be used for grading sugarcane cultivation.
کلیدواژهها [English]