Effects of planting density and fertilizer level on the growth, yield, quality and nitrogenous compounds of Burley tobacco
1987
Kim, S.B. (Korea Ginseng and Tobacco Research Inst., Chonju (Korea R.). Chonju Experiment Station) | Ryu, I.S. (Korea Ginseng and Tobacco Research Inst., Taegu (Korea R.). Taegu Experiment Station)
Under the different conditions of planting density and compound fertilizer level, some agronomic and chemical characteristics of Burley tobacco were investigated from 1982 to 1984. Leaf area and dry leaf weight per plant, crop growth rate, relative growth rate and net assimilation rate for 40-60 days after transplanting were higher with increasing plant spacing and fertilizer, but leaf area index was lower with increasing plant spa1920cing. At topping stage, the leaf size was increased with increasing plant spacing and amount of fertilizer applied and the stem diameter was increased by increasing plant spacing. Leaf area, leaf weight per plant and weight per unit leaf area of harvested leaf were higher when plant spacing and fertilizer increased. It was estimated that optimum plant spacing was 105cm x 34cm and level of compound fertilizer (N-P2O5-K2O = 10-10-20) was 263Kg/10a for high yield. There were trends toward increase the contents of total alkaloid and total nitrogen with increasing plant spacing and fertilizer application. There was significant positive correlation between plant spacing and total nitrogen, and between fertilizer application and total nitro
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