The effect of macro fertilizers on amount of production and growth indexes in flue-cured tobacco

In order to investigate the effect of nitrogen and potassium fertilizers on yield and mineral accumulation of cv.Coker347 and cv.K326 of flue-cured tobacco, experiment was carried out in tobacco research institute of Rasht located in Guilan province on factorial based with 3 replications. The applied fertilizer levels included 35 (N1), 45 (N2), 55 (N3) and 65 (N4) Kg/ha of pure nitrogen from urea source, and potassium in two levels of 150 (K1) and 200 (K2) Kg/ha potassium from potassium Sulfate. The measured parameters in this experiment included dried leaf weight, leaf area index (LAI), crop crowth rate (CGR), net assimilation rate (NAR). The effect of variety on dried leaf yield was significant on 1% level. The potassium had significant effect on dried leaf on 1% level. The interaction between cultivar and nitrogen was significant on dried leaf yield on 1% level. The interaction between cultivar and potassium was significant on dried leaf on 1% level. The interaction between nitrogen and potassium was significant on dried leaf yield on 5% level. The interaction among cultivar, nitrogen and potassium on dried leaf yield was significant on 1% level. Keywords: Macro Fertilizers, Yield, Growth Indexes, Flue-Cured tobacco

Macro Fertilizers, Yield, Growth Indexes, Flue-Cured tobacco