Effects of Nitrogen and Potassium Macro-elements on the Amount of Production in Flue – cured Tobacco Coker 374

Subject Areas : crop production

عليرضا فرخ ¹ ( - دكتري فيزيولوژي كياهان انستيتوي گياهشناسي آكادمي ملي جهموري آذربايجان )

Received: 2014-06-02 Accepted : 2016-12-15 Published : 2019-06-13

Keywords: nitrogen - potassium yield - yield components and flue cured tobacco,

Abstract :

In order to verify the effects of nitrogen and potassium on yield and yield components of flue-cured tobacco, an experiment was carried out in agronomical year of 2009 in Rasht Tobacco Research Institute in the form of factorial with 8 treatments and 3 replications. Fertilizing levels used were ( N1 ) 35, ( N2 ) 45, ( N3 ) 55, ( N4 ) 65 kg of net nitrogen per hectare from urea fertilizer source and ( K1 ) 150 and ( K2 ) 200 kg potassium per hectare from potassium sulfate source. Variety used in this experiment was coker 347, dry leaf yield, stalk height, stalk diameter and the number of leaves on the bush. On the basis of gained results, the effect on nitrogen on dry leaf yield at level of 1% (p<%1 ) and on the stalk height the stalk diameter at level of 5% ( p<%5 ) was significant. The effect of potassium on dry leaf yield and stalk diameter at level of 1% ( p<51 ) and stalk height and leaf number on bush at level of 5% was noticeable. Also interaction effect of nitrogen and potassium on dry leaf yield and stalk diameter at levels of %1 ( p<%1 ) and 5% ( p<%5 ) showed a significant effect respectively. The use of 65 kg N/ha and 200 kg K/ha had given the highest dry leaf yield with the mean of 2194 kg/ha. Application of 55 kg N/ha and 200 kg K/ha had given the highest stalk diameter with mean of 23.12

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