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Paper Information

Journal:   IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES   2002 , Volume 16 , Number 1; Page(s) 0 To 0.
 
Paper: 

THE EFFECTS OF TYPE AND AMOUNT OF POTASSIUM FERTILIZERS ON THE YIELD AND QUALITY OF CARNATION

 
 
Author(s):  MATLABI FARD R., MALAKOUTI M.J., KAFI FALAVARJANI M.
 
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Abstract: 
A greenhouse study was conducted with 12 treatments and 5 replications. The experimental design was a complete randomized design. The treatments were (1) nitrogen and phosphorous (control) (2) 1st treatment + micronutrients, (3) 2nd treatment + 100% K requirement from KCl source, (4) 2nd treatment + 100% K requirement from K2SO4 source, (5) 2nd treatment + 150% K requirement from KCl source, (6) 2nd treatment + 150% K requirement from K2SO4 source, (7) 2nd treatment + 200% K requirement from KCl source, (8) 2nd treatment + 200% K requirement from K2SO4 source, (9) 2nd treatment + 200% K requirement from 505 KCl and 50% K2SO4 sources, (10) treatment 9 + soil incorporated MnSO4 (11) Treatment 10 + foliar application of complet micronutrients, and (12) Treatment 1 + foliar application of CaCl2.
The results indicate tha all K treatments increased the yield significantly at 1% level. Treatment 11 and 12 had the highest yields. The quality components and shelf life of the carnations were significantly improved compared with control 1% level, in all treatments. The treatments with 15% K fertilizer recommendation had the best effect on quality components. There was no significant difference between the two types of K fertilizers.
The leaf concentrations of Ca and Mn were reduced significantly in all K treatments. Treatments 7 and 8 had the highest reductions. From the results of this experiment, it is concluded that for the highest number of carnation flowers per plant, the 150% K fertilizers recommendations are the best
 
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