The Effect of N - P - K Fertilzers on Potatoe in Daryoon Region of Fars Province
1992
Keshavarz -e- Shirazi, Hadi | Keshavarz, Abolfath | Tvtvnchy, Samad | Vaqhefy, Abolghasem | Qrmzyan, Abdolmohammad
To study the effect of N-P-K Fertilzers on potatoe in Daryoon Region of Fars Province. a complete randomized block experiment was carried out for three years (61-64). Having five levels of Nand P (Ranging from 0 to 240 Kg/Ha of N & P 2°5 ) plus five additional treatments. containing potassium\{ l~Pto 100 Kg/Ha K20) in 3 replications. The experimental results indicate that: 1. During the first years the treatments using 120 & 240 Kg/Ha N has incresed the yield at S%leve1 , but P & K application had not effect. 2. Nitrogen has increased the yield linearly but P has increased the yield only when I. compared to plots with no P application during the second year. 3. Because of no response to K Application the extra plots were canceled from the experiment during the third year. 4. The results of the third year~correspond with the second year. 5. Looking at three years of work on potato indicats that N can increase the yield using 180-240 Kg/Ha N & 120 Kg/Ha P2 05. but K does not effect it,so the final reccmnendation for sirnniliar situation is N 240 P12.
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