تأثير إضافة البوتاسيوم إلى التربة و بالرش و الرش بمستخلص عضوي في نمو و حاصل البطاطا

الملخص EN

A field experiment was conducted at the field of College of Agriculture –Baghdad University (Abo-Ghraib) at spring season 2012 to investigate the influence of potassium fertilizer.

Foliar application with potassium and organic extract on growth and yield of potato.

The potassium fertilizer was applied at zero, 200, 400 Kg K.

ha-1 as potassium sulfate.

Foliar application of potassium zero and 5000 mg.

L-1 any spray with organic extract zero and 10 ml.litter-1.

The results of this study were : Application of potassium fertilizer, spray with potassium and organic extract give significantly increased in dry weight of shoot, yield weight and number of tubers and starch percentage in tubers.

That were 6243.33 Kg.ha-1, 36.07 Ton.

ha-1, 6.45 tuber.

plant-1, 140.33 gm.tubers-1 and 12.41 % respectively in M10 F5000K400 treatment.