تأثير مستويات السماد البوتاسي ونوع و مستوى الزنك في أمتصاص المغذيات لنبات الحنطة النامية في تربة جبسية

Abstract EN

A field experiment was carried out at the Research Station of the College of Agriculture / Tikrit University during the season 2019-2020.

To study the effect of different levels of potassium fertilizer, level and source of zinc on nutrients uptake for wheat crop in gypsiferous soil According to a randomized complete block design (RCBD).

The experiment included (60) treatments resulted from combinations of two factors, the first potash fertilizer was added at four levels (0, 80 ,160 and 240) Kg K ha-1 as potassium sulphate and the second factor zinc fertilizer from two source, the mineral zinc sulphate ZnSO4.7H2O and chelate zinc Zn-EDTA with five levels of the two fertilizers are without fertilization, (10 and 20) Kg mineral zinc ha-1 and (10 and 20) Kg chelate zinc ha-1.

The results showed that The addition of K fertilizer gave a significan increased in uptake for each of the nitrogen, phosphate , potassium and zinc.

The level (K3) gave the highest amount of (249.85 , 43.57 and 217.82) mg N,P,K plant-1 and (286.99) Mg Zn plant-1 respectively.

As for the zinc fertilizer had asignificantly affect and gave level (Zn4) the highest absorbed amount (192.51 , 41.77 and 220.28) mg plant-1 and (393.04) Mg plant-1 and also gave interaction between potassium and zinc when treatment K2Zn4 the highest amount of absorption for the nutrients (P , K ,Zn) (62.54 , 293.65) mg plant-1 and (497.65) Mg plant-1 while the highest interaction for amount of nitrogen absorbed was the treatment K3Zn4 (324.60) mg plant-1