The influence of potassium clay content on potassium assimilation by plants and the availability of (NPK) in soil.

Abstract

Abstract A biological experiment was conducted to determine Effect of clay content and potassium levels on some growth characteristics of wheat plants. The experiment included three levels of clay content (low, medium, high), symbolized by (C1, C2, C3). and four levels of potassium fertilizer (0, 75, 150, 300 kg K−1). symbolized by(K0, K1, K2, K3), Two factor were used for the experiment with three replicates, so that the number of experimental units reached 36 experimental units. The experiment was conducted within a randomized complete block design (RCBD). At maturity, the plant height, number of tillers, and leaf area and chlorophyll index were measured. The results showed that Effect of high clay content had a significant effect on increasing plant height, chlorophyll index, leaf area, and number of tillers, as the values reached (69.02cm, 48.800 SPAD, 49.07 cm2, 6 tillers(As for Effect of potassium, it achieved level K3. The highest growth indicators were for plant height, chlorophyll index, leaf area, and number of tillers, as the values reached (62.06 cm, 46.21 SPAD, 45.37 cm2, and 5.33 tillers.(Also, bi-interaction for high clay content and full potassium level recommended a significant increase for all of the above growth indicators for the C3K3 treatment, which did not differ significantly from the C3K3 treatment for some traits.