Maize nutrient uptake and soil available k in soil as affected by source and ran of k-Fertilizer and soil water stress conditions [electronic resource].

Includes references.

Two pot experiments were conducted on a sandy soilto study the effects of soil water stress, and rate and type of K -fertiflZef on nutrients uptake two Maize (lea mews L.) hybrids S.C 10 and T W.C3W and K soil availability two pot experiments were conducted. TIlree soil water regimes (100, 75 and 50% of soil field capacity), four K application rates (0, 50, 100 mg Klkg soil.) and four types of K sources (KCI, K₂SO₄, KNO₃ and a 1:1:1 mixture of them) were studied in a 3-faetor randomized complete block design, 3 replicate. Soil-water stress bad significant effects on the CONCENTRATION OF EACH OF Na. K, ca. Mg, p. and N in plant of the studied nutrient in the two maize hybrids. Potassium fertilizer sources had significant effects on all nutrients content except calcium and magnesium in both hybrids. Available K in soil was highest at 100% field capacity and in treatment receiving highest K rate. The findings suggest that available K in soil can be altered by adjusting the level of K-fertilizer and the level of soil moisture.

Summary in Arabic.

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