Idris, Abdullahi2023-12-142023-12-142019-11-02https://keffi.nsuk.edu.ng/handle/20.500.14448/6175Genetic variability and correlation study of some mineral composition and other agronomic traits in maize (Zea mays L.) in Keffi, Nasarawa State. Fourteen (14) genotypes were evaluated in randomized complete block design (RCBD) with three (3) replications. The twelve (12) agronomic characters were plant height, ear per plant, anthesis-silking interval, leaf length, leaf width, days to maturity, leaf area, No. of leaves per plant, molybdenum, boron, zinc, and grain yield. The results obtained from the analysis of variance for the agronomic traits studied showed significance difference (p < 0.05) among all the genotypes. The plant height had the mean of 111.20 cm and ranges from 89.00 cm (Y4) to 138.33cm (Y3). Number of leaves had a mean of 11.90 and ranges from 10.67 (Y5) to 12.67 (L2, W4, and Y3) respectively. Leaf length had a mean of 82.12cm and ranges from 67.00cm (Y5) to 109.33cm (L2). Leaf width had a mean of 8.60cm and ranges from 7.33cm (Y5) to 10.00cm (L2, and L3) respectively. Leaf area had a mean of 2.34 cm3 and ranges from 2.39cm3 (Y5) to 2.74cm3 (L2). Ears per pant had a mean of 1.62 and ranges from 1.00 (Y3) to 2.00 (L2 and W2) respectively. Anthesis Silking Interval had a mean of 2.50 and ranges from 2.00 (H2) to 3.00 (W2, and Y3) respectively. Days to maturity had a mean of 85.81 and ranges from 83.67 (Y2) to 88.67 (L3 and W2) respectively. Grain Yield had a mean of 125.20kg/ha which ranges from 82.05kg/ha (Y5) to 207.86K\kg/ha (L1). Molybdenum had a mean of 0.07 and ranges from 0.01 (H2, H1, L3 and Y1) respectively to 0.25 (W5). Boron had a mean of 0.45 and range from 0.34(W5) to 0.55 (L2). Zinc had a mean of 1.35 and range from 0.25 (Y2) to 3.84 (Y1). Correlation study showed that plant height exhibited significant positively correlation with leaf length (r = 0.53), leaf width (r = 0.42) and leaf area (r = 0.56). Number of leaves showed significant positively correlation with leaf length (r = 0.64), leaf width (r = 0.72) and leaf area (r = 0.78). Leaf length exhibited a significant positive correlation on leaf width (r = 0.58), leaf area (r = 0.82) and boron (r = 0.34). Leaf width showed a significant positively correlation on days to maturity (r = 0.36) and ear per plant exhibited a significantly positive correlation on grain yield (r = 0.50). Molybdenum exhibited a significantly positive correlation with boron (r = 0.34). The results in this study revealed an easily measured increase in the anthesis-silking interval as the silk emergence is delayed. Similarly, the results also showed a positive correlation between micronutrients concentration in maize suggested that it is possible to improve various micronutrients in maize grain simultaneously. Further work should be done to elucidate underlying physiological mechanisms of the relation among micronutrients, particularly in cases when the relations are not obscured by deficiency of any element as an additional complicating factor.enThesis