Studying the comparison of the ground addition and spraying with humic acid in some growth traits of wheat (Triticum aestivum l.)‎

الملخص EN

This study is conducted to know the effect of ground addition and spraying with humic acid and their interaction on the growth and yield of wheat (Triticum aestivum L.

) in one of the agricultural fields belonging to Karbala province (Ayn Al-Tamr) during the winter season in loamy sand soil.

It included three levels of ground addition which are (0, 20 and 40 kg.

ha-1) representing the first factor which are symbolized (H0, H1, H2) and spraying with humic acid representing the second factor which is symbolized (F0, F1, F2), with three concentrations are (0, 5, 10 ml.

L-1).

Thus, the number of treatments became two treatments with three replicates, so the number of experimental units became 27 experimental units, and the experiment was conducted according to the Randomized Complete Block Design (RCBD).

Wheat (IPA-99 cultivar) was cultivated in January 2018.

At maturity, the height of the plant, the leaf area, the chlorophyll index, and the number of branches were measured.

The results showed: 1- The ground addition treatment of humic acid (H2) has excelled compared to the control treatment with a significant increase in most traits of the growth for the wheat crop which amounted to (102.

83 cm, 52.

10 cm2, 10 branches, and 54.

04 Spad unit) for the plant height, leaf area, number of branches, and the chlorophyll index, respectively.

2- The interaction treatment between ground addition and spraying with humic acid (F2H2) gave the highest values for all growth traits (106.

30 cm, 61.

30 cm2, 57.

80 Spad unit) for the plant height, leaf area, and the chlorophyll index, respectively