The effect of Azolla extract on vegetative growth indicators of three varieties of Barley (Hordeum vulgare L.)

Abstract

The field experiment was carried out on land belonging to a farmer in the Al Bandar area (3 km from the center of Samawah) during the 2022-2023 season to determine the effect of four levels of Azolla extract (45, 30, 15,0 liters ha-1) on three varieties. From barley (AXAD, Ibaa 99, Ibaa 265), the experiment was applied using a completely randomized block design according to the split-plot method and with three replications, with the varieties occupying the main panels and the Azolla levels in the secondary panels. The results showed that the level of 30 liters of ha-1 was significantly superior to the flag leaf area, the flag leaf content of chlorophyll, the length of the spike, and the number of branches per square meter, as it gave averages of (24.48 cm2), (44.63 SPAD), (5.82 cm), and (509.40 beaches m). 2) Sequentially. The results also showed that the Aksad variety was superior in the nitrogen content of the plant, the flag leaf’s chlorophyll content, the length of the spike, and the number of branches per square meter, and gave averages of (2.47%), (45.22 SPAD), (6.17 cm), and (512.50 Shatam-2), respectively, and the variety was superior. Fathers 265 in plant height and leaf area and gave two averages of (104.05 cm) and (23.33 cm2), respectively.