EFFECT OF FOLIAR APPLICATIONS ON ARJUNA (TERMINALIA ARJUNA) SEEDLINGS UNDER DROUGHT AND SALT STRESSES.

Autor: Abdel-Twab, Shohra, Saadawy, Faisal, Gomaa, Salah Abdel-Aziz, Soliman, Amira Sh., Abbas, Mohamed S.
Předmět:
Zdroj: Plant Archives (09725210); Oct2020, Vol. 20 Issue 2, p73-85, 13p
Abstrakt: It was necessary to find out the means to mitigate the negative effects of global high temperature and diminishing of freshwater resources through the utilization of some promising chemical agents, such as salicylic acid and extracts of both moringa and seaweed. Accordingly. The study was carried out on transplants of Terminalia arjuna in the two seasons of 2016 - 2017. Results were as the following: Treatment 1 (control) + combination 1 (16 days irrigation interval + 2000 ppm salinity) for Na% in both seasons. Treatment 1 (control) + combination 3 (4 days irrigation interval + 6000 ppm salinity) for Cl in both seasons. Treatment 7 (moringa extract 10.0%) + combination 3 (4 days irrigation interval + 6000 ppm salinity) for number of leaves in the 1st season only. Treatment 8 (seaweed extract 0.25%) + combination 3 (4 days irrigation interval + 6000 ppm salinity) for chlorophyll "a" and carotenoids content in the 2nd season only. Treatment 9 (seaweed extract 0.50%) + combination 3 (4 days irrigation interval + 6000 ppm salinity) for carbohydrate% in the 1st season only. Treatment 10 (seaweed extract 0.75%) + combination 1 (16 days irrigation interval + 2000 ppm salinity) for proline content in both seasons. Treatment 10 (seaweed extract 0.75%) + combination 3 (4 days irrigation interval + 6000 ppm salinity) for plant height and chlorophyll "b" content in both seasons; for chlorophyll "a" content and carotenoids content in the 1st season only; and for number of leaves and carbohydrate% in the 2nd season only. In order to get the best results in all vegetative characters in addition to chlorophyll "a", carotenoids., it is recommended to adopt the combination of 4 days irrigation interval + 6000 ppm salinity and apply seaweed extract 0.75%. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index