VARIATION IN GROWTH AND SALT RESISTANCE INDEX OF SWEET BASIL (Ocimumbasilicum L.) UNDER FOLIAR APPLICATION OF SPIRULINA EXTRACT AND SALINE WATER IRRIGATION STRESS

Document Type : Original Article

Authors

1 Horticulture D., Agric. Fac., Zagazig Unv.

2 Hort. Dept., Fac. Agric., Zagazig Univ., Egypt.

Abstract

In order to study the effect of different Spirulinaplatensis extract ratesas (0.0, 2, 4 and 6 ml/l) under different saline water irrigation concentrations (0.0, 1000, 2000 and 3000 ppm) a pot experiment was established during 2022/2023 and 2023/2024 seasons. This experiment was conducted in net greenhouse at Horticulture Department roof, Faculty of Agriculture, Zagazig University, Egypt. Saline water irrigation concentrations were distributed in main plot while Spirulina platensis extract rates were arranged in sub plot. Effect of these treatments on plant growth parameters and salt resistance index (SRI) of sweet basil was determined.  The results showed a significant reduce in all studied growth parameter values (plant height, number of branches/plant and herb fresh and dry weights per plant) as well as salt resistance index with increasing the levels of salinity, but an opposite impact was detected with increasing the Spirulina extract rateat both cuts during both seasons. The maximum values of plant growth and SRI were achieved with the treatment of algae extract at 6 ml/l combined with irrigating with the lowest saline water irrigation concentration (0.0 ppm) which followed by irrigating with saline water at 1000 ppm comparedwithall other investigated combined treatments.

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Zagazig Journal of Agricultural Research
Volume 52, Issue 2
March and April 2025
Pages 285-293

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