Abstract

ABSTARCTThe efficiency of soaking cotton cv. Giza 45 seeds in five concentrations of salicylic acid and potassium silicate (5, 10, 15, 20 and 25 mg L−1 against Rotylenchulus reniformis infection showed a significant (P < 0.05) improvement in the tested plant parameters that was distinct in soaked seeds in salicylic acid for 24 hours compared with potassium silicate in greenhouse (28 ± 5 °C). The application of concentration (20 mg L−1) stated the highest values of improvement of plant criteria, while high concentration (25 mg L−1) revealed the maximum reduction rates in the total nematode population for both potassium silicate and salicylic acid. Moreover, seed soaking in salicylic acid and potassium silicate achieved a considerable increment in nitrogen, phosphorus, potassium, phenol and chlorophyll contents in cotton leaves with changeable values.

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