The effect of spraying with zinc and salicylic acid on the physiological characteristics, productivity and quality of the wheat crop

This field experiment was carried out at the Sulaimani Agricultural Research Center in the Bakrajo/Sulaymaniyah Governorate, which is located in northern Iraq in 2020-2021 with the aim of knowing the effects of salicylic acid and zinc foliar application on the physiological characteristics, productivity, and quality of the wheat crop. The bread wheat Triticum asetivum L. (Sulaimani2) was used in this study under the influence of application factors, with four concentrations of salicylic acid (S0), non-activation, (S1) spraying the vegetative with 100 ppm, (S2) spraying the vegetative with 200 ppm, and (S3) spraying the vegetative with 300 ppm. Also, spraying the same treatments with three concentrations of zinc (Z0), non-activation, (Z1), spraying the vegetative with 50 ppm, and spraying the vegetative with 100 ppm. Conducted in a factorial experiment with a randomized complete block design (RCBD) and with three replications, each of which included the factorial coefficients for the combination of the study workers, which were randomly distributed to the experimental units in duplicate and the results showed that the activation treatment (S3), (Z2) and the interaction between them which are the highest concentration of salicylic acid and zinc were significantly superior in most studied characters to the other activation treatments. Also, other activation treatments had positive effects and were superior in most studied characteristics compared to non-sprayed treatments.