CROP: Grapes, "Pamyat Dombkovskoy" variety

PRODUCT: Seed Treatment (foliar application)

YEAR:  2023

COUNTRY: Kazakhstan

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APPLICATION:‍

1. Control. NPK background.
2. Background NPK + Seed Treatment. Foliar application: 1st - in the phase of 5-7 leaves, 2nd - in the early flowering phase, product consumption - 1.0 kg/ha, working solution consumption - 1000 l/ha.
3. Background NPK + Seed Treatment. Foliar application: 1st - in the phase of 5-7 leaves, 2nd - in the early flowering phase, product consumption - 1.5 kg/ha, working solution consumption - 1000 l/ha.
4. Background NPK + Seed Treatment Foliar application: 1st - in the phase of 5-7 leaves, 2nd - in the early flowering phase, product consumption - 2.0 kg/ha, working solution consumption - 1000 l/ha.

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Trial plots area – 40 m², observed plots area – 10 m². Trial repetitiveness — four times.

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RESULT:‍

1. Yield increase compared to control with NPK background: 17.0-78.0%.
2. The yield increase resulted from improvements in yield structure.
3. Cluster weight increased by 8.9-32.9 g, bush productivity by 25.9-74.1%, berry weight increased by 16.7-33.3%, and the number of bunches increased by 9.1-54.5%.
4. There was no clear trend in changes in quality indicators across variants. The variant with a double application of 2 kg/ha showed the best quality parameters (maximum dry matter content, total sugars).
5. The maximum yield result was achieved with a double application at a dose of 1.5 kg/ha.
6. All yield increases exceeded the experimental error and were statistically significant. 

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