CROP: Potato, “Reggae” variety

PRODUCT: Classic Plus (foliar application)

YEAR:  2023

COUNTRY: Kazakhstan

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APPLICATION:

1. Control. NPK background.
2. Background NPK + Classic Plus. Foliar application: 1st - at the stage of full emergence (plant height 15-20 cm), 2nd – at the budding phase, Classic Plus consumption – 1.5 kg/ha, working solution consumption – 300 l/ha.
3. Background NPK + Classic Plus. Foliar application: 1st - at the stage of full emergence (plant height 15-20 cm), 2nd – at the budding phase, Classic Plus consumption – 2.0 kg/ha, working solution consumption – 300 l/ha.
4. Background NPK + Classic Plus. Foliar application: 1st - at the stage of full emergence (plant height 15-20 cm), 2nd – at the budding phase, Classic Plus consumption – 3.0 kg/ha, working solution consumption – 300 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:

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1. Yield increase compared to control with NPK background: 24.3-56.51%.
2. The yield increase resulted from improvements in yield structure: the average number of large tubers increased by 53.3-86.7%, and medium-sized tubers number increased by 22.7-36.4%. The average mass of large tubers increased by 22.3-41.9%, and medium-sized tubers mass increased by 9.6-29.5%.
3. The harvest predominantly consisted of the medium-sized fraction (30-60 mm).
4. Quality indicators improved: vitamin C content increased by 1.0-2.1%, and the dry matter content increased by 0.4-0.8%.
5. The maximum result was achieved with a double application at a 3.0 kg/ha dose.
6. All yield increases exceeded the experimental error and were statistically significant.

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