Black currant, Kazakhstan, 2023, Fe20

CROP: Black currant, Tamerlan variety

PRODUCT: Fe20 (foliar application)

YEAR:  2023

COUNTRY: Kazakhstan

APPLICATION:

  1. Control. NPK background.
  2. Background NPK + Fe20. Foliar application: 1st - after flowering, 2nd - 14 days after the first application, product consumption - 2.0 kg/ha, working solution consumption - 800 l/ha.
  3. Background NPK + Fe20. Foliar application: 1st - after flowering, 2nd - 14 days after the first application, product consumption - 2.5 kg/ha, working solution consumption - 800 l/ha.
  4. Background NPK + Fe20. Foliar application: 1st - after flowering, 2nd - 14 days after the first application, product consumption - 3.0 kg/ha, working solution consumption - 800 l/ha.

Trial plants — 15 pieces, observed plants — 5 pieces, trial repetitiveness — four times. 

RESULT:  

  1. Yield increase compared to control with NPK background: 15.63-143.75%.
  2. The yield increase resulted from improvements in yield structure: average cluster weight increased by 71.9%, the number of berries per cluster increased by 40.8%, and the number of bunches per plant increased by 21.6-38.4%.
  3. Quality indicators improved: ascorbic acid content increased by 3.9-5.1%, total sugar content increased by 5.1-9.1% (in absolute values), and acidity decreased by 0.04-0.06% (in absolute values).
  4. The maximum result was achieved with a double application at a 3.0 kg/ha dose.
  5. All yield increases exceeded the experimental error and were statistically significant.
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  • Young plants and/or fresh leaves
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  • After flowering
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