Original scientific paper
https://doi.org/10.5513/JCEA01/21.2.2576
Possibility of increasing early crop potato yield with foliar application of seaweed extracts and humic acids
Tomasz DZIUGIEŁ
; Main Inspectorate of Plant Health and Seed Inspection, Voivodeship Plant Health and Seed Inspection Service, Żółkiewskiego 17, 05-075 Warszawa-Wesoła, Poland
Wanda WADAS
orcid.org/0000-0001-7676-4136
; Siedlce University of Natural Sciences and Humanities, Institute of Agriculture and Horticulture, B. Prusa 14, 08-110 Siedlce, Poland
Abstract
Under climate change conditions, biostimulants play an important role in plant adaptation to abiotic stress. This paper analyses the effect of the seaweed extracts Bio-algeen S90 (Ascophyllum nodosum) and Kelpak SL (Ecklonia maxima) and humic and fulvic acids HumiPlant (leonardite extract) on early crop potato yield and yield components. Three very
early potato cultivars Denar, Lord and Miłek were tested. Biostimulants did not affect the number of tubers produced by potato plants but increased the tuber weight per plant and average tuber weight and, as a result, the tuber yield. The yield-increasing effect of biostimulants depended on the hydro- thermal conditions during potato growth. Bio-algeen S90 and Kelpak SL produced better results in a warm and very wet growing season, whereas HumiPlant produced better results in a year with lower air temperature and with drought periods during potato growth. The use of biostimulants in early crop potato culture assured higher yield under abiotic stress conditions, and also contributed to improving its marketable value by an increase in the productivity of the marketable-size tubers and, simultaneously, decreasing the share of large tubers with a diameter above 50 mm. The tested potato cultivars showed a similar response to the biostimulants applied.
Keywords
biostimulants; early potato; tuber number per plant; tuber weight; tuber yield
Hrčak ID:
239369
URI
Publication date:
18.6.2020.
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