GROWTH AND MARKETABLE POTATO ( SOLANUM TUBEROSUM L.) TUBER YIELD IN RESPONSE TO FOLIAR APPLICATION OF SEAWEED EXTRACT AND HUMIC ACIDS

. The effect of foliar application of seaweed extracts Bio-algeen S90 ( Ascophyllun nodosum ) and Kelpak SL ( Ecklonia maxina ) and humic and fulvic acids from leonardite HumiPlant on plant growth and marketable tuber yield of early potato crop was investigated. The application of seaweed extracts resulted in a faster rate of plant growth. Bio-algeen S90 affected potato growth more than Kelpak SL. The plants grew taller and produced a greater above-ground biomass. With the use of HumiPlant, stems were shorter but had a similar weight to plants in the cultivation without biostimulant. Biostimulants caused enlargement of the assimilation leaf area, but had no effect on the weight of leaves, leaf weight ratio (LWR) or leaf area ratio (LAR). The yield-increasing effect of biostimulants depended on hydrothermal conditions during potato growth. Seaweed extracts produced better results in a warm and a very wet growing season, whereas humic and fulvic acids produced better results in a cool growing season with drought during the tuber growth period.

[1]  G. Romanov,et al.  Auxins in potato: molecular aspects and emerging roles in tuber formation and stress resistance , 2019, Plant Cell Reports.

[2]  M. Begum,et al.  Role of seaweed extract on growth, yield and quality of some agricultural crops: A review , 2018, Agricultural Reviews.

[3]  W. Wadas,et al.  EFFECT OF TITANIUM ON GROWTH OF VERY EARLY-MATURING POTATO CULTIVARS , 2017 .

[4]  A. Alsadon,et al.  Water Regimes and Humic Acid Application Influences Potato Growth, Yield, Tuber Quality and Water Use Efficiency , 2016, American Journal of Potato Research.

[5]  S. Jain,et al.  Evaluation of seaweed extract on growth and yield of potato. , 2016 .

[6]  B. Prithiviraj,et al.  Seaweed extracts as biostimulants in horticulture , 2015 .

[7]  Davey L. Jones,et al.  Humic and fulvic acids as biostimulants in horticulture , 2015 .

[8]  B. Cwalina-Ambroziak,et al.  Effect of biostimulators on yield and selected chemical properties of potato tubers. , 2015 .

[9]  T. Lenartowicz,et al.  Analysis of hydrothermal conditions and their impact on early potato yields , 2015 .

[10]  R. Bulgari,et al.  Biostimulants and crop responses: a review , 2015 .

[11]  S. Suh,et al.  Tuber growth and quality of potato (Solanum tuberosum L.) as affected by foliar or soil application of fulvic and humic acids , 2014, Horticulture, Environment, and Biotechnology.

[12]  Louise M. Nelson,et al.  Agricultural uses of plant biostimulants , 2014, Plant and Soil.

[13]  F. Olivares,et al.  Physiological responses to humic substances as plant growth promoter , 2014, Chemical and Biological Technologies in Agriculture.

[14]  Ghasem Rahimi Darabad.  Research article STUDY THE RELATIONSHIPS BETWEEN YIELD AND YIELD COMPONENTS OF POTATO VARIETIES USING CORRELATION ANALYSIS AND REGRESSION ANALYSIS AND CAUSALITY , 2014 .

[15]  M. Noori,et al.  Influence of humic acid on increase yield of plants and soil properties , 2014 .

[16]  H. Sharma,et al.  Plant biostimulants: a review on the processing of macroalgae and use of extracts for crop management to reduce abiotic and biotic stresses , 2013, Journal of Applied Phycology.

[17]  H. U. Asad,et al.  Impact of foliar application of seaweed extract on growth, yield and quality of potato (Solanum tuberosum L.) , 2012 .

[18]  K. Shinozaki,et al.  Cytokinins: metabolism and function in plant adaptation to environmental stresses. , 2012, Trends in plant science.

[19]  T. Sarhan.  EFFECT OF HUMIC ACID AND SEAWEED EXTRACTS ON GROWTH AND YIELD OF POTATO PLANT (Solanum tubersum L) DESIREE CV. , 2011 .

[20]  J. Craigie,et al.  Seaweed extract stimuli in plant science and agriculture , 2011, Journal of Applied Phycology.

[21]  K. Verheyen,et al.  Application of Humic Substances Results in Consistent Increases in Crop Yield and Nutrient Uptake , 2009 .

[22]  B. Arslan.  Relationships Among Yield and Some Yield Characters in Potato (S. tuberosum L.) , 2007 .

[23]  J. Ledent,et al.  The effect of drought and cultivar on growth parameters, yield and yield components of potato , 2003 .

[24]  P. Kuisma.  The effect of foliar application of seaweed extract on potato , 1989 .