Foliar Application of Seaweed Sap Enhances Growth, Yield and Quality of Maize in Eastern Himalayas

  • Jayanta LayekEmail author
  • Anup Das
  • Arup Ghosh
  • Dibyendu Sarkar
  • Ramkrushna Gandhiji Idapuganti
  • Juri Boragohain
  • Gulab Singh Yadav
  • Rattan Lal
Research Article


Maize (Zea mays L.) productivity in hilly regions of North Eastern Region (NER) of India is very low due to limited use of manures and fertilizers. Under such situation, seaweed sap can become an alternative as it is an organic bio-stimulant. Experiment with extracts from marine algae Kappaphycus alvarezii (K sap) and Gracilaria edulis (G sap) was conducted during 2012 and 2013 to assess the efficacy of seaweed saps on growth, productivity and quality of maize and their role in economizing the chemical fertilizer requirement. Results revealed that K or G sap @ 10% and above concentrations along with 100% recommended dose of fertilizer (RDF) recorded significantly higher plant height, dry matter, chlorophyll content, yield attributes and yield of maize compared to control (water spray). The nitrogen (N) and protein content in grain was the highest under 15% K sap + 100% RDF followed by 15% G sap + 100% RDF. Application of K or G sap at 10% concentrations + 100% RDF also significantly increased micronutrient (copper, zinc, manganese and iron) concentrations in maize grains. The available nitrogen, phosphorous and potassium content in soil was recorded to be lowest under 7.5% K sap + 50% RDF. Thus, foliar application of 10% K or G sap along with 100% RDF is recommended for sustainable maize production in NER of India and other ecosystems elsewhere.


Chlorophyll Hill ecosystem Maize Protein Seaweed sap Yield 



The authors are thankful to the Director, ICAR Research Complex for NEH Region, Umiam, Meghalaya, India and Director, CSMCRI, Bhavnagar, Gujarat, India for providing necessary facilities and financial support to conduct the field and laboratory studies.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© The National Academy of Sciences, India 2017

Authors and Affiliations

  1. 1.Division of Crop ProductionICAR Research Complex for North Eastern Hill RegionUmiamIndia
  2. 2.Waste Research Discipline, Central Salt and Marine Chemical Research InstituteBhavnagarIndia
  3. 3.Bidhan Chandra Krishi ViswavidyalayaKalyaniIndia
  4. 4.ICAR Research Complex for North Eastern Hill Region, Tripura CentreLembucherraIndia
  5. 5.Carbon Management and Sequestration Centre (C-MASC) Ohio State UniversityColumbusUSA

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