JOURNAL OF AGRICULTURE AND APPLIED BIOLOGY 2021, Vol. 2, No. 2, 105 - 113 http://dx.doi.org/10.11594/jaab.02.02.05 How to cite: Adajar, R. R. & Taer, E. C. (2021). Application of foliar biofertilizers with and without NPK in cultivating white-gluti- nous corn. Journal of Agriculture and Applied Biology, 2(2): 105 - 113. doi: 10.11594/jaab.02.02.05 Research Article Application of foliar biofertilizers with and without NPK in cultivating white-glutinous corn Roselyn R. Adajar 1 , Erma C. Taer 2 * 1 Department of Education Panabo City, Davao del Norte, Panabo City, Philippines 2 Surigao State College of Technology, Surigao del Norte, Surigao City, Philippines Article history: Submitted 14 June 2021 Accepted 06 July 2021 Published 05 October 2021 Keywords: Fermentation Green corn Liquid fertilizer Organic fertilizer White-glutinous corn Abstract Organic farming used fermented fruit and plant juices as foliar ferti- lizers to enhance crop production. However, the usage is usually lim- ited to sole fruit or plant fermentation with chemicals and other growth enhancers. The use of various fruits, plants, fish products, and Cyanobacteria with Mycorrhizal fungi combinations to enhance white-glutinous corn has not yet been explored. This trial investi- gated the different fermented fruits (FFJ), plants (FPJ), fishes (FAA), and commercial Cyanobacteria with Mycorrhizal fungi (Rhizocote) in single-use or combination with NPK to enhance the growth, yield, and Return on Investment (ROI) of cultivating white-glutinous corn. The application was 2 tbsp L -1 water for single use of fermented bioferti- lizers while 1 tbsp L -1 water for fermented foliar with NPK combina- tions. The results showed that the height of corn was not significant among treatments in 30 and 60 days after planting (DAP). However, corn treated with Rhizocote alone was the tallest in 45 DAP and had longer days to reach 50% corn tasseling. White-glutinous corn treated with Rhizocote + NPK had the highest number of ears. The rest of the treatments yielded a comparable number of ear sizes rang- ing from 1.27 to 1.37 cm. The highest yield of marketable green ears accounted for 7.45 t ha -1 with Rhizocote + NPK, while the lowest was observed when the white-glutinous corn was fertilized alone with FFJ at 2.93 t-ha. The Rhizocote + NPK obtained the highest R.O.I. of 263.68% compared to other treatments. Thus, the recommendation is to use 1.00 tbsp L -1 water commercial Rhizocote + recommended NPK for a productive and profitable white-glutinous corn. More in- vestigation using different agri-fishery products fermentation at higher concentrations are needed in culture of white-glutinous corn for green ear production in various planting season. *Corresponding author: E-mail: ermataer@gmail.com Introduction Corn is an essential crop in Southeast Asia and is considered a valuable vegetable in most parts of India. Attention is now being paid to explore its potential in India for earning foreign exchange (Mohammadi et al., 2019). Thailand