| dc.description.abstract | The consumption of sweet corn in Indonesia continues to increase, but
domestic production has not yet met the demand. Efforts to improve productivity
can be made through proper fertilization. The use of inorganic potassium
fertilizer such as KCl needs to be balanced with environmentally friendly
alternatives, such as liquid organic fertilizer (LOF) made from pineapple peel
waste. Tests showed that pineapple peel waste contains C-organic 1.11%, N-total
0.17%, P₂O₅ 0.05%, K₂O 0.25% and pH 4.06. This study aims to evaluate the
effects of LOF application on sweet corn growth and to understand the plant's
response to the combination of LOF and chemical potassium fertilizer doses. The
research was conducted on Tengku Amir Hamzah Street, Langkat Regency, Binjai
Utara District, Binjai City, North Sumatra. The site is located at coordinates
3°39'28.9 "N and 98°27'31.4 "E, at an altitude of ±30 meters above sea level
(masl), from January to March 2025. The experiment used a randomized block
design with two treatment factors and four replications. The first factor was LOF
application (0; 4,000 l/ha), and the second factor was potassium fertilizer (KCl)
application (0; 150; 200 kg/ha). The results showed that LOF application at 4,000
l/ha significantly affected leaf area and plot weight. Potassium fertilizer
application significantly affected plant height and leaf area. No interaction was
observed between LOF and potassium fertilizer treatments | en_US |
