THE EFFECT OF HUMIC ACID AND ZEOLITE ON GROWTH AND PRODUCTIVITY OF RICE PLANT (Oryza sativa L.) CIHERANG VARIETY)

ABSTRACT
EDI BEJO UTOMO, this research is entitled " The Effect of Humic Acid and Zeolite on
the Growth and Productivity of Rice Plants (Oryza sativa L.) Varietal Ciherang " Advisor
I. Nanik Lutfiyah, S.Si., M.Si.and II..Muchtarom, S.P., M.Si.
Rice (Oryza sativa L.) is an annual crop belonging to the Gramineae family. This study aims
to determine the effects of humic acid and zeolite on the growth and productivity of rice plants.
The research was conducted on paddy fields in Ngrimbi Village, Bareng Subdistrict, Jombang
Regency, from July to September 2023, using a factorial Randomized Block Design (RBD)
with two treatment factors: organic fertilizer composition (humic acid and zeolite) and fertilizer
dosage (1 ton/ha, 1.5 tons/ha, and 2 tons/ha).
The results showed that humic acid had a more dominant influence than zeolite on plant growth.
The combination of humic acid and zeolite treatments also improved soil health, enhanced
plant tissue structure, and supported optimal nutrient distribution. Indicators such as the
number of tillers, panicle length, grains per panicle, and plant height were significantly affected
by efficient photosynthesis. High productivity was also supported by controlled pest and
disease (OPT) conditions. Overall, the study revealed a positive correlation between humic
acid and zeolite treatments with the growth and yield of rice plants.
Key words : Rice, Humic Acid, Zeolite