Comparison of the effect of fish fertilizers, humic acid and urea on radish crop yield

Abstract

This research aimed to evaluate the effect of different types of fertilizers (fish, humic acid and urea) on the yield of radish (Raphanus sativus) crop. Five experimental groups were used, each composed of five samples, totaling 25 plants. The groups were assigned according to the type of fertilizer applied: control (no fertilizer), 100% fish fertilizer, 100% humic acid, mixed fertilizer (50% fish and 50% humic acid) and 100% urea. The results indicated that fish fertilizer was the most effective, showing the highest values ​​in all growth and production variables. The final averages obtained were as follows: 7.52 mm in stem width, 101 mm in plant height, 7 leaves, 55.8 mm in leaf width, 3.6 days in germination time, 60.42 mm in radish polar diameter, 45.44 mm in equatorial diameter, and 62 g in average radish mass, with a total mass of 310 g for the five samples treated with fish fertilizer. The estimated yield was approximately 24,720 kg per hectare. Additionally, humic acid and its combination with fish fertilizer outperformed industrial fertilizer in terms of yield. In conclusion, fish fertilizer proved to be the most effective alternative for radish cultivation, with a high potential to optimize production in a sustainable manner.