| dc.description.abstract | This study was conducted to analyze the effects of NPK fertilizer and
biofertilizer, as well as their interactions, on the growth and yield of corn
(Zea mays saccharata Sturt). The research was carried out from April to August
2023 at Screen House, Faculty of Agriculture, Universitas Sumatera Utara, Medan.
The study used the Randomized Block Design (RBD) with two factors. The first
factor was NPK fertilizer with five treatment levels: 0, 75, 150, 225 and 300 kg/ha.
The second factor was biofertilizer with five treatment levels: 0, 375, 714, 1071 and
1429 kg/ha. The results indicated that NPK fertilizer significantly affected plant
height, leaf area, root fresh weight, root dry weight, and shoot fresh weight, with
the highest values observed at a dose of 300 kg/ha. Biofertilizer significantly
impacted plant height, stem diameter, leaf area, root fresh weight, root dry weight,
and shoot fresh weight, with the highest values at a dose of 1429 kg/ha. However,
the interaction between the two treatments at a soil pH of 4.9 did not have a
significant effect on all observed parameters, therefore, the use of a combination of
300 kg/ha (100%) NPK fertilizer and 1429 kg/ha (100%) biofertilizer is not yet
recommended. The combination of 300 kg/ha (100%) NPK fertilizer and 1429 kg/ha
(100%) biofertilizer resulted in a cob weight of 63 g/plant (4.7 tons/ha). | en_US |
