Effectiveness of Several Ameliorant Sources for Increase NP Uptake and Sweet Corn Production on Sandy Soil

This research aims to determine the effectiveness of several ameliorants in increasing nitrogen and phosphorus uptake and the production of sweet corn plants (Zea mays L. var. saccharata) on sandy soil. The study utilized a randomized block design with five treatments and four replications, resulting in 20 treatment plots. The treatments tested were: A0: Control (no ameliorant), AA: Rice Husk Charcoal Ameliorant, AS: Cow Manure Ameliorant, AK: Compost Ameliorant, and AP: Organic Fertilizer "Subur" Ameliorant. The results showed that cow manure as an ameliorant significantly enhanced plant growth and productivity by improving nutrient availability in the soil. Cow manure ameliorant increased plant height, the number of leaves, biomass weight, and crop yields by boosting the concentrations of absorbable nitrogen and phosphorus. Additionally, cow manure ameliorant promoted mycorrhizal activity in the soil, contributing to soil fertility and improved soil structure. The increase mycorrhiza development also helped plants efficiently uptake nutrients and enhanced their resistance to environmental stress. Therefore, using cow manure as an ameliorant not only supports optimal plant growth but also contributes to increased sweet corn production.