UNSUR HARA MAKRO PUPUK ORGANIK CAIR YANG TERBUAT DARI CAMPURAN AIR LIMBAH TEMPE DENGAN VARIASI DOSIS DAUN LAMTORO YANG BERBEDA

The Macro Nutrient Content of Liquid Organic Fertilizer Made From a Mixture of Tempe Waste Water With Varying Doses of Different Lamtoro Leaves

Abstrak

The utilization of tempe waste water as a liquid organic fertilizer, along with the addition of different doses of lamtoro leaves, can enhance the macro nutrient content in the resulting liquid organic fertilizer. This research aimed to identify the most effective lamtoro leaf dosage for augmenting macronutrient levels in the liquid organic fertilizer derived from tempe waste water. The study was conducted at the Compost House of the Faculty of Agriculture and Animal Science, University Sultan Syarif Kasim Riau, spanning from December 2022 to February 2023. A Completely Randomized Design (CRD) approach was employed, featuring five treatments, namely: control (without lamtoro leaves), 300 g of lamtoro leaves, 600 g of lamtoro leaves, 900 g of lamtoro leaves, and 1200 g of lamtoro leaves, each repeated four times. The parameters under investigation included nitrogen (N), phosphorus (P), potassium (K), and pH levels. The results indicated that the addition of lamtoro leaves to liquid organic fertilizer derived from tempe waste water led to an increase in macronutrient levels, including N, P, K, and pH. The best results were achieved with a 1200 g dose of lamtoro leaves, resulting in N at 0.30%, P at 0.23%, K at 0.29%, and a pH of 7.54. However, these values did not meet the quality standards set by the Ministry of Agriculture in 2019 for N, P, and K parameters, which were established at 0.82%.