EFEKTIVITAS KONSENTRASI IBA DAN JENIS PUPUK KALIUM TERHADAP HASIL TANAMAN UBI KAYU (Manihot esculenta Crantz.)

Abstract

Research on the effectiveness of auxin concentrations and types of potassium fertilizer on cassava yields was carried out from January to October 2020 in Banaran Hamlet, Keditan Village, Ngablak District, Magelang Regency at an altitude of 1135 meters above sea level. The research was carried out in the field using a factorial experiment (3x4) arranged in a completely randomized block design (RAKL). This study consisted of two treatment factors and was repeated three times as a block. The first factor, the type of potassium fertilizer: without fertilizer, ZK, KNO₃. The second factor, auxin concentration: 0 ppm, 50 ppm, 100 ppm, 150 ppm. The results showed that the concentration of 150 ppm auxin and ZK potassium fertilizer had optimum effect on the growth of cassava (Manihot esculenta Crantz).