The Effect of Potassium Addition To The Vegetative Growth of Mutated Sugarcane Genotypes
Abstract
Sugarcane varieties of mutation results have the potential yield yield of 15.57; 16.83 and 18.58 percent. The release of new varieties of sugar cane must be balanced with the right method or cultivation technique. One component of an appropriate plant cultivation method is the dose of fertilization. This experiment was carried out to determine the optimum dose of Potassium (K) needed by sugar cane varieties BL mutation results in each genotype. The experiment was arranged using a completely randomized design (CRD) 2 factorial pattern with the first factor being sugarcane with 3 levels (M2, M3, M4) and the second factor was potassium (K) dose of 5 levels with an increase of 10% (K0 = 130 kg K / ha, K1 = 143 kg K / ha, K2 = 156 kg K / ha, K3 = 169 kg K / ha, K4 = 182 kg K / ha), each treatment combination used a sample of 3 plant units and with 3 replications so in total 135 plants are used. Data from the experimental results were analyzed using analysis of variance and to find out the optimum dose of potassium fertilizer performed by quadratic polynomial regression analysis. The results of the analysis of variance showed significantly different interactions on the variable number of chlorophyll, number of leaves and number of tillers. A single mutant factor (M) and a single factor of potassium dose (K) showed significant differences in the variable values of leaf sucrose. M4K3 treatment produced the highest value on the leaf chlorophyll variable, number of leaves and number of tillers. Potassium (K) fertilizer dosages to reach the highest leaf sucrose values M2 (5.090%), M3 (5.175%) and M4 (5.181%) were 53.416 kg K / ha, 53.785 kg K / ha and 60.917 kg K / ha respectively .
