Effect Inhibitor Packlobutrazol of Against Type and Summed Dominance Ratio (SDR) Weeds in Potato (Solanum tuberosum L.) Plant

The research aimed tostudy determine the effect of plant growth regulator and dominance Paclobutrazol against this type of weeds in potato fields. Weed identification is done by using squares method using a rectangular plot with a size of 1 x 1 m and then the data were analyzed using the formula SDR. The results obtained are 21 species of weeds that grow at the age of 0 WAP (before if the land), 4 WAP (before application Paclobutrazol) and 8 WAP (after application Paclobutrazol). Dominace most in before if the land is Pennisetumpurpupoides with a value of SDR 41.10%, in the period of 4 WAP Chips are Ageratum conyzoides L dominace's with a value of SDR 24.58% and weeds Setariabarbata land dominace's research in the period 8 WAP Chips with value SDR 26.78%.