Pertumbuhan Dan Hasil Ubi Jalar Dengan Pemberian Pupuk Kalium Dan Triakontanol

Sweet potatoes growth and yield with application potassium fertilizer and triakontanol growth rate regulator. Sweet potatoes is a food that has a source of carbohydrate and contain a variety of nutrients. The other alternative to increase sweet potatoes productivity were application potassium fertilizer and triakontanol growth rate regulator. Potassium fertilizer is expected to increase growth, production and quality of tuber. Triakontanol growth rate regulator who has the ability to improve plant root system, to improve nutrient uptakes optimization. The objective of the research was to study growth and production of sweet potato with application potassium and triakontanol, was conducted in Pasar 1 Tanjung Sari, Medan from March to July 2012. This research used randomized block design factorial with two factors. First factor is potassium fertilizer dose that is 0, 1.5, 3, and 4.5 g KCl / plant, the second factor is triakontanol dose that is 0, 0.0005, 0.0010, and 0.0015 g / l water. The result of the research showed that potassium were significantly effect with plant's length parameter on 7 week after planting with the highest average of 25.83 cm at dose 1.5 g KCl / plant. And triakontanol non significant effect to the growth and yield of sweet potatoes, and non interaction both of potassium and triakontanol to all parameter