PENGARUH ZEOLIT DAN PUPUK K TERHADAP KETERSEDIAAN DAN SERAPAN K TANAMAN PADI DI LAHAN PASIR PANTAI KULONPROGO

Agung Abdillah. The Effect of Zeolite and K Fertilizer To Availability and K Uptake At Seashore Sandy Land Kulonprogo. Underguided by Ir. Jauhari Syamsiyah, MS and Ir. Damasus Riyanto, MSc. Agriculture Faculty Sebelas Maret University Surakarta. This experiment has been done in rice field land of Siliran V village, Galur district, Kulonprogo regency, Yogyakarta. The study was started from April 2007 to August 2007, and the aim of this experiment is to know effect of K fertilizer dan zeolite application at sandy soil of south coastal, area Kulonprogo. Research design was used Randomized Completely Block Design (RCBD) . With 2 factor as main plots and sub plot combination. Every treatment was repeated 3 times, Therefore they have 10 treatment combination. The result of study was shown that application of K fertilizer and zeolite were given significant effect to chemical and fertility soil properties. Which were soil pH, CEC, K total, K available nutrient and potassium uptake by plant. There is no significant effect on interaction of K and zeolite application. The increasing of potash fertilizer was given high significant to K uptake. While zeolite application was given. Significant effect also to the improving chemical soil properties. Whereas, increasing of K fertilizer and zeolite application were not given significant effect to the dry matter yield (biomass) Keywords : K fertilizer , zeolite, K availability, K uptak