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Movement for the Various Coated and Uncoated Potassium(K) Fertilizers in the Turfgrass Soils of Golf Course  

Kim, Hong-Ki (Department of Agricultural Chemistry, Chungbuk National University)
Han, Seok-Soon (Department of Agricultural Chemistry, Chungbuk National University)
Kwon, Sang-Moon (Department of Agricultural Chemistry, Chungbuk National University)
Kim, Hee-Jung (Department of Agricultural Chemistry, Chungbuk National University)
Woo, Sun-Hee (Department of Crop Science, Chungbuk National University)
Lee, Moon-Soon (Department of Industrial Plant, Chungbuk National University)
Baek, Ki-Tae (Department of Environmental Engineering, Kumoh National University)
Lee, Bong-Gyu (Chungbuk Institure of Health & Environment Research)
Lee, Sang-Sung (Eumseong-gun, Agriculture Technology & Extension Center)
Kim, In-Su (Yeongdong-gun, Agriculture Technology & Extension Center)
Chung, Keun-Yook (Department of Agricultural Chemistry, Chungbuk National University)
Publication Information
Asian Journal of Turfgrass Science / v.23, no.1, 2009 , pp. 133-142 More about this Journal
Abstract
This study was initiated to evaluate the K leaching potential in the green soils and K uptake by the turfgrass in the golf course using the K fertilizers. The turfgrass, Floradwarf bermudagrass(Cynodon dactylon L. $P_{ERS}$.) was planted and grown in the mixture of sand and peat moss in this lysimeter study. Eight representative K fertilizers, such as, monopotassium phosphate (MKP), KCL, $K_2SO_4$, $KNO_3$, CKCl, $CK_2SO_4$, $CKNO_3$, and 0-20-20(liquid) were used in this study. Based on the total K quantity of leachate collected during the whole 12 weeks, 0-20-20 is the K fertilizers the most contributing to the leaching of K, then MKP, the second, KCL, the third, and finally $KNO_3$ are K fertilizers contributing to the K leaching. However, most amount of K applied and collected in the lysimeter were leached during the first period of two and four weeks, compared to that of K leached during the second period of six, eight, ten, and twelve weeks. Application of CKCL and $CK_2SO_4$ producted the largest amount of total dry matter, then MKP and KCL, $KNO_3$ and $CKNO_3$, 0-20-20 in second group. However, except $K_2SO_4$, most K fertilizer sources such as MKP, KCL, $KNO_3$, CKCL, $CK_2SO_4$, $CKNO_3$, 0-20-20 showed the largest amount of K uptake, except $K_2SO_4$. Therefore, based on the K leaching, dry matter production, and plant K uptake, it appears that the coated fertilizers, CKCL, $CKNO_3$, and $CK_2SO_4$ are the environmentally sound fertilizers recommended in the turfgrass green soil of golf course.
Keywords
dry matter; golf course; K fertilizer; leaching; lysimeter; plant uptake; turf grass soils;
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