earticle

영어

The influence of Mg treatment on the growth and mineral elements of tall fescue (Festuca arundinacea Schreb.) 'Justice’, perennial ryegrass (Lolium perenne L.), 'Paragon', creeping bentgrass (Agrostis palustris Huds), 'Penn-A1' and Kentucky bluegrass (Poa pratensis L.) 'Nassou' were investigated in the greenhouse from the 2nd of October to the 4th of December in 2006. The minimum temperature was 13.5±1.4℃ and the maximum one was 30.7±1.6℃ during the period of the experiment. The Mg treatment ranged from 0 me/L to 8me/L in solution. Tall fescue 'Justic' showed the longest shoot length at Mg 2me/L, and had the highest number of tillers at Mg 1me/L and 2me/L, but there was no difference between treatments, It showed the best fresh weight and dry weight of the shoot at Mg 2me/L, but there was no difference between treatments. It showed the longest root length at Mg 1me/L, and had the best fresh weight and dry weight of the root at Mg 4me/L, and there was difference between treatment. Perennial ryegrass 'Paragon' showed the longest shoot length and had the highest number of tiller at Mg 2me/L. It showed the best fresh weight and dry weight of the shoot at Mg 4me/L, and there was difference between treatments. It showed the longest root length at 2me/L and had the best fresh weight and dry weight of the root at Mg 4me/L and the was difference between treatment. Kentucky bluegrass 'Nassou' showed the longest shoot length at Mg 4me/L, but there was no difference between treatments. It showed the highest number of tiller at Mg 2me/L, and had the best fresh weight and dry weight of the shoot at Mg 4me/L, and there was difference between treatment. It showed the longest root length at Mg 4me/L, and had the best fresh weight and dry weight of the root at Mg 2me/L, and the root length was difference between treatment. In the case of creeping bentgrass 'Penn-A1', it showed the longest shoot length at Mg 4me/L, and had the highest number of tillers at Mg 2me/L, It showed the best fresh weight and dry weight of the shoot and the root at Mg 4me/L, and there was differece between treatments. Aa application rate of Mg concentration higher, the content of mineral Mg within shoot increased, while the content of Ca within shoot decreased, and there was difference between treatments. The concentration of Mg treatment had no effect on the content of mineral N, P, K, Fe, Mn within shoot.