Response of Magnesium Content of Forages to potassium Application in grassland

칼륨 시용에 따른 목초중 마그네슘함량의 계절변화

  • Sangdeog A. Kim (Dept. Animal Resources, Joongbu University) ;
  • Shigekata Yoshida (University Farm, Faculty of Agriculture, Nagoya University) ;
  • Mitsuaki Ohshima (University Farm, Faculty of Agriculture, Nagoya University) ;
  • Ryosei Kayama (University Farm, Faculty of Agriculture, Nagoya University)
  • Published : 1993.06.01

Abstract

Forages were sampled from an orchardgrass (Dactylis glomerata L.) meadow during two years in order to know both the characteristics of spring grass, which differ from those on other seasons, and the effects of potassium application on potassium. magnesium and water contents of forages. Their is a seasonal difference in the response of mineral and water contents to potassium. Minera] contents in forage possibly show their extremes in the early spring such as April on the present experiment. Namely, the K content of the forage was the highest, while the Mg content was the lowest in April. Other facts worthy to be described were the highest water content and the sensitive response of it to the K fertilization in spring time.

봄철에 자라는 목초를 다른 계절의 목초와 비교하면 어떤 특성이 있는지, 또 그 시기의 칼룸질 비료의 시용이 목초의 수분 또는 마그네슘 함량에 어떤 영향이 있는가를 알아보고자 오차드그라스 (Dacctylis glomerala L.) 채초지에서 시험했는데, 그 결과는 칼륨 시용에 따른 무기질과 수분함량에 계절차이가 뚜렷하다는 것이었다 본 시험에서 봄철 (4월)에 생육하는 목초의 무기질함량은 다른 계절보다 큰 변화를 나타냈으며, 칼륨함량은 높고 마그네슘함량은 가장 낮았다. 또한 봄찰 목초의 수분함량은 높았으며, 칼륨 시용에 의해 민감한 변화를 보였다.

Keywords