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¥°. Introduction
Organic has strong power to include nutrient and water. So, It play important role about nutrient storage and water tank. It also form layers gathering soil that improve physical ch-aracter of soil. Organic of soil stopped lost of soil by rainning and reduced damage from drought. It also flourish soil microbe that promotes solubilization of nutrient. Actually, it makes a gap in soil to increase times of remain agricultural pesticides.
The suitability of including organic for cultivation of jinseng is 15~25g/kg ( 25~35g/kg is possible range). It is shortage that less15g/kg ,but more 35g/§¸ is excessive to cultivated ginseng.
1. Principle
Organic matter Content °è»ê¹ý
¨ç Walkley-Black Method
´ÙÀ½ °è»ê½ÄÀ» ÀÌ¿ëÇÏ¿© À¯±â¹° ÇÔ·®À» ±¸ÇÑ´Ù.
Organic C(%)¡ë
(B : Blank , T : FeSO4 ÅõÀÔ·® (ml), N : FeSO©þÀÇ ³óµµ)
Organic matter(%)¡ë
¨è Loss of weight on ignition
´Ù¡¦(»ý·«)
¥±. Materials and Methods
¨ç 2mm ä·Î Åä¾çÀ» °Å¸¥ ÈÄ 105¡É, 48hour °ÇÁ¶ÇÑ´Ù.
¨è 5gÀÇ ¹«°Ô¸¦ Àç°í ȸȷο¡¼ 550¡É, 2 hour °¡¿ÇÑ´Ù.
¨é ȸȷο¡¼ ²¨³»¾î ¹«°Ô¸¦ ÃøÁ¤ÇÑ´Ù.
¨ç 2mm ä·Î Åä¾çÀ» °Å¸¥´Ù.
¨è Åä¾çÀ» 0.5g äÃëÇÑ´Ù.
¨é äÃëÇÑ ½Ã·á¸¦ »ï°¢Çöó½ºÅ©¿¡
¨ê H2SO4¸¦ 20ml ¾¿ ÷°¡ÇÑ´Ù.
¨ë 30ºÐ Á¤µµ ¹æÄ¡ ÈÄ
¨ì FeSO4À» »ö±òÀÌ ºÓ°Ô
¥². Results
1) Walkley-Black Method
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