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KMID : 1041219720140010001
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Journal of Sericultural and Entomological Science
1972 Volume.14 No. 1 p.1 ~ p.7
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Study on the Cause of Die-bark of Shoot in the Mulberry Field in the Reclaimed Hill Land in Korea
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Ryu Keun-Sup
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Abstract
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Recently, young mulberry trees grown in the reclaimed hill land are frequently attacted by the die-bark and the buds of the trees developed poorly. In order to learn the cause of the injury mentioned above available boron content in the soils and the bark of young shoots have been analyzed. The results are as follow; Available boron content in the soil of the damaged mulberry fold was 0.3-0.20 ppm, against 0.39-49 ppm in that of healthy mulberry field, and boron in the bark of the damaged trees was 10.63-12.99 ppm, and 18.42-21.02 ppm in that of the healthy trees. The organic matter content and available boron content in soils showed a highly significant possitive correlation. The moisture content in percent in the soil of the damaged mulberry held was 11.16 and 14.22 in that of healthy mulberry field.
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