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유병서 한국농업정책학회, 한국축산경영학회 2000 농업경영정책연구 Vol.27 No.1
Of the many concequences resulting from differential rates of growth between sectors, the tendency for per capita or household income too diverge between the farm and non-farm sectors must receive policy consideration of the highest priority. To decrease the differential gap between sectors in terms of per capita income, farm household income should be increased by annual average rate of 6.5% during a 15 year period from 2001 to 2015. The present government financial investment for farm sector should be doubled to achieve the income parity between farm and non-farm sectors.
유병서,이민웅,이지열,최혜정 한국미생물학회 1982 미생물학회지 Vol.20 No.3
As a basic study to elucidate nutritional physiology and composition of synthetic medium of red rotting bacteria, Erwinia carotovora, of ginseng, the effects of hydrogen ion concentration, various kinds of carbon sources, nitrogen source, micrometallic salts and it's concentration on the gorwth of the bacteria were investigated and the results were as follows. Optimal pH in the basal medium for the growth of the bacteria was 6.5. After incubation the pH in culture media was neutralized. Among the various kinds of carbon sources, sucrose, glucose mannitol, but organic acids were not utilized effectively as nutrients. After incubation the pH turned acidic. Alanine as organic nitrogen sources nad ammonium sulfate as inorganic nitrogen promoted the growth, but L-valine and sodium nitrite were the least effective. Ferric chloride 1.0mg/dl and ferrous sulfate 100mg/dl were the most effective as micrometallic sources. Control and boric acid were the least effective. New synthetic medium based on the above results was follows ; Alanine 1.0g, $KH_2PO_4\;1.0g, \;sucrose\;30.0g, \;MgSo_4{\cdot}7H_2O\;0.5g, \;FeCl_3{\cdot}6H_2O\;1.0mg\;thiamine\;200{\gamma}g$, and distilled water 1000ml, pH6.5.