摘要:

Die effek van die gebruik van swawelvrye teenoor swawelbevattende bemestingstowwe op die swawelstatus van 'n Mangano-grond van Vaalharts, is met behulp van 'n potproef ondersoek. Waar swawelvrye bemestingstowwe gebruik is was gebreksimptome na die derde snysel reeds duidelik sigbaar by lusern. Daarbenewens het die gebruik van swawelbevattende bemestingstowwe 'n betekenisvolle vermeerdering in die oesmassa sowel as in die swawelkonsentrasie veroorsaak.

ISSN:0257-1862    

DOI:10.1080/02571862.1987.10634236

出版商:Taylor&Francis Group    

年代:1987

数据来源: Taylor

摘要:

The fermentation of dark air-cured tobacco depends on its fermentation ability. Dry spells during the growth period can contribute towards unripe tobacco with poor fermentation ability. By blending such tobacco at a 1:1 ratio with tobacco of good fermentation ability, the whole stack could be fermented to a satisfactory end-product. The chemical changes during fermentation of the blended tobacco's resulted in a substantial increase in pH and a corresponding decrease in total volatile bases as opposed to very little change in the stack tobacco with poor fermentation ability only. In addition, the concentrations of malic and citric acids decreased by 95 and 65% respectively during fermentation of the blended tobacco's.

ISSN:0257-1862    

DOI:10.1080/02571862.1987.10634237

出版商:Taylor&Francis Group    

年代:1987

数据来源: Taylor