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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Porovnání ruční a mechanizované defoliace a hodnocení vlivu na kvalitu hroznů
 Krupica, Zdenek
The diploma thesis process current literature dealing with partial deleafing around grapes during vegetation period with manual and mechanized method and its impact on sugar and acid level in grapes. Deleafing the plant around the grapes during vegetation season may lead to higher quality of the grapes. It is, however, necessary to know basic deleafing rules. An excessive deleafing leads to overexposing the grapes. Such exposure causes negative effects, for example sunburn. Optimal deleafing (1-3 leaves and shoots around the grapes) exposes the grapes in an ideal way and they are warmed. The warming reduces the malic acid level and allows better sugar production. Mechanized deleafing of the grape area is quicker and faster. Unfortunately with this method grapes might be damged which often leads to fungal diseases. The manual method is very time consuming but it comes with careful way of deleafing. A variety sensitive deleafing of grapevine is recommended. Weather and station are also important factors. The most importnant factor is the date of deleafing. The work in wineyard demands manpower and it is time consuming. Still it pays off as this diploma thesis shows.
Detailed record
Vliv odlistění révových keřů na regulaci cukernatosti a kyselin hroznů
 Krupica, Zdenek
The bachelor thesis process current literature dealing with partial deleafing around grapes during vegetation period and its impact on sugar and acid level in grapes. No own experiment was made. Deleafing the plant around the grapes during vegetation season may lead to higher quality of the grapes. It is, however, necessary to know basic deleafing rules. An excessive deleafing leads to overexposing the grapes. Such exposure causes negative effects, for example sunburn. Optimal deleafing (1-3 leaves and shoots around the grapes) exposes the grapes in an ideal way and they are warmed. The warming reduces the malic acid level and allows better sugar production. A variety sensitive deleafing of grapevine is recommended. Weather and station are also important factors. The work in wineyard demands manpower and it is time consuming. Still it pays off as this thesis shows.
Detailed record

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