* Assuming that other limiting factors (e.g. water deficiency) are missing ,, the application of inorganic nitrogen provides the vine with an easily available form of , nitrogen and consequently increases the nitrogen in plants which is usually found by analyzing the stems.
· The effect on , growth rate on grape production and composition depends on nitrogen nutrition of the plant before nitrogen is applied to the vineyard.
There are many factors that can affect the nitrogen nutrition of the vine. These include the variety and/or the underlying (Ough et al. 1968a , Christensen 1984 , Huang and Ough 1989 , Stines et al. * , the site , the climate and soil (Huang and Ough 1989) the cultivation practices such as soil management (Bell et al. 2000). 1979 , Maigre and Aerny 2001 , Spring 2001) , the backbone system (Kliewer et al. 1991, Miele et al. 2000) , the mutual shading of vegetation (Smart et al. * 1988, Perez-Harvey and Witting 2001) , the temperature in the vegetative wall (Ewart and Kliewer 1977) , the form of nitrogen , the time and amount of application (Kliewewr 1971 , Bell et al. 1979 , Chang and Kliewer 1991 , Peacock et al. 1991 , Spayd et al. 1994, Bell and Robson 1999 , Conradie 2001). , In summary, the reaction of the vine to specific care or to a set of imposed conditions and the consequent effects on the composition of the grape are the result of a series of interactions between genetic characteristics , environmental factors and cultivation practices .
* The initial amount of nitrogen in , vine plants will determine how they will react to the application of nitrogen fertilization. This will trigger a series of processes that will directly or indirectly affect the final composition of the grape.
· The effect on , growth rate on grape production and composition depends on nitrogen nutrition of the plant before nitrogen is applied to the vineyard.
Source: Bell S-J and P.A. Henschke , 2005. Implications of nitrogen nutrition for grapes , fermentation and wine. Australian Journal of Grape and Wine Research 11 , 242-295
