Yield and internal quality of potatoes in relation to N fertilizer
Nitsch, A.; Klein, K.
Kartoffelbau 34(2): 30-34
In trials on sandy soils between Hamburg and Bremen, there was a low correlation coeff. between potato tuber yield and N fertilizer levels. Other contributing factors such as degree of N mobilization in the soil are discussed together with the influence of different levels of N fertilizer (both inorganic and organic) on quality factors including percentage starch, total N content, vitamin C content and amount of respiratory CO2. Results from a number of sources are quoted.