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Effects of foliar nitrogen, potassium and magnesium concentrations on the resistance of Scots pine seedlings to Scleroderris canker infection
Author(s) -
Ylimartimo Anneli
Publication year - 1991
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1991.tb00778.x
Subject(s) - scots pine , potassium , horticulture , inoculation , seedling , canker , dormancy , biology , magnesium , nitrogen , irrigation , resistance (ecology) , botany , pinus <genus> , agronomy , chemistry , germination , organic chemistry
Pinus sylvestris seedlings were grown in quartz sand and N, K and Mg were given in different ratios with the irrigation water. After growing season 50 % of the seedlings were inoculated with a conidial suspension of Gremmeniella abietina . The resistance of the seedlings to infection was studied by measuring the reduction of needle retention. K deficiency reduced the resistance. However, the effect of K was dependent on the amount of irradiance available in growth chamber after winter dormancy. In addition, deficient foliar K and Mg concentrations in combination, reduced the resistance of seedlings to infection.