Publications for:

pest = Phytophthora citricola
crop = Walnut/butternut (Juglans)
country = Italy

found 2 publications:

2003

First report of Phytophthora nicotianae and P. citricola associated with English walnut decline in Europe
Plant Disease (2003) 87 (3), p.315
publishers website - pestinfo wiki

Evaluation of root damage to English walnut caused by five Phytophthora species
Plant Pathology (2003) 52 (4), 491-495
publishers website - pestinfo wiki