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�X�- 8�lE�;���v~��\@�n玴J���� ޜw�U��ٮ�fC"�r��v,�eoQ��DĿ���B;�[�:~rW7���e s�v���m%A��Qb�m��x�V���ԃ>���{��R��5�e�����*j��� f�52���|���G�,���~{lPn�. Rhizosphaera Needlecast T he fungus Rhizosphaera kalkhoffii causes premature needle drop on spruce and pines. 0000004818 00000 n
sp., results in purple to brown discoloration of scattered needles and eventual needle cast (needle drop) (Figure 1). Needle Cast Symptoms & Signs Needle cast disease, caused by the fungus Rhizosphaera sp., results in purple to brown discoloration of scattered needles and eventual needle cast (needle drop) (Figure 1). /H [ 1231 528 ]
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Symptoms develop on older needles and on lowermost branches first, and then progress upward. <<
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Rhizosphaera needle cast, a fungus disease caused by Rhizosphaera kalkhoffii, is primarily a disease of blue spruce (Picea pungens) trees in New Mexico, though it can affect other conifers, such as pon-derosa pine, Japanese black pine, and Douglas fir. /Filter /FlateDecode
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Spruce and coniferous trees are susceptible to environmental, insect and disease problems that can cause the trees to discolor, lose needles and possibly die. 0000046719 00000 n
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