4. Tinder or Apoplexy Parasite – Pests and Diseases of the Vine.

Yesca Vid. The tinder is a parasitic disease caused by fungi (Stereum hirsutum Per. y Phellinus igniarius Fr.) that penetrate the wood through major pruning wounds.
When temperatures rise rapidly, affected tissue can not compensate for evapotranspiration and intense part of the affected vegetation withers abruptly (water imbalance). This occurs rapidly especially in clay soils, deep and fresh, while slowly occurs in the siliceous or calcareous soils.

Symptoms and Damage produced by Tinder:

The symptoms are common to other diseases that occur affecting the circulation of the sap. It can manifest quickly or slowly.
  • Slowly: is more common and can affect the vegetation of one or more arms generally isolated strains. Symptoms usually begin in full bloom or already in the middle of summer is the appearance of discolorations internerval, and edges of the leaves, yellow in white varieties, converge and are drying in the center. The leaves eventually fall and clusters lose weight and can dry.
  • Quick way to apopléjica: usually occurs in the driest climates in summer. The strain of a vigorous vegetation begins to take a green-gray color and just wiping, partially or completely in a few days.
On the arms and trunks: cutting the trunk can be seen in the center yellow wood, surrounded by a zone of dark wood and healthy wood ring.

The symptoms described result in damage ranging from weight loss and sugar at harvest, until the death of one or more arms, strain or whole.

Media Strategy and Control.

Precautions pruning: control is recommended tinder:
  • Disinfection of pruning tools.
  • Trimming last strains affected.
Methods of chemical control: Today its use is prohibited, but it has always been controlled this disease with sodium arsenic.