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AGROTECHNOLOGY

Physiological Leafroll

This symptom is associated with crop stress. Drought, temporary water logging and nutrient imbalances may cause leaves to roll upward.The leaves of the varieties Superior and Andover often roll when the plants are under stress. Plants showing…

AGROTECHNOLOGY

Chemical Damage

Spots with bleached appearance on leaves caused by a mixture of pesticides and nutrientsapplied in hot and humid weather. Top-dressed nitrogen fertilizers often burn foliage if applied when the weather is hot and humid. This is most…

AGROTECHNOLOGY

Higher Total Canadian Potato Storage Holdings

On December 1, 2022, total Canadian potato storage holdings were somewhat higher than in 2021, but they were still 11.7% higher than the three-year average. Given the short crop in the US, demand is generally strong for…

AGROTECHNOLOGY

Air Pollution

Potato plants may be injured when exposed to high concentrations of various air pollutants. Injury can range from leaf damage to death of the plant. Severity of theinjury depends on environmental conditions, the concentration of the pollutants,…

AGROTECHNOLOGY

Northern Root-knot Nematode (Meloidogyne hapla)

Pathogen. The only root-knot nematode that has been detected on potatoes in Ontario is the northern root-knot nematode. Males are worm-like, and femalesare pear-shaped.This nematode causes small galls to develop on the roots, and lateral roots to…

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