Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Pea harvest is nearing and we are seeing yellowing and poor growth in many pea fields due to wet conditions. Peas do not perform well in soils that are worked when they… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu We have seen several cases of magnesium deficiency in vegetables already in 2019. Magnesium (Mg) is considered a secondary macro-element and is essential for plant growth. It is a component of chlorophyll,… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu As soil pH drops, availability of magnesium and calcium declines while manganese availability increases, often to toxic levels. Below pH of 5.2, the chemistry of the soil changes and aluminum is released… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Each year, the ASHS has an annual meeting bringing together scientists working with specialty crops (vegetables, fruits, ornamentals). This year the meeting is in Washington DC. The following are some notes from… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu I recently looked a several vegetable plantings that showed severe damage from foliar fertilizers. The extended cloudy weather set up conditions where the plants were more susceptible to salt injury (thinner leaves… Continue Reading
