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Infectious disease, inflammatory and immune responses

Nutrient toxicities:
Chloride toxicity – Caused by saline water and soil conditions; plants wilt when soil moisture seems adequate; test and monitor irrigation water quality; plants vary in their tolerance to salinity.
Manganese toxicity – Yellowing of margins of older leaves; poor root development; favoured by acidic, waterlogged soil; lime soil to correct pH.
Ammonium toxicity “jelly butt” – Poor emergence followed by wilting and death of seedlings; browning of the central root tissue; favoured by excess ammonium from fertiliser or poultry manure in cold wet soil.
Physiological disorders of vegetable crops include:
Tipburn (physiological/nutritional) – a result of a calcium transport problem within the plant.
Blossom end rot (physiological/nutritional) – caused by a deficiency of calcium or insufficient calcium uptake and translocation to growing points.
Riciness of cauliflower.
Gomasho (grey speck) of cabbage and Chinese cabbage.
Measles on smooth skinned melons and cucumbers.
Source of information and related tools:
Global nitrogen fixation distribution – a plant ecology mystery
Molybdenum deficiency in plants
Soil acidity has an affect beyond the paddock acid soil action leaflet no. 8
Soil fungi
Targeted inputs make sense
Why phosphorous is important?
Leafy Asian vegetables and their nutrition in hydroponics
Healthy soil management
Indicators of soil health
Reducing nitrate and nitrite concentrations in vegetable crops
Composting On-Farm
Improving soil health for yield and profit in vegetables
Soil health and fertility (NSW DPI)
Vegetables – soil management (NSW DPI)
Soil (Vic DPI)
Soil management (Vegetables WA)
Vegetable fertiliser guide for Top End Gardeners (NT Government)
Incitec Pivot Fertiliser Fertfacts
Pest and Disease Management (Vegetables WA)
National IPM newsletter
Integrated disease management in greenhouses
Integrated pest management in greenhouses
Insect pests of cucurbit vegetables
Pests, Beneficials, Diseases and Disorders in Cucurbits
Pests, Diseases, Disorders and Beneficials in Greenhouse Vegetables: Field Identification Guide
Insect pest guide: a guide to identifying vegetable insect pests and their natural enemies in the dry tropics