Upper leaf necrosis in oriental lilies: A calcium deficiency disorder

Upper leaf necrosis in oriental lilies: A calcium deficiency disorder

Oriental lily growers, especially growers of Star Gazer, are familiar with upper leaf “burn’. Characterised by curled, distorted or dead upper leaves, the disorder is found in greenhouse-grown Oriental hybrid lilies worldwide. We call this problem “upper leaf necrosis”, or … Continued
New RIRDC ‘Access to Pesticides’ document

New RIRDC ‘Access to Pesticides’ document

A new RIRDC document ‘Access to pesticides – An explanation for minor industries’ is now available and contains: Sources of the latest pesticide registrations and permits. Information on the APVMA Minor-use Permit System as an avenue for farmers/industries to access … Continued
Five Misconceptions about Growing

Five Misconceptions about Growing

Addresses misconceptions involving mixes and substrates, misconceptions regarding the efficacy of chemicals, misconceptions about watering practices, misconceptions about controlled release fertilisers (CRFs) and, last but not least, misconceptions about water pH and its effect on soil pH.
Phytophthora diseases of cutflower crops – Part 1

Phytophthora diseases of cutflower crops – Part 1

In this first of a two-part report on Phytophthora root rots, Dr Aileen Reid (Development Officer Horticulture, Dept of Agriculture, WA) looks at the symptoms of the disease. Background Phytophthora root rot is the most common soil-borne disease causing plant … Continued
Myrtle rust fact sheet

Myrtle rust fact sheet

Myrtle rust was first detected in Queensland in December 2010. It is a serious fungal disease and part of the eucalyptus/guava rust complex. This group of pathogens affects plants belonging to the Myrtaceae family including Australian natives like bottle brush … Continued
Disease Management

Disease Management

Being familiar with the normal growth of a crop is a “must” in knowing when there might be a disease or an environmental factor affecting the crop.
Phytophthora diseases of cutflower crops – Part 2

Phytophthora diseases of cutflower crops – Part 2

In this second part of a report on Phytophthora root rots, Dr Aileen Reid (Development Officer Horticulture, Dept of Agriculture, WA) looks at disease management and control methods. Disease management It is extremely difficult to eradicate Phytophthora from an infested … Continued
Controlling leaf blackening in protea

Controlling leaf blackening in protea

Leaf blackening is a major problem for the cut flower Protea industry. Leaves often show symptoms of blackening as soon as 3 days after harvest. Presence of the disorder significantly decreases the vase life of the flowers as well as … Continued