Unveiling student photography at Adelaide Botanic Garden
11 July 2024
A group of extremely talented photography students from Brighton Secondary School recently visited Adelaide Botanic Garden tasked with capturing a series of photographs.
Date posted: 08 November 2013
If you have visited our barley crop lately, you will notice it is not quite 100%. Unfortunately, our plants have two different fungal diseases - Net Form of Net Blotch (NFNB) and leaf rust. These diseases are specific to barley crops and are quite common in barley crops around the world. Luckily treatment is relatively easy... To help manage the situation we called in our resident “Crop Doctor”, Dr Hugh Wallwork, who works as a Cereal Crop Pathologist with SARDI.
Dr Wallwork explained that the diseases spread easily via airborne spores which travel in wind currents, and when they land on healthy, susceptible barley plants they penetrate into the leaves causing infection. These spores must have travelled a long way to reach our little plot!
NFNB causes brown markings (lesions) on the leaf which progress into streaks along and across the leaf blade (usually running along with the veins). These markings can create a net like pattern (hence the name NFNB). The leaves also become yellow. This ‘chlorosis’ indicates the plant tissue is dying from the stress of the disease.
If you have a look at the photo gallery, you will notice another photo of plant disease. Along with the fungal diseases, our plants also have a virus - barley yellow dwarf virus (BYDV). BYDV is transmitted by aphids, which, after feeding on the plants, transfers the virus into the leaves where it multiplies and blocks the plumbing of the plant (the phloem), resulting in yellow damaged leaves. Unfortunately there is no treatment for this disease except to kill the aphids and prevent further spread to other plants. This season has been bad for aphids with a cool summer last year allowing them to survive in large numbers during the hot months and early rains allowing the surviving aphids to find fresh green plants after their autumn flights from perennial pastures.
So... after a few hard knocks and a bit of treatment, our plants appear to be doing well. Let’s hope we get back on track now for a good finish to our season!
11 July 2024
A group of extremely talented photography students from Brighton Secondary School recently visited Adelaide Botanic Garden tasked with capturing a series of photographs.
15 March 2024
The Board of the Botanic Gardens and State Herbarium is very pleased to announce that the Director of the Botanic Gardens and State Herbarium of South Australia, Mr Michael Harvey, has been elected as the new Chair of the Council of Heads of Australian Botanic Gardens.