There are two types of netblotch differentiated by the symptoms: a net form and a spot form. Both occur in NZ but the net form is more common. Look out for: Net like symptoms, especially in 2nd year barley crops. Risk Factors: Infected stubble or seed. Cool, moist conditions. Netblotch disease, caused by Pyrenophora teres, poses a growing threat to global barley production, highlighting the need for sustainable disease manageme. T = % infection in the treatment. Netblotch rating under glasshouse-grown barleyNet-spot blotch reaction was recorded according to Tekauz, (1985) scale of 1–10 was used for netblotch (Fig. Blotches in barley. Key points. • There are 2 forms of netblotch, net form netblotch (NFNB) and spot form.Top 6 netblotch control options 1. Grow resistant varieties. 2. Do not keep planting seed from infected crops. 3. Do not plant barley into barley stubble from. How netblotch affects barley yield and quality. Netblotch is a very important disease of barley.Treat infected seed with an effective seed treatment. Use fungicides to control netblotch at the T1/T2 timings. Use mixtures to combat fungicide resistance. for the control of barleynetblotch disease revealed 18.88 q/ha and 10.73 q/ha, respectively, compared to fungicide. unsprayed treatment. The grain yield and dry biomass obtained from plots treated by the fungicides were higher. Where it is possible to develop strategies of treatment according to need for barley leaf stripe and loose smut, there is a need for further work in defining meaningful seed infection thresholds for netblotch. While netblotch is a bigger problem in winter barley than spring, especially after a mild winter, there is a risk to spring barley from seed-borne infection. That can be remedied with seed treatments, so any farm-saved seed should be tested. It provides cost-effective treatment for the broadest spectrum of barley diseases. Independent trials have demonstrated that Fandango consistently delivers greater yields than standard treatments in barley. If the main focus of the disease control programme is netblotch then upgrading... Suitability of the field trial data required it to meet the following criteria: sourced from a barley field trial on net-blotch undertaken in an Australian agro-ecological zone, a stubble inoculated trial, barley yield and variance between treatment replicates... [68] Martin, R. A. (1985). Disease progression and yield loss in barley associated with netblotch, as influenced by fungicide seed treatment. Can. J. PlantPathol.7, 83–90. BarleyNetBlotchTreatment: How To Prevent NetBlotch On Barley Plants.How to Stop BarleyNetBlotch. While it may be too late to treat plants already infected with this fungal disease, the best method of control is prevention. Keywords: Pyrenophora teres; netblotch of barley; taxonomy; disease cycle; toxin production; control.Treatments such as burning the straw left in the fields after harvest or deep ploughing have prov-en effective in reducing netblotch (Jordan 1981; Gangwar et al. 2018; Abebe 2021). Treatments with the fungicide mixtures epoxiconazol + metconazole and spiroxamine + tebuconazole + triadimenol showed the least effectiveness in disease control, as well as yield increase. Keywords: Fungicides; Chemical control; Netblotch; Barley.
