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CRT Catalogue Pull-out Feature : CRT Winter 2014 - Tech Update
TransformTM is a new systemic insecticide with a novel mode of action for controlling sap-feeding (sucking) insects making it effective against those which have become resistant to other insecticides. It is also a very suitable rotational partner to use with other chemistries. Sap-feeding insects such as aphids, thrips and whiteflies can suck the profitability right out of your crop; however, it’s not just the direct effect on thrift and crop yield that is the problem. Aphids also transmit viral diseases, such as Barley Yellow Dwarf Virus, in wheat and barley, which can leave the crop unable to yield to its potential. Aphids feeding on maturing canola distort new growth in leaves, flowers and pods and their honeydew excretions encourage the growth of sooty mould. Transform is now registered for use in Australia on many species of aphids in numerous crops, including the Barley Yellow Dwarf Virus vectors; oat aphid (Rhopalosiphum padi), corn aphid (R. maidis), grain aphid (Sitobion miscanthi) and rose grain aphid (Metopolophium dirhodum) in cereals. Trials have demonstrated that Transform, when applied for control of aphids, can result in a significant reduction in the transmission of aphid vectored plant diseases. Transform is soft on beneficial insects, such as lacewings and ladybirds, making it an excellent fit in Integrated Pest Management programs where beneficial insects help control pests. It also has a favourable ecotoxicology profile, low mammalian toxicity and is not persistent in the environment. In 2013, Dow AgroSciences commissioned a small-scale trial at Broomhill, WA which had high populations of green peach aphid. Transform was applied at 100mL/ha and compared with Pirimor® (500g/ha) and Dimethoate (800mL/ha). Treatments were applied in 96L/ha of water with flat fan nozzles through a precision small-plot sprayer. Aphid efficacy was assessed by counting the number of aphids on 15 leaves per plot 8, 15 and 22 days after application. Transform gave excellent control of green peach aphids at 100mL/ha with rapid knockdown and extended residual control up to 22 days after application. Results show (Fig 1) that superior control was provided by Transform compared to applications of Pirimor and Dimethoate and no treatment caused injury to canola. The trial population was suspected of being resistant to the carbamate and organophosphate insecticides but it was effectively controlled by Transform. In this replicated trial, plots treated with Transform gave the highest canola yield equating to an extra $118.80/ha for the grower (using a canola price of $540/tonne). Taking application costs into consideration for all treatments, Transform still remained the most profitable choice. Factoring in the longer term benefits derived from reducing the impact on beneficial insects, coupled with reducing resistance selection pressure, the value to the grower is significant in both the short and long-term. TM Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Give’em the Sucker Punch with Transform Insecticide Untreated canola plant showing a high level of infestation by green peach aphids. (Photo: S. Richardson) Treated canola plant 11 days after crop sprayed with 100mL/ha Transform. Note absence of aphids. (Photo: M. Welsh, Dow AgroSciences) 120 100 80 60 40 20 0 Aphids (per 15 leaves) Untreated TransformTM 100mL/ha Pirimor® 500g/ha Dimethoate 1L/ha 22 days after application 15 days after application 8 days after application Treatment Fig 1. 2013 Dow AgroSciences Broomhill Trial Results, WA.
CRT Autumn 2014 - Tech Update
CRT Spring 2014 - Tech Update