In what could be a game changer for the management of aphids and PRSV, Australia’s first-ever Efficon spray was applied earlier this year at Rapisarda Enterprise at Clare near Ayr in Queensland on a block of vegetative watermelons and pumpkins.
Managing vectors of Papaya Ringspot virus (PRSV) has been a long-standing challenge for the melon industry. For many growers, the virus is brought in with the arrival of aphids that transmit the virus via their saliva while feeding on plants.
The chemistry that is currently available works to control the individuals after saliva has been exchanged between the aphid and the plant leading to a dead aphid but also the virus already being transmitted.
Nutrien Ag Solutions national horticulture manager Peter Melville said investment in developing of crop protection that will directly impact growers’ yields is crucial for the industry to continue moving forward.
“Nutrien understands we have a part to play in ensuring we support new developments making their way to growers. Our team are trusted advisers for growers for the latest and most relevant information to help growers make an informed decision.
“The release of Efficon signals an investment in research and development from BASF and a commitment to maintaining the productivity and profitability of horticultural growers. We’re excited to make this product available to our growers and look forward to seeing the positive effect it has,” Mr Melville said.
Nutrien Ag Solutions Ayr agronomist Eilis Walker said the timing of Efficon’s application is critical to the control of aphids to reduce the likelihood of PRSV transmission.
“If we can apply Efficon early in our chemical rotation we provide the plant with the protection it needs to stop the aphid transmitting PRSV.”
She said the need for Efficon is evident when looking at the decline in productivity and profitability when plants are infected with PRSV.
“In field, cucurbits of all varieties infected with PRSV will have shorter more stunted root structure, deformed leaf structure and an inability to set and fill fruit. Fruit that is retained and filled will often have rings on the fruit skin.
“Anywhere that aphids occur in association with cucurbits there is a severe risk of virus transmission and a decline in productivity and profitability.”
Rapisarda Enterprises farm manager Lynk McClelland was impressed with the compatibility of the product and how well it mixed with the other chemicals in the spray recommendation.
“It is great to see the investment that BASF have made into the management of aphids in the release of a new product.
“Without the advice of Nutrien and the dedication that has been shown by the Nutrien Ayr branch we may not have had the opportunity to trial the product and may never of used the product on our own accord,” Mr McClelland said.
