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New clover-safe herbicide approved

An exciting new clover-safe herbicide from Corteva Agriscience, ProClova® XL, has been approved by Pesticide Registration and Control Divisions (PRCD) and will be presented to the Irish market by Whelehan Crop Protection.

With both environmental and financial challenges, there has never been so much interest in growing home-grown proteins, while also minimising the use of artificial fertilisers. Clover plays an important role in this regard.

That’s what makes this new authorisation secured by Corteva, a merger of Dow AgroSciences, Pioneer and DuPont, significant. With an annual R&D spend of $1.3 billion, there are few other companies able to fund the discovery and development of a new herbicide, particularly one safe to clover.

It typically takes 10 years to bring a new active ingredient to market from discovery to product launch. In ProClova XL, the new active ingredient is called Rinskor™ or florpyrauxifen-benzyl.

ProClova XL gives much better control and is more consistent and reliable in its effect on established docks than the current standard. It also has a much wider weed spectrum than other clover-safe herbicides when spraying newly sown leys. 

Robin Bentley, Category Marketing Manager at Corteva Agriscience, says: “To develop a weed control solution safe to both grass and clover which can be used on newly sown leys for seedling weed control as well as on bigger perennial weeds in established grassland reflects the outstanding technology this product represents.

“Today’s herbicides are developed to have increasingly favourable environmental profiles, and Rinskor active is a prime example. It has a reduced environmental impact because it breaks down rapidly in soil, water and the tissue of tolerant plants, such as grassland and rice. It has a low dose rate compared to many other herbicides and its ecological profile has earned Rinskor several international awards, including a Green Chemistry Challenge Award.”

Chris Maughan, Technical Manager at Whelehans, says: “ProClova XL will resonate widely as many newly sown leys are planted and then swamped with weeds which limit the ley’s potential on both quantity and quality of forage. The product should be available from April and we look forward to sharing more details soon.”

Information about ProClova XL can be found at


About Corteva

Corteva, Inc. is a publicly traded, global pure-play agriculture company that provides farmers around the world with the most complete portfolio in the industry - including a balanced and diverse mix of seed, crop protection and digital solutions focused on maximising productivity to enhance yield and profitability. With some of the most recognised brands in agriculture and an industry-leading product and technology pipeline well positioned to drive growth, the company is committed to working with stakeholders throughout the food system as it fulfils its promise to enrich the lives of those who produce and those who consume, ensuring progress for generations to come. Corteva Agriscience became an independent public company on June 1, 2019 and was previously the Agriculture Division of DowDuPont. More information can be found at

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Useful Information

Media Contact: 
Laura Bowyer, Reverberate Public Relations
Tel: +447979 142159

Corteva Technical Hotline:
Tel: +44 800 689 8899