DuPont Pioneer, a business unit of the DowDuPont Agriculture Division, has introduced more than 50 new soyabean varieties for US and Canadian farmers to use in the 2018 season.

The firm said on 13 December it would offer a total of 56 new high yield potential A-Series soya products in addition to its existing 110 varieties.

“This new 2018 class builds upon the performance of the A-Series soyabean line-up, which has the highest yield potential of any line we’ve ever introduced,” said DuPont Pioneer North America region leader Judd O’Connor.

“Not only do we have the yield-leading line-up with A-Series soyabeans, but also the most comprehensive soyabean offering to meet grower needs for weed, pest and disease control,” she added.

The new class included nearly 40 new varieties with Roundup Ready 2 Xtend technology, which made seeds resistant to Monsanto’s glyphosate-based Roundup herbicide and had an average yield advantage of 2.7 bushels/acre in 2017, according to DuPont comparisons.

Out of the Roundup resistant beans, nearly half were rated good or better for white mould tolerance and five were also resistant to the sulfonylurea herbicide.

Ten new soyabean brands featured the LibertyLink gene, which brought the total of A-Series beans with the gene to 14.

The majority of the new varieties contained native tolerance to pre-plant or pre-emergence application of the protoporphyrinogen oxidase (PPO) herbicides, sulfentrazone and saflufenacil.

DuPont Pioneer also said 51 of the new varieties had native resistance to the soyabean cyst nematode, 41 were resistant to Phytophtora root rot, 12 had strong tolerance to sudden death syndrome and five had good chloride sensitivity ratings.

An additional five soyabean types in the 2018 class had Pioneer’s Plenish high oleic genes.