Robust and resilient – Skyfall leads Agrii’s wheat sustainability index

Skyfall has taken top place in the first-ever sustainability ratings published by Agrii for today’s 34 leading winter wheats.

The ratings are designed to help growers pick varieties that offer the greatest agronomic strength with the least production risk and environmental impact.

They are provided as part of the 2020 Agrii Advisory List which complements the AHDB Recommended List, providing extra analyses and statistically-robust agronomic data from the company’s extensive national and regional variety testing programme.

“This is no criticism of the RL,” stresses Agrii head of agronomy, Colin Lloyd. “We are looking at performance under commercial farming regimes rather than primarily genetic potential.”

The sustainability scores are calculated from separate ratings for 11 key characters – resistance to the three main foliar diseases, lodging (treated and untreated); orange blossom midge; yield resilience and consistency; grassweed competitiveness; specific weight and latest optimum sowing date.

These ratings are weighted according to their importance in offering performance reliability, management flexibility and the potential for reducing pesticide use and overall cost/tonne. They are then added together, giving a maximum current sustainability score of 37.

Individual wheat scores range from a high of 30 to a low of 14, with an average of 21.

“The s