Cold boost for pgr
Cold boost for pgr
GROWTH regulator chlormequats performance in cold weather can be enhanced by adding Arma adjuvant, Interagro reminds wheat growers.
Chlormequat needs a temperature of at least 8C (46F) to be fully effective, but the average UK March figure is 5.3C (41.5F), it notes. Dutch work for the firm in 1996 at 4C (39F) showed that adding Arma boosted uptake four-fold and outperformed Li700 adjuvant by 22.8%.
Typical cost is £5/ha (£2/acre).
Recommended dose is 0.1% of total spray volume. For a 200-litre/ha application that costs £5/ha (£2/acre).
Unit cost challenge
Fancy a shot at the £2000 top prize in the farmers weekly/BASF Unit Cost Challenge? A few minutes spent calculating your cost of production for winter wheat could put you in contention. See p67 for an entry form.