Spring drilling guide assumes establishment at 80-90pc
IN THE Teagasc Spring Cereal Drilling Guide 2014, the assumed establishment is in the range of 80-90pc.
This takes into account the excellent seed this year and assumes a return to normal spring conditions, but we always advise people to adjust this figure to field conditions and your own TGWs.
The barley figures are based on the target of growing and harvesting 900-1,000head/m2.
Tillering capacity of varieties, drilling date, fertility and weather all influence this figure but initial seeding rate probably has the biggest influence.
The standing power of varieties needs to be given due thought, as lodging risk increases as plant numbers increase.
Finally, a little background information on the Department variety trials.
All these trials are drilled at a seed rate of 320seeds/m2 and are given the inputs required to achieve high yields.
Lodging scores are from plots given an extra bag of nitrogen and, if possible, left standing beyond the ideal harvest date so as to test straw to its limits.
The figures are robust and reliable enough to drill a similar seed rate on farm, as in the seed rate guide here.