Winds and rain play havoc with spraying
Published 31/05/2011 | 05:00
It is no wonder that weather discussions dominate farming conversations. The wind and rain of the past two weeks have played havoc with efforts to get spraying done.
Spring barley crops have struggled over the last number of weeks with the drought followed by a scorch brought on by the application of herbicides. In addition the delayed herbicide application has resulted in poorer weed control. A clean-up may be required in some cases and products such as Starane and Galaxy might be considered.
Much of the fertiliser has also only just recently kicked in. Crops that received a boost of liquid phosphorus or plant stimulant look to have recovered quicker.
Crops that had Hussar applied appear to have achieved some level of wild oat control. However, monitor crops closely as secondary tillers from the wild oat can emerge late.
Many spring barley crops have significant mildew present. The addition of a half rate of a mildewicide with the herbicide has paid off this year. The application of the T1 fungicide is now urgent if not already applied. Include either epoxiconazole or prothioconazole with a half-rate strobilurin and a mildewicide. Good value combinations of these active ingredients are available so shop around. A high rate of fungicide can be applied for less than €14 per acre.
Trace element deficiency is a major problem on most crops and the addition of a suitable trace element with your T1 fungicide is recommended.
In winter wheat, the head is emerging or fully emerged and all these crops should have by now received their T2 spray. The disease control appears to be fairly good in most crops inspected with the top three leaves clean. The fourth leaf has about 10-30pc septoria and low levels of mildew. The earlier addition of Talius or Flexity on heavy crops was certainly worthwhile.
Last week I noticed a number of crops of Triticale had very high levels of yellow rust present. This can be a devastating disease that spreads rapidly. Use a robust rate of a morpholine plus tebuconazole with a half rate strobilurin for persistency.