Saturday, March 23, 2019

Bullish start to New Year for region’s cereal crops

January 2, 2019 by  
Filed under Crops

Most arable crops are looking good as spring approaches but don’t be too complacent, says Richard Overthrow.

Now oilseed rape crops have sorted themselves out into those that survived and those that didn’t, most of us can be fairly bullish about all winter crops with spring just around the corner.

Cereal crops generally established well and faced no serious demons as autumn progressed. If any winter cereals remain to be sown, most winter wheat varieties can still be drilled. With winter barley, the fall-off in yield is severe and spring barley should be considered from now on.

In cereals, aphid numbers in-crop are still an unknown – as is the possible need for further treatment. If autumn treatments protected the crop up to early November, then it is safe to say no further treatment is necessary.

The dilemma lies in those crops sown in mid-October which would normally have emerged beyond the aphid flight window, but with good conditions emerged earlier than expected so may have attracted an aphid population.

Spring clean-up

We shouldn’t consider prophylactic use of insecticides but in a few cases the need for a spring clean-up of aphids which were uncontrolled in autumn can’t be ruled out.

If there are any applications of grass weed herbicides still to be made – including Broadway Star, or blackgrass products such as Hamlet or Atlantis – then look out for suitable weather windows to get them on as soon as is practical. Better opportunities will come along later in spring but the target weeds will be bigger and more difficult to control.

Oilseed rape crops may still show fresh infections of phoma, however any infections developing now are unlikely to affect yield as there won’t be sufficient time to form significant stem cankers. Any mild and wet periods from now on will encourage light leaf spot, however, so further treatment for this, at or even before stem extension, cannot be ruled out.

Cut-off dates

Favourable conditions at the end of autumn allowed applications of propyzamide or carbetamide to be applied to oilseed rape. If there are any treatments still to go on, the cut-off for Kerb (and Astrokerb) is the end of January. For Crawler, it is the end of February.

Oilseed rape crops can also be examined to determine canopy size. Almost every year some crops put on a lot of growth in autumn leading to orders for spring growth regulators in preparation, only to see canopies decimated by frosts, pigeons or other ills.

Thoughts will soon be turning towards spring drilling but next month is early enough for any of the crop options. Spring wheat and barley can be sown this month but only for logistics reasons: such early sowing will require more management and won’t give higher yield.

Spring oats should be held back until March, or late February at the earliest and in any situation where a spring cereal is employed in a grass weed campaign, sowing should not be considered for some time: late March onwards is more typical in these cases.

Spring beans can be sown this month as can any leftover sowings of winter beans.

Richard Overthrow is a regional agronomist with NIAB TAG, the UK’s largest independent agronomy organisation with several research centres in East Anglia. For more details, call 01223 342495.

studiopress

barbour pas cher barbour pas cher barbour pas cher barbour pas cher barbour pas cher golden goose saldi golden goose saldi golden goose saldi golden goose saldi golden goose saldi doudoune moncler pas cher doudoune moncler pas cher doudoune moncler pas cher doudoune moncler pas cher doudoune moncler pas cher moncler outlet online moncler outlet online moncler outlet online moncler outlet online moncler outlet online