Winter Wheat Production Manual

Written by D. B. Fowler
Crop Development Centre
University of Saskatchewan

© University of Saskatchewan. All rights reserved.  No part of the Winter Wheat Production Manual may be reproduced in any form by any photographic, electronic, mechanical or other means, or used in any information storage and retrieval system without the written permission of the University of Saskatchewan or Ducks Unlimited Canada.

Supporting Images II

Cold Hardiness of Norstar
Seed-placed nitrogen fertilizer can reduce the winter-hardiness of wheat plants. Placement of 60 lb ammonium nitrate nitrogen/acre (67 kg/ha) in the seed row caused severe winter damage in the trial pictured above.
Crown importance
Spring regrowth of winter wheat. The plant on the left initiated some new leaf growth but failed to produce new roots in the spring. It will die as soon as the crown reserves are exhausted. The plant on the right has produced both new leaves and roots. It will survive.
A closer look at the crown of a viable winter wheat plant showing new white roots produced in the spring.
Narrow packer
Fall tilled or conventional summerfallow fields have poor snowtrapping capabilities. Snow either drifts into small dunes or off the field completely. This results in variable snowcover and abrupt changes in crop winter stress levels.
Air seeders
An example of the variation in minimum FSI required to produce an undamaged winter cereal stand in a field with poor snowtrapping capabilities, such as most summerfallow fields. An estimate of the snowcover depth on this area can be obtained utilizing the values given in Table 4.
Air deliver
Patchy survival pattern that often occurs when winter wheat is seeded on summerfallow in Saskatchewan. Areas that are green survived under snow banks (dunes) during the coldest part of the winter.