Yield Potential
for Late
Emerging Wheat

Production Technology - Crops

February 2001

Vol. 13, No. 10

Table of Contents

Yield in Normal Situations with October Planting

Yield Potential for Late Emerging Wheat

Plants required per foot of row to have the number of plants per square foot indicated

Assumptions in calculating wheat yield for late emerging wheat

Other concerns about late emerging wheat

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Plants required per foot of row to have the number of plants per square foot indicated.
	Row spacing (")
Plants/sq ft	6	7	7.5	8	9	10

	--------------------------- Plants per foot of row -------------------------------------
9	5	5	6	6	7	8
12	6	7	8	8	9	10
15	8	9	9	10	11	13
18	9	11	11	12	14	15
23	12	13	14	15	17	19
28	14	16	18	19	21	23
32	16	19	20	21	24	27
36	18	21	23	24	27	30

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Assumptions in calculating wheat yield
  for late emerging wheat.

1. No harvest loss included in estimates, normal harvest loss between 1 and 5 bu/a.
2. Test weight is 60 lb/bu.

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Other concerns about late emerging wheat

1. Late emerging wheat will mature 5-10 days later than October planted wheat
2. Later maturity increases the probability of heat, drought, and/or disease decreasing yield.
3. Later maturity may also increase difficulty in lining up custom harvesting.
4. Later maturity and thinner canopy icreases the likelihood of weed problems at harvest.
5. Inadequate nitrogen will reduce # heads per plant and # seed per head.
6. Conditions which lead to very late emerging wheat also increase the likelihood of an excellent
    response to Fert. N.
7. If cheat is present in the late emerging wheat, apply Maverick after wheat has 2 leaves.
8. Applying Maverick in nitrogen solution fertilizer on late emerging wheat may reduce yield.

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