96775
Description
Mind Map by labradorlass, updated more than 1 year ago
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Created by labradorlass
over 11 years ago
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Seed Rate
- 800 ears/m2
- Approx 3 tillers per plant
- Affects no of ears per plant
- Spring plant population = 266
- established plants = 296
- 10% loss over winter
- rate = 350seeds/m2
- 15% loss prior to establishment
- 15% loss prior to establishment
- less plants/m2 means more shoots/plant
- HGCA 2000
- HGCA 2000
- 10% loss over winter
- HGCA recommended populations
- Sept - 62
- Oct - 90
- Nov - 142
- Actual population is irrelevant
- Plant will grow to componsate
- hence no yield effect
- hence no yield effect
- Plant will grow to componsate
- Minimum - no safety margin
- Every plant lost directly affects yield
- Every plant lost directly affects yield
- Sept - 62
- established plants = 296
- Affects no of ears per plant
- Approx 3 tillers per plant
- As SR increases...
- ...Yield increases
- ...TGW increases, then decreases
- Hence quality
effect if too high
- Hence quality
effect if too high
- ...HFN decreases and then increases
- ...grain protein decreases
- ...percentage of disease increases
- as more seeds
- as more seeds
- No specific weight relationship
- Gooding et al 2002
- ...Yield increases
- Yield decreases linearly
with date after 21st Sept
- Green & Ivins 1985
- Green & Ivins 1985
- Date of sowing
- later date requires higher
optimum no of plants/m2
- Spink et al 2000
- Spink et al 2000
- later date requires higher
optimum no of plants/m2
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