| CIM20EAPP3-01-47 is a late-maturing, high-yielding, white maize hybrid, with resistance to GLS, TLB, rust, and ear rots, bred for target agroecologies of the highlands of eastern Africa. |
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General Information |
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Region |
Eastern Africa |
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Adaptation/Agroecological zone |
1800-2400 masl |
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Type of product |
Three-way cross |
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Year first announced |
2022 |
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| Grain Yield |
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Kernel Characteristics |
| Grain yield (opt.) |
9.22 t/ha |
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Kernel color |
White |
| Grain yield under on-farm conditions |
9.3 t/ha |
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Kernel texture |
Semi-dent |
| Grain yield under low N stress |
2.81 t/ha |
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| Grain yield (RS) |
5.75 t/ha |
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Biotic Stress Performance |
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Grey leaf spot (GLS) (AI) (1-9) |
3.6 |
| Agronomic Characteristics |
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Turcicum leaf blight (TLB) (AI) (1-9) |
3.7 |
| 50% anthesis |
772.9 GDD |
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Rust (nat.) (1-9) |
3.5 |
| Anthesis-silking interval |
2 days |
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Ear rots |
3.5% |
| Ear height |
113.1 cm |
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Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
| Plant height |
222.2 cm |
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| Ears per plant |
1.4 |
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| Bad husk cover |
4.3% |
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Seed Production Characteristics |
| Ear aspect (1-5) |
2.4 |
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SC female parent yield |
11.3 t/ha |
| Plant aspect |
2.8 |
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Male parent yield |
3.7 t/ha |
| Root lodging |
1.5% |
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Nicking |
-5.4 days |
| Stalk lodging |
2.2% |
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| Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics |
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Comments |
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Product information is based on data from the CIMMYT East Africa 2020 Regional Trial (CIM20EAPP3) and 2021 regional on-farm trials (EA-ROFT 2021-1A). Actual performance will vary depending on a number of agronomic and environmental factors.
Abbreviations:
AI = artificial infestation/inoculation
GDD = growing degree-days (°C)
GLS = Grey Leaf Spot
Low N = managed low nitrogen stress
masl = meters above sea level
nat. = natural infestation
opt. = optimum (44,444 plants per ha)
RS = random stress
SC = single-cross
TLB = Turcicum Leaf Blight |
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| Further Links |
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Full Product Announcement
(including trial results summary and site information) |
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