| CIM22EAPP1-01-08 is an intermediate-maturing, high-yielding, white maize hybrid with drought tolerance, nitrogen-use efficiency, and resistance to GLS, TLB, ear rots, MLN, and rust. It is notable for exceptional yield potential under optimum management and MLN disease pressure, and excellent seed producibility characteristics. |
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General Information |
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Target region |
Eastern Africa |
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Adaptation/Agroecological zone |
1200-1800 masl |
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Type of product |
Three-way cross |
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Year first announced |
2024 |
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Why farmers say they like it* |
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High yield, good ears, strong stems |
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*Common keywords from farmer feedback (EA-ROFT 2023-1A) |
| Grain Yield |
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| Grain yield (Optimum) |
8.44 t/ha |
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Kernel Characteristics |
| Grain yield (RS) |
4.78 t/ha |
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Kernel color |
White |
| Grain yield on-farm >3 t/ha* |
6.01 t/ha |
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Kernel texture |
Semi-dent |
| Grain yield on-farm < 3 t/ha** |
2.15 t/ha |
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| Grain yield under low N |
2.64 t/ha |
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Biotic Stress Performance |
| Grain yield under MD |
3.77 t/ha |
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MLN (AI) (1-9)* |
4.50 |
| Grain yield under FAW (AI) |
3.32 t/ha |
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Grey leaf spot (GLS) (AI) (1-9)* |
4.58 |
| Grain yield under GLS (AI) |
5.63 t/ha |
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Common rust (nat) (1-9)* |
2.62 |
| Grain yield under TLB (AI) |
6.33 t/ha |
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Turcicum leaf blight (TLB) (AI) (1-9)* |
4.48 |
| Grain yield under MLN (AI) |
8.18 t/ha |
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Maize Streak Virus (MSV) |
Resistant allele present |
*Average of ROFT sites where grain yield was greater than 3 t/ha
**Average of ROFT sites where grain yield was less than or equal to 3 t/ha |
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Ear rots |
5.3% |
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*Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
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| Agronomic Characteristics |
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Seed Production Characteristics |
| Maturity group |
Intermediate |
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SC female parent yield |
9.00 t/ha |
| 50% anthesis |
80.6 days |
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Male parent yield |
3.20 t/ha |
| (812 GDD) |
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Nicking |
-0.7 days |
| Anthesis-silking interval |
-0.29 days |
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| Farmers' Score |
2.33 |
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Comments |
| Ear height |
137 cm |
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Product information is based on data from CIMMTY's Eastern Africa 2022 Stage 4 (CIM22EAPP1A-RT) and 2023 Stage 5 (EA-ROFT 2023-1A) Trials. Actual performance will vary depending on a number of agronomic and environmental factors.
Abbreviations:
AI = artificial infestation/inoculation
FAW = fall armyworm
GDD = growing degree-days (°C)
GLS = Grey Leaf Spot
Low N = managed low nitrogen
masl = meters above sea level
MLN = maize lethal necrosis
MSV = maize streak virus
nat. = natural infestation
NUE = Nitrogen-use efficient
Opt = Optimal management
ROFT = Regional On-Farm Trials
RS = random stress
SC = single-cross
TLB = Turcicum Leaf Blight |
| Plant height |
240 cm |
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| Ears per plant |
1.16 |
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| Bad husk cover |
6.1% |
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| Ear aspect (1-5)* |
2.80 |
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| Plant aspect (1-5)* |
3.06 |
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| Root lodging |
2.53% |
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| Stalk lodging |
2.3% |
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*Farmers' Score is based on a 1-5 scale where 1 = most preferred and 5 = least preferred
**Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics |
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| Further Links |
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Full Product Announcement
(including trial results summary and site information) |
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