| CIM23EAPP1-02-12 is an early-maturing, high-yielding, maize hybrid with white grain, drought tolerance, nitrogen-use efficiency, and resistance to GLS, TLB, ear rots, and MSV. Farmers noted it favorably for having large cobs. |
|
General Information |
| |
Target region |
Eastern Africa |
| |
Adaptation/Agroecological zone |
1300-1900 masl |
| |
Type of product |
Three-way cross |
| |
Year first announced |
2025 |
| |
|
|
|
|
| Grain Yield |
|
Why farmers say they like it* |
| Grain yield (OPT) |
6.75 t/ha |
|
Good yield, early maturity, grain quality, large cob, disease and lodging resistance |
| Grain yield (On-farm) |
3.00 t/ha |
|
| Grain yield under low N stress |
3.16 t/ha |
|
*Common keywords from farmer feedback (EA-ROFT 2024-1B) |
| Grain yield under managed drought |
0.92 t/ha |
|
|
|
| Grain yield under MLN stress (AI) |
6.15 t/ha |
|
Kernel Characteristics |
| |
|
|
Kernel color |
White |
| Agronomic Characteristics |
|
Kernel texture |
Semi-flint |
| Maturity group |
Early |
|
|
|
| 50% anthesis |
73.4 days |
|
Biotic Stress Performance |
| (864 GDD) |
|
MLN (AI) (1-9)* |
3.00 |
| Anthesis-silking interval |
1.06 days |
|
Grey leaf spot (GLS) (AI & nat.) (1-9)* |
3.05 |
| Ear height |
118cm |
|
Turcicum leaf blight (TLB) (AI & nat.) (1-9)* |
2.64 |
| Plant height |
219cm |
|
Common rust (nat.) (1-9)* |
1.99 |
| Ears per plant |
1.03 |
|
Ear rots (nat.) (1-9)* |
8.25% |
| Bad husk cover |
7.89% |
|
*Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
| Ear aspect (1-5)* |
2.40 |
|
| Plant aspect (1-5)* |
2.44 |
|
|
|
| Root lodging |
3.94% |
|
Seed Production Characteristics |
| Stalk lodging |
6.50% |
|
SC female parent yield |
8.06 t/ha |
| *Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics |
|
Male parent yield |
1.88 t/ha |
| |
Nicking |
4.6 days |
| |
|
|
|
|
| Further Links |
|
Comments |
Full Product Announcement
(including trial results summary and site information) |
|
Product information is based on data from East Africa 2023 Stage 4 (CIM23EAPP1B-RT) and 2024 Stage 5 (EA-ROFT 2024-1B) Trials. Actual performance will vary depending on a number of agronomic and environmental factors.
Abbreviations:
AI = artificial 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 disease pressure
NUE = Nitrogen-use efficient
Opt = Optimal management
ROFT = Regional On-Farm Trials
RS = random stress
SC = single-cross
TLB = Turcicum Leaf Blight |
| |
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
