| CIM23EAPP2-15 is a late-maturing, high-yielding, white maize hybrid, with resistance to GLS, TLB, rust, ear rots, root & stalk lodging, bred for use in tropical, rainfed, wet upper mid-altitude areas in eastern Africa and similar agroecologies. |
|
General Information |
| |
Target region |
Eastern Africa |
| |
Adaptation/Agroecological zone |
1300-1900 masl |
| |
Type of product |
Three-way cross |
| |
Year first announced |
2025 |
| |
|
|
| |
Why farmers say they like it* |
| |
|
|
Good yield, grain quality, kernel size, pest and disease resistance |
| Grain Yield |
|
| Grain yield (OPT) |
8.12 t/ha |
|
*Common keywords from farmer feedback (EA-ROFT 2024-P2) |
| Grain yield (On-farm) |
4.88 t/ha |
|
|
|
| Grain yield under low N stress |
2.96 t/ha |
|
Kernel Characteristics |
| Grain yield under managed drought |
2.14 t/ha |
|
Kernel color |
White |
*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 |
|
Kernel texture |
Semi flint |
| |
|
|
| |
Biotic Stress Performance |
| |
|
|
Grey leaf spot (GLS) (AI) (1-9)* |
2.25 |
| Agronomic Characteristics |
|
Turcicum leaf blight (TLB) (AI) (1-9)* |
2.93 |
| Maturity group |
Late |
|
Rust (nat.) (1-9)* |
2.34 |
| 50% anthesis |
83.9 days |
|
Ear rots |
5.80% |
| (917 GDD) |
|
*Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. |
| Anthesis-silking interval |
0.47 days |
|
| Ear height |
119cm |
|
|
|
| Plant height |
239cm |
|
Seed Production Characteristics |
| Ears per plant |
1.01 |
|
SC female parent yield |
5.74 t/ha |
| Bad husk cover |
5.6% |
|
Male parent yield |
1.97 t/ha |
| Ear aspect (1-5)** |
2.03 |
|
Nicking |
2.63 days |
| Plant aspect (1-5)** |
2.83 |
|
|
|
| Root lodging |
6.6% |
|
Comments |
| Stalk lodging |
7.1% |
|
Product information is based on data from East Africa 2023 Stage 4 (CIM23EAPP2-RT) and 2024 Stage 5 (EA-ROFT 2024-P2) 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 and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics |
|
| |
| |
|
|
| Further Links |
|
Full Product Announcement
(including trial results summary and site information) |
|
| |
| |
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
