CIM24EAMW-05

CIM24EAMW-05 is a Medium-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. It is notable for performance in low nitrogen environments.   General Information   Target region Eastern Africa   Adaptation/Agroecological zone 1300-1900 masl   Type of product Three-way cross   Year first announced 2026         Why farmers say they like it*   Big cobs, high yield, good plant height, double cobs, good for fodder,        Grain Yield   *Common keywords from farmer feedback during CIMMYT's Eastern Africa 2025 regional on-farm trials  Grain yield (Opt) 8.93 t/ha   Grain yield on-farm >3 t/ha* 4.55 t/ha       Grain yield on-farm < 3 t/ha** 2.07 t/ha   Kernel Characteristics Grain yield under low N 3.66 t/ha   Kernel color White Grain yield under MD 1.98 t/ha   Kernel texture Semi-flint Grain yield under GLS (AI) 7.91 t/ha       Grain yield under TLB (AI) 9.19 t/ha   Biotic Stress Performance *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   Grey leaf spot (GLS) (AI) (1-9)* 3.58   Turcicum leaf blight (TLB) (AI) (1-9)* 3.33   Ear rots 6.2%       *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. Agronomic Characteristics   Maturity group Intermediate       50% anthesis 71 days   Seed Production Characteristics Anthesis-silking interval  -0.35 days   SC female parent yield 6.50 t/ha Farmers' score* 1.90   Male parent yield 1.50 t/ha Ear height  128.94   Nicking -3 days Plant height  254.70       Ears per plant 1.00   Comments Bad husk cover 5.8%   Product information is based on data from CIMMYT East Africa 2024 Regional Trial and 2025 regional on‐farm trials 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 Ear aspect (1-5)** 2.47   Plant aspect (1-5)** 2.56   Root lodging 4.2%   Stalk lodging 2.9%   *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               Further Links   Full Product Announcement
(including trial results summary and site information)