CIM24EALW-01

CIM24EALW-01 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. It is notable for drought tolerance, double-cobbing, and good yield under optimum conditions as well as on farm.   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, good plant height, double cobs, good ear placement, good uniformity, strong stems       Grain Yield   *Common keywords from farmer feedback during CIMMYT's Eastern Africa 2025 regional on-farm trials  Grain yield (Opt) 9.15 t/ha   Grain yield on-farm >3 t/ha* 4.99 t/ha       Grain yield on-farm < 3 t/ha** 1.89 t/ha   Kernel Characteristics Grain yield under low N 3.65 t/ha   Kernel color White Grain yield under MD 2.74 t/ha   Kernel texture Dent Grain yield under Striga (AI) 5.50 t/ha       Grain yield under GLS (AI) 6.13 t/ha   Biotic Stress Performance Grain yield under TLB (AI) 7.44 t/ha   Grey leaf spot (GLS) (AI) (1-9)* 3.05 Grain yield under MLN (AI) 1.52 t/ha   Turcicum leaf blight (TLB) (AI) (1-9)* 4.00 *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   Striga (AI) (1-9)* 3.11   Ear rots 6.6%   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.       Agronomic Characteristics       Maturity group Late   Seed Production Characteristics 50% anthesis 81 days   SC female parent yield 6.50 t/ha Anthesis-silking interval  0.51 days   Male parent yield 1.60 t/ha Farmers' score* 2.60   Nicking -3 days Ear height  135.2 cm       Plant height  260.7 cm   Comments Ears per plant 1.23   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 Bad husk cover 6.7%   Ear aspect (1-5)** 2.55   Plant aspect (1-5)** 2.52   Root lodging 8.2%   Stalk lodging 8.6%   *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)