CIM23EAPP1-02-15

CIM23EAPP1-02-15 is an early maturing, white, high yielding, drought tolerant, NUE, and resistant to MLN, MSV, GLS, TLB, ear rots, and root & stalk lodging tolerance.   General Information   Target region Eastern Africa   Adaptation/Agroecological zone 1300-1900 masl   Type of product Three-way cross       Year first announced 2025 Grain Yield       Grain yield (OPT) 6.69 t/ha   Why farmers say they like it* Grain yield (On-farm) 3.19 t/ha   Good yield, grain quality, drought resistance Grain yield under low N stress 2.94 t/ha   Grain yield under managed drought 1.15 t/ha   *Common keywords from farmer feedback (EA-ROFT 2024-1B) Grain yield under MLN stress (AI) 4.60 t/ha             Kernel Characteristics Agronomic Characteristics   Kernel color White Maturity group Early   Kernel texture Flint 50% anthesis 70.83 days       (852 GDD)   Biotic Stress Performance Anthesis-silking interval  1.08 days   MLN (AI) (1-9)* 4.00 Ear height  119cm   Grey leaf spot (GLS) (AI & nat.) (1-9)* 2.98 Plant height  239cm   Turcicum leaf blight (TLB) (AI & nat.) (1-9)* 2.83 Ears per plant 1.01   Common rust (nat.) (1-9)* 2.23 Bad husk cover 5.55%   Ear rots (nat.) (1-9)* 6.64% Ear aspect (1-5)** 2.33   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. Plant aspect (1-5)** 2.59   Root lodging 4.71%       Stalk lodging 7.35%   Seed Production Characteristics *Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics   SC female parent yield 6.52 t/ha   Male parent yield 2.87 t/ha       Nicking 2.4 days Further Links       Full Product Announcement
(including trial results summary and site information)   Comments   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 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