CIM23EAPP1-01-07

CIM23EAPP1-01-07  is an intermediate-maturing, high-yielding maize hybrid with white grain, drought tolerance, nitrogen-use efficiency, and resistance to GLS, TLB, ear rots, and MSV. It is particularly notable for being MLN-tolerant and having demonstrated a 12% yield advantage over the best commercial check in on-farm trials.   General Information   Target region Eastern Africa   Adaptation/Agroecological zone 600-1500 masl   Type of product Three-way cross   Year first announced 2025             Why farmers say they like it* Grain Yield   Good yield, early maturity, drought and disease resistance Grain yield (OPT) 7.34 t/ha   Grain yield (On-farm) 4.26 t/ha   *Common keywords from farmer feedback in the 2024 Stage 5 (EA-ROFT 2024-1A) Trials. Grain yield under low N stress 2.59 t/ha   Grain yield under managed drought 2.04 t/ha       Grain yield under MLN stress (AI) 6.11 t/ha   Kernel Characteristics       Kernel color White Agronomic Characteristics   Kernel texture Semi dent Maturity group Intermediate       50% anthesis 77.4 days   Biotic Stress Performance (904 GDD)   MLN (AI) (1-9)* 3.09 Anthesis-silking interval  0.82 days   Grey leaf spot (GLS) (AI & nat.) (1-9)* 2.10 Ear height  125cm   Turcicum leaf blight (TLB) (AI & nat.) (1-9)* 2.52 Plant height  243cm   Common rust (nat.) (1-9)* 2.12 Ears per plant 1.00   Ear rots (nat.) (1-9)* 7.17% Bad husk cover 11.3%   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. Ear aspect (1-5)* 2.75   Plant aspect (1-5)* 2.50       Root lodging 5.72%   Seed Production Characteristics Stalk lodging 4.32%   SC female parent yield 7.11 t/ha *Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics   Male parent yield 1.62 t/ha   Nicking 2.2 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 (CIM23EAPP1A-RT) and 2024 Stage 5 (EA-ROFT 2024-1A) 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
RS = random stress
SC = single-cross
TLB = Turcicum Leaf Blight