CIM22EAPP3-38

CIM21EAPP3-38 is a high-yielding, white maize hybrid, with resistance to GLS, TLB, rust, ear rots, and root & stalk lodging tolerance, bred for the highlands of eastern Africa. It is notable for excellent male/female synchrony for seed production.    General Information   Target region Eastern Africa    Adaptation/Agroecological zone 1800-2400 masl   Type of product Three-way cross   Year first announced 2024         Kernel Characteristics       Kernel color White Grain Yield   Kernel texture Semi-dent Grain yield (opt.) 8.81 t/ha       Grain yield under on-farm conditions 9.0 t/ha   Biotic Stress Performance Grain yield under low N stress 2.4 t/ha   Grey leaf spot (GLS) (AI) (1-9)* 5.3       Turcicum leaf blight (TLB) (AI) (1-9)* 3.4 Agronomic Characteristics   Rust (nat.) (1-9)* 2.2 Maturity group Late   Ear rots 4.0% 50% anthesis 91.7 days   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. (725 GDD)   Anthesis-silking interval  1.9 days       Ear height  140 cm   Seed Production Characteristics Plant height  251 cm   SC female parent yield 7.4 t/ha Ears per plant 1.0   Male parent yield 2.4 t/ha Bad husk cover 10.8%   Nicking 1.1 days Ear aspect (1-5)* 2.8       Plant aspect (1-5)* 3.2   Comments Root lodging 13.2%   Product information is based on data from  the
CIMMYT Eastern Africa 2022 Regional Trial
(CIM22RTEAPP3) and 2023 regional on‐farm trials (CIM23ROFT-EA-PP3). Actual performance will vary depending on a number of agronomic and environmental factors. 

Abbreviations:
AI = artificial infestation/inoculation
GDD = growing degree-days (°C)
GLS = Grey Leaf Spot
Low N = managed low nitrogen stress
masl = meters above sea level
nat. = natural infestation
opt. = optimum (44,444 plants per ha)
RS = random stress
SC = single-cross
TLB = Turcicum Leaf Blight Stalk lodging 9.2%   *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)