CIM23SAPP1B-02

CIM23SAPP1B-02 is a high-yielding, late-maturing maize hybrid with white grain, that is drought tolerant, NUE, and resistant to GLS, TLB, ear rots, and MSV. It is suitable for cultivation for food use in tropical, rainfed, dry/wet mid-altitude and transition ecologies in southern Africa and similar agroecologies. It is especially notable for yielding multiple ears per plant and having good male parent seed yield.    General Information   Target region Southern Africa   Adaptation/Agroecological zone 400-1800 masl   Type of product Three-way cross hybrid   Year first announced 2024         Why farmers say they like it*    High Yield, Big Cobs, Disease resistance       Grain Yield   *Common keywords from farmer feedback (CIMMYT Southern Africa 2024 Stage 5 Trials) Grain yield under optimum conditions 10.82 t/ha   Grain yield under managed drought 2.26 t/ha       Grain yield under low nitrogen 2.69t/ha   Grain Characteristics Grain Yield on-farm (severe stress*) 1.66 t/ha    Grain color White * The 2023/24 season in Southern Africa was characterized by the worst drought of the century, declared a national disaster in several countries. Many of the farmers participating in the trial reported write-offs.    Grain texture Semi-dent         Biotic Stress Performance       Turcicum leaf blight (TLB) (1-9)* 2.8 Agronomic Characteristics     Grey leaf spot (GLS) (1-9)* 2.2 Maturity group Late   Maize Streak Virus (MSV) (1-9)* 3.3 50% anthesis 72 DAP   Ear rots 6.9% 952 GDD   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. Anthesis-silking interval 0.52 Days   Plant height 255 cm       Ear height 133 cm   Seed Production Characteristics Ears per plant 1.33   Single-cross female parent yield 9.29 t/ha Ear position (ratio) 0.52   Male parent yield 3.81 t/ha Bad husk cover 5.6%   Nicking -3.0 Ear aspect (1-5)* 2.7       Root lodging 0.3%   Comments Stalk lodging 2.2%   Product information is based on data from CIMMYT Southern Africa 2022/23 Stage 4 and 2023/24 Stage 5 Trials. Actual performance will vary depending on a number of agronomic and environmental factors.

Abbreviations:
DAP = days after planting
GDD = Growing Degree Days °C
GLS = Grey Leaf Spot
MSV= Maize Streak Virus
NUE = Nitrogen Use Efficient
masl = meters above sea level
TLB = Turcicum Leaf Blight *Ear aspect is scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics           Further Links   Full Product Announcement
(including trial results summary and site information)