CIM23SAPP1A-17

CIM23SAPP1A-17 is a high-yielding, intermediate 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 good seed parent 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*       Good crop stand, Cob size, Disease tolerance Grain Yield   Grain yield under optimum conditions 10.71 t/ha   *Common keywords from farmer feedback (CIMMYT Southern Africa 2024 Stage 5 Trials) Grain yield under managed drought 2.14 t/ha   Grain yield under low nitrogen 2.43 t/ha       Grain Yield on-farm (severe stress*) 1.52  t/ha   Grain Characteristics * 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 color White   Grain texture Semi-dent         Biotic Stress Performance       Turcicum leaf blight (TLB) (1-9)* 2.7 Agronomic Characteristics     Grey leaf spot (GLS) (1-9)* 2.8 Maturity group Intermediate   Maize Streak Virus (MSV) (1-9)* 2.2 50% anthesis 70 DAP   Ear rots 6.3% 911 GDD   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. Anthesis-silking interval 1.37 days   Plant height 242 cm       Ear height 121 cm   Seed Production Characteristics Ears per plant 1.07   Single-cross female parent yield 10.51 t/ha Ear position (ratio) 0.49   Male parent yield 2.21 t/ha Bad husk cover 4.8   Nicking -2.43 days Ear aspect (1-5)* 2.3       Root lodging 2.9%   Comments Stalk lodging 3.5%   Product information is based on data from CIMMYT Southern Africa 2023 Stage 4 and 2024 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
masl = meters above sea level
MSV= Maize Streak Virus
NUE = Nitrogen Use Efficient
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)