CZH23303A

CZH23303A  is an early maturing, high-yielding, drought tolerant, nutritious maize hybrid with orange grain that is biofortified with PVA and is NUE, resistant to GLS, TLB, Ear rots, and MSV, and bred for food use in tropical, rainfed, dry/wet mid-altitude and transition ecologies in southern Africa and similar agroecologies.   General Information   Target region Southern Africa   Adaptation/Agroecological zone < 1800 masl   Type of product Three-way cross hybrid   Year first announced 2025         Grain Characteristics Grain Yield   Grain color Orange Grain yield under optimum conditions 7.26 t/ha   Grain texture Semi-flint Grain yield under managed drought stress 3.08 t/ha   Provitamin A content 9.1 µg/g Grain yield under low N stress 2.11 t/ha       Grain Yield on-farm (moderate stress) 5.08 t/ha   Biotic Stress Performance Grain Yield on-farm (severe stress) 1.73 t/ha   Turcicum leaf blight (TLB) (1-9)* 5.0       Grey leaf spot (GLS) (1-9)* 4.3 Agronomic Characteristics     Maize Streak Virus (MSV) (1-9)* 3.0 Days to maturity 69 DAP   Ear rots 8.6% Days to 50% anthesis 69 DAP   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible.   903   Anthesis-silking interval 1.5 days       Plant height 188.6 cm   Seed Production Characteristics Ear height 104.1 cm   SC female parent yield  6.62 t/ha Ears per plant 0.91   Male parent yield 3.40 t/ha Bad husk cover 11.7%   Nicking -1.2 Ear aspect (1-5)* 2.0       Root lodging 9.1%   Comments Stalk lodging 2.5%   Product information is based on data from CIMMYT Southern Africa 2024 Stage 4 and 2024 Stage 5 Trials.  Actual performance will vary depending on a number of agronomic and environmental factors.

Abbreviations:
GLS = Grey Leaf Spot
Low N = managed low nitrogen stress
masl = meters above sea level
MSV = Maize Streak Virus
NUE = nitrogen-use efficient
opt. = optimum (44,444 plants per ha)
PVA = Provitamin A
SC = single-cross
TLB = Turcicum Leaf Blight (E. turcicum) *Ear aspect is scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics           Further Links