CAH219

CAH219 is an intermediate-maturing maize hybrid bred for the tropical lowlands of South Asia. This high-yielding, yellow-kernel maize hybrid performs well under drought and heat stress conditions, and has tolerance to TLB and ear rots.   General Information   Target Region South Asia   Adaptation/Agroecological zone Tropical Lowland   Type of product Single-cross hybrid   Year first announced 2024             Kernel Characteristics Grain Yield   Kernel color Yellow Grain yield (opt.) 8.21 t/ha   Kernel texture Semi-Dent Grain yield under on-farm conditions 5.04 ± 2.48 t/ha       Grain yield under Heat Stress (Mod VPD) 5.72 t/ha   Biotic Stress Performance Grain yield under Heat Stress (Low VPD) 8.37 t/ha   Fusarium stalk rot (FSR) (AI) (1-9)* 6.3 Grain yield random stress (RS) 5.21 t/ha   Turcicum leaf blight (TLB) (AI) (1-9)* 4.0       Macrophomina Stalk Rot (MSR) (AI) (1-9)* 6.7 Agronomic Characteristics   Ear rots (1-9)* 4.2 Maturity group Medium   *Diseases are scored on a 1-9 scale, where 1 = Highly resistant; 5 = Tolerant; 9 = Highly susceptible. 50% anthesis 55 days   842 GDD (°C)       Anthesis-silking interval  2.1 days   Seed Production Characteristics Ear height  111 cm   Female parent yield 3.63 t/ha Plant height  224 cm   Male parent yield 3.51 t/ha Ears per plant 0.90   Nicking 1.0 days Ear aspect (1-5)* 2.0       Plant aspect (1-5)* 1.5   Comments *Plant and ear aspects are scored on 1-5 scale, where 1 = desirable and 5 = undesirable characteristics   Product information is based on data from the CIMMYT South Asia 2021/22 Stage 4 and 2022/23 Stage 5 Trials (see "Further Links" section). Actual performance will vary depending on a number of agronomic and environmental factors. 

Abbreviations:
AI = artificial infestation/inoculation
FSR = Fusarium stalk rot
GDD = growing degree-days (°C)
MSR = Macrophomina Stalk Rot
Opt = optimal environment
RS = random stress trial
TLB = Turcicum Leaf Blight
VPD = vapor-pressure deficit         Further Links   Full Product Announcement
(including trial results summary and site information)