Most farmers use substandard hybrid maize seeds traditional or open pollinated varieties after the introduction of hybrid varieties,

LAHORE: 
As farmers have shifted to high-yielding hybrid maize seeds from traditional or open pollinated varieties after the introduction of hybrid varieties, most of them use substandard hybrid seeds and old farming practices and fail to get desired production.
The farmers must use...Most farmers use substandard hybrid maize seeds traditional or open pollinated varieties after the introduction of hybrid varieties,