'lacking behind'?

Hi,

Do you find the bold part in the following sentence unnatural?

“The processing industry is lacking behind, which is causing growing imports of meat and dairy products, cereals, and related products”

Many thanks.

You mean “lagging behind”?

Yes, I do. As Tofu has indicated, you need “lagging” or “lagging behind.” “Lack” is a transitive verb meaning “to be deficient of something.” “Lag” means to be delayed or inhibited in success or development. Your sentence needs a period.