Question

which crop is generally grown between two cereal crops in crop rotation to restore the fertility of soil

Answer 1

leguminous crops like pea,pulses etc are grown between two cereal crops in crop rotation to restore the fertility of soil because the root nodules of legumes have rhizobium bacteria which convert atmospheric nitrogen soluble in water so that plants can use it

Answer 2

Hey...
leguminous plants are generally sown b/w two cereals ... because the leguminous plants gives more nitrogen through their roots and nitrogen is very useful for plants...and it also helps in restoration of fertility of soil .
Hope this helps u..