variety improvement depends upon newer crop varieties that can give , this is can be achieved by two methods i.e. Hybridization and genetically modified crops :-
- on improving biotic resistances by which plants can be able to fight with pathogens .
- better response from fertilizers and manures
- better suited agronomic characters fro the various requirements
- increased abiotic resistance by which crop can with stand the adverse condition . ( flood , drought , salinity , heat cold and frost )
- better quality of climate conditions .
- and also to maintain quality and quality of the crops .