commercial farming, or 'factory farming' generally uses many more growth hormones and is far less humane than family farms. see factoryfarming.com for more information.
The subsistence farming is practiced to fulfill the basic food requirements of farmer's family where as commercial farming include to earn more after selling the final products of cultivated crops.We...
Subsistence farming is where the farmer only grows enough crop to feed his/her family.
Commercial farming is where they farm so they can sell their crop for a profit.