THERE ARE TWO TYPES OF SUSBSISTENCE FARMING-PRIMITIVE(SHIFTING,NOMADIC HERDING CULTIVATION) AND INTENSIVE SUBSISTENCE FARMING .
PRIMITIVE SUBSISTENCE FARMING INCLUDES SHIFTING CULTIVATION AND NOMADIC HERDING AND INTENSIVE SUBSISTENCE AGRICULTURE
SHIFTING CUTIVATION IS PRACTISIED BY THE TRIBALS LIVING IN THE DENSE TROPICAL FORESTS-CLEAR A PATCH OF LAND BY BURNING ALL THE TREES AND IS ALSO CALLED SLASH AND BURN
TUBER CROPS LIKE TAPIOCA ,CASSAVE AND YAMS ARE GROWN TOGETHER WITH MAIZE ,MILLETS ,BEANS AND BANANAS
NOMADIC HERDING-PRACTISED BY NOMADIC PEOPLE WHO GRAZE THEIR ANIMALS ON NATURAL PASTURES .THEY MOVE FROM ONE PLACE TO ANOTHER IS SEARCH OF WATER AND FODDER SUPPLY
HERDING IS CONFINED TO SPARSELY WHERE THE NATURAL VEGETATION IS MAINLY GRASS .BAKARWALS OF THE HIMALAYAN REGION ARE SOME IMPORTANT ANIMA HERDEERS
INTENSIVE SUBSISTENCE AGRICULTURE IS PRACTICED IN DENSLY POPULATED REGIONS OF THE WORLD .LAND HOLDINGS ARE SMALL AND FARMING IS INTENSIVE AND USES A LOF OF HUMAN LABOUR
SIMPLE TOOLS ARE USED AND FARM MACHINES ARE RARE AND FARMERS MAKE OPTIMUM USAGE OF LAND AND GROW 2-3 CROPS ANNUALLY WITH IRRIGATION ,YEILDING OF SEEDS ,NATURAL MANURES AND CHEMICAL FERTILIZERS