In lowland areas, farmers typically cultivate rice in flooded fields known as paddies. These paddies are flooded with water to control weeds and pests, and to provide the necessary environment for rice growth. Farmers may also use irrigation systems to supply water to the rice fields if natural water sources are insufficient.
For selections you can your the Marquee Tool, Lasso Tool, or Magic Wand Tool. To cut that selection you can use the Move Tool, or the Ctr-X keyboard shortcut.
A mini saw-zahl will be the best tool to cut speak holes in your car.
The tool you use for cutting wood is a a saw
the farmers are wanting to cut down forests just for their use.
Your dads baldhead
Most crops are grown for profits for farmers, not for personal use. Only in the third world countries like most of Africa and India will you find farmers that grow and harvest rice and wheat for their own use.
They would use a Restriction Enzyme
Usually a cake knife.
Use the croping tool.
A scalpel
A Jigsaw would be a good power tool to cut along a curved line.