How to increase shelf life of vegetables and fruits in kitchen?

I am a big fan of eating healthy and the best way is to buy fresh produce from the weekly farmer's market. And if you also spent lots of money on fresh fruits and veggies only to have them go bad a few days later. You're not alone, I always face this problem. 
Keeping fruits and veggies fresh can be tricky, especially when the weather starts warming up. I searched on the internet and I found few very good tips and these all actually works as they are tested and tried by your's truly.

If you want to save money and keep your food fresh longer, check out a few of these tips for storing your favorite produce.

Potatoes

Store your favorite starch with an apple. The natural ethylene gas in apples helps keep the potatoes from sprouting. AOL reports that one test showed potatoes lasted up to eight weeks (firm and sprout-free!). 

Tomato

If you want to keep your tomatoes fresh and tasty, keep them out of the refrigerator, yes, you read it correct!. DO NOT store Tomatoes in Fridge. Store tomatoes on the counter so they ripen properly. 

Mushrooms

Store your mushrooms in a brown paper bag. The bag helps keep your mushrooms dry and clean so they don't get slimy. If they start to dry out, rinse them under water. 

Onions

Store onions in a cool, dry place. Lay them flat so they get good air circulation, so that the outer skins dry and don't get moldy. 

Apples

Store apples in the refrigerator to make them last longer. They last up to three weeks in the fridge. Keep these away from other fruits and veggies because they release a ton of natural gas, which causes your other produce (except for potatoes) to ripen faster. 

Lemons

Instead of cutting your lemons in half for a bit of juice, poke them with a skewer and use the juice you need. Then just store the lemon in the refrigerator. Cutting your lemon in half will make it dry out faster. Sprinkle salt on a half cut lemon will help lemon to stay fresh longer and store it in the refrigerator.

Carrots and Radishes

Chop them and store them in a bowl of water in the refrigerator to keep them fresh and crispy.

Bananas

Wrap 'em up. Cover the stems in plastic wrap to keep the natural gasses emitted by bananas from browning the bananas too quickly. You can wrap the bunch together or break them apart and wrap them individually

Green Chillies

detach the stem and store it in the refrigerator in an airtight jar.