There use to be this list that listed the most pesticide heavy fresh produce, a kind of top ten worst offenders for fresh produce for pesticides, All the places on the web that use to contain this information seem to have taken it down, especiallly eh little printable card that had the top 10 on it which you could use when shopping ? It informed you of which produce was worth buying organic and which not. Strawberries for instance were quite heavy on the pesticide front. Found one site that contained the information but not in its orginal form :
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You can sidestep harm and still eat vitamin-rich foods. If you cannot find these foods organically, here are some great alternatives that contain the same valuable vitamins and minerals.
High-pesticide food: Strawberries
Main nutrient: Vitamin C
Healthy alternatives: Blueberries, raspberries, oranges, grapefruit, kiwifruit, watermelon
High-pesticide food: Bell peppers
Main nutrient: Vitamin C
Healthy alternatives: Green peas, broccoli, romaine, lettuce
High-pesticide food: Spinach
Main nutrient: Vitamins A and C
Healthy alternatives: Broccoli, Brussels sprouts, asparagus
High-pesticide food: Cherries
Main nutrient: Vitamin C
Healthy alternatives: Oranges, blueberries, raspberries, kiwifruit, blackberries, grapefruit
High-pesticide food: Peaches
Main nutrient: Vitamins A and C
Healthy alternatives: Nectarines, watermelon, tangerines, oranges, grapefruit
High-pesticide food: Mexican cantaloupe
Main nutrient: Vitamins A and C
and potassium
Healthy alternatives: U.S. cantaloupe grown from May to December, watermelon
High-pesticide food: Celery
Main nutrient: Carotenoids
Healthy alternatives: Carrots, broccoli, radishes, romaine lettuce
High-pesticide food: Apples
Main nutrient: Vitamin C
Healthy alternatives: Watermelon, nectarines, bananas, tangerines
High-pesticide food: Apricots
Main nutrient: Vitamins A an C and potassium
Healthy alternatives: Nectarines, watermelon, oranges, tangerines
High-pesticide food: Green beans
Main nutrient: Potassium
Healthy alternatives: Green peas, broccoli, cauliflower, Brussels sprouts, potatoes, asparagus