Here are the top 10 agricultural products in Maine, USA, along with their approximate acreage and revenue in 2020:

1. Blueberries - Maine is the largest producer of wild blueberries in the world, with approximately 60,000 acres in production. In 2020, the blueberry industry generated an estimated $218 million in revenue.

2. Potatoes - Maine is the 9th largest producer of potatoes in the US, with approximately 50,000 acres in production. In 2020, the potato industry generated an estimated $155 million in revenue.

3. Apples - Maine is a major producer of apples, with approximately 1,200 acres in production. In 2020, the apple industry generated an estimated $8 million in revenue.

4. Dairy Products - Maine is home to approximately 200 dairy farms, producing milk, cheese, and other dairy products. In 2020, the industry generated an estimated $56 million in revenue.

5. Maple Syrup - Maine is the 3rd largest producer of maple syrup in the US, with approximately 580,000 taps in operation. In 2020, the maple syrup industry generated an estimated $27 million in revenue.

6. Hay - Maine farmers produced approximately 1.2 million tons of hay in 2020, with a total production value of around $24 million.

7. Christmas Trees - Maine is a major producer of Christmas trees, with approximately 15,000 acres in production. In 2020, the industry generated an estimated $23 million in revenue.

8. Aquaculture - Maine is a major producer of aquaculture products, including Atlantic salmon, mussels, and oysters. In 2020, the industry generated an estimated $22 million in revenue.

9. Beef Cattle - Maine has approximately 8,000 beef cattle operations, producing both grass-fed and grain-fed beef. In 2020, the industry generated an estimated $19 million in revenue.

10. Poultry - Maine farmers produce a variety of poultry products, including eggs and meat. In 2020, the industry generated an estimated $16 million in revenue.