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United States Department of Agriculture

Agricultural Research Service

Peanuts 101 - the Basics
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1 - Overview
2 - Brief History
3 - General Information
4 - Planting
5 - Growth
6 - Irrigation
7 - Fungi (Molds)
8 - Harvest and Drying (Curing)
9 - Grading and Testing
10 - Marketing
11 - Health and Nutrition
12 - Other Uses of Peanuts
Growth
The plant emerges from the soil within two weeks of planting if it has enough water and the temperature remains warm. Flowers are formed about 30 - 40 days after the plant emerges from the soil. The fertilized flower gradually begins growing down toward the earth. As the fertilized ovary grows, the flower petals are dropped. This structure is commonly called a peg. The peg continues to grow downward until it penetrates the soil surface, and the pod develops at a depth of about 2 inches. The plant continually produces new flowers and pods throughout the growing period until harvest. Peanut flower which will become the peg, then the pod. 
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Last Modified: 1/22/2009
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