May 1994 SCSB# 380


C. C. Mitchell (Editor)

For a complete list of regional project committee members and other contributing authors,


In 1989, an informal group of extension and experiment station scientists from Alabama, Florida, and Georgia met in Headland, Alabama. The meeting was led by Director Gale Buchanan of the Georgia Coastal Plain Experiment Station. The purpose of this meeting was to compare soil test methodology, calibration, and fertilizer recommendations for peanuts on Coastal Plain soils common to all three states where runner-type peanuts are grown and to review pertinent research projects on peanut fertility. There was some concern that soil analyses, calibration, interpretation, and recommendations changed at state lines for peanuts on very similar soils and that current research results had not been utilized in soil testing programs for peanuts on Coastal Plain soils. As a result of this group’s efforts, a subcommittee of SERA-IEG-6 (formerly SRIEG-18), “Soil Testing and Peanut Fertility,” was established. Gary Gascho (GA) was appointed chairman of this subcommittee.

The subcommittee met again in 1990, 1991, and 1992 with additional peanut researchers and extension specialists from Florida, Georgia, Alabama, and North Carolina. This regional publication is a review of the pertinent research discussed at the meetings and a consensus opinion regarding sampling procedures, soil test calibration for P, K, Ca, Mg, and micronutrients, and suggested fertilizer, lime, and gypsum applications. The interpretation guidelines and recommendations presented in this report are intended to guide soil testing programs for peanuts on Coastal Plain soils. Differences will continue to exist from state to state and region to region because of farming traditions, regional economic differences, political influences on recommendations, and recognized differences in soils, climates, and peanut varieties. The Peanut Fertility Committee of SERA-IEG-6 presents this publication as a guide and justification for research-based changes in local soil test interpretations and recommendations for peanuts.

Note on Units
Because most state soil testing programs are oriented toward user services, interpretation guidelines and recommendations are often reported in English units of pounds per acre. Calibration research is often reported in mg kg-1 mg dm-3, or mg L-1 of extractable nutrient and kg ha-1 of applied nutrients. This report is intended for use by soil testing laboratories making interpretations and recommendations for peanut producers. Therefore, soil test extractable nutrients are converted (where appropriate) and reported in mg kg-1 or mg L-1 depending upon source of the data. Fertilizer recommendations are expressed in terms of pounds per acre of P205, K20, Mg, Ca, etc.

C.C. Mitchell, Editor
May 1994

Table of Contents

This bulletin from the Southern Extension and Research Activity Information Exchange Group-6 (SERA-IEG-6) included researchers from Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, Oklahoma, Puerto Rico, South Carolina, Tennessee, Texas, and Virginia. It is being electronically published with the approval of the Directors of the Southern Agricultural Experiment Stations. Under the procedure of cooperative publications, it becomes in effect, a separate publication for each of the cooperating stations listed.

Information contained herein is available to all persons regardless of race, color, sex, or national origin.

Document Prepared by:
Leigh H. Stribling,
Alabama Agricultural Experiment Station
Auburn University

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