Fertilization and nutrient management trials in peanut

Institution:

Board of Regents of the University System of Georgia on behalf of the University of Georgia Cooperative Extension Service and University of Georgia Research Foundation, Inc.

Budget ID:

1304

Project ID:

255

Report BID:

State:

Alabama

Region:

Southeast (GA, FL, AL)

State Group:

AL-65

Project Fiscal Year:

2014

Category:

Production/Agronomics

Report Type:

Report Received Date:

Investigator:

Howe

Project NPB Budget:

$20,000

Peanut producers have numerous questions with regard to proper calcium fertilization. The majority of these research questions seek to better understand when and how to apply calcium. Frequently asked questions include: Are all gypsum sources the same and which is the most economical? When is the most effective time to apply gypsum? Would split applications of gypsum be more effective than a single application? Does gypsum release calcium fast enough during peak pod fill? Can calcium be lost from the pegging zone due to high rainfall events? Do liquid calcium applications to the soil supply adequate calcium? Are calcium applications effective when applied as a foliar spray? Can calcium applied through irrigation pivots supplement gypsum/lime applications? This research seeks to provide research data to quantitatively answer these questions for growers. The specific objectives are to evaluate sources of calcium alone or as supplemental treatments, to assess the effectiveness of gypsum applied at various growth stages. Research is organized into three year field studies for each objective. This is the third year for the calcium source and timing study. Various sources of calcium, including two types of gypsum, soluble calcium applied through a center pivot, and foliar applied calcium will be evaluated alone or as supplemental treatments. Timing will include gypsum applications at approximately 45, 75, and 105 days after planting, as well as split application. Field plots will be established with Georgia-06G and Georgia Greener at irrigated and non-irrigated sites and evaluated for yield, grade, germination, and seed calcium. Leaching of calcium from the pegging zone, use of seed Ca as pre-season indicator of seed quality and late season fertilization needs, and the economics of calcium fertilization will also be considered

Click to Download

You must be logged in to view this item.

This area is reserved for members of the news media. If you qualify, please update your user profile and check the box marked "Check here to register as an accredited member of the news media". Please include any notes in the "Supporting information for media credentials" box. We will notify you of your status via e-mail in one business day.