Group Title: Mimeograph report
Title: Liming and fertilization of potatoes in the Hastings and Bunnell areas
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Permanent Link: http://ufdc.ufl.edu/UF00091546/00001
 Material Information
Title: Liming and fertilization of potatoes in the Hastings and Bunnell areas
Alternate Title: Mimeograph report 54-1 ; University of Florida
Physical Description: 2 leaves : ; 28 cm.
Language: English
Creator: Volk, G. M ( Gaylord Monroe ), 1908-
Gammon, Nathan
Potato Investigations Laboratory
University of Florida -- Dept. of Soils
Publisher: Department of Soils, University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: September 22, 1953
 Subjects
Subject: Potatoes -- Soils -- Florida -- Hastings   ( lcsh )
Potatoes -- Soils -- Florida -- Bunnell   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: G.M. Volk and Nathan Gammon, Jr.
General Note: Caption title.
General Note: "September 22, 1953."
General Note: At head of title: Potato Investigations Laboratory, Hastings, Florida, and Department of Soils, Gainesville, Florida.
 Record Information
Bibliographic ID: UF00091546
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 311579105

Full Text

MIMEOGRAPH REPORT 54-1, SEPTEMBER 22, 1953 OGC 6 ,453
POTATO INVESTIGATIONS LABORATORY
HASTINGS, FLORIDA

AND

DEPARTMENT OF SOILS
GAINESVILLE, FLORIDA
LIMING AND FERTILIZATION OF POTATOES IN THE HASTINGS AND BUNNELL AREAS.

G. M. Volk and Nathan Gammon, Jr.

Soil Acidity (pH) Determination. For old lands, soil pH is the most

reliable indicator of lime requirement if determined in the fall as soon as

the summer cover crop is turned under. If nutritional leaf roll has been

prevalent or if new land is being cleared, determine the pH as soon as the

spring crop is off or when the new land is broken, and lime as soon as pos-

sible. Each type of soil should be sampled separately by taking several

plugs of the surface six inches over the area and mixing them together to

make one sample. Several samples should be taken from each field.

Limin. Maintain soil pH between 5.0 and 5.5. For average soils of

the Hastings and Bunnell areas use approximately 1000 pounds of dolomite or

high calcic limestone, or 600 pounds of hydrated lime if the pH is between

4.S and 5.0. For pH values below 4.5 use double these amounts. Proportion-
ate amounts of lime may be used on the basis of 200 pounds of ground limestone

or 120 pounds of hydrated lime for each 0.1 pH below 5.5.

Dolomite is preferred for general use to maintain proper soil pH for po-

tatoes if the pH is not lower than 4.5. High calcic limestone is preferred

where more rapid correction of acidity is desirable. This includes old lands

with a pH below U5 or where nutritional leaf roll has been prevalent; or for

new lands just brought into production. Hydrated lime gives still faster

correction of acidcty but is more costly and difficult to use. It may be used

in emergencies where liming of new lands or those subject to leaf roll has

been delayed until late fall.
PBS 9/22/53 20C






Fertilization. Present practices in the Hastings and Bunnell areas

call for about 2500 pounds of 5-6-6 or 5-7-5 analysis; 2000 pounds of 6-8-8

or 6-8-7; or proportionately less of higher analysis materials. All should

contain about 2 percent soluble magnesia. For average conditions, one fifth

of the nitrogen should be nitrate nitrogen. For new lands or where leaf roll

has been prevalent, the nitrate nitrogen can be increased up to one third of

the total nitro gen present. In any event, new lands or areas previously

shoring leaf roll should be side-dressed with 120 pounds of nitrate of soda

or its equivalent per acre from 40 to 60 days after planting, depending on

how much heavy leaching rainfall has occurred.

Chlorine should be not more than 3 percent, the lower the better if a

dry season is encountered.

All experimental tests carried on in connection with the leaf roll prob-

lem have shown that side-dressing at about blossom time has increased yields.

The average increase wss 37 bushels add ranged up to 72 bushels. In view of

this, it is suggested that a side-dressing of approximately 20 pounds each

of nitrate nitrogen and potash be applied at about 40 days after planting.

This would require 150 pounds of nitrate of soda-potash or its equivalent of

other material. This application would also take the place of the nitrate

of soda recommended for new lands or those subject to leaf roll.




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