Incorporation of Controlled-Release Fertilizer in a Seepage Irrigated Tomato Fertility Program in Florida

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Material Information

Title:
Incorporation of Controlled-Release Fertilizer in a Seepage Irrigated Tomato Fertility Program in Florida
Physical Description:
1 online resource (180 p.)
Language:
english
Creator:
Carson, Luther C
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Doctorate ( Ph.D.)
Degree Grantor:
University of Florida
Degree Disciplines:
Horticultural Sciences
Committee Chair:
OZORES-HAMPTON,MONICA
Committee Co-Chair:
OBREZA,THOMAS ANTHONY
Committee Members:
SARGENT,STEVEN ALONZO
MORGAN,KELLY T
SARTAIN,JERRY B

Subjects

Subjects / Keywords:
bmp -- crf -- eef -- solanum -- srf
Horticultural Sciences -- Dissertations, Academic -- UF
Genre:
Horticultural Sciences thesis, Ph.D.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
Controlled-release fertilizers (CRF) are soluble fertilizers (SFs) coated with a polymer, resin, or a hybrid of polymer coating sulfur coated urea and a vegetable production best management practice in Florida { TC ABSTRACT }. The goal with CRF will be that nitrogen (N) release matches tomato (Solanum lycopersicum) N uptake, which may increase N use efficiency resulting in higher marketable yields and fruit quality with reduced N rates and environmental impacts. Therefore, the purposes of this dissertation were to: evaluate N release from CRFs buried in pouches in seepage-irrigated tomato beds, and correlate the N release with accelerated temperature controlled incubation method (ATCIM) extraction values. Also, a hybrid fertilizer system combining individual 120 and 180 d release (DR) CRFs or CRF mixes of 100, 140, and 180 DR with SFs was evaluated on fall season marketable fruit yield, postharvest quality, leaf tissue N content (LTNC), and post season soil N content. The high bed temperatures compared to the temperatures at which manufacturers measure CRF N release (20.0 to 25.0 C), shortened N release duration by 23% to 88% and 23% to 79% in 2011 and 2013, respectively. Correlations of the ATCIM and pouch method predicted N curves of individual CRFs with a R2 of 0.90 and grouped CRF with a R2 of -0.64 to 0.99. The CRF mixes at 112/56 (CRF/SF) and 168/56 kg/ha N in the hybrid fertilizer system and individual CRF containing N, phosphorus, and potassium at 190 to 224 kg/ha N pre-plant incorporated in the bottom mix can be recommended for fall tomato production. No negative impacts of CRFs were found on postharvest fruit quality or LTNC during the seasons. Therefore, CRFs can supply 65% to 80% of a fall tomato fertility program and maintain marketable yields and fruit quality at reduced N rates and low residual soil N.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Luther C Carson.
Thesis:
Thesis (Ph.D.)--University of Florida, 2014.
Local:
Adviser: OZORES-HAMPTON,MONICA.
Local:
Co-adviser: OBREZA,THOMAS ANTHONY.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2015-05-31

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2014
System ID:
UFE0046445:00001