scholarly journals Advancements with Controlled-Release Fertilizers for Florida Citrus Production: 1996 -2006

EDIS ◽  
2006 ◽  
Vol 2006 (14) ◽  
Author(s):  
Thomas A. Obreza ◽  
Robert Rouse ◽  
Edward A. Hanlon
Keyword(s):  
Controlled Release ◽  
Fact Sheet ◽  
The Past ◽  
Citrus Production ◽  
Florida Citrus ◽  
Fertilizer Technology ◽  
Soil And Water ◽  
Controlled Release Fertilizers

SL-243, an 11-page fact sheet by T.A. Obreza, R. Rouse, and E.A. Hanlon, advises crop advisers, fertilizer dealers, citrus producers and other parties interested in citrus fertilization practices about the advances in fertilizer technology in the past ten years. Published by the UF Soil and Water Sciences Department, July 2006.

scholarly journals Controlled-Release Fertilizers for Florida Citrus Production

EDIS ◽  
1969 ◽  
Vol 2004 (2) ◽  
Author(s):  
Tom Obreza ◽  
Bob Rouse
Keyword(s):  
Controlled Release ◽  
Best Management Practices ◽  
Management Practices ◽  
Irrigation Management ◽  
Nitrogen Sources ◽  
Water Soluble ◽  
Young Tree ◽  
Citrus Production ◽  
Florida Citrus ◽  
Controlled Release Fertilizers

In the new age of Florida citrus production, Best Management Practices to protect water quality are being considered across the state. Growers have been encouraged to carefully consider nitrogen (N) fertilizer rates, application schedules, and irrigation management in their groves. Nitrogen sources have received little attention because most managers are accustomed to using water-soluble fertilizers like ammonium nitrate, ammonium sulfate, and urea. Synthetic controlled-release fertilizers (CRFs) have existed commercially for more than 35 years, but other than use in young-tree fertilizer blends, Florida citrus growers have avoided them due to high cost and lack of production experience. This document is SL-214, a fact sheet of the Soil and Water Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: January 2004. https://edis.ifas.ufl.edu/ss433

scholarly journals Magnesium (Mg) for Citrus Trees

EDIS ◽  
2013 ◽  
Vol 2013 (6) ◽  
Author(s):  
Mongi Zekri ◽  
Tom Obreza
Keyword(s):  
Magnesium Deficiency ◽  
Mg Deficiency ◽  
Fact Sheet ◽  
Deficiency Symptoms ◽  
Mature Leaves ◽  
Citrus Production ◽  
Water Science ◽  
Soil And Water ◽  
Leaf Symptoms ◽  
Citrus Trees

Magnesium deficiency has been a major problem in citrus production. In Florida, Mg deficiency is commonly referred to as “bronzing.” Trees with inadequate Mg may have no symptoms in the spring growth flush, but leaf symptoms develop as the leaves age and the fruit expand and mature in the summer and fall. Magnesium deficiency symptoms occur on mature leaves following the removal of Mg to satisfy fruit requirements. This 4-page fact sheet was written by Mongi Zekri and Tom Obreza and published by the UF Department of Soil and Water Science, July 2013. http://edis.ifas.ufl.edu/ss582

scholarly journals Phosphorus (P) for Citrus Trees

EDIS ◽  
2013 ◽  
Vol 2013 (6) ◽  
Author(s):  
Mongi Zekri ◽  
Tom Obreza
Keyword(s):  
Phosphorus Deficiency ◽  
Nutrient Element ◽  
Fact Sheet ◽  
Citrus Groves ◽  
Low Phosphorus ◽  
Young Leaves ◽  
N Deficiency ◽  
Florida Citrus ◽  
P Supply ◽  
Soil And Water

Phosphorus deficiency is not common in Florida citrus groves. If it does occur, it is more difficult to diagnose than nitrogen (N) deficiency or other nutrient element deficiencies. Growth is reduced when P supply is too low. Phosphorus is highly mobile in plants, so when it is deficient, it may move from old leaves to young leaves and other actively growing areas where energy is needed to form seeds and fruit. This 4-page fact sheet was written by Mongi Zekri and Tom Obreza and published by the UF Department of Soil and Water Science, July 2013. http://edis.ifas.ufl.edu/ss581

scholarly journals Nitrogen Fertilizer Sources: What Does The Future Hold for Citrus Producers?

EDIS ◽  
2006 ◽  
Vol 2006 (6) ◽  
Author(s):  
Tom Obreza ◽  
Larry Parsons ◽  
Kelly Morgan
Keyword(s):  
Nitrogen Fertilizer ◽  
Maximum Yield ◽  
N Fertilizer ◽  
Publication Date ◽  
Original Publication ◽  
The Past ◽  
Price Increases ◽  
The Future ◽  
Florida Citrus ◽  
Soil And Water

Florida citrus growers are well aware that nitrogen (N) is the single most important nutrient applied as a fertilizer to assure maximum yield and fruit quality. Most growers are probably also aware of the substantial N fertilizer price increases that have occurred during the past year (Table 1). Ammonium nitrate, the workhorse N fertilizer used by citrus growers for decades, has had the greatest leap in cost. Typical questions on the minds of growers these days are: why has this happened, will it continue, and will economics force a change in the type of N fertilizer we use?  This document is SL-238, one of a series of the Department of Soil and Water Sciences, UF/IFAS Extension. Original publication date February 2006.  SL238/SS457: Nitrogen Fertilizer Sources: What does the future hold for citrus producers? (ufl.edu)

scholarly journals Citrus Production on the Sandy Soils of Southwest Florida

EDIS ◽  
2006 ◽  
Vol 2006 (15) ◽  
Author(s):  
R. M. Muchovej ◽  
Edward A. Hanlon ◽  
Thomas Obreza ◽  
Monica Ozores-Hampton ◽  
Fritz M. Roka ◽  
...  
Keyword(s):  
Water Management ◽  
Sandy Soils ◽  
Southwest Florida ◽  
Fact Sheet ◽  
Citrus Production ◽  
Water Science ◽  
Mineral Soils ◽  
Soil And Water

SL-234, a 7-page illustrated fact sheet by R.M. Muchovej, E.A. Hanlon, T. Obreza, M. Ozores-Hampton, F.M. Roka, S. Shukla, H. Yamataki, and K. Morgan, reviews those challenges facing citrus growers dealing with soils, water management, and nutrients. The authors describe evolving strategies to efficiently produce citrus in southwest Florida on variable mineral soils. Published by the UF Department of Soil and Water Science, February 2006. SL-234/SS453: Citrus Production on the Sandy Soils of Southwest Florida (ufl.edu)

scholarly journals Crop Considerations for Citrus Lands

EDIS ◽  
2006 ◽  
Vol 2006 (11) ◽  
Author(s):  
Stephen H. Futch ◽  
Brent A. Sellers
Keyword(s):  
Citrus Canker ◽  
Fact Sheet ◽  
Herbicide Residues ◽  
Citrus Production ◽  
Florida Citrus

HS-1062, a 5-page illustrated fact sheet by Stephen H. Futch and Brent A. Sellers, discusses herbicide residues on citrus land where the trees have been removed due to citrus canker, and issues to address before the acreage can be converted to other agricultural uses. The authors describe bioassay procedures and tests for specific herbicide groups. Includes a table of relevant data for herbicide products frequently used in Florida citrus production. Published by the UF Department of Horticultural Sciences, March, 2006. HS1062/HS316: Crop Considerations for Citrus Lands (ufl.edu)

scholarly journals 2007 Florida Citrus Pest Management Guide: Asian Citrus Psyllid and Citrus Leafminer

EDIS ◽  
2007 ◽  
Vol 2007 (10) ◽  
Author(s):  
Michael E. Rogers ◽  
Philip A. Stansly
Keyword(s):  
Pest Management ◽  
Insect Pests ◽  
Citrus Canker ◽  
Citrus Greening ◽  
Asian Citrus Psyllid ◽  
Management Guidelines ◽  
Fact Sheet ◽  
Citrus Leafminer ◽  
Citrus Production ◽  
Florida Citrus

ENY-734, a 6-page fact sheet by M.E. Rogers and P.A. Stansly, describes two important insect pests of citrus, the psyllid is a vector for citrus greening, and the leafminer exacerbates citrus canker. Includes management guidelines tables of chemical controls for bearing and non-bearing trees. Published by the UF Department of Horticultural Sciences, November 2006. ENY-734/IN686: 2018–2019 Florida Citrus Production Guide: Asian Citrus Psyllid and Citrus Leafminer (ufl.edu)

scholarly journals The Profitability of New Citrus Plantings in Florida in the Era of Huanglongbing

HortScience ◽  
2018 ◽  
Vol 53 (11) ◽  
pp. 1655-1663 ◽  
Author(s):  
Ariel Singerman ◽  
Marina Burani-Arouca ◽  
Stephen H. Futch
Keyword(s):  
Production Costs ◽  
Tree Planting ◽  
Citrus Greening ◽  
Citrus Industry ◽  
Market Conditions ◽  
The Past ◽  
Main Driver ◽  
Citrus Production ◽  
Florida Citrus ◽  
The Impact

The Florida citrus industry has been enduring the impact of citrus greening since 2005. The disease has been the main driver for the state’s citrus production to plummet by 80% in the past 13 years, causing the industry to downsize drastically. Planting new groves is key to ensuring a supply of fruit for processors and packinghouses to stay in business. However, a key question is whether it makes economic sense to plant a new grove in the current environment. We estimate the establishment and production costs for a new grove under endemic Huanglongbing (HLB; citrus greening) conditions for three different tree planting densities under different market conditions and examine their profitability. Our results show that establishing a new grove with a tree density similar to that of the state’s average is not profitable under current market conditions. However, greater tree densities are profitable despite the greater level of investment required.

2020–2021 Florida Citrus Production Guide: Weeds

EDIS ◽  
2020 ◽  
Author(s):  
Ramdas Kanissery ◽  
Stephen H. Futch ◽  
Brent A. Sellers
Keyword(s):  
Citrus Production ◽  
Florida Citrus
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