Paul White

Soil and Container Media Electrical Conductivity Interpretations

Edward Hanlon, B. L. McNeal, Edward A. Hanlon, andBrian L. McNeal
other_contacts: Paul White andRao Mylavarapu

This document is about interpreting electrical conductivity (EC) measurements in soils and container media to manage soluble salts from fertilizers, irrigation water, and storm events. It explains how excessive salts affect plant growth, provides guidelines for testing and interpreting EC values, and offers practical recommendations for leaching salts and preventing salt accumulation in landscapes, crops, and containerized plants. First printed April 1993.

Using Composted Poultry Manure (Litter) in Mulched Vegetable Production

George Hochmuth, Robert Hochmuth, and Rao Mylavarapu

This fact sheet answers vegetable producers’ questions about what poultry manure and litter are, what plant nutrients they contain, considerations for using them, results of research in Florida, how to use it in a mulched-bed system, and how to collect and submit for testing poultry manure samples.

An Introduction to Biochars and Their Uses in Agriculture

Rao Mylavarapu, Vimala D. Nair, andKelly T. Morgan
other_contacts: Paul White

A Summary of N and K Research with Muskmelon in Florida

George Hochmuth and Ed Hanlon

Lowering Soil pH to Optimize Nutrient Management and Crop Production

Rao Mylavarapu, George Hochmuth, Cheryl Mackowiak, Alan L. Wright, Maria L. Silveira, andMaria L. Silveira
other_contacts: Paul White

Collecting a Poultry Litter Sample for Analysis

George J. Hochmuth and Justin T. Jones

A Summary of N, P, and K Research with Pepper in Florida

George Hochmuth and Ed Hanlon

Summary of N, P, and K Research with Eggplant in Florida

George Hochmuth and Ed Hanlon

A Summary of N, P, and K Research with Sweet Corn in Florida

George Hochmuth and Ed Hanlon

The purpose of this publication is to summarize the historical Florida research literature on nitrogen, phosphorus, and potassium fertilization of sweet corn. This document is not meant to present new fertilization recommendations. The intent of this document is to review literature from all sources that pertains to commercial sweet corn fertilization in Florida's growing conditions.

Hoja de Información: Análisis de Agua

Rao S. Mylavarapu and Christopher Kerr

UF/IFAS Nutrient Management Series: Soil Sampling Strategies for Precision Agriculture

Rao S. Mylavarapu and Won Suk Daniel Lee

Field Symptoms of Boron Toxicity and Deficiency in Florida Peanuts

Rao S. Mylavarapu, Jacque. W. Breman, William D. Thomas, and Henry E. Jowers

Soil Sampling and Testing for the Home Landscape or Vegetable Garden

Amy L. Shober and Rao Mylavarapu

Hoja de Información: Análisis de Suelo para Productores

Rao S. Mylavarapu and Christopher Kerr

Agricultural Soils of Florida

Rao Mylavarapu, Willie Harris, and George Hochmuth

Análisis de Medios de Macetas

Rao S. Mylavarapu and Chris Kerr

Este documento es de las Hojas de Información de Análisis de Suelos. Utilice estas formas para enviar las muestras al UF/IFAS Laboratorio de Servicios Analíticos Laboratorio de Extensión de Análisis de Suelos.

Hoja de Información: Análisis de Suelo de Pinos

Rao S. Mylavarapu y Chris Kerr

Análisis de Suelo para Césped Comercial

Rao S. Mylavarapu and Chris Kerr

How to Calculate a Partial Nitrogen Mass Budget for Potato

Rishi Prasad and George Hochmuth

Calculating Recommended Fertilizer Rates for Vegetables Grown in Raised-Bed, Mulched Cultural Systems

George Hochmuth, Edward Hanlon, andEdward A. Hanlon
other_contacts: Paul White andRao Mylavarapu

Soil pH and Electrical Conductivity: A County Extension Soil Laboratory Manual

Rao Mylavarapu, Jamin Bergeron, and Nancy Wilkinson

A Summary of N, P, and K Research with Tomato in Florida

George Hochmuth and Ed Hanlon

Análisis de Nutrientes para Pastos de Bahía

Rao S. Mylavarapu and Chris Kerr

A Summary of N, P, and K Research with Snap Bean in Florida

George Hochmuth and Ed Hanlon

Hoja de Información: Análisis de Estiércol

Rao S. Mylavarapu and Chris Kerr

A Summary of N, P, and K Research with Cucumber in Florida

George Hochmuth and Ed Hanlon

Developing a Soil Test Extractant: The Correlation and Calibration Processes

George Hochmuth, Rao Mylavarapu, and Ed Hanlon

A Summary of N, P, and K Research with Watermelon in Florida

George Hochmuth and Ed Hanlon

SL-325, a 23-page illustrated fact sheet by George Hochmuth and Ed Hanlon, summarizes the historical Florida research literature on nitrogen, phosphorus, and potassium fertilization of watermelon.

A Summary of N, P, and K Research with Squash in Florida

George Hochmuth and Ed Hanlon

Nutrient Mass Budget—The Case of Florida Watermelon Phosphorus Export

George Hochmuth and Jerry Bennett

Hoja de Información: Análisis de Tejido Vegetal

Rao S. Mylavarapu and Christopher Kerr

Hoja de Información: Análisis para Productor de Cítricos

Rao S. Mylavarapu and Christopher Kerr

Soil-Test-Based Phosphorus Recommendations for Commercial Agricultural Production in Florida

Rao Mylavarapu, Yuncong Li, Maria L. Silveira, Maria L. Silveira, Cheryl Mackowiak, J. Mabry McCray, andJames M. McCray
other_contacts: Paul White

Diagnostic Nutrient Testing for Commercial Citrus in Florida

Rao Mylavarapu, Kelley Hines and Thomas Obreza

SL-279 presents the details of several types of diagnostic tests for nutrient status and management in commercial citrus groves in Florida, as well as sample submission procedures. Includes references and a copy of the sample submission form (in the pdf version).

Hoja de Información: Análisis de Suelo de Jardines y Huertos

Rao S. Mylavarapu and Chris Kerr

Sugarcane Nutrient Management Using Leaf Analysis

J. Mabry McCray and Rao Mylavarapu

Fertilizer Experimentation, Data Analyses, and Interpretation for Developing Fertilization Recommendations—Examples with Vegetable Crop Research

George Hochmuth, Ed Hanlon, and Allen Overman

Irrigation and Household Water Test and Interpretation

Rao Mylavarapu

Development of Bahiagrass Fertilization Recommendations: 1990–2008

Rao Mylavarapu, Edward Hanlon, Edward A. Hanlon, Cheryl Mackowiak, Maria L. Silveira, andMaria L. Silveira
other_contacts: Paul White

The intent of this document is to record changes in bahiagrass fertilization and liming recommendations from 1990 through 2008, and to summarize efforts of the various work groups and committees.

Watersheds of Florida: Understanding a Watershed Approach to Water Management

Rao Mylavarapu, Thomas Obreza, and Greg Means

Hoja de Información: Índice de Fósforo

Rao S. Mylavarapu and Chris Kerr

Soil pH and the Home Landscape or Garden

Amy L. Shober, Christine Wiese, Geoffrey C. Denny, and Rao Mylavarapu

Livestock Waste Testing Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

Contribución de las prácticas de producción de cultivos y las condiciones climáticas a la seguridad microbiológica de los tomates y pimientos

Massimiliano Marvasi, Max Teplitski, y George Hochmuth

Soil Testing for Plant-Available Nutrients—What Is It and Why Do We Use It?

George Hochmuth, Rao Mylavarapu, and Ed Hanlon

Hemp Fertilization: Current Knowledge, Gaps and Efforts in Florida: A 2020 Report

Rao Mylavarapu, Zachary Brym, Luis Monserrate, and Michael J. Mulvaney

Cost Share Programs for Florida's Agricultural Producers and Landowners

Rao Mylavarapu, Kelley Hines, and Tatiana Borisova

Understanding Nitrogen Transformations and Cycling for Sweet Corn Production in Sandy Soils

Rishi Prasad and George Hochmuth

Anaerobic Digesters for Manure Management at Livestock Operations

Rishi Prasad, George Hochmuth, and Ann C. Wilkie

UF/IFAS Extension Nutrient Management Series: Container Media Nutrient Test Interpretation

Rao Mylavarapu, Thomas H. Yeager, andThomas H. Yeager
other_contacts: Paul White

UF/IFAS Nutrient Management Series: UF/IFAS Standardized Nutrient Recommendation Development Process

Rao S. Mylavarapu

Fertilizer Recommendation Philosophies

George Hochmuth, Rao Mylavarapu, and Ed Hanlon

Plant Tissue Analysis and Interpretation for Vegetable Crops in Florida

George Hochmuth, Edward Hanlon, andEdward A. Hanlon
other_contacts: Paul White andRao Mylavarapu

A UF/IFAS numbered Fact Sheet for Commercial audience(s). in support of UF/IFAS Extension program: Plant Systems

UF/IFAS Standardized Fertilization Recommendations for Agronomic Crops

Rao Mylavarapu, David L. Wright, Hardeep Singh, Sudeep S. Sidhu, andSudeep S. Sidhu
other_contacts: Paul White

This publication presents in abbreviated form the fertilization recommendations for agronomic crops based on soil tests performed by the UF/IFAS Extension Soil Testing Laboratory (ESTL). It contains the basic information from which ESTL soil-test reports and fertilization recommendations are generated.

Phosphorus Index Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Phosphorus Index Test Form (SL394), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

Principles of Sound Fertilizer Recommendations

G. Hochmuth and E. Hanlon

A UF/IFAS numbered Fact Sheet.

Producer Citrus Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Producer Citrus Test Form (SL396), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

Commercial Vegetable Fertilization Principles

G. J. Hochmuth and E. A. Hanlon

A UF/IFAS numbered Fact Sheet for Commercial audience(s).

Plant Tissue Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Plant Tissue Test Form (SL131) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees.

Optimizing Nitrogen Management for Sustainable Tomato Production in North Florida

Laura Jalpa, Rao Mylavarapu, George Hochmuth, Yuncong Li, andBalasubramanian Rathinasabapathi
other_contacts: Paul White

Tomato is a vital commercial crop in north Florida, where the unique sandy soils present specific challenges for nitrogen (N) management. This publication evaluates the benefits of using polymer-coated controlled-release urea, which demonstrates a capacity to maintain crop yields comparable to those achieved using conventional fertigation methods and N sources. Our research findings emphasize the importance of adjusting N application rates to align with the crop nitrogen requirement and account for seasonal variability in natural soil mineralization rates. These adjustments are crucial for optimizing nitrogen use efficiency and sustainability in tomato cultivation. The publication offers practical recommendations for local growers on selecting optimal N rates and sources. Additionally, these guidelines aim to enhance the sustainability of commercial tomato production by incorporating advanced fertilizer technologies and precise N management practices tailored to local conditions.

Impact of Phosphorus on Water Quality

Rao Mylavarapu
other_contacts: Paul White

SL-275 highlights the role of phosphorus, interactions with the environment, and its potential impact on water quality. It is intended to serve audiences such as high school students, farmers, and the general public seeking information on the causes and mechanisms of potential phosphorus effects on water quality. Includes references.

UF/IFAS Standardized Nutrient Recommendations for Vegetable Crop Production in Florida

Rao Mylavarapu, George Hochmuth, andGuodong Liu
other_contacts: Paul White

This publication presents the fertilization recommendations for vegetable crops based on soil tests performed by the UF/IFAS Extension Soil Testing Laboratory (ESTL). It contains the basic information from which ESTL soil test reports and fertilization recommendations are generated. The audiences for this information include commercial and small farmers, crop advisers and consultants, state and local agencies, fertilizer industry, and any interested individuals interested in sustainable nutrient and environmental management.

Landscape and Vegetable Garden Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Landscape and Vegetable Garden Test Form (SL136), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

General Recommendations for Fertilization of Turfgrasses on Florida Soils

T. W. Shaddox

A UF/IFAS numbered Fact Sheet for Commercial and Homeowner audience(s).

The Four Rs of Fertilizer Management

George Hochmuth, Rao Mylavarapu, and Ed Hanlon

A UF/IFAS numbered Fact Sheet. in support of UF/IFAS Extension program: Integrated Pest Management

Nutrient Testing Form for Bahia Pastures

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Nutrient Testing Form (SL395), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

UF/IFAS Nutrient Management Recommendation Series: Carrot

Robert Hochmuth, Vivek Sharma, Thomas Obreza, and Rao Mylavarapu

Nutrient management recommendations for carrot are described according to the standard UF/IFAS recommendation format of 1) a calibrated soil test result; 2) target soil pH; 3) the "4Rs" of fertilizer management: rate, timing, placement, and source; and 4) water management factors.

Commercial Sod Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Commercial Sod Test Form (SL393), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

Producer Soil Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Producer Soil Test Form (SL135), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

Container Media Test Form

Rao Mylavarapu, William D'Angelo, andNancy Wilkinson
other_contacts: Paul White

This document is the Container Media Test Form (SL134), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

Water Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

This document is the Water Test Form (SL133), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

UF/IFAS Analytical Services Laboratories (ANSERV Labs): Analytical Procedures and Training Manual

Rao S. Mylavarapu, Nancy Wilkinson, and Yvens Jean

The UF/IFAS Analytical Services Laboratories (ANSERV labs) have been in operation, under slightly different names, for nearly 70 years. Since 2008, the ANSERV Labs have been reorganized to accomplish specific research and cooperative extension service missions through two sections in each area- Analytical Research (ARL) and NELAC Certified Environmental Water Quality Labs (EWQL) for all researchers and students and Extension Soil Testing (ESTL) and Livestock Waste Testing Labs (LWTL) for all citizens and agencies of Florida.  The procedures described in this manual reflect the current methodologies for agricultural testing offered by the UF/IFAS Extension Soil Testing Laboratory (ESTL), the Livestock Waste Testing Laboratory (LWTL), the Analytical Research Laboratory (ARL), and the Environmental Water Quality Laboratory (EWQL). This Circular replaces previous information that is contained in other UF/IFAS publications.

Pine Nursery Soil Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

"This document is the Pine Nursery Test Form (SL132), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

UF/IFAS Nutrient Management Recommendation Series: Strawberry

Thomas Obreza, Shinsuke Agehara, Thomas A. Obreza, andRao Mylavarapu
other_contacts: Paul White

Nutrient management recommendations for strawberry are described according to the standard UF/IFAS recommendation format of 1) a calibrated soil test result; 2) target soil pH; 3) the "4Rs" of fertilizer management: rate, timing, placement, and source; and 4) water management factors.

UF/IFAS Nutrient Management Recommendation Series: Watermelon

Thomas Obreza, Robert Hochmuth, Mark Warren, Tatiana Sanchez-Jones, Craig Frey, Thomas A. Obreza, andRao Mylavarapu
other_contacts: Paul White

Nutrient management recommendations for watermelon are described according to the standard UF/IFAS recommendation format of 1) a calibrated soil test result; 2) target soil pH; 3) the "4Rs" of fertilizer management: rate, timing, placement, and source; and 4) water management factors.