Niguss Solomon Hailegnaw

0000-0002-0781-6278

Variable Rate Irrigation Technology: A Step-by-Step Guide to Field Implementation

Haimanote Bayabil, Niguss Solomon Hailegnaw, and Vivek Sharma

This fact sheet explores variable rate irrigation (VRI) technology and its components and provides specific examples of field-scale applications of VRI technology with step-by-step guidelines for data collection, data interpretation, developing VRI prescription maps, and uploading maps for implementation. Written by Haimanote Bayabil, Niguss Solomon Hailegnaw, and Vivek Sharma, and published by the UF/IFAS Department of Agricultural and Biological Engineering, February 2025.

Fertilization of Sweet Corn, Celery, Romaine, Escarole, Endive, and Radish on Organic Soils in Florida

George J. Hochmuth, Edward Hanlon, George Snyder, Russell Nagata, Tom Schueneman, German V. Sandoya Miranda, Jehangir Bhadha, and Niguss S. Hailegnaw

Celery, sweet corn, endive, escarole, romaine lettuce, and radish are important crops on organic soils in Florida. This bulletin summarizes fertilization research results with these crops from the 1940s to the present. New interpretations of these compiled works were used to produce updated UF/IFAS Extension recommendations for fertilization of these six vegetable crops.

Understanding Fertilizers and Soil Amendments

Niguss Solomon Hailegnaw, Guodong Liu, and Y. C. Li

Choosing the right fertilizer/amendment type (organic or inorganic/synthetic) can impact soil health, plant vigor, environmental sustainability, and overall farm profitability. This guide provides a comparison of organic fertilizers/amendments and inorganic/synthetic fertilizers/amendments, covering their differences, advantages, disadvantages, and impacts on soil to aid growers in making informed decisions. Written by Niguss Solomon Hailegnaw, Guodong Liu, and Y. C. Li, and published by the UF/IFAS Department of Agronomy, October 2025.

Soil Organic Matter Impacts on Sugarcane Production on Florida Mineral Soils

J. Mabry McCray and Stewart Swanson

Sugarcane Leaf Tissue Sample Preparation for Diagnostic Analysis

J. Mabry McCray, Ronald W. Rice, and Ike V. Ezenwa

A UF/IFAS numbered Fact Sheet.

Elemental Sulfur Recommendations for Sugarcane on Florida Organic Soils

J. Mabry McCray

A UF/IFAS numbered peer reviewed Fact Sheet. in support of UF/IFAS Extension program: Agriculture Water

Potassium Fertilizer Recommendations for Sugarcane on Florida Mineral Soils

J. Mabry McCray

This publication is intended primarily for Florida sugarcane growers, but it may also be useful to researchers and others interested in sugarcane nutrition. It presents potassium fertilizer recommendations for Florida mineral soils and supporting information. Written by J. Mabry McCray, and published by the UF/IFAS Agronomy Department, September 2022.

Nutritional Requirements and Fertilizer Recommendations for Florida Sugarcane

J. Mabry McCray and Ronald W. Rice

This publication combines fertilizer recommendations for organic and mineral soils into a comprehensive guide for Florida sugarcane growers. Written by J. Mabry McCray and Ronald W. Rice, and published by the UF/IFAS Agronomy Department, revised January 2023.

Potassium Fertilizer Recommendations for Sugarcane on Florida Organic Soils

J. Mabry McCray

A UF/IFAS numbered peer reviewed Fact Sheet. in support of UF/IFAS Extension program: Agriculture Water

History and Methods of the Everglades Soil Testing Laboratory

J. Mabry McCray and Ronald W. Rice

This publication provides a history of the University of Florida Everglades Soil Testing Laboratory (EvSTL), current analytical methods, and information about fertilizer recommendations made by the laboratory. Written by J. Mabry McCray and Ronald W. Rice, and published by the UF/IFAS Agronomy Department, October 2023.

Nutrient Requirements for Sugarcane Production on Florida Muck Soils

J. M. McCray, H. S. Sandhu, R. W. Rice, and D. C. Odero

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

Phosphorus Fertilizer Recommendations for Sugarcane on Florida Mineral Soils

J. Mabry McCray

This presents phosphorus fertilizer recommendations for sugarcane produced for sugar on Florida mineral soils along with supporting information. Written by J. Mabry McCray, and published by the UF/IFAS Agronomy Department, August 2022.

Sugarcane Plant Nutrient Diagnosis

J. Mabry McCray, Ronald W. Rice, Ike V. Ezenwa, Timothy A. Lang, and Les Baucum

A UF/IFAS numbered Fact Sheet.

Plant Essential Nutrients and Their Role

Lakesh K. Sharma, J. Mabry McCray, and Kelly Morgan

The purpose of this publication is to inform Extension agents, consultants, and farmers about plant essential nutrients, benefits, and deficiency symptoms. This publication provides a whole plant picture with deficiency symptoms for each nutrient and the location of those symptoms on the plant. Written by Lakesh K. Sharma, J. Mabry McCray, and Kelly Morgan, and published by the UF/IFAS Agronomy Department, May 2022.

Calcium Silicate Recommendations for Sugarcane on Florida Mineral Soils

J. Mabry McCray

The publication presents recommendations for calcium silicate application for sugarcane grown on Florida mineral soils along with supporting information. Written by J. Mabry McCray, and published by the UF/IFAS Agronomy Department, August 2022.

Phosphorus Fertilizer Recommendations for Sugarcane Production on Florida Organic Soils

J. Mabry McCray, Ronald W. Rice, and Alan L. Wright

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

Calcium Silicate Recommendations for Sugarcane on Florida Organic Soils

J. Mabry McCray, Ronald W. Rice, and Leslie E. Baucum

A UF/IFAS numbered Fact Sheet.

Fertilization Recommendations for Crisphead Lettuce Grown on Organic Soils in Florida

George Hochmuth, Ed Hanlon, Russell Nagata, George Snyder, Tom Schueneman, J. Mabry McCray, and German Sandoya

This publication presents UF/IFAS recommendations for fertilization of crisphead lettuce on organic soils in Florida. Written by George Hochmuth, Ed Hanlon, Russell Nagata, George Snyder, Tom Schueneman, J. Mabry McCray, and German Sandoya, and published by the UF/IFAS Horticultural Sciences Department, revised January 2023.

Nitrogen Fertilizer Recommendations for Sugarcane Production for Sugar on Florida Sand Soils

J. Mabry McCray, Kelly T. Morgan, and Les Baucum

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