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Browse by Author: Luke Gatiboni
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1. Soils & Plant Nutrients

By: Luke Gatiboni

This Soils and Plant Nutrients Chapter from the Extension Gardener Handbook examines the physical and chemical properties of soil as well as the important role organic matter plays. The chapter discusses how to submit a soil sample for testing and how to read the report to apply necessary fertilizers.

Soil Acidity and Liming: Basic Information for Farmers and Gardeners

By: Luke Gatiboni, David Hardy SoilFacts

An introduction to soil acidity and liming for farmers and gardeners to increase crop income and improve lawn and garden performance. Topics covered include soil pH, soil testing, liming standards and application and incorporation of lime into soil.

Nitrogen Management and Water Quality

By: Luke Gatiboni, Deanna Osmond SoilFacts

This factsheet describes the effect of fertilizer nitrogen on water quality and the environment. It provides guidelines for managing soil fertility on farms to preserve water quality.

Soil Sampling Strategies for Site-Specific Field Management

By: Rob Austin, Luke Gatiboni, John Havlin SoilFacts

This factsheet for farmers describes concepts, terminology, and guidelines concerning soil sampling. Proper testing allows farmers to apply the correct amount of lime and fertilizer to fields.

Soil Acidity and Liming for Agricultural Soils

By: Luke Gatiboni, David Hardy SoilFacts

Nearly all North Carolina soils are naturally acidic and need lime, which neutralizes the acidity, for optimum growth of crops, forages, turf, trees, and many ornamentals. Nature and cause of acidity, benefits of proper lime usage, soil testing and target pH, liming materials and lime application and incorporation are presented in this publication.

Best Management Practices for Agricultural Nutrients

By: Ekrem Ozlu, Deanna Osmond, Daniel Line, Luke Gatiboni, Steph Kulesza SoilFacts

This factsheet for farmers describes ways to control the harmful effects of excess nutrients while maintaining healthy, productive farm crops. Steps covered include testing your soil and following the soil testing recommendations, setting realistic yield goals, choosing the most suitable nitrogen sources, applying nitrogen correctly, using manure as a nutrient source, controlling erosion, managing water flow and fencing animals away from water flow.

Careful Soil Sampling—The Key to Reliable Soil Test Information

By: Luke Gatiboni, Deanna Osmond, David Hardy SoilFacts

This publication explains how to obtain representative soil samples and to submit them for analysis. Where and when to take samples, proper sampling techniques, and submitting the samples for analysis are all covered.

Winter Annual Cover Crops

By: Luke Gatiboni, Chris Reberg-Horton SoilFacts

This publication discusses production of winter annual cover crops, their benefits and management. Research has shown several important benefits of planting winter annual cover crops, chief among them erosion control, addition of nitrogen (N) to the soil for use by a subsequent crop, removal of nitrogen from the soil to prevent nutrient loading, buildup of soil organic matter and buildup of residue that acts as a mulch for water conservation or retention.

North Carolina Soybean Production Guide

By: Katherine Drake Stowe, Rachel Vann, Carl Crozier, Gary Bullen, Jim Dunphy, Wesley Everman, Luke Gatiboni, Adrienne Gorny, David Hardy, Ryan Heiniger, Steph Kulesza, Deanna Osmond, Nick Piggott, Dominic Reisig, Gary Roberson, Heidi Schweizer, Lindsey Thiessen, Derek Washburn

This publication provides information to growers about soybean production in North Carolina. It discusses economic trends and forecasts, cultural practices, variety selection, planting decisions, nutrient management, diseases and pests, and other production practices.

Soils and Water Quality

By: Luke Gatiboni, Steph Kulesza, Deanna Osmond SoilFacts

North Carolina has an abundant supply of clean water, a resource vital to our high quality of life. Rivers, lakes, groundwater aquifers, and coastal estuaries are crucial to public health, economic development, and recreational opportunities. However, our water sources are constantly threatened with degradation by such activities as imprudent development, improperly managed agricultural and industrial activities, and unsound waste disposal practices. The soil exerts an important influence on water quality. How we manage the soil and what we put on it determine, in part, the level of treatment required to make our water supplies safe and enjoyable. This fact sheet explains how soils influence water quality and why efficient soil management helps protect water quality.

Nutrient Removal by Crops in North Carolina

By: Luke Gatiboni, John Filippi, Steph Kulesza, Deanna Osmond SoilFacts

This publication discusses nutrient removal by crops, which is useful in comparing the nutrient demands of different crops in conjunction with soil testing. The publication also includes a table of the estimated nutrient removal rates of various crops.

2024 Cotton Information

By: Keith L. Edmisten, Daisy Ahumada, Charles W. Cahoon, Guy D. Collins, Jeffrey H. Dorfman, Luke Gatiboni, Adrienne Gorny, Anders Huseth, Dominic Reisig, Rachel Atwell Vann, Derek Washburn, David H. Hardy

2024 Cotton Information is meant to help growers plan for the coming year and make management decisions based on the unique opportunities and challenges the year might bring.

Minimizing Risks of Soil Contaminants in Urban Gardens

By: Luke Gatiboni, Carl Crozier, Lucy Bradley SoilFacts

This publication alerts prospective gardeners to some of the most common contaminants in urban soils, such as lead and other toxic metals, solvents, pesticides and total petroleum hydrocarbons. This will help minimize potential risks to gardeners and to those who consume garden produce. The document includes information regarding site characterization, common contaminants, soil testing, interpretation of results and strategies for reducing exposure risks.

Lime Equivalence of Fine-Ground Basalt Rock

By: Luke Gatiboni, David Hardy, Deanna Osmond

Fine-ground basalt rock has recently become available as a soil amendment in North Carolina. This publication discusses the agricultural application of fine-ground basalt rock, the results of an incubation study to determine its lime equivalence, and its effects on soil nutrients and fertility.

Managing the Impact of Floodwater Contaminants on Soil and Produce in Residential, Community, and School Vegetable Gardens

By: Carl Crozier, Benjamin Chapman, Catherine Kastleman, Elizabeth Shapiro-Garza, Bryan Luukinen, Samuel Cohen, Steve Yang, Luke Gatiboni, Lucy Bradley

This publication discusses how floods can affect food gardens. In it, you'll find recommendations for preparing your garden before a flood, precautions to take after the storm, and how to safely clean up and replant after floodwaters recede.

Fertilization and Nutrient Management

By: David Hardy, Steph Kulesza, Luke Gatiboni

This publication, chapter 6 of the North Carolina Soybean Production Guide, covers fertilization and nutrient management in soybean production.

Soil pH Management for Fraser Fir Christmas Tree Production

By: David Hardy, Luke Gatiboni SoilFacts

This publication offers a discussion on how to lime Fraser fir Christmas trees. Fraser fir Christmas trees require a lower soil pH than most crops grown in North Carolina. Special management strategies for soil pH, calcium, and magnesium are needed to provide proper nutrition without over-liming.

Selecting a Strip-Till Rig

By: Ekrem Ozlu, Luke Gatiboni, Josh Heitman SoilFacts

Selecting the right tool for a job is essential. When that tool is as important and expensive as a farm implement, the same holds true—you want to buy farm equipment that does what you want; is strong, durable, and reliable; and is generally the best value for your money.

Chapter 9: Soil Management

By: Luke Gatiboni, Ekrem Ozlu

This chapter from the North Carolina Organic Commodities Production Guide discusses the organic standards for soil management.

Managing Lawns and Gardens to Protect Water Quality

By: Deanna Osmond, Luke Gatiboni SoilFacts

The purposes of this factsheet are to identify several major pollutants that often originate in lawns and gardens, to describe the problems they may cause, and to outline some things that can be done to minimize their adverse effects on water quality. This information should benefit home gardeners, landscape developers, contract lawn care specialists, athletic field managers and others who manage soil to grow plants for food, pleasure, or profit.

Mitigating Zinc and Copper Toxicity in North Carolina Soils

By: Steph Kulesza, Nathan Khot, Luke Gatiboni, Marissa Cohen

This publication discusses how excess zinc and copper from animal manure can lead to soil toxicity and harm crops in North Carolina. It covers where zinc and copper come from, potential harmful effects, and ways to prevent toxicity. Management strategies include soil testing, accurate manure application, record-keeping, and adjusting animal feed. Mitigation methods like soil turnover and pH modification are also discussed.

Saltwater Intrusion in Agricultural Fields in Northeastern North Carolina and Potential Remediation Options

By: Ekrem Ozlu, Alex Manda, Luke Gatiboni SoilFacts

This publication discusses the effects of saltwater intrusion on soil fertility, how to identify issues with salt-affected soils, and various options to address these problems.

Effects of Sodium Salts on Soils in Coastal Agricultural Fields

By: Ekrem Ozlu, David Hardy, Luke Gatiboni, Matthew Ricker SoilFacts

This publication provides information on the impacts wind-driven events have on the soil fertility. Salt water from storm surges, ocean spray, and tidal surges may increase sodium levels in coastal soils, which can be toxic to plants.

Muestrear el suelo cuidadosamente: la clave para obtener información confiable sobre el análisis de suelo

By: Luke Gatiboni, Deanna Osmond, David Hardy Datos sobre el suelo

Esta publicación explica cómo obtener muestras de suelo representativas y cómo enviarlas para que las analicen. Se incluye también dónde y cuándo tomar muestras, técnicas de muestreo adecuadas y el envío de las muestras para su análisis.

Changes in the Phosphorus Fertilizer Recommendations for Corn, Soybean, and Small Grains in North Carolina

By: Luke Gatiboni, David Hardy, Deanna Osmond SoilFacts

This publication provides updated recommendations for phosphorus fertilizer application in corn, soybean, and small grains crops. It includes background and historical information about phosphorus critical levels, phosphorus rate recommendations, phosphorus accumulation in soils, and changes in recommendations.

Modifying Soil for Plant Growth around Your Home

By: Luke Gatiboni, Ekrem Ozlu, Christina Kranz, Josh Heitman SoilFacts

This publication addresses the two major soil problems found on residential properties and how to rectify them: lack of the three necessary nutrients (phosphorus, nitrogen and potassium) and soil pH.

Calculating the Rate of Acidifiers to Lower the pH of North Carolina Soils

By: Luke Gatiboni, David Hardy, Deanna Osmond, John Havlin SoilFacts

Plants differ in their tolerance to soil pH. This publication provides information on determining the target pH for different crops and calculating the appropriate amount of materials to reduce soil pH when necessary.

Cold Injury and Boron (B) Deficiency in Tobacco Seedlings

By: Matthew Vann, Luke Gatiboni SoilFacts

This publication describes differences between cold injury and boron deficiency in tobacco seedlings grown in float greenhouses and provides management tips.

Alternative Synthetic Nitrogen Fertilizer Products for Row Crop Production

By: Deanna Osmond, Luke Gatiboni SoilFacts

Nitrogen fertilizer products are being developed and marketed as having the potential to increase yields and nutrient use efficiency, and decrease volatilization (gas). How do these products actually perform on different soils and row crops, under various climatic conditions? This publication summarizes findings from recent studies that investigated alternative nitrogen fertilizer products for row crops in four North Carolina regions.

Starter Phosphorus Fertilizer and Additives in North Carolina Soils: Use, Placement, and Plant Response

By: Luke Gatiboni, Deanna Osmond, David Hardy, Steph Kulesza SoilFacts

Phosphorus (P) is the second most important nutrient in crop production but is often found in relatively low amounts in native soils. Decades of fertilizer application have led to P enrichment of most North Carolina agricultural soils. Excess soil P that leaves agricultural fields via runoff and drainage can cause algal blooms in water resources that lead to impaired drinking water quality and can limit recreational activities. Maintaining adequate soil P levels for crop growth can reduce P runoff, save money, and protect the environment

Mid-Season Soybean Magnesium (Mg) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of magnesium deficiency in soybean production in North Carolina.

Fertilization

By: Luke Gatiboni, David H. Hardy

This publication, chapter 7 of the 2024 Cotton Information handbook, provides information about fertilization for cotton crops.

Sulfur Fertilization of North Carolina Crops

By: Luke Gatiboni, David Hardy SoilFacts

Adequate sulfur is necessary for crops, but there’s no one-size-fits-all recommendation for application in North Carolina. Best management practices take sulfur removal and incidental sulfur inputs for the entire crop rotation, soil type and profile depth layers and soil and plant analysis results.

North Carolina Realistic Yield Expectations and Nitrogen Fertilizer Decision Making

By: Deanna Osmond, Luke Gatiboni, Steph Kulesza, Rob Austin, David Crouse

This publication discusses the Realistic Yield Expectations database as a resource for nitrogen fertilization rate decisionmaking. Topics include recent research and the resulting updates to the database for improved nitrogen fertilizer rates based on new yield data.

Mid-Season Soybean Sulfur (S) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of sulfur deficiency in soybean production in North Carolina.

Phosphorus Management for Land Application of Biosolids and Animal Waste

By: Steph Kulesza, Luke Gatiboni, Karl Shaffer, Deanna Osmond, Sanjay Shah SoilFacts

This publication addresses nutrient management concerns as they relate to land application of animal wastes, municipal biosolids, industrial residuals and agricultural by-products, with a focus on phosphorus application and its impact on the environment. Methods for reducing phosphorus loss from land application sites are presented as general guidance for managers of land application systems, who must be knowledgeable of regulatory issues and permit restrictions as they relate to phosphorus and nutrient management.

Improving Lawn Care and Gardening

By: Luke Gatiboni, Deanna Osmond, Rich McLaughlin SoilFacts

This question and answer worksheet will help homeowners focus on potential problems with drinking water or other water resources that may be caused by improper lawn or garden care. Use and storage of fertilizers and pesticides, watering plants, landscape design and soil erosion are discussed.

Agricultural Nitrogen Accounting in Nutrient Impaired and Regulated River Basins: The Nitrogen Loss Estimation Worksheet Tool

By: Deanna Osmond, Luke Gatiboni SoilFacts

This publication discusses how the Nitrogen Loss Estimation Worksheet Tool can be used to account for agricultural nitrogen levels as an alternative to water quality monitoring.

Mid-Season Soybean Nitrogen (N) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of nitrogen deficiency in soybean production in North Carolina.

Mid-Season Soybean Copper (Cu) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of copper deficiency in soybean production in North Carolina.

Managing Nutrients

By: Matthew C. Vann, Luke Gatiboni, Maggie James, Loren R. Fisher

This publication, chapter 5 of the 2024 Flue-Cured Tobacco Information handbook, offers information of managing nutrients in tobacco production.

Alternative Product Demonstration and Research Guidelines for Extension Agents

By: Deanna Osmond, Luke Gatiboni, Robert Richardson, Hannah Burrack, Lindsey Thiessen, Joe Neal, Katie Jennings

This publication provides guidance to Extension agents on how to design and conduct trials and demonstrations on alternative products for plant and soil health and pest and disease control purposes. It provides standardized experimental design criteria and best practices for planning and executing trials for these products.

Mid-Season Soybean Phosphorus (P) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of phosphorus deficiency in soybean production in North Carolina.

Mid-Season Soybean Zinc (Zn) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of zinc deficiency in soybean production in North Carolina.

Mid-Season Soybean Molybdenum (Mo) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of molybdenum deficiency in soybean production in North Carolina.

Long-Term Tillage Effects on Corn and Soybean Yield in the Piedmont

By: Alex Woodley, Luke Gatiboni, Joshua Heitman, A. M. Howard SoilFacts

This publication discusses tillage treatments for large-seeded crops like corn and soybeans in the Piedmont region and recommends minimizing tillage based on research at the Upper Piedmont Research Station.

Selecting Nitrogen Rates in North Carolina: Recent Work on Corn and Wheat

By: Rob Austin, Luke Gatiboni

This publication discusses the results of recent nitrogen rate trials in the North Carolina coastal plain that assessed the recommendations of the Realistic Yield Expectation (RYE) database.

Mid-Season Soybean Manganese (Mn) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of manganese deficiency in soybean production in North Carolina.

Aluminum (Al) Toxicity in Soybean

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of aluminum toxicity in soybean production in North Carolina.

Mid-Season Soybean Potassium (K) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of potassium deficiency in soybean production in North Carolina.

Mid-Season Soybean Boron (B) Deficiency

By: Luke Gatiboni, Carl Crozier Soybean Nutrient Deficiency Information

This Soybean Nutrient Deficiency Information factsheet describes the symptoms and management of boron deficiency in soybean production in North Carolina.

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