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Updated: January 9, 2023

Care and Calibration of Injector Pumps (FS-1121)

This fact sheet was developed to familiarize you with the care and up-keep of fertilizer injector pumps or proportioners and to discuss several methods of calibrating these pumps for effective and efficient application of nutrients and other materials on your plants. Proper care and calibration will prevent under or over application of nutrients and other treatments needed for appropriate plant growth. Authors: Andrew G. Ristvey and Charles F. Schuster; Title: Care and Calibration of Injector Pumps (FS-1121)
Updated: May 11, 2022

Soil Sampling for Optimizing Agricultural Production in Maryland (FS-1184)

Soil samples provide information about the soil fertility status of a field, which is used to generate nutrient and lime recommendations and develop a farm's nutrient management plan. This factsheet outlines proper soil sampling techniques (how, when, why) to optimize crop production, minimize environmental degradation, and maximize farm profitability. Authors: Brian Kalmbach and Dr. Gurpal Toor; Title: Soil Sampling for Optimizing Agricultural Production in Maryland (FS-1184)
Updated: November 4, 2021

Deep Row Entrenchment of Biosolids Using Hybrid Poplar

Deep-row entrenchment of biosolids using hybrid poplar tree species has the potential to be a beneficial reuse system that uses sustainable tree farming. This 3-part webinar series discusses the research and its application.
Updated: July 14, 2021

CAFO Permit Update

When everyone sent in their NOI (notice of intent) and your CAFO Fee, you also submitted your CNMP (Comprehensive Nutrient Management Plan) and your NMP (nutrient management plan). We (growers) were advised that if nothing changed in your operation, then your CNMP would stay the same. Your NMP, how much litter you will generate over the next 3 years should be updated, and additional information requested such as water shed etc. was filled out and submitted.
Updated: May 19, 2021

Willingness of Forest Landowners To Use Poultry Litter as Fertilizer

Forest landowners were surveyed about their willingness to use poultry litter as a forest fertilizer under a variety of financial incentives. Landowners with more acres, in certain counties, and who were younger were most likely to be willing. 
Updated: May 19, 2021

Effect of Deep Row Biosolid Application on Water Quality - University of Maryland Extension Fact Sheet

This fact sheet presents the findings of a water quality study at a biosolids deep-row entrenchment site.
Updated: May 18, 2021

Deep-Row Application of Biosolids to Grow Forest Crops on Mine Spoils

Deep-row application of biosolids on gravel spoils, when combined with the growth of nitrogen-demanding hybrid poplar trees, provides a natural recycling system that utilizes nutrients on-site, produces forest products, provides wildlife habitat, and reduces erosion.
Updated: May 18, 2021

Use of Deep-Row Biosolids Applications to Grow Forest Trees: A Case Study

Deep-row application of biosolids on reclamation sites is a unique alternative method of land application that solves many of the problems associated with surface application techniques.
Updated: May 18, 2021

Third Year Report for period of January 1, 2002 – December 31, 2004: Determination of Optimum Tree Density, Biosolid Application Rate, Water Quality Impacts and Tree Growth Effects Using the Deep Row Biosolids Incorporation Method

A three-year research and Extension education project was implemented to investigate the effect of application rate on water quality resulting from deep row biosolid applications.
Updated: May 18, 2021

Water Quality of Deep Row Biosolids Incorporation on a Tree Farm

Deep row incorporation of biosolids on sand and gravel reclamation sites is a unique alternative land application method that solves many of the problems associated with surface application techniques.