Items Tagged with 'nitrogen'

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Curran corn

Studying Cover Crop Decomposition and Nitrogen Release During Growing Season

To help understand cover crop decomposition and N release throughout the growing season, University of Nebraska researchers designed a study using “litterbags” — a common method to research crop decomposition. This research is part of the Precision Sustainable Agriculture (PSA), a collaborative project supported by the Agriculture and Food Research Initiative’s Sustainable Agricultural System Coordinated Agricultural Projects from the United States Department of Agriculture (USDA).


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Penn: Consider Early Kill for 2022 Non-Legume Covers

When a cover crop is terminated, the fresh residue is broken down by microbes in the soil. These microbes use N and other key nutrients found in the cover crop residue as fuel sources for the break-down process. However, if there is not enough N in the residue to complete the process, microbes will use N from the soil instead.
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Three Ways to Reduce Nitrogen Loss

Nitrate leaching is a major concern in coarse-textured agricultural soils because it can cause economic losses for farmers and contaminate groundwater. While some nitrate leaching may be inevitable when growing corn on sandy soils, there are several management strategies that can be implemented to limit nitrate loss. Here are some key takeaways from a recent five-year study looking at three major factors impacting nitrate leaching: drainage, nitrogen availability, and cropping system.


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red clover

Alfalfa, Red Clover can Furnish N for Following Crops

Legumes still can provide valuable N to today’s cropping systems. Legumes also contribute a non-nitrogen rotation effect due to addition of soil organic matter and improvement in soil health. Corn grown following alfalfa stands that are 2+ years old (and contained at least 50% alfalfa) require no nitrogen fertilizer on many soils. Red clover N credits are less than for alfalfa.


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Cover Crops Effective at Reducing Nitrate Concentrations in Tile-Drained Water, Study Shows

Cover crops were almost as effective as restored prairie at reducing nitrate concentrations in tile-drained water, according to recent research at Iowa State University.This was one of the key findings from a study led by Marshall McDaniel, associate professor of agronomy at Iowa State. The project was designed to better understand how the quantity and quality of tile drainage water impacts in-stream potential for nutrient enrichment, leading to growth of algae and depletion of vital oxygen in aquatic ecosystems.


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Dirt

Timing Cover Crop Termination to Meet Your Residue Goals

Cover crops are used to address multiple resource concerns and can provide a wide range of conservation benefits including reduced soil erosion, scavenged residual soil nitrogen, weed suppression, and supplemental livestock forage. The carbon to nitrogen (C:N) ratio of the cover crop determines the durability of the cover crop residue.


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Ohio State Offers Tips for Spring Manure Application

Last fall was not favorable for manure application to farm fields. Thus, many producers are interested in spring application with an eye on capturing the nitrogen contained in the manure to reduce the need for purchased nitrogen.
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Join top strip-tillers, agronomists and researchers for 2 days of unrivaled learning and networking!

Attend the 2022 National Strip-Tillage Conference in Iowa City, Iowa, July 28-29, and discover cutting-edge ideas, techniques and strategies from the most innovative, forward-thinking minds in strip-till to raise your level of strip-till profitability, efficiency and efficacy. 

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