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 Nutrient Source Specifics Series Looking for brief information about the production, agricultural use, management practices, and chemical properties of common fertilizer materials? Read articlesGreenhouse Gas Emissions from Cropping Systems and the Influence of Fertilizer Management  Scientific staff of the International Plant Nutrition Institute (IPNI) have prepared a literature review to extend information that will lead to a better understanding of fertilizer N management practices that minimize global warming potential. Download a copy Fertilizer Nitrogen BMPs to Limit Losses that Contribute to Global Warming The right fertilizer N management decisions in producing corn and other crops can help reduce the impact on greenhouse gas (GHG) emissions and global warming potential. These fertilizer best management practices (BMPs) can go a long way toward making the most of applied N, for economic benefit as well as environmental. Science and experience show that the impact of a fertilizer BMP on crop yield, quality, profitability, and nutrient loss to water or air is greatly influenced by other agronomic practices such as plant population, cultivar, tillage, and pest management, as well as proven conservation practices. A new 8-page publication by IPNI Nitrogen Program Dr. Cliff Snyder, titled “Fertilizer Nitrogen BMPs to Limit Losses that Contribute to Global Warming”, takes a closer look and provides a practical overview. It is available in print or as a PDF file at this site. Click here. Download a copy |
 Nutrients and Hypoxia in the Gulf of Mexico — An Update on Progress, 2008 Based on data presented here and in the U.S. Environmental Protection Agency’s ScienceAdvisory Board (EPA SAB) 2008 report, there is reason to believe that declines in discharge of N and P to the Gulf of Mexico are proceeding through voluntary actions by farmers,their advisers, and their suppliers. Driven by global economic pressures, local and personalprofitability goals and objectives, and a greater environmental consciousness and stewardshipethic, farmers and practitioners are increasingly implementing fertilizer BMPs.These accomplishments are noteworthy and herald progress toward improved fertilizernutrient use efficiency, which may lead to reductions in N and P loss from farm fields andagricultural watersheds. Read Full Story  Cotton Response to Combinations of Nitrogen and Potassium  Cotton continues to be one of the major row crops in Mississippi Delta Region of Arkansas. Nitrogen and K fertilization of cotton in Arkansas is based on preplant soil test NO3-N and K levels and petiole NO3-N and K concentrations between first bloom and boll opening. This diagnostic approach is based on field research in late 70's and early 80's and enabled many Arkansas and other mid-south growers to produce high cotton yields for many years. However, cotton production practices have dramatically changed during the past two decades. more on this research |
Impact of Rising Nitrogen Prices  Natural gas represents a major portion of the cost of ammonia production, and concern continues about effects on nitrogen (N) fertilizer prices. Impact of Rising N PricesNew Nitrogen Fertilizer Products and Technologies Papers from the session New N Fertilizer Products and Technologies chaired by IPNI at the 2007 International Nitrogen Conference held in Costa do Sauipe, Brazil October 01 - 04, 2007. Click here to read the papersUSE OF YIELD GOALS FOR PROVIDING N RATE SUGGESTIONS: GENERAL CONCEPT Recent studies in the North Central region have shown a poor relationship between optimum yield of individual sites and optimum fertilizer N rate. The outcome has been the development of fertilizer recommendation approaches that do not consider site yield goal. This causes one to ponder how so many recommendation programs utilizing yield goal were developed in the first place and have continued in use for more than 40 years. It appears to be an appropriate time to review the general concept of use of yield goals in N recommendations. Such a review is the primary objective of this paper, presented by Paul Fixen at the 2006 Northcentral Extension-Industry Soil Fertility Conference with a secondary objective of relating the traditional concept to the recent studies suggesting a very limited role for yield goal in predicting N fertilizer need. Read Full StoryFrom the new series...  WILL BIOTECHNOLOGY REPLACE NITROGEN FERTILIZER? Read Full StoryManaging Nitrogen to Protect Water  Nitrogen fertilization is essential to crop production. Farmers can’t grow enough food to meet ever increasing world demands without it. The good news is that with proper management of available N fertilizer sources, farmers can achieve their yield goals and sustain water quality at the same time. Read this Enviro-Brief |
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