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PUBLICATIONS
Better Crops, Better Environment...through Science
(Plant nutrition science news)
(Newsletter focused on topics of regional interest)
(Quarterly magazine of short technical articles)
(Quarterly one-page media releases on specific topics)
(Newsletter focused on topics of regional interest)
And also....
Best Management for Fertilizers on Northeastern Dairy Farms
Tom W. Bruulsema and Quirine Ketterings
In the past 10 years, many dairy farms in the humid temperate zone of northeastern North America have implemented best management practices (BMPs) for manure and fertilizer to address
concerns about nutrient buildup in soils and nutrient losses that can impact water and air quality. This Introductory Guide focuses on fertilizer BMPs: applying the right source at the right rate, at the right time, and in the right place.
Quantifying and Understanding Plant Nitrogen Uptake for Systems Modeling
Liwang Ma, Lajpat R. Ahuja, and Tom Bruulsema
FEATURES
• Documents complex and simpler methods used in N uptake simulations at the field and watershed scales
• Details documentation of simulating N fixation in legume crops
• Reviews current modeling approaches for plant N uptake in major agricultural system models
• Addresses limitations of current plant N uptake models
• Identifies knowledge gaps in plant N uptake modeling
• Quantifies interactions between N uptake and other agricultural processes and management practices
 Managing Crop Nitrogen for Weather
Bruulsema, TW, ed.
The contents of a new publication titled Managing Crop Nitrogen for Weather, based on the proceedings of a symposium at the 2006 meeting of the Soil Science Society of America (SSSA), provide details of experimental data and experiences of those engaged in efforts to improve prediction of crop nitrogen needs in response to weather conditions.
Greenhouse Gas Emissions from Cropping Systems and the Influence of Fertilizer Management
Snyder, CS, TW Bruulsema, and TL Jensen. 2007.
Greenhouse gas emissions from cropping systems and the influence of fertilizer management—a literature review. 32 pp.
A firm scientific understanding is needed about fertilizer nitrogen (N) use effects on the emissions of the three gases (carbon dioxide, nitrous oxide, and methane) considered to be the major agricultural contributors to what is often referred to as "the greenhouse effect". 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. The document contains over 30 pages of text, data, and a listing of more than 130 references on this topic.
Nutrient Use Efficiency and Effectiveness in North America: Indices of Agronomic and Environmental Benefit
Snyder, CS, and TW Bruulsema, International Plant Nutrition Institute
MINERAL FERTILIZERS have made it possible to sustain the world’s growing population, sparing millions of acres of natural and ecologically-sensitive systems that otherwise would have been converted to agriculture. Today, economic and environmental challenges are driving increased interest in nutrient use efficiency. Higher prices for both crops and fertilizers have heightened interest in efficiency-improving technologies and practices that also improve productivity. In addition, nutrient losses that harm air and water quality can be reduced by improving use efficiencies of nutrients, particularly for nitrogen (N) and phosphorus (P).
Fertilizing for Minimum Impact on Water Quality
Tom Bruulsema, Northeast Region Director
Fall is the best time to take soil samples. It can also be a good time to apply some fertilizer and manure, but the risk to water quality needs to be managed. Using the phosphorus index, that risk can be managed for the maximum benefit to soils and crops.
Fall Strip Tillage and Fertilization for Corn
Tom Bruulsema, Mike Stewart, Ray Lamond, Bill Deen, and Greg Stewart (Multi-regional)
From east to west, north and south, more and more farmers are adapting strip and zone tillage methods. Researchers are also taking a closer look at the nutrient management decisions associated with this approach. Conditions vary with soils, climate, and other factors. This article includes information from a broad geographic range.
Fall and Spring Fertilizer Options for Corn
Tom Bruulsema, Bill Deen, and Greg Stewart
Fall zone tillage is one way to overcome some of the problems of no-till. It also opens up new fertilizer placement options. Getting some of the phosphorus and potassium application done in the fall helps streamline spring field operations.
Fall Fertility for Forages - TW Bruulsema
Restoring phosphorus (P) and potassium (K) fertility is an important aspect of managing for optimum productivity. Key considerations are soil testing and plant analysis, factors affecting mineral content, replacing crop removal, and timely application of needed nutrients.
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