soil nitrogen Articles
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Organic amendment history and crop rotation effects on soil Nitrogen mineralization potential and soil Nitrogen supply in a potato cropping system
Crop management practices influence readily and potentially available N in soil. In this study, we evaluated the effects of organic amendment history and crop rotation on potentially mineralizable N (N0), mineralizable N pools, and field estimates of soil N supply in potato (Solanum tuberosum L.) production, and evaluated a suite of N availability measures to detect changes in these parameters. ...
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Nitrogen fixation of Sulla under Mediterranean conditions
Sulla coronaria (L.) B.H. Choi & H. Ohashi (=Hedysarum coronarium L.) is a Mediterranean forage legume grown extensively in rainfed Italian environments. Here we report the field quantification of its seasonal and annual N fixation, using the 15N isotopic dilution (ID) method, the influence of various nonfixing reference species on these estimates, and the allocation of fixed N between the ...
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Multivariate analysis and visualization of soil quality data for no-till systems
To evidence the multidimensionality of the soil quality concept, we propose the use of data visualization as a tool for exploratory data analyses, model building, and diagnostics. Our objective was to establish the best edaphic indicators for assessing soil quality in four no-till systems with regard to functioning as a medium for crop production and nutrient cycling across two Illinois ...
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Cover crop and nitrogen effects on maize productivity in no-Tillage Systems of the Brazilian cerrados
Cover crops in direct seeding mulch-based cropping (DMC) systems can be an effective tool to optimize N management for crop production in the Brazilian cerrados. The objective of this study was to determine the effect of four cover crops on maize (Zea mays L.) grain yields in two fields that had been under DMC for 3 and 14 yr. We hypothesized that cover crops would optimize N supply to the maize ...
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Cover Crop and nitrogen effects on maize productivity in no-tillage systems of the Brazilian Cerrados
Cover crops in direct seeding mulch-based cropping (DMC) systems can be an effective tool to optimize N management for crop production in the Brazilian cerrados. The objective of this study was to determine the effect of four cover crops on maize (Zea mays L.) grain yields in two fields that had been under DMC for 3 and 14 yr. We hypothesized that cover crops would optimize N supply to the maize ...
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Soil management practices for sustainable agro-ecosystems
A doubling of the global food demand projected for the next 50 years poses a huge challenge for the sustainability of both food production and global and local environments. Today’s agricultural technologies may be increasing productivity to meet world food demand, but they may also be threatening agricultural ecosystems. For the global environment, agricultural systems provide both sources and ...
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Agronomically Speaking: Fall Fertility? From Soil Test to Prescriptions
Farmers understand that soil fertility is a key component of growing healthy and high yielding crops. While there is much debate on how we accomplish soil fertility and health, there are some general items that are helpful to remember. However, because it was an extremely wet year for many across the country it is even more important to soil test this year. Some of the nutrients ...
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Is less more? Understanding the Law of Minimum to optimize your fertilizer strategy
Identify and correct crop nutrient deficiencies in your soil to increase yield and profit Achieving prosperity in Canadian agriculture is a balancing act. While new technologies increasingly grow your potential to overcome limiting factors and boost yields, oftentimes revisiting the basics will further support your efforts to reach an optimum balance in soil nutrients. A great place to start is ...
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One crop, two ways, multiple benefits
Nitrogen fixation is one of the best examples of cooperation in nature. Soil microbes – naturally occurring bacteria in the soil – work with plants to pull nitrogen from the air. They turn the nitrogen into a form the plant is able to use. In return, the plant lets the microbes eat some of the sugars it makes. Faba beans (also called fava beans) are one example of plants that work ...
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Crop rotation and nitrogen input effects on soil fertility, maize mineral nutrition, yield, and seed composition
Knowledge of complex relationships between soils, crops, and management practices is necessary to develop sustainable agricultural production systems. Objectives were to determine how maize (Zea mays L.) would respond to monoculture (C-C), 2-yr rotation (C-S) with soybean [Glycine max (L.) Merr.], or 4-yr rotation (C-S-W/A-A) with soybean, wheat (Triticum aestivum L.), and alfalfa (Medicago ...
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From Data to Action: Leveraging Soil NPK Sensor Insights for Optimal Crop Management
Optimizing Crop Yields and Resource Efficiency through Precision Agriculture In the pursuit of sustainable agriculture, precision farming has emerged as a game-changer, revolutionizing agricultural practices and fostering a more efficient and environmentally responsible approach to crop production. At the heart of precision farming lies the concept of real-time data acquisition, enabling farmers ...
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Soil Nutrients and Field Health: what you Need to Know
The soil on your field is like the brain to your body. It tells your crops everything they need to know to produce a healthy yield; how many organisms live there, what the pH balance is, whether or not something is performing well… For the brain, if something isn’t performing well, the body can react catastrophically. The same thing happens with soil. If you have too much ...
By Growers
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Healthy soil key to readying your fields for the coming season
The more you know about your soil, the better enabled you will be to make fertilizer decisions that work on every area of your farm While harvest brings the 2023 growing season to a close, preparation for next year is already underway. Pat Kunz has signed up to have his soil tested across all his fields in anticipation of making informed fertilizer purchases for the upcoming spring. He says ...
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Biocontrol: How Strawberry Growers are leading the way
According to Dr. Surendra Dara of the University of California Cooperative Extension, 90-95% of strawberry growers in California use predatory mites to manage two-spotted spider mites. But how did this pest control method get so widely adopted? What can growers of other crops learn from this experience? To discuss this topic, I reached out to Lane Stoeckle, a certified crop advisor and pest ...
By UAV-IQ, LLC.
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