enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Nitrogen and Non-Protein Nitrogen's effects on Agriculture

    en.wikipedia.org/wiki/Nitrogen_and_Non-Protein...

    NPN can also be used to artificially raise crude protein values, which are measured based on nitrogen content, as protein is about 16% nitrogen and the only major component of most food that contains nitrogen is protein. The source of NPN is typically a chemical feed additive, or sometimes chicken waste, [7] [8] and cattle manure.

  3. Nutrient management - Wikipedia

    en.wikipedia.org/wiki/Nutrient_management

    Nitrogen fertilizer being applied to growing corn in a contoured, no-tilled field in Iowa.. Nutrient management is the science and practice directed to link soil, crop, weather, and hydrologic factors with cultural, irrigation, and soil and water conservation practices to achieve optimal nutrient use efficiency, crop yields, crop quality, and economic returns, while reducing off-site transport ...

  4. Nitrogen nutrition in the arbuscular mycorrhizal system

    en.wikipedia.org/wiki/Nitrogen_nutrition_in_the...

    Nitrogen is obtained by plants through roots from inorganic or organic sources, such as amino acids. [1] In agricultural settings, nitrogen may be a limiting factor for plant growth and yield, and in total, as a critical cellular component that a plant deficient in this nitrogen will shunt resources away from its shoot in order to expand its ...

  5. Organic fertilizer - Wikipedia

    en.wikipedia.org/wiki/Organic_fertilizer

    Grain meals can be made of corn gluten, alfalfa, cottonseed, or soybean. Most supply nitrogen and potassium, but soybean meal provides nitrogen and phosphorus. [27] When initially spread they can cause an increase in ammonia within the soil and burn seeds, it is recommended to use these after plants have developed, to ensure crop success.

  6. History of the Haber process - Wikipedia

    en.wikipedia.org/wiki/History_of_the_Haber_process

    The history of the Haber process begins with the invention of the Haber process at the dawn of the twentieth century. The process allows the economical fixation of atmospheric dinitrogen in the form of ammonia, which in turn allows for the industrial synthesis of various explosives and nitrogen fertilizers, and is probably the most important industrial process developed during the twentieth ...

  7. Multipurpose tree - Wikipedia

    en.wikipedia.org/wiki/Multipurpose_tree

    Coconut palm, a common multipurpose tree. Multipurpose trees or multifunctional trees are trees that are deliberately grown and managed for more than one output. They may supply food in the form of fruit, nuts, or leaves that can be used as a vegetable; while at the same time supplying firewood, adding nitrogen to the soil, or supplying some other combination of multiple outputs.

  8. Nutrient budgeting - Wikipedia

    en.wikipedia.org/wiki/Nutrient_budgeting

    An accurate nutrient budget is an important tool to provide an early indication of potential problems arising from (i) a nutrient surplus (inputs>outputs), leading to an accumulation of nutrients and increased risk of loss or (ii) a deficit (outputs>inputs), depleting nutrient reserves and increasing the risk of deficiencies and reduced crop yields.

  9. Crop rotation - Wikipedia

    en.wikipedia.org/wiki/Crop_rotation

    Both nitrogen-fixing legumes and nutrient scavengers, like grasses, can be used as green manure. [12] Green manure of legumes is an excellent source of nitrogen, especially for organic systems, however, legume biomass does not contribute to lasting soil organic matter like grasses do. [12]