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www.extension.purdue.edu/extmedia/AY/AY-204.html

The purpose of this publication is to answer these and similar questions concerning types and uses of nitrogen fertilizers for crop production. It is hoped that the information presented here will help Hoosier farmers more accurately assess their current fertilizer programs and make those adjustments that will maximize their fertilizer dollar.

soilsmatter.wordpress.com/.../why-do-farmers-use-fertilizers

Question: I’ve heard that fertilizers can have negative effects. Why do farmers use fertilizers? Answer: All the nutrients in our food originally come from the soil. In order to create healthy crops full of nutrients, farmers need to work with healthy soil. Soils naturally contain many nutrients like nitrogen, phosphorous, calcium, and potassium.

www.hunker.com/.../list-of-common-agricultural-fertilizers

List of Common Agricultural Fertilizers By Frank Whittemore. SAVE; Fertilizers are chemical substances that are used to enrich soils with specific nutrients to help plants grow. The elements provided by fertilizers are typically nitrogen, phosphorus and potassium, although other elements such as calcium and sulfur are also available within ...

www.agriculture.com/crops/fertilizers

Fertilizers Boost yields and reduce input costs by more efficiently and effectively applying fertilizer. This section covers the equipment, technology, and application methods for better nitrogen management.

www.eaglewoodgourmetfood.com/types-of-fertilizers.html

Types of Fertilizers - Why Farmers Choose Inorganic Fertilizers Soils and plants need so many more nutrients than Nitrogen, Phosphorus and Potassium (also called NPK). But research has shown that it is these three that are the primary nutrients needed to produce bigger yields. To the farmer, with all the expenses involved in farming, coupled ...

www.gardeningknowhow.com/.../types-of-organic-fertilizer.htm

The types of organic fertilizer can come from plant, animal or mineral sources, depending on what chemicals your garden requires. In order to qualify as an organic fertilizer, the materials must naturally occur in nature. Fertilizer for organic gardening isn’t the quick and instant fix that chemical fertilizers can be.

www.reference.com/business-finance/farmers-use-fertilizers...

Why Do Farmers Use Fertilizers? when do farmers apply fertilizer fertilizer types and their uses list of different fertilizers how do farmers fertilize types of fertilizers farmers use fertilizer charts for crops types of agricultural fertilizers

bonnieplants.com/.../a-rundown-of-fertilizer-forms-and-types

Can I get by with one general-purpose fertilizer, or do I need different types? By enriching the soil with plenty of compost and organic matter, you will use less fertilizer. Vegetables need plenty of phosphorous and potassium, so the fertilizer you choose should contain plenty of each. For the longest-lived vegetables, such as tomatoes, you ...

articles.mercola.com/.../archive/2013/07/02/fertilizer.aspx

Vegetable farmers use even more than that. According to the featured article, 7 some use upwards of two tons of nitrogen each hectare (2.47 acres). 'Few of them think they’re doing anything harmful. No, no pollution,' says Song, when asked about the environmental effects of fertilizer,' the article states. "Scientists tell a different story.

www.epa.gov/.../agriculture-nutrient-management-and-fertilizer

Agriculture Nutrient Management and Fertilizer. On this page: ... that the composition of this particular waste is comparable to the materials that would otherwise be used to make this type of fertilizer, and that its typical use is not harmful. All other fertilizers that contain hazardous wastes are, however, subject to the contaminant ...