The Daily Southerner, Tarboro, NC

Garden Tips

April 8, 2011

Using Organic Fertilizers

The Daily Southerner — Using Organic Fertilizers

(Family Features) Building up the fertility of the soil is one of the most important aspects of gardening. Synthetic fertilizers are manufactured products, while organic fertilizers are derived from plants, animals, or naturally occurring minerals. While both can go through a manufacturing process, there are advantages to using an organic fertilizer that's in a form close to its natural source.

The Advantage of Organics

The purest form of organic fertilizer is a plant-, animal-, or mineral-based fertilizer that is applied to the garden without any processing. Good examples of these are green manures, animal manures, and wood ashes. The advantage is that not only are main nutrients added to the soil, but organic matter and humus, as well. Organic matter improves soil structure, moisture retention, drainage, and the microbial life of the soil. An adequate amount of organic matter in the soil can help ensure that nutrients are available to plants on a steady basis and that the soil structure enhances root growth. Organic fertilizers dole out the nutrients more slowly than chemical fertilizers, so plant roots are less likely to be burned by getting too high a dose.

The best way to use organic fertilizers is to apply a combination of raw materials high in organic matter, such as manure, along with specific organic fertilizers to target crop needs.

This is not to say there isn't a place for synthetic fertilizers. They do have some advantages. They cost less and are easier to transport, and they are more uniform in nutrient content. With the exception of controlled-release formulations, most synthetic fertilizers are more quickly available to plants than organic fertilizers.

Types of Organic Fertilizers

Here are some examples of plant- and animal-based products you might use in your garden.

* Plant-Based Fertilizers

* Alfalfa Meal

* Corn Gluten

* Cottonseed Meal

* Seaweed

* Soybean Meal

* Animal-Based Fertilizers

* Blood Meal

* Bonemeal

* Fish Products

* Animal Manures

* Compost

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