Urea (46-0-0) usually has the lowest cost per pound of nitrogen compared to other single-element nitrogen fertilizers. However, urea undergoes unique chemical transformations when field applied and severe losses in efficiency may result if special management practices are not followed. The purpose of this fact sheet is to briefly describe urea transformations and to suggest how urea-N may be conserved with proper management in the field.

Fruit, vegetables and flowers definitely respond to feeding, resulting in much more pleasure and satisfaction from your efforts. This page will assist you to choose the right fertiliser and advise where and when to use it.

It’s the earth’s cultivated cropland that keeps humanity alive and thriving. Plants provide food, fiber, housing and a host of other benefits, and fertilizer plays a key role in this process. As the world population is expected to exceed 9 billion by 2050, fertilizer will be needed more than ever to boost crop production to keep people fed and healthy.All growing plants need 17 essential elements to grow to their full genetic potential. Of these 17, 14 are absorbed by plants through the soil, while the remaining three come from air and water.Generations of soil science have yielded knowledge of how to test nutrient levels in soil, how plants take them up and how best to replace those nutrients after harvest. That’s where fertilizer comes in.

Fertilisers are food for plants that can be bought in concentrated and compact form such as pellets, granules, powder, or liquid. Fertilisers that contain the three major nutrients, NPK, are known by a variety of terms. These include All purpose, All round, Complete, Compound, General Purpose and Universal. There are many different brands and types of all-round fertiliser. As these ‘general’ fertilisers, there are also fertilisers for specific plants such as tomatoes and roses.

Urea (46-0-0) usually has the lowest cost per pound of nitrogen compared to other single-element nitrogen fertilizers. However, urea undergoes unique chemical transformations when field applied and severe losses in efficiency may result if special management practices are not followed.

Look at the label on any fertilizer package, and you'll see three numbers separated by dashes, which correspond to the amounts of primary nutrients in the product. For example, one with three of the same number, 4-4-4, is called a "balanced" fertilizer because it has equal amounts of the Big 3 N-P-K (always shown in that order). A container of tomato food ($12, The Home Depot) might be labeled 2-5-3, which indicates higher amounts of P and less N and K. Why do these levels matter, and what do nitrogen, phosphorus, and potassium do for plants anyway? Here's what you need to know.

Ensuring an optimal level of nutrient is vital to maximize crop yield, and by extension, profitability. Too little fertiliser or nutrients available for crops limits the plant growth. Alternatively, too much fertiliser prevents the crops from taking up water through their roots, as they rely on osmosis to do it. Over-fertilisation increases the concentration of dissolved solids to the point that water flows out of the plants instead of into it, resulting in leaf burning or wilting, stunted growth and even death after a prolonged period. Furthermore, the excess fertilisers can leach into the farm’s surrounding, including groundwater sources and rivers, resulting in contamination or harmful algae blooms. When applying fertilizers, the plants and their root systems fare better when the level of nutrients stay consistent with minimal variation. 

Fertilisers are food for plants that can be bought in concentrated and compact form such as pellets, granules, powder, or liquid. Fertilisers that contain the three major nutrients, NPK, are known by a variety of terms. These include All purpose, All round, Complete, Compound, General Purpose and Universal. There are many different brands and types of all-round fertiliser. As these ‘general’ fertilisers, there are also fertilisers for specific plants such as tomatoes and roses.

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