What are the NPK (nitrogen, Phosphorous, Potassium)concentrations found in normal outdoor unaltered soil, that a plant would readily grow in? (Not taking into consideration special soils like sandy, or red clay.) Just "normal" soil.
2007-02-04 05:41:50 · 5 answers · asked by Fox_747 2 in Home & Garden ➔ Garden & Landscape
It depends on where you are in your part of the country. Soils are different everywhere. You could say a "normal", balanced soil would be 3-3-3 or maybe 5-5-5.
2007-02-04 05:45:57 · answer #1 · answered by Gary D 7 · 0⤊ 0⤋
First of all Fox, there is no normal soil as what is normal? Normal to a outback Australian is not normal to an Iowa corn producer or an Arizona cotton farmer. You pick any and that is ANY piece of ground in the world and proceed to divide it into equal portions; say one meter square sections, and then began testing soil samples from EACH section and you would be astounded at the wide variety of soils and nutrient levels present. The influencing factors of NPK levels are many fold. The optimum levels of NPK for any given soil is what level(s) do the plants that grow in that soil NEED? When the desired level(s) are known and compared with the existing level(s) then the optimum level(s) can be attained, for that plant in that soil. Your question is so general it can only be answered in general terms.
For example, being more specific, deserts soils are tanish - faun - light brown in color and are devoid of humus so they are traditionally low in N. Yet desert soils are high in, say K. The opposite can be found in black, Idaho, potato growing land. Everything is relative to something else.
2007-02-04 06:41:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋
N is very soluble and leaches too fast to be a factor
More important is soil pH needs of the plant IE you can't grow cactus, azaleas and tomatoes in the same soil
2007-02-04 06:06:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Normal soil doesnt exist different plants thrive in different soils
2007-02-04 07:00:33 · answer #4 · answered by fortyninertu 5 · 0⤊ 0⤋
The fertilizers that are 10 10 10 or 5 5 5 are equal in the amounts of nitrogen, phosphorus and potassium, or potash. If you want to do a general fertilizing they are great to use. Be advised that you want to go very easy at this time of the year because new growth is vulnerable to the winter. Then in the spring if you are wanting to green up get one that is higher in the first number. If you want to affect the flowering get one that is higher in the second one. The third number helps the general strength of the plant stems, and roots. If you go to a nursery you will find a lot of different specific fertilizer, and get thoroughly confused, but there should be someone there to advise you how to handle the specific types of plants that you have.
2016-05-24 04:13:00 · answer #5 · answered by Anonymous · 0⤊ 0⤋