Inter- vs Intra-â. âInter-â and âintra-â are two prefixes which are commonly used in the English language. They sound similar, but when used with other words form words which are very different from each other. These two prefixes cannot be used in place of one another. One should be careful while using âinter-â and âintra-â as they can change the meaning of the word altogether. Prefix intra-Intra- means âwithinâ or âinside.â When used as a prefix with words, it means âwithin a group.â There are many words which are formed with the prefix intra- for example, intracompany, intranet, intramural football, etc. There are many medical terms which also use the prefix intra- for example, intravenous, intracranial, etc.
Phosphorus is one of the 16 essential nutrients that plants need for growth and reproduction. Phosphorus is considered one of the three major nutrients. They are termed major nutrients because of the relatively large amounts utilized by plants and the frequency with which their deficiencies limit plant growth.
A plant needs nutrients to survive. Most of these are provided by the soil, but soil varies tremendously in nutrient amounts, soil type, pH, and nutrient availability. The three main nutrients that have been identified as absolutely necessary for plants are nitrogen (N), phosphorus (P) and potassium (K). These three are also known as macronutrients, and are the source of the three numbers commonly found on organic fertilizer labels. The numbers found on our All-Purpose Fertilizer, for example, are 5-5-5. This is the percentage by weight of the N, P, and K found in the fertilizer. So whatâs so important about nitrogen, phosphorus and potassium?