Book 29, Question 110 · Video
What do the three numbers on a fertilizer bag mean?
The three numbers, such as 10-10-10, stand for nitrogen, phosphorus, and potassium, abbreviated N-P-K. Nitrogen helps leafy growth, phosphorus supports roots and flowers, and potassium helps plants stay healthy and resist stress. The numbers tell the percent of each nutrient by weight. Different plants have different needs. Lawn fertilizers often have a lot of nitrogen.
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What Crafty Clover says in this video
Intro
Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. What do the three numbers on a fertilizer bag mean?
The Big Idea
Fertilizer bags have three numbers! Like 10-10-10. What do they mean?
Three Nutrients
Step one: Three Nutrients. The three numbers stand for nitrogen, phosphorus, and potassium, written N, P, and K. They tell the percent of each nutrient by weight, so a bigger number means more of that nutrient.
Each One's Job
Step two: Each One's Job. Nitrogen helps leafy growth, and phosphorus supports roots and flowers. Potassium helps plants stay healthy and handle stress.
Different Needs
Step three: Different Needs. Different plants have different needs. Lawn fertilizers often have a lot of nitrogen, while tomato fertilizers often have extra phosphorus and potassium.
A Closer Look
Let's take a closer look! Leaves. Roots and flowers. Health. Shows all three.
Quick Facts
Quick facts! Fertilizers sold for tomatoes often have extra phosphorus and potassium. N for leaves. P for flowers. K for health.
Think Like a Scientist
Now, think like a scientist! With a grown-up, look at a fertilizer label. Don't open or touch the fertilizer. Find the three numbers. Write down which is biggest. What kind of plant is it for?
Outro
The three numbers on a fertilizer bag stand for nitrogen, phosphorus, and potassium, or N-P-K, by percent weight. Nitrogen helps leaves, phosphorus helps roots and flowers, and potassium keeps plants healthy. Science is amazing! Keep asking questions! The more you look around, the more wonders you will find, so keep your eyes open! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!