Supplying Nutrients to Floriculture Crops Lesson 3
Next Generation Science/Common Core Standards Addressed! WHST.9 ‐ 12.9 Draw evidence from informational texts to support analysis, reflection, and research. (HS ‐ LS1 ‐ 1) HSSIC.B.6 Evaluate reports based on data. (HS ‐ LS2 ‐ 6)
Bell Work! 1. Name the nutrients needed for plant growth. 2. Describe pH and how it is modified. 3. Describe the components of a fertilizer. 4. Explain the methods of applying fertilizers to floriculture crops.
Interest Approach What Does for Plants What Vitamins Do for You? –Vitamins: C – health D – strength A – eyesight Calcium-bones Iron-blood –Elements N – growth P – blossoms Ca – cell strength K - roots
What are the nutrients needed for plant growth? 2 groups 1.Supplied by nature (mostly) C, H, & O 2.Supplied by fertilizer Nitrogen, Sulfur, …
Macronutrients - elements that are needed by the plant in the largest amount. Primary macros nitrogen (N) phosphorus (P) potassium (K) Secondary macros calcium (Ca) magnesium (Mg) sulfur (S).
Micronutrients -Needed in Smaller Amounts by the Plants, but Are Still Essential Boron (B) Copper(Cu) Chlorine (Cl) Iron (Fe) Manganese (Mn) Molybdenum (Mo) Zinc (Zn)
C HOPKNS CaFe Mg (mighty-good) This pneumonic is and easy way to remember the macronutrients. Now just remember the Micros! –Cu, B, Zn, Cl, Mo, Mn CuBZn Clean up Mo & Mn!
Soil Tests can be performed on the soil to determine which nutrients are present or deficient (absent or lacking). Are only as accurate as the test – you get what you pay for Can confirm nutrient deficiency shown by plant leaves.
pH potential of Hydrogen. A measure of alkalinity or acidity. pH ranges from 1 to 14. –1 being acid –14 being base (alkaline) Most plants prefer pH of 6.5 to 7.0 (neutral) pH is adjusted by using limestone or sulfur, as well as acid type fertilizers. Acidity/alkalinity varies greatly across NM.
Fertilizer Material provided to supply nutrients needed for plant growth. –2 types of fertilizer Complete – contains the 3 Primary Macros Incomplete – missing 1 or more Primaries Fertilizer analysis states the percentage of primary nutrients.
16 – 4 – 8 16 % N 4 % P 2 O 5 8 % K 2 O Equals 28%??? Where is the rest?!? Salts and other carriers make up the remaining 72%
Fertilizer Available in three phases –Liquid, solid, gas (rarely used in floriculture) Applied by several methods Premixed into soil. Sprayed onto foliage. Injected into irrigation water. Slow release – dissolves over extended period of time.
What are the nutrients needed for plant growth? Name the 3 nature supplied nutrients. CHO Name the 3 primary macronutrients. NPK Name the 3 secondary macronutrients. CaSMg The micronutrients? Fe., Cu B, Zn, Cl, Mo, MN
What is pH and how is it modified? Define pH. Measure of acidity / alkalinity –potential of Hydrogen Add limestone to _________ pH? Add sulfur to ___________pH?
What are the components of a fertilizer? Incomplete vs. complete? Complete has the 3 primary macros Incomplete is missing some primaries What is fertilizer analysis?
How are fertilizers applied to floriculture crops? List the 3 phases of fertilizers. Liquid, solid, gas List the application methods. Irrigation injection Slow release Premix into soil Spray onto foliage