Transcript Powerpoint
Section: Plant & Soil Science Unit: Soil Management Lesson Title: Lesson 3: Fertilizer Recommendations and Fertilizer Adjustments Lab Slide #1 Bake some chocolate cookies! You are making 200 cookies: You have the following quantities of ingredients 3/4 lbs of butter 1 ½ cups of brown sugar 2 cups of sugar 5 eggs 2 teaspoons of vanilla 8 cups of flour 2 1 1 6 teaspoons of salt teaspoon of baking soda cup of chopped nuts cups of chocolate chips Actual quantities needed You had the following quantities of ingredients 3/4 lbs of butter 2 teaspoons of salt 1 ½ cups of brown sugar 1 teaspoons of baking soda 2 cups of sugar 1 cup of chopped nuts 5 eggs 6 cups of chocolate chips 2 teaspoons of vanilla 8 cups of flour Adequate Deficient Excessive Slide #2 You need the following quantities of ingredients 1 lb of butter 2 teaspoons of salt 2 cups of brown sugar 2 teaspoons of baking soda 2 cups of sugar 2 cups of chopped nuts 4 eggs 4 cups of chocolate chips 3 teaspoons of vanilla 4.5 cups of flour Slide #3 PSS #4 Making Fertilizer Recommendations Student Learning Objectives (Enablers) As a result of this lesson, the student will: 1. 2. Use given data to make fertilizer recommendations for crops in Colorado. Be able to complete the fertilizer recommendation part of the Colorado Land Classification CDE. Slide #4 Fertilizer Recommendations for Irrigated Corn, Sorghum, and Sudan NITROGEN* Soil Test NO3-N Soil Test % Soil Organic Matter 0-0.5 06-1.0 Ppm 1.1-1.5 1.6-2.0 >2.0 (lbs/A fertilizer N) 0-6 250 235 220 205 190 7-12 220 205 190 175 160 13-18 190 175 160 145 130 19-24 160 145 130 115 100 25-30 130 115 100 85 70 31-36 100 85 70 55 40 37-42 70 55 40 0 0 43-48 40 0 0 0 0 >48 0 0 0 0 0 Slide #5 Fertilizer Recommendations for Irrigated Corn, Sorghum, and Sudan Phosphorous Soil Test P Fertilizer P (ppm) Lbs/A P2O5 0-3 4-7 8-11 >11 80 50 30 0 Slide #6 Fertilizer Recommendations for Irrigated Corn, Sorghum, and Sudan Potassium Soil Test K Fertilizer K (ppm) Lbs/A K2O 0-60 61-120 >120 64 40 0 Slide #7 Zinc recommendations for all crops ZINC Soil Test Irrigated Dryland ZINC (lbs/A fertilizer Zn) PPM Sensitive Crops (corn, sorphum, sudan, beans, potatoes) 0-0.9 10 5 1.0-1.5 5 0 >1.5 0 0 Other Crops 0-0.5 5 0 >0.5 0 0 Slide #8 Iron recommendations for all crops Iron Soil Test Fe Iron recommendation Fe Sensitive crops only (corn, sorghum, sudan, beans, potatoes (ppm) 0-3.0 Soil is deficient in available FE and corrective application will likely be beneficial. 3.1-5.0 Soil is marginally deficient in available iron and application may or may not be necessary. >5.0 No Fe fertilization is required Soluble Salts Crop Low Moderate Slide #9 High Electrical Conductivity (mmhos/cm) Sensitive Pinto beans, potatoes 0-2.5 2.6-5.0 >5.0 Moderately tolerant Corn, sugarbeets, millet, oats, alfalfa seeding, all grasses 0-4.0 4.1-8.0 >8.0 Tolerant Sorghum, barley, wheat, sudangrass, established alfalfa, forage sorphum x sudan 0-6.0 6.1-12.0 >12.0 Slide #10 Land Judging Scorecard FERTILIZER TREATMENT (5 points each) Recommendations in lbs/A _____ NO3-N _____ P2O5 _______ K2O _____ Zn _____ Fe SOLUBLE SALT LEVEL (5 points) low moderate high Slide #11 Assessment Crop to be fertilized------------Irrigated Corn Organic matter content-------1.0% Nitrogen soil test--------------25 ppm Phosphorous soil test---------7 ppm Potassium soil test------------121 ppm Zinc soil test--------------------0.8 ppm Iron soil test--------------------5.1 ppm Soluble salt reading-----------7.9mmhos/cm Slide #12 Answers to Assessment 115 lbs/A of N03-N 50 lbs/A of P2O5 0 lbs/A of K2O 10 lbs/A of Zn 0 lbs/A of Fe Moderate level of Soluble Salts Fertilizer worksheet for Irrigated corn, sorghum and sudan for grain Step Step Step Step 1. 2. 3. 4. Find Organic Matter and Write it here____________________ Find the Nitrogen PPM and write it here__________________ Using both numbers on the chart write your initial N rec. here______________ Subtract yield goal from 150 and write number here___________________ Step 5. If step 4 answer is zero then write step 3 answer on score sheet. Step 6. If step 4 answer different then zero go to step 7. Step 7. Take Step 4 answer divided by 25 and write answer here________________ Step 8. Take step 7 answer and multiply by 40 and write answer here______________ Step 9. If yield goal is greater than 150 ADD step 8 answer to step 3 number and write total answer on score sheet. Step 10. If yield goal is less than 150 SUBTRACT step 8 answer from step 3 answer and write total answer on score sheet. Fertilizer Worksheet for corn, sorghum, and sudan used for silage Step Step Step Step 1. 2. 3. 4. Find Organic Matter and Write it here____________________ Find the Nitrogen PPM and write it here__________________ Using both numbers on the chart write your initial N rec. here______________ Subtract yield goal from 30 and write number here___________________ Step 5. If step 4 answer is zero then write step 3 answer on score sheet. Step 6. If step 4 answer different then zero go to step 7. Step 7. Take Step 4 answer divided by 10 and write answer here________________ Step 8. Take step 7 answer and multiply by 40 and write answer here______________ Step 9. If yield goal is greater than 30 ADD step 8 answer to step 3 number and write total answer on score sheet. Step 10. If yield goal is less than 30 SUBTRACT step 8 answer from step 3 answer and write total answer on score sheet. Fertilizer Worksheet for Irrigated grass, grass legume hay, pasture and mountain meadows. Step 1. Find Organic Matter and Write it here____________________ Step 2. Find the Nitrogen PPM and write it here__________________ Step 3. Using both numbers on the chart write your initial N rec. here______________ Step 4. Subtract yield goal from 4 and write number here___________________ Step 5. If step 4 answer is zero then write step 3 answer on score sheet. Step 6. If step 4 answer different then zero go to step 7. Step 7. Take Step 4 answer multiply by and write answer here________________ Step 8. If yield goal is greater than 4 ADD step 7 answer to step 3 number and write total answer on score sheet. Step 9. If yield goal is less than 4 SUBTRACT step 7 answer from step 3 answer and write total answer on score sheet. Fertilizer worksheet for Dry-land Winter Wheat and other small grains Step 1. Find Organic Matter and Write it here____________________ Step 2. Find the Nitrogen PPM and write it here__________________ Step 3. Using both numbers on the chart write your initial N rec. here______________ Step 4. Subtract yield goal from 50 and write number here___________________ Step 5. If step 4 answer is zero then write step 3 answer on score sheet. Step 6. If step 4 answer different then zero go to step 7. Step 7. Take Step 4 answer divided by 10 and write answer here________________ Step 8. Take step 7 answer and multiply by 25 and write answer here______________ Step 9. If yield goal is greater than 50 ADD step 8 answer to step 3 number and write total answer on score sheet. Step 10. If yield goal is less than 50 SUBTRACT step 8 answer from step 3 answer and write total answer on score sheet.