Tables - Injector Planner: A Spreadsheet Approach to Fertilization Management for Greenhouse Tomatoes Table 1. Nutrient composition of individual fertilizers used to grow greenhouse tomatoes (elemental forms of P and K are shown in parentheses). Fertilizer % Nutrient Composition Calcium nitrate 15.5% N, 19% Ca Potassium nitrate 13.75% N, 44.5% K2O (36.9% K) Ammonium nitrate 34% N Urea 46% N Phosphoric acid 75% P2O5 32.8% P (amount may vary) Magnesium sulphate (epsom salt) 9.7% Mg, 13% S Potassium sulphate 50% K2O (41.5% K), 14.4% S Ammonium sulphate 21% N, 24% S Potassium chloride (muriate of potash) 60% K2O (49.8% K) Monoammonium phosphate (MAP) 12% N, 48% P2O5 (21% P) Diammonium phosphate (DAP) 16% N, 48% P5 (21% P) Monopotassium phosphate (MKP) 52% P2O5 (22.7% P), 34% K2O (28.2% K) Calcium chloride 36% Ca Table 2. Solubility limits of fertilizers used to grow greehhouse tomatoes (mass fertilizer per volume of cold water). Fertilizer Lb/100 Gal Kg/100 Liters Ammonium nitrate 984 118 Ammonium sulfate 592 71 Calcium nitrate 851 102 Calcium chloride 500 60 Diammonium phosphate (DAP 358 43 Monoammonium phosphate (MAP) 192 23 Potassium nitrate 108 13 Urea 651 78 Borax 8 1 Magnesium sulfate (epsom salt) 592 71 Potassium sulfate 83 10 Table 3. Conversion between elemental and molecular forms of phosphorus and potassium. K x 1.205 = K2O K2O x 0.83 = K P x 2.291 = P2O5 P2O5 x 0.437 = P Table 4. Lookup Table Including Nutrient Composition of Each Fertilizer. Fertilizers % N % P % K % Ca % Mg Calcium nitrate 15.50 19.00 Potassium nitrate 13.75 36.94 Potassium sulfate 41.50 Ammonium nitrate 34.00 Magnesium sulfate, epsom salt 9.70 Phosphoric acid (75%) 32.78 Monoammonium phosphate (MAP) 12.00 26.66 Diammonium phosphate (DAP) 16.00 20.98 Monopotassium phosphate (MKP) 22.72 28.22 Calcium chloride 36.00 Potassium chloride 51.46 Compound 111 6.67% Fe, 3.34% Mn, 5.5% Zn, 3.34% Cu, 1.34% B, 0.17% Mo Table 5. Using Anderson Injector with Individual Major Fertilizers. PPM Supplied From Each Fertilizer P4 Pumphead CaNO3 KNO3 K2SO4 NH4NO3 MgSO4 LB/GAL -----------------> 1 1 0.83 1 1 Dial Setting Injection Ratio 1:X N Ca N K K N Mg 1 3200 6 7 5 14 13 13 4 2 1600 12 14 10 28 25 26 7 3 1067 17 21 15 42 38 38 11 4 800 23 29 21 55 51 51 15 5 640 29 36 26 69 63 64 18 6 533 35 43 31 83 76 77 22 7 457 41 50 36 97 89 89 25 8 400 47 57 41 111 101 102 29 9 356 52 64 46 125 114 115 33 10 320 58 71 52 139 126 128 36 Note: KNO3 max is 1 LB/GAL; K2SO4 max is 13 OZ/GAL. Table 6. Using an Anderson Injector with Phosphoric Acid or MAP to Supply Phosphorus (with P1 Head). P1 Pumphead PPM Supplied From Each Fertilizer LB/GAL ----------------> 1 1 Dial Setting Injection Ratio 1:X Phosphoric Acid 75% P205 Monoammonium Phosphate (MAP) P N 1 12757 3 3 1 2 6378 6 5 2 3 4252 9 8 3 4 3189 12 10 5 5 2551 15 13 6 6 2126 18 15 7 7 1822 22 18 8 8 1595 25 20 9 9 1417 28 23 10 10 1276 31 25 11 Note: For liquid phosphoric 1 LB = 8.8 fluid oz. Table 7. Using an Anderson Injector with Phosphoric Acid or MAP to Supply Phosphorus (with P4 Head). P4 Pumphead PPM Supplied From Each Fertilizer LB/GAL -----------------> 1 1 Dial Setting Injection Ratio 1:X Phosphoric Acid 75% P205 Monoammonium Phosphate (MAP) P N 1 3200 12 10 5 2 1600 25 20 9 3 1067 37 30 14 4 800 49 40 18 5 640 61 50 23 6 533 74 60 27 7 457 86 70 32 8 400 98 80 36 9 356 111 90 41 10 320 123 100 45 Note: For liquid phosphoric acid 1 LB = 8.8 fluid oz. Table 8. Using Anderson Injector with Compound 111 as Formulated by Frit Industries to Supply Micronutrients. P4 Pumphead PPM OF EACH ELEMENT SUPPLIED LB/GAL ----------> 1 Dial Setting Injection Ratio 1:X Fe Mn Zn Cu B Mo 1 3200 2.5 1.3 2.1 1.3 0.5 0.006 2 1600 5.0 2.5 4.1 2.5 1.0 0.013 3 1067 7.5 3.8 6.2 3.8 1.5 0.019 4 800 10.0 5.0 8.3 5.0 2.0 0.026 5 640 12.5 6.3 10.3 6.3 2.5 0.032 6 533 15.0 7.5 12.4 7.5 3.0 0.038 7 457 17.5 8.8 14.4 8.8 3.5 0.045 8 400 20.0 10.0 16.5 10.0 4.0 0.051 9 356 22.5 11.3 18.6 11.3 4.5 0.057 10 320 25.0 12.5 20.6 12.5 5.0 0.064 IF YOU HAVE MINORS BLEND IN A CONCENTRATE TANK BY ITSELF, USE 1 LB/GAL OF MINORS BLEND AND USE A DIAL SETTING OF 2. IF YOU HAVE MINORS BLEND IN A CONCENTRATE TANK WITH MAGNESIUM SULFATE, USE 1/2 LB/GAL OF MINORS BLEND AND USE A DIAL SETTING OF 4. MIX 3 LB/GAL MAGNESIUM SULFATE --AT DIAL SETTING 4, THIS WILL PROVIDE 44 PPM Mg. Table 9. Using 15-10-30 with Anderson Injector System. LB -------> 25 LB TANK----> 50 GAL PPM Supplied From 15-10-30 using P4 Pumphead 15 10 30 Dial Setting Injection Ratio 1:X N P K 1 3200 3 1 5 2 1600 6 2 9 3 1067 8 2 14 4 800 11 3 19 6 640 14 4 23 6 533 17 5 28 7 457 20 6 33 8 400 23 7 37 9 356 25 7 42 10 320 28 8 47 Table 10. Using 4-18-38 with Anderson Injector System. LB -------> 25 LB PPM Supplied From 4-18-38 TANK----> 50 GAL P4 Pumphead 4 18 38 Dial Setting Injection Ratio 1:X N P K 1 3200 1 1 6 2 1600 2 3 12 3 1067 2 4 18 4 800 3 6 24 5 640 4 7 30 6 533 5 9 35 7 457 5 10 41 8 400 6 12 47 9 356 7 13 53 10 320 8 15 59 Table 11. Using 8-5-16 with Anderson Injector System. LB -------> 25 LB TANK----> 50 GAL PPM Supplied From 8-5-16 using P4 Pumphead 8 5 16 Dial Setting Injection Ratio 1:X N P K 1 3200 2 0 2 2 1600 3 1 5 3 1067 5 1 7 4 800 6 2 10 5 640 8 2 12 6 533 9 2 15 7 457 11 3 17 8 400 12 3 20 9 356 14 4 22 10 320 15 4 25 Table 12. Using a Bulk System with Individual Major Fertilizers. LB ------> 1 LB PPM Supplied From Each Fertilizer Gallons in Bulk Tank CaNO3 KNO3 K2SO4 NH4NO3 MgSO4 N Ca N K K N Mg 100 186 228 165 443 498 408 116 500 37 46 33 89 100 82 23 1000 19 23 17 44 50 41 12 2000 9 11 8 22 25 20 6 Note: KNO3 max is 1 LB/GAL; K2SO4 max is 13 OZ/GAL. Table 13. Using Compound 111 (Minors Blend) as Formulated by Frit Industries to Supply Micronutrients, with Bulk Tank. LB ------> 1.25 LB PPM OF EACH ELEMENT SUPPLIED GALLONS IN BULK TANK Fe Mn Zn Cu B Mo 100 100.1 50.1 82.5 50.1 20.1 0.26 500 20.0 10.0 16.5 10.0 4.0 0.05 1000 10.0 5.0 8.3 5.0 2.0 0.03 2000 5.0 2.5 4.1 2.5 1.0 0.01 i.e., FOR A 2000 TANK, USE 1 1/4 LB MINORS BLEND FOR 100% STRENGTH. Table 14. Using 15-10-30 with a Bulk Tank System. LB ---------> 1 LB PPM Supplied From 15-10-30 15 10 30 GALLONS IN BULK TANK N P K 100 180 52 299 500 36 10 60 1000 18 5 30