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 2000 9 3 15 Table 15. Using Phosphoric Acid or MAP with a Bulk Tank System to Supply Phosphorus. LB ----> 1 LB PPM Supplied From Each Fertilizer GALLONS IN BULK TANK Phosphoric Acid (75% P205) Monoammonium Phosphate (MAP) P N 100 393 320 144 500 79 64 29 1000 39 32 14 2000 20 16 7 i.e., FOR A 2000 TANK, USE 3 LB MAP TO GET 48 PPM P (100% STRENGTH). Table 16. Using a Hardie Injector System with Individual Major Fertilizers. PPM Supplied From Each Fertilizer TANK ----> 50 GAL CaNO3 KNO3 K2SO4 NH4NO MgSO4 LB/TANK ------------------> 50 50 0.83 50 50 Dial Setting Injection Ratio 1:X N Ca N K K N Mg 10% 631 29 36 26 85 64 65 18 20% 327 57 70 50 163 124 125 36 30% 239 78 95 69 223 169 171 49 40% 192 97 119 86 278 211 213 61 50% 152 122 150 109 351 266 268 77 60% 134 139 170 123 399 302 304 87 70% 124 150 184 133 431 326 329 94 80% 113 165 202 146 473 358 361 103 90% 103 181 221 160 518 393 396 113 100% 100 186 228 165 534 405 408 116 Note: KNO3 max is 1 LB/GAL; K2SO4 max is 13 OZ/GAL. Table 17. Using a Hardie Injector System with Phosphoric Acid or MAP to Supply Phosphorus. PPM Supplied Monoammonium Phosphate (MAP) Phosphoric Acid 75% P205 LB/GAL --------------> 0.25 0.25 Dial Setting Injection Ratio 1:X P N P 10% 357 22 10 28 20% 312 26 12 32 30% 250 32 14 39 40% 208 38 17 47 50% 156 51 23 63 60% 109 73 33 90 70% 104 77 35 95 80% 89 90 40 110 90% 83 96 43 118 100% 78 103 46 126 Table 18. Using a Hardie Injector System with Compound 111 as Formulated by Frit Industries to Supply Micronutrients. LB -------> 10 LB TANK ---> 50 GAL PPM OF EACH ELEMENT SUPPLIED Dial Setting Injection Ratio 1:X Fe Mn Zn Cu B Mo 10% 357 4.5 2.2 3.7 2.2 0.9 0.011 20% 312 5.1 2.6 4.2 2.6 1.0 0.013 30% 250 6.4 3.2 5.3 3.2 1.3 0.016 40% 208 7.7 3.9 6.3 3.9 1.5 0.020 50% 156 10.3 5.1 8.5 5.1 2.1 0.026 60% 109 14.7 7.4 12.1 7.4 3.0 0.037 70% 104 15.4 7.7 12.7 7.7 3.1 0.039 80% 89 18.0 9.0 14.8 9.0 3.6 0.046 90% 83 19.3 9.7 15.9 9.7 3.9 0.049 100% 78 20.5 10.3 16.9 10.3 4.1 0.052 Table 19. Using a Hardie Injector System with 15-10-30. LB ------> 50 LB PPM Supplied From 15-10-30 TANK ---> 50 GAL Dial Setting Injection Ration 1:X 15 10 30 N P K 10% 981 18 5 30 20% 442 41 12 68 30% 294 61 18 102 40% 260 69 20 115 50% 177 102 30 169 60% 147 122 36 203 70% 130 138 40 230 80% 115 157 46 260 90% 108 167 49 277 100% 97 186 54 308

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