table 1. influence of n-rate, k-rate and nitrification ... table 1. influence of n-rate, k-rate and...

51
147 Table 1. Influence of N-rate, K-rate and nitrification inhibitors on stover N content, total N removal and dry matter production on four corn hybrids at silking. Becker, MN 1989. Whole Plant N-Rate Hvbrid Inh. K-Rate Silking Stover t/A t/A T/A %N t/A 80 Pioneer 3615 - 3.68 1.42 104.5 80 NS 3.74 1.73 129.2 80 100 3.47 1.89 131.2 80 NS 100 3.66 1.43 104.1 80 200 3.50 1.79 125.6 80 NS 200 3.78 1.64 123.3 160 200 3.45 1.67 114.2 160 NS 200 3.85 1.55 118.5 240 3.65 1.95 142.4 240 NS 3.38 1.90 128.9 240 100 3.62 1.94 140.5 240 NS 100 4.02 2.06 165.8 240 200 3.34 1.98 132.4 240 NS 200 3.58 1.85 132.7 80 Pioneer 3737 3.74 1.94 143.1 80 NS 3.81 1.75 132.5 80 100 3.68 1.75 129.0 80 NS 100 3.41 1.70 115.3 80 200 3.84 1.57 120.1 80 NS 200 3.65 1.40 101.6 160 200 3.79 2.10 159.4 160 NS 200 4.07 2.11 173.1 240 3.57 2.09 148.2 240 NS 3.80 2.12 159.6 240 100 4.09 1.95 159.3 240 NS 100 3.48 2.17 150.9 240 200 3.31 2.16 140.7 240 NS 200 3.88 1.89 144.9 80 LH74 X LH85 3.46 1.65 112.9 80 NS 3.60 1.55 110.7 80 100 3.65 1.64 117.1 80 NS 100 3.68 1.68 122.5 80 200 3.81 1.64 125.1 80 NS 200 3.37 1.64 110.4 160 200 3.72 1.78 130.8 160 NS 200 3.77 1.71 128.9 240 4.02 2.16 172.0 240 NS 3.86 1.93 149.0 240 100 3.91 2.14 166.5 240 NS 100 3.64 1.86 133.7 240 200 3.92 2.07 162.0 240 NS 200 3.90 1.93 150.6 80 DeKalb 485 3.68 1.76 129.3 80 NS 3.77 1.76 132.2 80 100 3.89 1.72 133.6 80 NS 100 3.97 1.97 156.2 80 200 3.64 1.75 127.5 80 NS 200 3.87 1.72 133.3 160 200 4.05 1.71 138.6 160 NS 200 3.45 1.87 128.8 240 3.83 1.86 142.1 240 NS 4.01 1.65 132.1 240 100 3.60 2.04 146.5 240 NS 100 3.75 1.94 145.5 240 200 3.98 1.82 145.1 240 NS 200 3.44 1.98 135.6

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  • 147

    Table 1. Influence of N-rate, K-rate and nitrification inhibitors onstover N content, total N removal and dry matter productionon four corn hybrids at silking. Becker, MN 1989.

    Whole Plant

    N-Rate Hvbrid Inh. K-Rate Silking Stover

    t/A t/A T/A % N t/A

    80 Pioneer 3615 - 3.68 1.42 104.5

    80 NS 3.74 1.73 129.2

    80 100 3.47 1.89 131.2

    80 NS 100 3.66 1.43 104.1

    80 200 3.50 1.79 125.6

    80 NS 200 3.78 1.64 123.3

    160 200 3.45 1.67 114.2

    160 NS 200 3.85 1.55 118.5

    240 3.65 1.95 142.4

    240 NS 3.38 1.90 128.9

    240 100 3.62 1.94 140.5

    240 NS 100 4.02 2.06 165.8

    240 200 3.34 1.98 132.4

    240 NS 200 3.58 1.85 132.7

    80 Pioneer 3737 3.74 1.94 143.1

    80 NS 3.81 1.75 132.5

    80 100 3.68 1.75 129.0

    80 NS 100 3.41 1.70 115.3

    80 200 3.84 1.57 120.1

    80 NS 200 3.65 1.40 101.6

    160 200 3.79 2.10 159.4

    160 NS 200 4.07 2.11 173.1

    240 3.57 2.09 148.2

    240 NS 3.80 2.12 159.6

    240 100 4.09 1.95 159.3

    240 NS 100 3.48 2.17 150.9

    240 200 3.31 2.16 140.7

    240 NS 200 3.88 1.89 144.9

    80 LH74 X LH85 3.46 1.65 112.9

    80 NS 3.60 1.55 110.7

    80 100 3.65 1.64 117.1

    80 NS 100 3.68 1.68 122.5

    80 200 3.81 1.64 125.1

    80 NS 200 3.37 1.64 110.4

    160 200 3.72 1.78 130.8

    160 NS 200 3.77 1.71 128.9

    240 4.02 2.16 172.0

    240 NS 3.86 1.93 149.0

    240 100 3.91 2.14 166.5

    240 NS 100 3.64 1.86 133.7

    240 200 3.92 2.07 162.0

    240 NS 200 3.90 1.93 150.6

    80 DeKalb 485 3.68 1.76 129.3

    80 NS 3.77 1.76 132.2

    80 100 3.89 1.72 133.6

    80 NS 100 3.97 1.97 156.280 200 3.64 1.75 127.580 NS 200 3.87 1.72 133.3

    160 200 4.05 1.71 138.6160 NS 200 3.45 1.87 128.8240 3.83 1.86 142.1240 NS 4.01 1.65 132.1240 100 3.60 2.04 146.5240 NS 100 3.75 1.94 145.5240 200 3.98 1.82 145.1240 NS 200 3.44 1.98 135.6

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  • 151

    Table 5. Influence of N-rate, K-rate and nitrification inhibitors on N content and total Nremoval on four corn hybrids at dent stage R5. Becker, MN 1989.

    N-iConcentration N--Removal

    N-Rate Hvbrid Inh. K-Rate Stover Grain Cob Stover Grain Cob Total

    t/A

    80 Pioneer 3615

    t/A

    1.13 1.30 0.78 84.1 69.4 10.5 164.0

    80 NS 1.06 1.40 0.76 88.2 79.9 13.4 181.5

    80 100 0.94 1.32 0.87 69.4 61.8 10.9 142.1

    80 NS 100 1.02 1.40 0.75 82.9 71.0 10.3 164.3

    80 200 0.94 1.31 0.75 74.7 61.1 9.4 145.2

    80 NS 200 1.16 1.32 0.80 89.1 71.5 10.3 170.8

    160 200 0.97 1.46 0.82 86.0 83.8 13.1 182.9

    160 NS 200 1.52 1.52 0.82 131.0 84.6 12.8 228.5

    240 1.06 1.43 0.72 84.1 87.0 11.2 182.3

    240 NS 1.39 1.50 0.70 108.8 81.4 10.5 200.7

    240 100 1.15 1.54 0.83 100.9 89.8 13.5 204.3

    240 NS 100 1.33 1.44 0.86 114.6 80.6 13.9 209.1

    240 200 1.34 1.54 0.75 113.7 86.4 11.6 211.8

    240 NS 200 1.28 1.48 0.82 112.6 84.6 13.4 210.6

    80 Pioneer 3737 1.15 1.32 0.55 89.3 88.4 6.5 184.3

    80 NS 1.14 1.37 0.54 91.0 102.9 7.3 201.3

    80 100 0.87 1.31 0.54 62.0 84.8 5.8 152.5

    80 NS 100 1.13 1.29 0.56 81.9 84.4 6.2 172.5

    80 200 1.20 1.33 0.54 86.8 85.6 5.1 177.5

    80 NS 200 1.21 1.21 0.56 95.4 92.4 6.1 193.9

    160 200 1.22 1.41 0.61 89.4 93.4 7.4 190.1

    160 NS 200 1.40 1.36 0.63 111.1 101.8 7.8 220.7

    240 1.38 1.38 0.65 113.2 98.2 7.9 219.3

    240 NS 1.49 1.44 0.62 127.9 106.6 8.0 242.5

    240 100 0.99 1.44 0.54 67.2 91.2 5.7 164.1

    240 NS 100 1.67 1.39 0.65 122.7 89.4 7.3 219.5

    240 200 1.34 1.48 0.60 106.0 103.8 7.6 217.4

    240 NS 200 1.15 1.37 0.59 86.5 98.9 7.1 192.5

    80 LH74 X LH85 1.03 1.42 0.64 83.6 95.6 8.6 187.7

    80 NS 1.20 1.41 0.61 96.8 94.9 9.2 200.8

    80 100 0.86 1.31 0.64 60.5 81.1 8.9 150.4

    80 NS 100 0.96 1.37 0.56 74.4 91.6 7.8 173.8

    80 200 1.04 1.33 0.66 83.4 85.2 9.7 178.3

    80 NS 200 0.86 1.30 0.66 60.0 85.0 9.1 154.2

    160 200 1.10 1.46 0.56 85.3 99.4 9.0 193.8

    160 NS 200 1.23 1.51 0.56 95.7 101.4 8.4 205.5

    240 1.08 1.39 0.64 88.3 92.3 10.5 191.0

    240 NS _ 0.95 1.52 0.62 75.3 103.3 9.1 187.6

    240 100 1.19 1.54 0.58 101.5 107.9 9.4 218.8

    240 NS 100 1.05 1.49 0.66 80.7 104.6 9.9 195.2

    240 200 1.33 1.48 0.57 107.2 100.2 8.1 215.5

    240 NS 200 1.37 1.49 0.69 106.0 105.3 10.1 221.4

    80 DeKalb 485 1.14 1.21 0.63 94.5 91.7 9.8 196.0

    80 NS 1.48 1.20 0.63 111.8 80.6 9.0 201.4

    80 _ 100 1.08 1.14 0.62 86.3 87.2 8.9 182.4

    80 NS 100 1.26 1.20 0.65 101.2 77.5 8.1 186.8

    80 200 0.93 1.06 0.51 66.0 64.4 6.0 136.4

    80 NS 200 1.41 1.20 0.62 112.5 85.5 8.4 206.4

    160 200 1.52 1.30 0.60 133.8 96.4 8.7 238.9

    160 NS 200 1.44 1.29 0.64 113.4 91.0 8.8 213.2

    240 - 1.24 1.34 0.61 105.3 105.2 9.3 219.8

    240 NS 1.22 1.33 0.64 105.9 100.2 9.2 215.3

    240 _ 100 1.11 1.30 0.62 81.0 87.2 8.1 176.3

    240 NS 100 1.50 1.33 0.58 122.9 93.5 8.1 224.5

    240 200 1.44 1.36 0.57 114.8 96.1 8.2 219.0

    240 NS 200 1.27 1.32 0.65 104.1 97.4 9.9 211.4

  • 152

    Table 6. Influence of N-rate, K-rate and nitrification inhibitors on grain yields and dry matterproduction on four corn hybrids at physiological maturity. Becker, MN 1989.

    Grain Dry Mitter Production

    N-Rate Hvbrid Inh. K-Rate Yields Grain Stover Total

    t/A t/A Bu/A

    80 Pioneer 3615 _ 195.2 4.62 4.28 8.90

    80 NS 203.0 4.80 4.45 9.25

    80 - 100 177.7 4.21 4.27 8.47

    80 NS 100 187.2 4.43 4.29 8.71

    80 200 174.5 4.13 4.03 8.15

    80 NS 200 184.9 4.37 4.24 8.61

    160 200 202.1 4.78 4.23 9.01

    160 NS 200 204.3 4.83 4.48 9.31

    240 221.7 5.25 4.55 9.80

    240 NS 206.4 4.88 4.50 9.38

    240 100 208.8 4.94 4.47 9.41

    240 NS 100 212.1 5.02 4.66 9.68

    240 ___ 200 205.2 4.86 4.43 9.29

    240 NS 200 207.3 4.91 4.54 9.44

    80 Pioneer 3737 207.9 4.92 4.19 9.11

    80 NS 219.9 5.20 4.33 9.53

    80 100 199.1 4.71 3.57 8.28

    80 NS 100 200.7 4.75 3.91 8.66

    80 200 199.5 4.72 4.03 8.75

    80 NS 200 193.2 4.57 3.83 8.40

    160 200 206.2 4.88 3.89 8.77

    160 NS 200 216.2 5.12 3.94 9.05

    240 __- 214.0 5.06 4.17 9.23

    240 NS 205.4 4.86 3.87 8.73

    240 - 100 210.2 4.97 3.90 8.87

    240 NS 100 206.9 4.90 3.94 8.84

    240 200 214.1 5.07 3.93 8.99

    240 NS 200 203.1 4.81 4.00 8.80

    80 LH74 X LH85 195.3 4.62 4.30 8.92

    80 NS 197.7 4.68 4.20 8.87

    80 100 178.5 4.22 3.91 8.13

    80 NS 100 183.6 4.34 4.19 8.54

    80 200 194.4 4.60 4.16 8.76

    80 NS 200 178.3 4.22 3.93 8.15

    160 200 202.1 4.78 4.24 9.02

    160 NS 200 195.2 4.62 4.43 9.05

    240 197.2 4.67 4.34 9.01

    240 NS 195.0 4.61 4.25 8.86

    240 100 191.2 4.52 4.22 8.74

    240 NS 100 194.5 4.60 4.22 8.82

    240 200 199.8 4.73 4.52 9.25

    240 NS 200 207.2 4.90 4.31 9.22

    80 DeKalb 485 201.8 4.78 4.25 9.03

    80 NS 206.1 4.88 4.24 9.12

    80 100 203.4 4.81 4.21 9.02

    80 NS 100 205.2 4.85 4.11 8.97

    80 200 189.3 4.48 3.83 8.31

    80 NS 200 205.2 4.86 4.26 9.11

    160 200 226.8 5.37 4.33 9.70

    160 NS 200 215.5 5.10 4.38 9.48

    240 223.3 5.28 4.44 9.72

    240 NS 226.7 5.36 4.70 10.06

    240 100 220.4 5.22 4.29 9.50

    240 NS 100 222.1 5.25 4.20 9.45

    240 200 212.4 5.03 4.15 9.18

    240 NS 200 219.0 5.18 4.35 9.53

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  • 165

    Table 19. Influence of N-rate, K-rate and nitrification on N content, and total N removal onfour corn hybrids at the dent stage R5. Waseca 1989.

    N-Concentration N-Removal

    N-Rate Hybrid Inh. K-Rate Stover Grain Cob Stover Grain Cob Total

    t/A

    0 Pioneer 3615

    t/A %

    1.290.77 0.58 54.6 82.8 7.6 144.9

    0 100 0.72 1.26 0.63 48.1 62.2 6.9 117.2

    80 1.01 1.49 0.54 78.6 110.3 8.1 196.9

    80 NS 0.94 1.46 0.60 68.0 103.6 9.4 181.0

    80 100 0.84 1.40 0.56 64.8 93.6 8.1 166.5

    80 NS 100 0.92 1.47 0.60 66.6 93.8 8.4 168.9

    160 0.97 1.46 0.58 61.7 95.9 7.5 165.1

    160 NS 1.03 1.54 0.56 72.1 107.6 8.4 188.1

    160 100 0.96 1.53 0.57 68.6 99.8 8.5 176.9

    160 NS 100 0.87 1.54 0.62 65.7 100.8 8.8 175.3

    0 Pioneer 3475 0.63 1.14 0.58 43.5 59.8 6.2 109.5

    0 100 0.58 1.18 0.56 44.2 55.4 5.9 105.5

    80 1.00 1.42 0.61 80.2 102.0 9.2 191.4

    80 NS 0.87 1.39 0.60 67.3 97.8 8.5 173.6

    80 100 1.01 1.37 0.70 81.5 82.5 8.3 172.3

    80 NS 100 0.89 1.46 0.64 66.7 87.0 7.9 161.6

    160 0.95 1.47 0.62 77.5 100.7 8.7 186.9

    160 NS 0.92 1.41 0.61 60.4 92.9 8.0 161.3

    160 100 0.93 1.42 0.63 68.8 85.3 8.4 162.5

    160 NS 100 0.92 1.44 0.65 76.2 95.7 8.9 180.8

    0 LH74 X LH51 0.72 1.26 0.48 61.6 68.1 5.4 135.1

    0 100 0.55 1.10 0.52 53.0 53.8 5.5 112.2

    80 1.15 1.59 0.50 97.0 98.7 6.4 202.1

    80 NS 1.00 1.43 0.55 88.2 87.6 6.8 182.6

    80 100 0.91 1.44 0.53 78.0 80.6 6.5 165.1

    80 NS 100 1.03 1.41 0.52 90.6 79.7 6.4 176.7

    160 1.19 1.44 0.53 98.1 89.5 6.2 193.8

    160 NS 1.14 1.51 0.61 88.3 82.8 6.9 178.0

    160 100 1.01 1.53 0.57 88.5 82.4 6.9 177.8

    160 NS 100 1.13 1.51 0.53 116.4 93.5 7.2 217.1

    0 LH74 X LH82 0.63 1.18 0.58 38.1 59.6 6.3 104.0

    0 100 0.54 1.16 0.64 36.7 55.2 6.4 98.3

    80 0.90 1.45 0.59 57.0 93.6 7.2 157.8

    80 NS 0.96 1.54 0.53 66.1 107.6 6.9 180.6

    80 100 0.94 1.40 0.61 74.0 91.2 8.0 173.3

    80 NS 100 1.00 1.41 0.50 72.1 90.8 6.5 169.4

    160 0.97 1.55 0.65 67.8 103.6 8.4 179.9

    160 NS 0.96 1.49 0.51 64.1 101.0 6.6 171.7

    160 100 1.07 1.50 0.59 84.6 102.6 8.1 195.3

    160 NS 100 1.04 1.43 0.66 75.4 96.5 9.1 181.0

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