Table ___.  Response of ______ as influenced by treatment, long-term fertility experiment #222, Stillwater, OK, 2004.

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     Treatment                                          NDVI

       N-P-K

       kg ha-1            Feekes 5                  Feekes 7                    Feekes 10

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1.    0-29-37           0.45                        0.51                           0.61                            

2.    45-29-37         0.49                        0.52                           0.62

3.    90-29-37         0.58                        0.53                           0.63

4.    135-29-37       0.57                        0.54                           0.64

10.  0-0-0               0.44                        0.51                           0.66

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N, P, and K applied preplant and incorporated as ammonium nitrate (34%N), triple super phosphate (20%P), and potassium chloride (49%K). 

NDVI – normalized difference vegeatative index.

Feekes 5 (leaf sheaths strongly erected)

Feekes 7 (second node of stem visible)

Feekes 10 (in boot)