Monday, May 13, 2013

GenNext Complete A&B 4th application

We have made our 4th and final trial application of the GenNext Complete A&B to the two acres of putting greens this past Thursday April 9th.  We are currently at 1.05# N/m applied to the "GenNext sprayed" greens and to the "non GenNext" greens that were given a liquid 7-0-0 ammonium sulfate.  At this point in time and in the past couple of weeks we have noticed any difference in color between the greens.  Growth has been the same also.  We had originally seen some differences with new growth in the silvery thread moss spots we have on some of our greens but looking at the areas today they all seem to be the same in and outside of the check plot areas.  On April 29th we had sent out a tissue sample to Tournament Turf Laboratories as part of our greens testing program.  We were not able to get a sample out prior to making the GenNext applications to the greens but we did compare two greens that had three applications made and two greens with the 7-0-0 ammonium sulfate applied.  Greens 2 and 6 had the GenNext Complete A&B and greens 11 and 13 had the 7-0-0.  At the time of the tissue sampling .925# N/m had been applied to all of the greens.  Here are the results from the tissue samples.


Key Findings: Tissue Analysis Results/Greens:  2, 6, 11, & 13

MAJOR NUTRIENTS:

NITROGEN, N:                     SLIGHTLY LOW (2, 6, 11, 13)
PHOSPHORUS, P                 ADEQUATE (6, 13), SLIGHTLY LOW (2, 11)
POTASSIUM, K:                   SLIGHTLY LOW (6), LOW (2, 11, 13)

MACRONUTRIENTS:

CALCIUM, Ca:                      ADEQUATE (2, 11, 13), SLIGHTLY LOW (6)
MAGNESIUM, Mg:              ADEQUATE (2, 11, 14), SLIGHTLY LOW (6)
SULFUR, S                            ADEQUATE (2, 6, 11, 13)

MICRONUTRIENTS:

BORON, B:                            SLIGHTLY LOW (2, 11, 13), LOW (6)
COPPER, Cu:                         ADEQUATE (2, 6, 11, 13)
ZINC, Zn:                               ADEQUATE (2, 6, 11, 13)
MANGANESE, Mn:              ADEQUATE (2, 6, 11, 13)
IRON, Fe:                              ADEQUATE (2, 11, 13), SLIGHTLY LOW (6)

SODIUM, Na:                        ACCEPTABLE LOW LEVEL (2, 6, 11, 13)



Moss areas on 2 green

3 Green--Small box area is the check plot area

3 Green--Small box area is the check plot area

7 Green looking at the check plot area to the right of the picture

7 Green up-close on the check plot area from center of picture to the right, bentgrass looks the same in  and out of check plot area

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