WinterProductionCalculator021118.xls
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Sowing DateCold HouseCool HousePredictionPrediction
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09/01/1848
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Central Indiana winter harvest calculator09/08/1854
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The prediction models estimate days to maturity for a 40 day crop in an unheated cold house or cool house for Garcia's Gardens in Indianapolis, IN. The 40 day crop is defined as one that matures in 40 days at June 1st and September 1st at four season farm in Maine. Adjust accordingly for crops with different dtm. The models were created using the CorelPolyGUI add-on in OpenOffice.org. Sowing and harvest data was taken from Eliot Coleman's Winter Harvest Handbook, and the daylight tables were generated from http://aa.usno.navy.mil/data/docs/Dur_OneYear.php. Coordinates were determined using maps.google.com. The models should only be used for sowing dates Sept 1st through May 23rd. There are all sorts of variables to consider cloud cover, shading, etc. This is just a starting point. Have fun!Enter a sowing date between August 31st and May 24th All other dates will not work for this model.09/16/1868
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09/23/1881
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10/01/1891
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Cold House10/08/18101
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planting date
predicted harvest date
dtm
convert to model year
model result10/16/18105
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9/1/201810/17/20184609/01/1810/17/201810/23/18109
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11/01/18112
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11/08/18113
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Cool House11/16/18114
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planting date
predicted harvest date
dtm11/23/18116
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9/1/201810/12/20184109/01/1810/12/201812/01/18115
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12/08/18114
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12/16/18112
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12/23/18109
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01/01/19106
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01/08/19101
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01/16/1997
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01/23/1992
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02/01/1986
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02/08/1983
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02/16/1977
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02/23/1972
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03/01/1967
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03/08/1963
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03/16/1960
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03/23/1957
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04/01/1954
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04/08/1951
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04/16/1949
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04/23/1947
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05/01/1945
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05/08/1944
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05/17/1943
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05/23/1942
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9/1/201846
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9/1/201841
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09/01/1842
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09/08/1846
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09/16/1852
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09/23/1859
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10/01/1866
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10/08/1870
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10/16/1873
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10/23/1874
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11/01/1875
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11/08/1876
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11/16/1876
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11/23/1875
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12/01/1874
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12/08/1873
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12/16/1873
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12/23/1871
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01/01/1970
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01/08/1966
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01/16/1963
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01/23/1961
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02/01/1958
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02/08/1955
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02/16/1952
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02/23/1950
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03/01/1948
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03/08/1946
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03/16/1944
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03/23/1943
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04/01/1941
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04/08/1940
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04/16/1939
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04/23/1939
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05/01/1938
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05/08/1937
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05/16/1937
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05/23/1936
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