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<br />000527 <br /> <br />Demonstration of Best Management Practices (BMPs) <br />to Improve Crop Yields, Returns and Water Quality in the <br />Arkansas River Valley of Colorado <br />Phase II <br /> <br />Progress Report <br />November, 1999 <br /> <br />Of the four observation wells located near the Holly Drain Ditch east of Holly, one sluffed and <br />filled in the well and will have to be cleaned or replaced for the 2000 season, Water level <br />measurements were started in February, 1999 and are shown in the enclosed charts # I, 2, 3 and <br />4, The water table in the Schenck Well dropped substantially as the ditch was cleaned during the <br />week of 6/1-6/15 even with the Arkansas running at above normal levels, Then the table rose for <br />a short time during the last week in July and has had a slight decline since then unti!11/2/99, The <br />Frey Well showed a decline during June through the last week in July but since then has shown a <br />rise and, as of 11/29/99, is higher that it was in 2/23/99, The Wagner Well has been variable <br />throughout the season rising and lowering with river and irrigation events, The remaining three <br />observation well will be monitored weekly or as possible through the remainder of 1999 and in <br />2000 with measurements to be taken from the Mapes Well when conditions allow, <br /> <br />Cory Thompson completed harvest of his corn PAM demonstration October 12, Yields were <br />taken from areas as follows: Untreated - PAM treated - PAM treated - Untreated, Each of the <br />areas were approximately 3,75 acres in size and similar areas were harvested in each of the four <br />areas, The Untreated areas averaged 185 bushels per acre with a harvest moisture of 18,3% <br />compared to the PAM treated areas that averaged 190 bushels per acre with a harvest moisture of <br />17,9%, (See attached Cultural Practices) These results indicate that the com in the PAM treated <br />area maintained a higher level ofsoi! moisture during critical periods of water use, reducing stress <br />and accelerating maturity, which produced the higher yields at lower harvest moisture <br /> <br />At the November Board meeting of the Northeast Prowers SCD, the Board indicated a desire to <br />help sponsor an Irrigation Management Workshop in conjunction with the District's annual <br />meeting, The Workshop would be held sometime during the last week of February/first of March, <br />The CWCB demonstration work would be reported and other subjects would include new crops, <br />salinity studies in the Otero County area, range management, weather station information, drip <br />irrigation and dryland/limited irrigation crop production, Potential speakers would include: Jim <br />Valliant-CSU, Tim Gates-CSU, Luis Garcia-CSU, Harold Duke-USDNARS, Tim Steffens-CSU, <br />Duane Johnson-CSU, Kevin Larson-CSU, Mike Bartolo-CSU, Howard Schwartz-CSU and <br />person on ColoradolKansas case or some other area of water interest. (Minutes of the November <br />10 Board meeting are included) <br /> <br />News letters will be sent out in January asking for persons interested in the cost/share subsurface <br />drainage funding, The NRCS has a list of interested persons from EQUIP programs in 1998/1999 <br />and new names may be added to this list. Target date for the installation of the subsurfuce <br />drainage systems has been tentatively set as May 31, <br /> <br />CWCBHPRI1.99 <br />