Wisconsin Alfalfa Yield and Persistence (WAYP) Program, 2016 Summary Report

Wisconsin Alfalfa Yield and Persistence (WAYP) Program
2016 Summary Report

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Program Objectives

  1. To verify the yield and quality of alfalfa harvested from production fields over the life of the stand beginning with the first production year (year after seeding).
  2. To quantify decreases in stand productivity of alfalfa fields as they age.

2016 Overview:

This summary has now reached a milestone with ten years of project data. Once again, UW-Extension agents were asked to identify forage producers who would be willing to weigh and sample forage from a 2015-seeded field and continue to do so for the life of the stand. A total of 7 fields from 3 different farms were enrolled in the program in 2016. 19 fields continued from previous years. The current summary includes data for the first, second, and third production years from fields entered into the program in 2014 through 2016 (2013-2015 seedings). There are no fourth-year stands remaining in the project, though there have been several in previous years. As is always the case in these types of studies, there is some attrition of fields over time. This is either because the farmer decided to terminate the field because of declining productivity or critical yield or forage quality data for a cutting or multiple cuttings could not be obtained. This year there were 4 fields dropped from the project that participated in 2015. Production data was collected for 26 fields in 2016 with a total of 6,740 dry matter tons of forage harvested, weighed, and sampled from 1,529 acres. A summary of all project fields (current and past) is presented in Table 1.

2016 Weather

The growing season overall was above average in terms of temperature and precipitation in most areas of the state. Similar to previous years, this varied across the state and though the season. Many areas had normal temperatures with dry conditions in early spring, leading to quick greenup, rapid growth, and an early first cut. However, by early June, regular and sometimes flooding rains started and persisted through the summer. This made timely harvest and drydown challenging. First cutting again varied widely with some fields being harvested the week before Memorial Day at high quality and others being delayed two weeks or more. Despite the wet weather and flooding, the southern part of the state stayed extremely dry through much of the summer. Late summer and autumn saw above average temperature and rainfall. Many fields were not harvested after mid-late August because of wet field conditions or the producers did not need additional forage. These stands had better than normal fall growth and went into the fall looking good. New seedings had a tough year. Planting was generally timely, but cool and dry conditions in early May slowed growth and allowed disease to thin stands. Wet fields, especially those with previous tillage, had noticeable wheel traffic damage.

2015 Weather

The growing season overall was very close to normal in terms of temperature and precipitation for many areas. Some areas were cooler and drier in early summer, but this balanced out in late summer. September was the warmest on record for many places. Significant winterkill and heaving affected eastern and central areas of the state. The spring was mostly dry and warm, which resulted in timely planting and rapid alfalfa growth in May. First cutting varied widely with many fields being harvested the week before Memorial Day at high quality and others being delayed one to two weeks because of heavy rains that started on Memorial Day weekend. Some of these delayed fields caught up and still had four cuts while other only had three. Many stands had good fall growth and went into the fall looking good.

2014 Weather

For the second consecutive year the growing season began with cool, wet weather. Both planting and crop development were delayed. Alfalfa harvest finally began the end of May and continued through mid-June. Heavy rains fell at the beginning of June in much of the state. Wet conditions also delayed the second cutting, often causing forage quality to be lower than desired for feeding dairy cows. Growing degree units remained below normal for much of the summer, though fields eventually dried for a timely third and (in some cases) fourth cutting. Many of the northeast Wisconsin project fields had fourth cut harvested in mid-September. Overall, the growing season could be characterized as being cool and wet.

Table 1.  Field background information
Field # 1st Production
Year		 County Seeding Mo/Yr. Seeding Rate (lb/ac) Field Size (ac) Last Production
Year
107 2007 Outagamie 05/06 15 103.7 2009
207 2007 Outagamie 04/06 16 79.3 2009
307 2007 Outagamie 04/06 16 37.0 2010
407 2007 Outagamie 04/06 16 156.7 2009
507 2007 St. Croix 08/06 NA 51.0 2009
607 2007 Waupaca 04/06 15 24.1 2007
707 2007 Fond du Lac 04/06 17 15.7 2007
807 2007 Fond du Lac 04/06 17 39.7 2010
108 2008 Chippewa 04/07 15 18.8 2009
208 2008 Marathon 04/07 15 5.2 2011
308 2008 Winnebago 05/07 15 115 2011
408 2008 Winnebago 08/07 15 36.0 2011
508 2008 Winnebago 05/07 15 22.0 2011
608 2008 Outagamie 05/07 20 83.7 2011
708 2008 Outagamie 04/07 16 147.8 2011
808 2008 Outagamie 04/07 16 53.0 2011
908 2008 Outagamie 05/07 15 50.3 2011
1008 2008 Outagamie 08/07 15 194.8 2008
109 2009 St. Croix 08/08 NA 41 2011
209 2009 Winnebago 04/08 15 67 2012
309 2009 Winnebago 08/08 15 78 2011
409 2009 Brown 08/08 18 75 2011
509 2009 Chippewa 04/08 15 16.2 2009
609 2009 Calumet 04/08 12 15 2011
709 2009 Outagamie 05/08 20 74.8 2010
809 2009 Outagamie 05/08 20 63 2010
110 2010 Outagamie 05/09 16 48 2010
210 2010 Outagamie 05/09 16 110.2 2012
310 2010 Outagamie 05/09 16 61.7 2012
410 2010 Outagamie 05/09 16 111 2012
510 2010 Fond du Lac 04/09 17 50.3 2012
610 2010 Fond du Lac 04/09 17 19.3 2012
111 2011 Fond du Lac 04/10 17 10 2013
211 2011 Brown 04/10 17 35.7 2012
311 2011 Outagamie 05/10 20/+4 TF 75.8 2011
411 2011 Outagamie 05/10 20/+4 TF 72 2011
112 2012 St. Croix 08/11 16 73.9 2012
212 2012 Kewaunee 05/11 17 73.5 2014
312 2012 Outagamie 05/11 16 143.6 2014
412 2012 Outagamie 05/11 16 75 2014
512 2012 Outagamie 05/11 16 189 2014
612 2012 Outagamie 05/11 16 45.9 2014
712 2012 Outagamie 05/11 16 38.7 2013
812 2012 Dodge 05/11 16 59.6 2013
113 2013 Columbia 08/12 15 44.6 2015
213 2013 Outagamie 04/12 16 150.7 2014
313 2013 Outagamie 04/12 16 54 2014
413 2013 Outagamie 04/12 16 79.3 2014
513 2013 Brown 08/12 28 156 2013
114 2014 Fond du Lac 04/13 19 32.8 active
214 2014 Fond du Lac 07/13 17 35.7 active
314 2014 Fond du Lac 05/13 15 9.4 active
414 2014 Fond du Lac 05/13 18 20.3 active
514 2014 Kewaunee 05/13 21 32 active
614 2014 Door 05/13 18 60.8 active
Table 1.  Field background information (continued)
Field # 1st Production
Year		 County Seeding Mo/Yr. Seeding Rate (lb/ac) Field Size (ac) Last Production
Year
714 2014 Columbia 04/13 14 9.4 active
814 2014 Pierce 09/13 15 16.3 2015
914 2014 Marathon 07/13 12 14.2 2015
1014 2014 Marathon 06/13 15 32.5 active
1114 2014 Outagamie 05/13 16 104.3 2014
1214 2014 Outagamie 05/13 16 156.8 2014
1314 2014 Outagamie 06/13 16 69 2014
1414 2014 Outagamie 05/13 20/+3.5 TF 38.9 active
1514 2014 Outagamie 06/13 20/+3.5 TF 76.7 2015
115 2015 Manitowoc 06/14 16 19.3 active
215 2015 Door 07/14 18 52.0 active
315 2015 Outagamie 05/14 16 55.7 active
415 2015 Outagamie 05/14 16 110.2 active
515 2015 Outagamie 05/14 16 86.5 active
615 2015 Outagamie 05/14 16 45.8 active
715 2015 Outagamie 05/14 16 225.0 active
815 2015 Marathon 06/14 18 11.4 active
915 2015 Marathon 06/14 15 5.61 active
1015 2015 Columbia 04/14 15 15.9 active
116 2016 Marathon 04/15 12 20.0 active
216 2016 Outagamie 05/15 16 215.7 active
316 2016 Outagamie 05/15 16 108.6 active
416 2016 Outagamie 05/15 16 65.0 active
516 2016 Outagamie 05/15 16 78.2 active
616 2016 Outagamie 05/15 16 90.0 active
716 2016 Columbia 05/15 16 11.9 active

Data Collection

Project fields were identified and an accurate measure of field size was determined (if not previously known). Forage yield from an entire project field was weighed (usually this was done with an on-farm drive-over scale). Both empty and full weights for all trucks/wagons used were recorded. Beginning in 2008, two forage samples from each harvest were taken and submitted to the Marshfield Soil and Forage Analysis Laboratory (only one sample was submitted per harvest in 2007) for NIR analysis. Data from the two forage samples was averaged and recorded into a spreadsheet by the local coordinator. The data was then shared with the producer following each harvest. At the end of the season, all data was collected and summarized for this report.

Harvest Schedules

Mean cutting dates by year are presented in Table 2 and cutting dates for all project fields harvested in 2016 are presented in Table 3. The 2016 season was marked by near average harvest dates for first-cut (Table 2). This became progressively earlier though the season with fourth-cut being 10 days ahead of average and the second earliest after only 2012. Average first-cut date has ranged from May 16th in 2012 to June 10th in 2013. Regardless of first-cut date, the average fourth-cut date is generally within a week of September 1st, with the exception of a few extreme weather years and 2016. The large majority of fields in this study and in 2016 were cut four times. Across years and sites, 21 fields were cut three times, 151 fields were cut four times (generally prior to or soon after September 1st), and 22 fields were cut five times (generally four times before September 1st with a final cut in October).

First cut date had a 33 day range (May 18th to June 20th) (Table 3). Typically, first cut occurred over 19 days because of varying location and weather. This ranged from 13 in 2007 to 45 in 2015. Six of the fields were cut before or during Memorial Day weekend. The majority were cut the last week on May and six were cut in June. Throughout the season, cutting date was affected by frequent rain and wet soil. This also contributed to wide ranges in subsequent cuttings. For the second year in a row, Central Wisconsin was greatly impacted by wet weather. Without the Marathon county data, the cut window would have been 24 days and average cut dates would have been 3-4 days earlier. Four fields were cut 3 times this year and one was cut three times plus an October cut. One field was cut 5 times by September 1st. This was the 6th out of 22 times that a 5th cut occurred prior to October 1st. When fourth cut was the final cut, the date spanned from August 9th to September 1st.

Table 2.  Mean cutting dates by year
           
  1st Cut 2nd Cut 3rd Cut 4th Cut* 5th Cut
Year Date Date Date Date Date
2007 22-May 24-June 25-July 30-Aug 21-Oct
2008 3-Jun 3-Jul 3-Aug 29-Aug 29-Oct
2009 31-May 1-Jul 4-Aug 5-Sep
2010 22-May 28-Jun 2-Aug 29-Aug 12-Oct
2011 31-May 1-Jul 31-Jul 31-Aug
2012 16-May 14-Jun 14-Jul 10-Aug 21-Sep**
2013 10-Jun 11-Jul 6-Aug 7-Sep
2014 4-Jun 9-Jul 7-Aug 13-Sep
2015 3-Jun 2-Jul 3-Aug 27-Aug 12-Sep
2016 29-May 26-Jun 26-Jul 19-Aug 1-Sep
MEAN 29-May 29-Jun 30-Jul 29-Aug 1-Oct

*average excludes data where a 4th-cut was taken in October

** average includes 2 fields with 5th-cuts taken in late-August and 2 taken in early September
Table 3.  Summary of 2016 Cutting Dates
Field ID# County 1st Cut Date 2nd Cut
Date		 3rd Cut
Date		 4th Cut
Date		 5th Cut
Date
114 Fond du Lac 21-May 16-Jun 15-Jul 14-Aug
214 Fond du Lac 22-May 19-Jun 18-Jul 9-Aug
314 Fond du Lac 1-Jun 27-Jun 25-Jul 22-Aug
414 Fond du Lac 24-May 20-Jun 24-Jul 22-Aug
514 Kewaunee 11-Jun 25-Jul 24-Aug
614 Door 30-May 27-Jun 24-Jul 22-Aug
714 Columbia 19-May 17-Jun 18-Jul 14-Aug
1014 Marathon 20-Jun 25-Jul 22-Aug 1-Oct
1414 Outagamie 21-May 20-Jun 19-Jul 24-Aug
115 Manitowoc 19-May 17-Jun 13-Jul 3-Aug 1-Sep
215 Door 25-May 27-Jun 22-Jul 18-Aug
315 Outagamie 28-May 21-Jun 21-Jul 17-Aug
415 Outagamie 28-May 21-Jun 21-Jul 16-Aug
515 Outagamie 29-May 21-Jun 21-Jul 16-Aug
615 Outagamie 29-May 21-Jun 22-Jul 17-Aug
715 Outagamie 27-May 21-Jun 20-Jul 17-Aug
815 Marathon 18-Jun 19-Jul 26-Aug
915 Marathon 18-Jun 19-Jul 23-Aug
1015 Columbia 19-May 20-Jun 20-Jul 15-Aug
116 Marathon 7-Jun 8-Jul 14-Aug
216 Outagamie 28-May 21-Jun 22-Jul 1-Sep
316 Outagamie 28-May 22-Jun 22-Jul 29-Aug
416 Outagamie 27-May 23-Jun 22-Jul 30-Aug
516 Outagamie 27-May 23-Jun 22-Jul 31-Aug
616 Outagamie 27-May 23-Jun 22-Jul 17-Aug
716 Columbia 18-May 16-Jun 20-Jul 31-Aug
MEAN 29-May 26-Jun 26-Jul 21-Aug 1-Sep
EARLIEST 18-May 16-Jun 13-Jul 3-Aug 1-Sep
LATEST 20-Jun 25-Jul 26-Aug 1-Oct 1-Sep

Forage Dry Matter at Harvest

Alfalfa was harvested as haylage for all but 17 individual cuttings over the ten years. Harvest dry matter data from the dry hay harvests was not included in the forage dry matter data means. Although project participants are not asked about storage structure, there is good reason to believe most of the farms are storing this forage in bunkers, piles, or bags.

Throughout the duration of this project total season dry matter percentage of harvested forage has ranged from 40 to 50 percent (Figure 1), though individual cuttings and total-season field means sometimes exceeded 50 percent, especially later in the season. It’s been questioned if this is too dry for obtaining optimum storage porosity in a bunker or pile. The trend has been toward lower dry matter percentages in recent years. For 2016 the average dry matter across all cuttings was 44 percent; however this ranged from 36% to 50% with two fields at each end of the range. It’s unclear if this was purposeful or if it is simply attributable to environmental conditions. Seven fields finished the season with total-season dry matter means under 40 percent.

Forage Dray Matter Yield:

Average yield by cutting and for the season in each project year are presented in Figure 2. The highest average dry matter yield per acre of 5.0 tons was in 2007 and 2010. A record low total-season dry matter yield average was set in 2013 at 3.7 tons per acre.

In 2016 the average yield across all fields was 4.72 tons per acre, which was the third highest year and 0.28 greater than the ten-year average of 4.44 tons per acre. First-cut yield of 1.8 tons per acre was tied for highest, matching 2010 and 2015. This was likely because good spring growing conditions and delayed harvest in several fields. Second-cut yield was the highest since 2010 at 1.2 tons per acre. The third-cut average yield of 1.0 tons per acre was slightly above average. Fourth cut yield of 0.8 tons per acre was at the average. The fifth-cut yield of 0.8 tons per acre was the record for the program; however it is only from one field and the data set is limited. Detailed yield data for each field by year are presented in Appendix A. Once again there was extreme variation between fields in 2016 (Figure 3). Yields ranged from a high of 6.1 to a low of 3.4 tons per acre. One field exceeded 6.0 tons per acre which has been the benchmark for top yields in the study having now been reached 10 times over 10 years. The highest yielding field since the project’s inception was 6.55 tons per acre in 2012. In contrast, there were 9 fields that did not reach 3.0 tons per acre (Appendix A).

Alfalfa Persistence:

In-season: An analysis was done to determine the percent of total season yield for each cutting (Table 4). Data was summarized for 3-, 4-, and 5-cut systems for all project years. Five-cut fields were also included in the 4-cut summary with the final fall harvest not included in the total season yield. It’s significant to note the wide variation in percent yield for an individual cutting. In some cases this is the result of environmental conditions (e.g. drought) previous to the harvest while in other situations it’s simply a function of cutting date (Tables 2 and 3).

Between years: Persistence is influenced over time by the age of the stand, cutting schedule, and environment. For this project, persistence is being measured as a percent of 1st production year dry matter yield. Persistence data in Table 5 consists of 2006 through 2015-seeded fields and is averaged over all cutting schedules. Although ranges indicate a wide variation, average forage yield in the 2nd and 3rd production year have been comparable to the 1st production year. The yield for 4th-year stands drops to 78 percent of the 1st-production year. Time will tell if these trends continue, but to date it appears that keeping stands for at least three production years seems to be the prudent decision.

Forage Quality

Forage quality, although extremely important, is not the primary focus of this project. However, it is impossible to evaluate changes in management to maximize yield and persistence without considering the impact on forage quality. Harvested forage quality in 2016 again showed consistency from cutting to cutting like it did in 2015, but had not in previous years. (Figure 8). Unfortunately, quality was generally lower than in previous years. Total season mean RFQ was 160. This is dairy quality forage, but one of the lower numbers seen in the study. The range was from 127 to 202. The best RFQ was seen in 4th and 2nd cuts. The overall reduction in quality was likely caused by weather issues. Frequent rain and wet fields delayed cutting and harvest. Several fields had up to four day delays between cut and harvest. A bright spot was NDFD. 1st crop was on the lower end, but 2nd, 3rd, and 5th cut were the best seen in the study. The overall season NDFD of 48.7% ranked second behind 50.4% in 2007. (Figure 6)

Other notable forage quality results from 2016 included:

  • The lowest mean crude protein percent (20.2%) obtained in the ten-year study. Every cut was either the lowest or second lowest seen. The previous low was 20.4% in 2010 (Figure 4). This was the third year in a row with low crude protein.
  • Highest average NDF percent for first, fourth, fifth cut and the total season mean (40.9%). Other cuts were in the top three or four (Figure 5). The previous high was 40.7% in 2015. This was the fourth year in a row with high NDF.
  • Overall, NDFD percent was fairly consistent across cuts and at a high level (Figure 7). There was a drop at third cutting, but not as much as most previous years. A similar consistency was observed in 2015.
  • Mean Milk/Ton for the first cut was the second worst seen in 10 years (Figure 9). However, the other cuts were above average. The season total of 2,899 lbs/tn was the second best seen after 2007, which was 2,973 lbs/tn.
  • Crude protein, NDF, and RFQ could be tracked over time because first cut was extended each of the past two years. A regression shows the CP dropped 0.22 – 0.24% per day, NDF increased 0.54 – 0.57% per day and RFQ decreased 2.9 – 3.1 points per day as harvest was delayed in 2015 and 2016 (Figures 10-12). These numbers are similar to the expected change of -0.25%/day for CP, slightly more than +0.41%/day expected for NDF and slightly less than -4 to -5/day expected for RFQ.

Summary:

The Wisconsin Alfalfa Yield and Persistence Program is designed to provide forage growers and agricultural professionals a unique look at what is happening at the farm level. As more fields are entered and years pass, the reliability of information continues to increase. Environmental conditions have had a profound influence on both yield and quality with no two years being exactly alike.

Acknowledgements:

First and foremost, UW-Extension Team Forage wishes to thank the producers who took the extra time and effort to obtain weights and forage samples for the project fields at each cutting.

Past and Present UW coordinators for this project:

Mike Bertram, Columbia County Mark Hagedorn, Brown County Loretta Ortiz-Ribbing, FdL County
Aerica Bjurstrom, Kewaunee County Kevin Jarek, Outagamie County Mike Rankin, Fond du Lac County
Greg Blonde, Waupaca County Tina Kohlman, Fond du Lac County Nick Schneider, Winnebago County
Jason Cavadini, Marathon County David Laatsch, Dodge County Ryan Sterry, St. Croix County
Jerry Clark, Chippewa County Bryce Larson, Calumet County Amy Vandebrake, Pierce County
Scott Gunderson, Manitowoc County

Funding for this project has been provided by UW Extension Team Forage and the Midwest Forage Association (MFA).

This report was written and data compiled by Mike Bertram, Superintendent, UW Arlington Agricultural Research Station and Jason Cavadini, Asst. Superintendent, UW Marshfield Agricultural Research Station. Questions may be directed to: mbertram@wisc.edu or jason.cavadini@wisc.edu Reports from 2007-2014 were written by Mike Rankin, Emeritus Crops and Soils Agent, Fond du Lac Co.

Appendix

Appendix A.  Dry matter yield by field, harvest year, cutting, and total season.
Field ID#

Harvest

Year

1st Cut

DM Yield

2nd Cut

DM Yield

3rd Cut

DM Yield

4th Cut

DM Yield

5th Cut

DM Yield

Season

DM Yield
107 2007 1.57 1.53 0.95 0.59 0.34 4.98
207 2007 1.52 1.33 1.00 0.70 0.73 5.27
307 2007 1.54 1.51 1.30 0.90 0.88 6.12
407 2007 1.41 1.57 1.11 0.80 0.71 5.59
507 2007 1.00 1.02 0.37 2.39
607 2007 1.79 1.77 1.20 1.14 5.90
707 2007 1.75 1.23 0.81 0.63 4.41
807 2007 1.79 1.19 1.42 1.10 5.51
Mean 2007 1.55 1.39 1.02 0.84 0.67 5.02
Low 2007 1.00 1.02 0.37 0.59 0.34 2.39
High 2007 1.79 1.77 1.42 1.14 0.88 6.12
107 2008 1.28 1.11 1.07 0.43 3.89
207 2008 1.34 1.08 1.14 0.68 4.23
307 2008  NA 0.86 0.91 0.78 —
407 2008 NA 1.14 1.09 0.68 —
507 2008 1.95 1.08 0.76 3.79
807 2008 2.23 1.73 1.31 0.82 6.08
108 2008 1.38 0.74 1.15 3.27
208 2008 2.08 1.54 0.84 4.46
308 2008 1.46 0.83 1.27 0.93 0.45 4.95
408 2008 0.86 0.49 0.85 0.50 2.70
508 2008 2.01 0.72 1.20 0.98 0.37 5.29
608 2008 1.39 1.78 1.54 0.92 5.63
708 2008 1.28 1.05 1.18 0.89 4.40
808 2008 1.81 1.20 1.27 0.79 5.07
908 2008 0.73 0.94 0.89 1.12 3.68
1008 2008  NA 1.06 0.97 0.83 —
Mean 2008 1.52 1.08 1.09 0.80 0.41 4.42
Low 2008 0.73 0.49 0.76 0.43 0.37 2.70
High 2008 2.23 1.78 1.54 1.12 0.45 6.08
107 2009 0.95 1.06 0.30 0.99 3.31
207 2009 1.28 1.23 0.53 1.00 4.04
307 2009 1.02 1.23 0.69 0.93 3.87
407 2009 1.59 1.02 0.53 0.85 3.99
507 2009 1.38 0.90 0.49 0.76 3.53
807 2009 1.56 0.99 0.98 0.62 4.15
108 2009 1.52 0.83 0.80 3.15
208 2009 1.77 1.18 1.33 4.28
308 2009 1.24 0.94 0.56 1.15 3.89
408 2009 1.80 0.80 0.20 0.64 3.43
508 2009 1.74 1.00 0.59 0.98 4.32
608 2009 2.19 1.23 0.88 0.78 5.07
708 2009 1.40 1.34 0.63 0.98 4.35
808 2009 2.07 1.16 0.59 0.55 4.37
908 2009 1.88 0.99 0.30 0.95 4.13
109 2009 0.57 0.55 1.09 2.21
209 2009 1.92 1.60 0.69 1.06 5.27
309 2009 1.14 0.84 0.43 1.05 3.46
409 2009 1.45 1.24 0.35 0.32 3.37
509 2009 2.05 0.88 0.57 3.49
609 2009 2.36 0.58 0.20 0.95 4.10
Field ID#

Harvest

Year

1st Cut

DM Yield

2nd Cut

DM Yield

3rd Cut

DM Yield

4th Cut

DM Yield

5th Cut

DM Yield

Season

DM Yield
709 2009 2.27 1.25 0.82 0.92 5.26
809 2009 2.08 1.03 0.85 0.72 4.68
Mean 2009 1.62 1.04 0.63 0.85   3.99
Low 2009 0.57 0.55 0.20 0.32   2.21
High 2009 2.36 1.60 1.33 1.15   5.27
307 2010 1.16 1.24 1.24 0.52 4.17
807 2010 1.38 1.32 1.22 0.81 4.74
208 2010 1.99 1.65 1.26 0.62 5.52
308 2010 1.65 1.66 0.85 0.41 4.57
408 2010 1.85 1.46 0.76 0.51 4.58
508 2010 1.88 1.81 0.69 0.48 4.86
608 2010 2.09 1.79 1.46 0.82 6.16
708 2010 1.45 1.33 1.39 0.67 4.84
808 2010 1.66 1.77 1.57 0.90 5.91
908 2010 1.83 0.84 1.27 0.51 4.45
109 2010 1.57 1.42 0.90 1.33 5.23
209 2010 1.91 1.80 1.09 0.91 5.71
309 2010 2.16 1.85 0.91 0.70 5.61
409 2010 1.43 0.96 0.55 0.39 3.33
609 2010 2.34 1.78 1.05 1.00 6.17
709 2010 2.32 0.94 1.08 0.57 4.90
809 2010 1.86 1.67 1.07 0.47 5.07
110 2010 1.46 1.65 1.40 0.54 5.05
210 2010 2.07 1.76 0.94 0.51 5.28
310 2010 1.59 1.21 0.97 0.57 4.33
410 2010 2.00 1.26 0.94 0.41 4.61
510 2010 1.87 1.69 1.05 0.62 0.39 5.62
610 2010 2.08 1.40 1.09 0.46 0.34 5.37
Mean 2010 1.81 1.49 1.08 0.64 0.37 5.05
Low 2010 1.16 0.84 0.55 0.39 0.34 3.33
High 2010 2.34 1.85 1.57 1.33 0.39 6.17
             
208 2011 0.78 0.90 1.05 0.45 3.18
308 2011 1.31 1.12 0.85 0.79 4.06
408 2011 1.19 0.72 0.67 0.51 3.09
508 2011 1.25 0.85 0.65 0.69 3.44
608 2011 1.10 0.83 1.16 0.45 3.54
708 2011 1.50 0.75 1.37 0.78 4.41
808 2011 1.07 0.65 1.15 0.90 3.77
908 2011 0.92 0.52 0.87 0.49 2.80
109 2011 1.29 0.97 1.03 0.76 4.05
209 2011 1.59 1.02 0.92 0.92 4.45
309 2011 1.53 1.15 1.14 0.95 4.77
409 2011 1.27 0.81 0.47 0.48 3.03
609 2011 1.76 0.90 1.68 0.78 5.12
210 2011 1.13 0.72 1.04 0.80 3.69
310 2011 1.25 0.63 0.97 0.78 3.63
410 2011 1.33 0.60 1.08 0.57 3.58
510 2011 1.47 1.08 1.07 0.73 4.35
610 2011 1.41 0.92 0.88 0.83 4.04
111 2011 2.45 1.29 1.32 1.19 6.26
211 2011 1.39 0.85 1.20 1.10 4.55
311 2011 2.30 0.94 1.66 1.00 5.90
411 2011 1.70 NA 1.68 0.64 NA
               
               
Field ID#

Harvest

Year

1st Cut

DM Yield

2nd Cut

DM Yield

3rd Cut

DM Yield

4th Cut

DM Yield

5th Cut

DM Yield

Season

DM Yield
Mean 2011 1.41 0.87 1.09 0.75   4.08
Low 2011 0.78 0.52 0.47 0.45   2.80
High 2011 2.45 1.29 1.68 1.19   6.26
             
209 2012 1.47 1.01 0.97 0.40 3.85
210 2012 1.46 0.75 0.43 0.80 0.76 4.20
310 2012 1.22 0.67 0.45 0.69 0.45 3.48
410 2012 1.14 0.62 0.38 0.66 0.56 3.36
510 2012 1.20 1.13 0.74 0.63 0.73 4.44
610 2012 2.33 1.18 1.12 0.66 5.30
111 2012 2.03 1.79 1.55 1.18 6.55
211 2012 1.11 1.10 0.78 0.79 0.48 4.26
112 2012 1.46 0.85 1.11 0.85 0.63 4.90
212 2012 1.74 1.21 1.32 1.27 5.55
312 2012 1.65 0.78 0.59 0.70 0.68 4.40
412 2012 2.06 0.81 0.64 0.86 0.64 5.00
Mean 2012 1.46 1.01 0.82 0.78 0.58 4.51
Low 2012 0.84 0.62 0.38 0.40 0.34 3.36
High 2012 2.33 1.88 1.55 1.27 0.76 6.55
               
111 2013 1.70 0.85 0.87 0.94 4.35
212 2013 1.89 1.47 1.06 0.99 5.40
312 2013 1.20 1.02 0.65 0.48 3.35
412 2013 1.26 1.16 0.74 0.63 3.79
512 2013 1.30 1.11 0.80 0.65 3.87
612 2013 0.86 0.86 0.63 0.43 2.78
712 2013 0.83 1.03 0.65 0.44 2.95
812 2013 1.94 1.26 1.03 0.84 5.07
113 2013 2.27 1.80 1.19 5.26
213 2013 0.82 1.08 0.62 0.76 3.28
313 2013 0.82 0.83 0.51 0.60 2.76
413 2013 0.92 1.11 0.72 0.50 3.25
513 2013 0.47 0.40 0.44 0.30 1.62
Mean 2013 1.25 1.08 0.76 0.63   3.67
Low 2013 0.47 0.40 0.44 0.30   1.62
High 2013 2.27 1.80 1.19 0.99   5.40
             
212 2014 1.76 1.53 0.77 0.88 4.93
312 2014 1.69 0.97 0.70 0.80 4.16
412 2014 1.56 0.89 0.75 0.70 3.90
512 2014 1.48 0.59 0.76 0.65 3.48
612 2014 1.41 0.66 0.54 0.59 3.20
113 2014 1.80 1.70 1.24 1.03 5.79
213 2014 1.39 0.51 0.64 1.05 3.58
313 2014 1.09 0.53 0.66 0.84 3.13
413 2014 1.87 0.68 0.67 0.90 4.12
114 2014 1.93 1.88 1.24 1.25 6.28
214 2014 1.49 1.77 1.36 0.88 5.50
314 2014 1.88 1.14 1.02 0.73 4.77
414 2014 1.74 1.99 1.19 1.09 6.02
514 2014 1.77 0.89 0.55 0.75 3.95
614 2014 2.13 0.88 0.35 0.73 4.09
714 2014 2.96 1.24 1.02 0.91 6.12
814 2014 1.42 1.22 0.42 0.70 3.75
914 2014 1.18 1.20 0.93 3.31
1014 2014 2.04 1.58 1.20 4.82
1114 2014 1.42 0.73 0.76 0.74 3.65
Field ID#

Harvest

Year

1st Cut

DM Yield

2nd Cut

DM Yield

3rd Cut

DM Yield

4th Cut

DM Yield

5th Cut

DM Yield

Season

DM Yield
1214 2014 1.23 0.54 0.95 0.70 3.42
1314 2014 1.20 0.49 0.88 0.83 3.39
1414 2014 1.28 1.93 0.72 1.31 5.23
1514 2014 1.87 1.24 0.81 1.58 5.50
Mean 2014 1.65 1.12 0.84 0.89   4.42
Low 2014 1.09 0.49 0.35 0.59   3.13
High 2014 2.96 1.99 1.36 1.58   6.28
 
113 2015 1.59 1.50 1.61 0.85 5.55
114 2015 1.87 1.60 1.46 1.02 5.95
214 2015 1.25 0.88 0.88 0.72 0.66 4.40
314 2015 1.76 1.15 0.95 0.75 4.61
414 2015 1.67 1.60 1.24 0.64 5.14
514 2015 1.25 1.84 1.17 4.26
614 2015 2.89 1.21 0.86 0.70 5.67
714 2015 1.29 0.99 1.63 0.89 4.80
814 2015 1.30 0.77 0.95 0.35 3.37
914 2015 2.26 0.73 1.00 3.99
1014 2015 2.39 0.62 1.11 4.12
1414 2015 2.04 1.26 0.95 0.82 5.06
1514 2015 2.03 1.14 1.03 0.84 5.03
115 2015 1.16 1.30 0.87 0.77 4.10
215 2015 1.65 1.10 0.70 3.45
315 2015 1.53 0.76 1.19 1.07 4.55
415 2015 1.90 0.81 0.98 0.76 4.45
515 2015 1.98 0.91 1.02 0.76 4.66
615 2015 1.20 0.69 0.57 0.29 2.74
715 2015 1.51 0.83 0.95 0.63 3.92
815 2015 1.83 1.17 0.91 3.90
915 2015 2.33 1.05 1.91 5.28
1015 2015 1.81 1.36 1.49 0.95 5.60
Mean 2015 1.76 1.10 1.10 0.75 0.66 4.55
Low 2015 1.16 0.62 0.57 0.29 0.66 2.74
High 2015 2.89 1.84 1.91 1.07 0.66 5.95
114 2016 2.20 1.49 1.23 0.90 5.82
214 2016 1.74 1.12 0.76 0.45 4.06
314 2016 2.30 1.13 0.68 0.62 4.73
414 2016 1.97 1.47 1.12 0.80 5.35
514 2016 1.98 1.68 1.56 5.22
614 2016 2.22 1.12 1.28 1.07 5.70
714 2016 2.17 1.35 1.08 1.06 5.66
1014 2016 2.64 1.36 1.04 0.25 5.30
1414 2016 1.35 1.53 1.09 0.79 4.76
115 2016 1.57 1.40 1.00 0.67 0.80 5.44
215 2016 1.85 1.36 0.88 0.44 4.54
315 2016 1.61 0.88 0.79 0.42 3.70
415 2016 1.49 1.35 0.74 1.07 4.65
515 2016 2.37 0.88 0.83 1.03 5.10
615 2016 1.31 0.81 0.76 0.80 3.67
715 2016 1.28 1.09 1.10 0.84 4.31
815 2016 1.94 0.84 0.93 3.70
915 2016 2.54 1.17 1.21 4.93
1015 2016 1.92 1.40 1.31 1.07 5.70
116 2016 2.35 1.14 1.73 5.21
216 2016 1.24 0.94 0.86 0.89 3.94
316 2016 1.45 0.85 0.79 0.84 3.94
Field ID#

Harvest

Year

1st Cut

DM Yield

2nd Cut

DM Yield

3rd Cut

DM Yield

4th Cut

DM Yield

5th Cut

DM Yield

Season

DM Yield
416 2016 1.30 0.85 0.71 0.57 3.43
516 2016 1.65 0.82 0.88 0.86 4.21
616 2016 1.36 0.71 0.67 0.89 3.64
716 2016 2.15 1.30 1.26 1.36 6.07
Mean 2016 1.84 1.16 1.01 0.80 0.80 4.72
Low 2016 1.24 0.71 0.67 0.25 0.80 3.43
High 2016 2.64 1.68 1.73 1.36 0.80 6.07