2004 Trials – List

CHC33 | LH198 LH227 LH244 | Four-Tester Summary | HC33C2 | LH227C2 | Two-Tester C2 Summary

NEWINB 2004 | GEM198 | GEM244 | GEMADV | Two-Tester GEM Summary | GEMNEW

HC33

In 2004, HC33 topcrosses were evaluated at two locations, Madison and Arlington. The 96 entries consisted of 92 WQS C0 and C1 S4+ families crossed to HC33 and four hybrid checks. There were three replications at each location. The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 30,900 plants/acre at Madison, and 31,800 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 22. The Arlington trial was harvested on October 13, which was after the first frost. Based on forage yield, 20 new HC33 topcrosses were chosen for nutritional evaluation (HC33 – Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (HC33 – Forage quality evaluation). Ninety families that appeared in HC33 also appeared in trials LH198, LH227, and LH244. For a summary of performance over all four testers see Four- tester CO and C1 summary.

Four-tester C0 and C1 Summary

Ninety WQS families were testcrossed to each of HC33, LH198, LH227, and LH244. The experimental topcrosses involved S5+ families derived from WQS C0 and C1. The performance of these families when testcrossed to individual testers are presented in trials HC33, LH198, LH227, or LH244, respectively. The average forage yield over all four inbred testers is presented in Four-tester summary – Forage yield evaluation. Forage quality evaluation is presented in Four-tester summary – Forage quality evaluation.

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LH198

In 2004, LH198 topcrosses were evaluated at two locations, Madison and Arlington. The 107 entries consisted of 103 WQS C0 and C1 S4+ families crossed to LH198 and four hybrid checks. There were three replications at each location. The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 33,000 plants/acre at Madison, and 33,000 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 23. The Arlington trial was harvested on October 14, which was after the first frost. Based on forage yield, 30 new LH198 topcrosses were chosen for nutritional evaluation (LH198– Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (LH198– Forage quality evaluation).

Four-tester C0 and C1 Summary

Ninety WQS families were testcrossed to each of HC33, LH198, LH227, and LH244. The experimental topcrosses involved S5+ families derived from WQS C0 and C1. The performance of these families when testcrossed to individual testers are presented in trials HC33, LH198, LH227, or LH244, respectively. The average forage yield over all four inbred testers is presented in Four-tester summary – Forage yield evaluation. Forage quality evaluation is presented in Four-tester summary – Forage quality evaluation.

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LH227

In 2004, LH227 topcrosses were evaluated at two locations, Madison and Arlington. The 106 entries consisted of 98 WQS C0 and C1 S4+ families crossed to LH227 and eight hybrid checks. There were three replications at each location. The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 31,900 plants/acre at Madison, and 32,400 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 16. The Arlington trial was harvested on October 11, which was after the first frost. Based on forage yield, 29 new LH227 topcrosses were chosen for nutritional evaluation (LH227 – Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (LH227– Forage quality evaluation).

Four-tester C0 and C1 Summary

Ninety WQS families were testcrossed to each of HC33, LH198, LH227, and LH244. The experimental topcrosses involved S5+ families derived from WQS C0 and C1. The performance of these families when testcrossed to individual testers are presented in trials HC33, LH198, LH227, or LH244, respectively. The average forage yield over all four inbred testers is presented in Four-tester summary – Forage yield evaluation. Forage quality evaluation is presented in Four-tester summary – Forage quality evaluation.

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LH244

In 2004, LH244 topcrosses were evaluated at two locations, Madison and Arlington. The 95 entries consisted of 87 WQS C0 and C1 S4+ families crossed to LH244 and eight hybrid checks. There were three replications at each location. The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 32,400 plants/acre at Madison, and 29,700 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 20. The Arlington trial was harvested on October 12, which was after the first frost. Based on forage yield, 21 new LH244 topcrosses were chosen for nutritional evaluation (LH244 – Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (LH244 – Forage quality evaluation).

Four-tester C0 and C1 Summary

Ninety WQS families were testcrossed to each of HC33, LH198, LH227, and LH244. The experimental topcrosses involved S5+ families derived from WQS C0 and C1. The performance of these families when testcrossed to individual testers are presented in trials HC33, LH198, LH227, or LH244, respectively. The average forage yield over all four inbred testers is presented in Four-tester summary – Forage yield evaluation. Forage quality evaluation is presented in Four-tester summary – Forage quality evaluation.

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Four-Tester Summary

Ninety WQS families were testcrossed to each of HC33, LH198, LH227, and LH244. The experimental topcrosses involved S5+ families derived from WQS C0 and C1. The performance of these families when testcrossed to individual testers are presented in trials HC33, LH198, LH227, or LH244, respectively.

The average forage yield over all four inbred testers is presented in Four-tester summary – Forage yield evaluation. Forage quality evaluation is presented in Four-tester summary – Forage quality evaluation.

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HC33C2

In 2004, HC33 topcrosses were evaluated at two locations, Madison and Arlington. The 44 entries consisted of 40 WQS C2 S3+ families crossed to HC33 and four hybrid checks. There were two replications at each location.

The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 32,400 plants/acre at Madison, and 32,500 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 22. The Arlington trial was harvested on October 13, which was after the first frost.

Based on forage yield, 15 new HC33 topcrosses were chosen for nutritional evaluation (HC33C2 – Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (HC33C2 – Forage quality evaluation).

Thirty-nine families that appeared in HC33C2 also appeared in trial LH227C2. For a summary of perfomance over both testers see Two-tester C2 yield summary and Two-tester C2 quality summary.

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LH227C2

In 2004, LH227 topcrosses were evaluated at two locations, Madison and Arlington. The 45 entries consisted of 41 WQS C2 S3+ families crossed to HC33 and four hybrid checks. There were two replications at each location.

The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 31,000 plants/acre at Madison, and 31,000 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 23. The Arlington trial was harvested on October 12, which was after the first frost.

Based on forage yield, 15 new LH227 topcrosses were chosen for nutritional evaluation (LH227C2 – Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (LH227C2 – Forage quality evaluation).

Thirty-nine families that appeared in LH227C2 also appeared in trial HC33C2. For a summary of perfomance over both testers see Two-tester C2 yield summary and Two-tester C2 quality summary.

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Two-Tester C2 Summary

Thirty-nine WQS families were testcrossed to both HC33 and LH227. The experimental topcrosses involved S3+ families derived from WQS C2. The performance of these families when testcrossed to individual testers are presented in trials HC33C2 or LH227C2, respectively.

Thirty-nine families that appeared in HC33C2 also appeared in trial LH227C2. For a summary of perfomance over both testers see Two-tester C2 yield summary and Two-tester C2 quality summary.

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NEWINB 2004

In 2004, 16 hybrids involving inbreds W601S, W602S, W603S, and W604S each crossed to HC33, LH198, LH227, and LH244 were evaluated at three locations, Madison, Arlington, and Eau Claire, WI. The trial also included four hybrid checks. There were three replications at each location. The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The Eau Claire trial was planted on May 12. The average planting densities were 30,880 plants/acre at Madison, 31,580 plants/acre at Arlington, and 32,090 plants/acre at Eau Claire. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 23. The Arlington trial was harvested on October 12, which was after the first frost. The Eau Claire trial was harvested on October 4. All entries were evaluated for forage yield (NEWINB– Forage yield evaluation) and nutritional quality (NEWINB– Forage quality evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre.

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GEM198

In 2004, GEM198 topcrosses were evaluated at two locations, Madison and Arlington. The 52 entries consisted of 48 S3+ families crossed to LH198 and four hybrid checks. There were two replications at each location.

The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 32,000 plants/acre at Madison, and 34,500 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 30. The Arlington trial was harvested on October 18, which was after the first frost.

Based on forage yield, 29 new GEM198 topcrosses were chosen for nutritional evaluation (GEM198 – Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (GEM198– Forage quality evaluation).

Forty-seven families that appeared in GEM198 also appeared in trial GEM244. For a summary of performance over both testers see Two- tester GEM summary.

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GEM244 (2004)

In 2004, GEM244 topcrosses were evaluated at two locations, Madison and Arlington. The 53 entries consisted of 49 S3+ families crossed to LH224 and four hybrid checks. There were two replications at each location.

The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 32,000 plants/acre at Madison, and 33,000 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The trial was harvested on September 30. The Arlington trial was harvested on October 14, which was after the first frost.

Based on forage yield, 30 new GEM244 topcrosses were chosen for nutritional evaluation (GEM244 – Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (GEM244 – Forage quality evaluation).

Forty-seven families that appeared in GEM244 also appeared in trial GEM198. For a summary of performance over both testers see Two- tester GEM summary.

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GEMADV

In 2004, 64 hybrids were evaluated at two locations, Madison and Arlington. The 64 entries consisted of 60 S4+ families from several GEM breeding populations crossed to HC33, LH198, LH227, and/or LH244 and four hybrid checks. There were three replications at each location. The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 32,400 plants/acre at Madison, and 31,900 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 28. The Arlington trial was harvested on October 18, which was after the first frost. Based on forage yield, 39 GEMADV topcrosses were chosen for nutritional evaluation (GEMADV– Forage yield evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre (GEMADV– Forage quality evaluation).

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Two-Tester GEM Summary

Forty-seven GEM families were testcrossed to both LH198 and LH244. The experimental topcrosses involved S3+ families derived from several GEM breeding populations. The performance of these families when testcrossed to individual testers are presented in trials GEM198, or GEM244, respectively.

The average forage yield over all four inbred testers is presented in Two-tester GEM summary – Forage yield evaluation. Forage quality evaluation is presented in Two-tester GEM summary – Forage quality evaluation.

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GEMNEW

The GEMNEW trial consisted of the ongoing silage evaluation of elite GEM topcrosses that were identified in the past year by GEM cooperators as having high grain yield and suitable maturity (<120RM) for Wisconsin. There were 36 entries in GEMNEW involving early-generation GEM inbreds topcrossed to LH185, LH198, LH200, LH283, or, and LH287. There were also four population crosses involving WQS C2, two experimental hybrids provided by Wyfells, and six hybrid checks. There were 3 replications at each location.

The planting date at Madison was May 7. The Arlington trial was delayed until June 3 due to excessive rainfall. The average planting densities were 31,800 plants/acre at Madison, and 31,900 plants/acre at Arlington. Temperatures were relatively cool throughout the season until late August and September, but the plots were in excellent condition at harvest. The Madison trial was harvested on September 29. The Arlington trial was harvested on October 18, which was after the first frost.

Based on forage yield, 19 GEMNEW topcrosses were chosen for nutritional evaluation (GEMNEW– Forage yield evaluation) and nutritional quality (GEMNEW– Forage quality evaluation). Nutritional evaluations included assessment of neutral detergent fiber (NDF), in vitro true digestibility (IVD), in vitro NDF digestibility (IVNDFD), crude protein (CP), and starch concentration. Based on these values, milk/ton of forage and milk/acre were estimated based on MILK2000, which uses forage composition (NDF, IVD, IVNDFD, CP, and starch) to estimate potential milk production per ton of forage. Forage yield is then used to estimate potential milk per acre.

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