2006 Trials – List

WQS244 | GQS604S | GEMNEW | NEWINB M244332

WQS244

In 2006, WQS244 testcrosses were evaluated at two locations, Madison and Arlington. There were three replications at each location. The 107 entries consisted of 101 S2-3 families crossed to LH244 and six hybrid checks. The WQS244 trial represents the forth cycle of selection in the WQS breeding population. The 20 best families will be recombined to create WQS C4. The planting date at Madison was 5/21/2006. The Arlington trial was planted on 6/2/2006. The average planting density was 32300 plants/acre at Madison. There were extreme winds during July at both locations causing extensive lodging, and unfortunately, the Arlington site was so severely damaged that the WQS244 trial was abandoned. Based on forage yield, 54 WQS244 testcrosses were chosen for nutritional evaluation (WQS244 – 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 MILK2006, 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 (WQS244 – Forage quality evaluation).

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GQS604S

In 2006, GQS604S testcrosses were evaluated at two locations, Madison and Arlington. There were two replications at each location. The 78 entries consisted of 73 S2 families from the GEM Quality Composite (GQS) crossed to W604S and five hybrid checks. The GQS604S trial represents the first cycle of selection in the GQS breeding population. The 20 best S2 families will be recombined to create GQS C1.

The planting date at Madison was 5/21/2006. The Arlington trial was planted on 6/2/2006. The average planting densities were 30,400 plants/acre at Madison and 28,600 plants/acre at Arlington. There were extreme winds during July at both locations causing extensive lodging.

Based on forage yield, 41 GQS604S testcrosses were chosen for nutritional evaluation (GQS604S – 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 MILK2006, 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 (GQS604S – Forage quality evaluation).

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GEMNEW

In 2006, GEMNEW topcrosses were evaluated at two locations, Madison and Arlington. The 30 entries consisted of 23 S3+ families crossed to several testers, six hybrid checks, and one population cross. There were three replications at each location.

The planting date at Madison was 5/21/2006. The Arlington trial was planted on 6/2/2006. The average planting density was 32800 plants/acre at Madison. There were extreme winds during July at both locations causing extensive lodging, and unfortunately, the Arlington site was so severely damaged that the GEMNEW trial was abandoned.

Based on forage yield, 14 GEMNEW topcrosses were chosen for nutritional evaluation (GEMNEW – 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 MILK2006, 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 (GEMNEW – Forage quality evaluation).

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NEWINB 2006

In 2006, NEWINB testcrosses were evaluated at three locations, Madison, Arlington, and Eau Claire. There were three replications at each location. The 40 entries consisted of crosses of our five recently released lines (W601S – W605S) with six testers (HC33, LH198, LH227, LH244, LH332, and TR7245), along with population crosses of WQS C0-C3 to two testers and three hybrid checks.

The planting date at Madison was 5/21/2006. The Arlington trial was planted on 6/2/2006. The average planting density was 32,300 plants/acre at Madison. There were extreme winds during July at the Madison and Arlington locations causing extensive lodging, and unfortunately, the Arlington site was so severely damaged that the NEWINB trial was abandoned. The Eau Claire trial was planted on 5/4/2006 and the planting density was 31,700 plants/acre. There was extreme drought stress causing widespread barreness at the Eau Claire site.

All NEWINB testcrosses were chosen for nutritional evaluation (NEWINB – 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 MILK2006, 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 (NEWINB– Forage quality evaluation).

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M244332

In 2006, M244332 testcrosses were evaluated at two locations, Madison and Arlington. There were three replications at each location. The 60 entries consisted of 56 S4+ families crossed to several testers and four hybrid checks. The 56 testcrosses involved advanced lines from WQS C2, GEM lines from CHO5015:N15 and SCRO1:N1310-398-1-B, and lines from LAX X B102.

The planting date at Madison was 5/21/2006. The Arlington trial was planted on 6/2/2006. The average planting density was 32300 plants/acre at Madison. There were extreme winds during July at both locations causing extensive lodging, and unfortunately, the Arlington site was so severely damaged that the M244332 trial was abandoned.

Based on forage yield, 22 M244332 testcrosses were chosen for nutritional evaluation (M244332 – 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 MILK2006, 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 (M244332 – Forage quality evaluation).

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