Green Gold Report – May 29, 2017 – WESTERN / CENTRAL Hay Day for the Virden area looks to be June 2nd . SITE Portage Winkler CENTRAL AVERAGE
RFV NIR
Brandon Brandon North Virden Virden North WESTERN AVERAGE
Height 19 22 20.5
CP
210 210
RFV PEAQ 210 200 205
205 179 197 194
268 210 204 227
12 19 20 17
24 25 26 25
29 29
This report doesn’t include the sample for the Portage area as it hadn’t reached the in time for this report which is already late. Access all 2017 Green Gold Reports For more info: John McGregor, MFGA Green Gold Coordinator e:
[email protected], w: www.mfga.net or follow us on Twitter!
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2017 MFGA Green Gold Report
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MANITOBA FORAGE & GRASSLAND ASSOCIATION
What we are seeing Looking at the Virden area we see that the RFVs have dropped about 35 pts over the past 4 days. At this rate it looks like that area may hit a RFV of 170 by June 2nd. The Brandon area has been dry and we aren’t seeing much growth over the past week. In the Central area we only have the Winkler results at this time but comparing crop height and stage it looks like it may average out 220 which will likely puts Hay Day closer to June 5th. Grasses Influence RFV Alfalfa fields either by design or time tend to have grasses in the mix. The type of grass and the percentage can affect the RFV of your forage. Most grasses are higher in fibre compared to alfalfa (see diagram below), and therefore reach RFV of 150 more quickly than alfalfa. If you want the same quality forage (RFV) with an alfalfa-grass mixture versus pure alfalfa, you need to start harvesting one week earlier, as the following table indicates. Influence of Cutting Date on RFV: Cutting Date Week 1 Week 2 Week 3 Week 4 Week 5
Alfalfa 275 204 164 130 116
Alfalfa/Brome 217 162 138 113 105
Alfalfa/Timothy 230 178 178 121 101
Reference: Spandi and Hesterman: Michigan State University
First C uttin g F ast Appro ach ing Below are the optimal neutral detergent fiber (NDF) targets for high quality forages: Forage NDF for high producing and early lactation dairy cows Legumes: