Green Gold Report â May 30, 2016 â EASTERN
PLATINUM SPONSOR
PLATINUM SPONSOR
Green Gold Report – May 30, 2016 – EASTERN HAY DAY is here. Alfalfa in the 24 inch range has about one extra day before they will be at optimum stage. For those planning on taking silage you likely have an extra 2 day window. SITE Giroux Grunthal Kleefeld La Broquerie New Bothwell Ste. Anne Steinbach Stonewall AVERAGE
RFV NIR 159 176 186 150 185 180 161 180 est
RFV PEAQ 162 174 182 170 187 184 142 184
Height 29 26 23 27 22 24 32 24
CP 21 25 24 24 25 26 23 27 est
171
173
26
24
Fields in the area are in the early to late bud stage with very little change likely due to the daytime temperatures remaining in the low 20’s this past weekend. Looking at the forecast this week it looks like we will continue with rain and cooler temperatures which may help in slowing the drop in RFV Access all 2016 Green Gold Reports For more information contact: John McGregor, MFGA Extension Support e: [email protected], website: www.mfga.net or follow us on Twitter!
SILVER SPONSORS
BRONZE SPONSORS
2016 MFGA Green Gold Report
~1
~
MANITOBA FORAGE & GRASSLAND ASSOCIATION
What I am Seeing On Monday AM I stopped by this field that had been cut Sunday night. The alfalfa fields in the area were in the late bud stage and this dairy farmer had looked at the weather and saw a small window for Monday that could allow him to knock down this field and get it up as silage. Their comment was that they wanted some high protein feed this year. Alfalfa Weevil This AM I started to see alfalfa weevil larvae feeding on the alfalfa. The degree days for alfalfa weevil use a base development temperature of 9C and show that adults are active mainly in areas with 42 accumulated degree days (DD). Egg hatch begins at 167 accumulated DD. Presently as of the 29th of May we are at 172 DDs. Peak feeding occurs about mid-June (or 280 - 330 accumulated DD) when larvae are in the 3rd to 4thinstar. For alfalfa grown for hay, the most cost-efficient method is to cut the alfalfa early before feeding damage occurs. A treatment threshold of 40% tip feeding is recommended. With the potential delay in cutting due to rain growers may want to be checking fields for feeding damage. Aphids Found a few of these in the field and got a report from the Western area about them. These are likely pea aphids. It is quite common to have pea aphids in alfalfa, and low levels are probably of more benefit than harm by attracting natural enemies into the alfalfa. Economic thresholds for aphids are quite high and really only applicable when the crop is also drought stressed. Temperature With the rain, the cool temperatures this week may be a bonus. Temperature is the driving force behind most physiological processes that occur in a plant. These include photosynthesis, respiration, translocation of nutrients, carbon partitioning and cell wall formation. It stands to reason that changing temperature will have a dramatic impact on what goes on inside the plant. We see these effects each and every year when comparing alfalfa regrowth and forage quality in summer to that of regrowth and quality in the fall. Alfalfa can actually increase in quality over time in the fall as a result of cooler growing temperatures.
2016 MFGA Green Gold Report
~2
~
MANITOBA FORAGE & GRASSLAND ASSOCIATION
PLATINUM SPONSOR
Green Gold Report – May 30, 2016 – EASTERN HAY DAY is here. Alfalfa in the 24 inch range has about one extra day before they will be at optimum stage. For those planning on taking silage you likely have an extra 2 day window. SITE Giroux Grunthal Kleefeld La Broquerie New Bothwell Ste. Anne Steinbach Stonewall AVERAGE
RFV NIR 159 176 186 150 185 180 161 180 est
RFV PEAQ 162 174 182 170 187 184 142 184
Height 29 26 23 27 22 24 32 24
CP 21 25 24 24 25 26 23 27 est
171
173
26
24
Fields in the area are in the early to late bud stage with very little change likely due to the daytime temperatures remaining in the low 20’s this past weekend. Looking at the forecast this week it looks like we will continue with rain and cooler temperatures which may help in slowing the drop in RFV Access all 2016 Green Gold Reports For more information contact: John McGregor, MFGA Extension Support e: [email protected], website: www.mfga.net or follow us on Twitter!
SILVER SPONSORS
BRONZE SPONSORS
2016 MFGA Green Gold Report
~1
~
MANITOBA FORAGE & GRASSLAND ASSOCIATION
What I am Seeing On Monday AM I stopped by this field that had been cut Sunday night. The alfalfa fields in the area were in the late bud stage and this dairy farmer had looked at the weather and saw a small window for Monday that could allow him to knock down this field and get it up as silage. Their comment was that they wanted some high protein feed this year. Alfalfa Weevil This AM I started to see alfalfa weevil larvae feeding on the alfalfa. The degree days for alfalfa weevil use a base development temperature of 9C and show that adults are active mainly in areas with 42 accumulated degree days (DD). Egg hatch begins at 167 accumulated DD. Presently as of the 29th of May we are at 172 DDs. Peak feeding occurs about mid-June (or 280 - 330 accumulated DD) when larvae are in the 3rd to 4thinstar. For alfalfa grown for hay, the most cost-efficient method is to cut the alfalfa early before feeding damage occurs. A treatment threshold of 40% tip feeding is recommended. With the potential delay in cutting due to rain growers may want to be checking fields for feeding damage. Aphids Found a few of these in the field and got a report from the Western area about them. These are likely pea aphids. It is quite common to have pea aphids in alfalfa, and low levels are probably of more benefit than harm by attracting natural enemies into the alfalfa. Economic thresholds for aphids are quite high and really only applicable when the crop is also drought stressed. Temperature With the rain, the cool temperatures this week may be a bonus. Temperature is the driving force behind most physiological processes that occur in a plant. These include photosynthesis, respiration, translocation of nutrients, carbon partitioning and cell wall formation. It stands to reason that changing temperature will have a dramatic impact on what goes on inside the plant. We see these effects each and every year when comparing alfalfa regrowth and forage quality in summer to that of regrowth and quality in the fall. Alfalfa can actually increase in quality over time in the fall as a result of cooler growing temperatures.
2016 MFGA Green Gold Report
~2
~
MANITOBA FORAGE & GRASSLAND ASSOCIATION
