Michigan apple maturity reporting for 2014

Overall, this year’s Predicted Harvest Dates are about a week behind normal and a week behind last year.

The predicted harvest dates for every Enviro-weather weather station is now available from Michigan State University. In general, 2014 Predicted Harvest Dates are roughly a week behind normal and a week behind last year. Bloom dates this spring were also behind normal across the state.

 As always, the weather seems to be unusual each year and 2014 was no different. It began after an extremely long cold winter with a late, cool spring that eventually became somewhat normal in May and June. Little to no frost events occurred. This unusual spring was also characterized by considerable and seemingly unending record precipitation in most state locations. Most apple growers were successful in thinning the crop with most growers under thinning slightly. This moderate to heavy crop will mature close to predicted dates. Blocks with light crop loads will mature three or four days sooner.

The normal harvest dates for other varieties are listed in Table 3 for the Grand Rapids area. This year’s 2014 predicted dates and adjusted predicted dates are a rough estimate based on the McIntosh, Jonathan and Red Delicious predicted dates. Other areas of the state should adjust non-predicted varieties based on their own history. ReTain application should be applied 30 DBH (days before harvest). Use Table 3 2014 predicted harvest dates to time ReTain applications and adjust for varieties and locations.

Table 1. 2014 predicted peak harvest dates

Full bloom date

Predicted harvest date

Station

McIntosh

Jons

Reds

McIntosh

Jons

Reds

Observer

SWMREC

12-May

13-May

13-May

11-Sep

1-Oct

7-Oct

Shane

Deerfield

12-May

14-May

16-May

12-Sep

30-Sep

7-Oct

Tritten

Romeo

15-May

17-May

17-May

14-Sep

1-Oct

7-Oct

Tritten

Peach Ridge

21-May

22-May

23-May

19-Sep

2-Oct

10-Oct

Schwallier

Hart

23-May

24-May

25-May

23-Sep

8-Oct

14-Oct

Irish-Brown

NWMHRS

27-May

31-May

31-May

26-Sep

13-Oct

19-Oct

Rothwell

 Table 2. 2014 predicted peak harvest dates compared to normal and last year

Days ahead of normal

Days ahead of last year

Station

McIntosh

Jons

Reds

McIntosh

Jons

Reds

SWMREC

-8

-7

-7

-6

-8

-8

Deerfield

-7

-7

-8

-4

-9

-5

Flint

-6

-5

-4

-1

-6

-4

Peach Ridge

-9

-8

-9

-5

-5

-6

Hart

-7

-5

-6

-5

-5

-4

NWMHRS

-7

-10

-9

-4

-7

-6

 Table 3. Normal and 2014 peak harvest dates for varieties for the Grand Rapids area

Variety

Normal date

2014 predicted date

Paulared

24-Aug

28-Aug

Gingergold

26-Aug

30-Aug

Gala

10-Sep

14-Sep

McIntosh

15-Sep

19-Sep

Honeycrisp

18-Sep

22-Sep

Empire

22-Sep

26-Sep

Jonathan

28-Sep

2-Oct

Jonagold

28-Sep

2-Oct

Golden Delicious

2-Oct

6-Oct

Red Delicious

5-Oct

10-Oct

Idared

10-Oct

14-Oct

Rome

15-Oct

18-Oct

Fuji

25-Oct

28-Oct

Braeburn

25-Oct

28-Oct

Goldrush

1-Nov

4-Nov

Looking for more? View Michigan State University Extension’s Apple Maturity Program and Reports resource page for regional reports throughout the state and additional resources.

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