Predicted 2017 apple harvest dates

The 2017 predicted harvest dates are roughly a few days ahead of normal except in the north, which might be normal.

The predicted apple harvest dates are now available at all locations on the Michigan State University Enviro-weather website. We have less confidence in this year’s prediction for the middle of the state. Frost and a long, cold bloom make it difficult to predict the exact full bloom dates. Apple set is from 2-year-old, and in some places from 1-year-old, wood that will produce a very mixed maturity at harvest.

In general, 2017 predicted harvest dates are roughly a few days ahead of normal except in the north, which might be normal. Compared to last year, predicted dates are fairly normal except in the north, which are ahead of last year. Bloom dates this spring were early in the south and normal in the north. May was a cold month and a long, drawn out bloom period, especially in the middle of the state. We do expect mixed maturity at harvest time due to the long bloom.

As always, the weather seems to be unusual each year and 2017 was no different. It began with what appeared to be another very early spring, however cold May weather delayed bloom to a more normal timing from the middle of the state to the north. Most areas bloomed early. The cold May was also very dry and June followed with normal to hot temperatures, which gave us early to normal predicted harvest dates.

Frost damage is considerable and the state’s cropload is approximately 65 percent of normal. The tops of trees are heavy and the bottoms are light. Blocks with light crop loads will mature three or four days sooner than the predicted harvest dates. Heavy crop loads will mature seven days later than the predicted dates.

The normal harvest dates for other varieties are listed in Table 3 for the Grand Rapids, Michigan, area. This year’s 2017 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 days before harvest. Use Table 3 to time ReTain applications and adjust for varieties and locations.

Table 1. 2017 predicted peak harvest dates.

Full bloom date 2017

Predicted harvest date 2017

Station

McIntosh

Jonathans

Reds

McIntosh

Jonathans

Reds

Observer

SWMREC

April 23

April 24

April 25

Aug. 28

Sept. 15

Sept. 22

Bill Shane

Deerfield

April 25

April 26

April 27

Aug. 29

Sept. 18

Sept. 25

Bob Tritten

Romeo

April 28

May 1

May 1

Sept. 2

Sept. 25

Oct. 1

Bob Tritten

Peach Ridge

May 1

May 5

May 7

Sept. 5

Sept. 27

Oct. 4

Amy Irish-Brown

Hart

May 11

May 13

May 14

Sept. 13

Sept. 30

Oct. 6

Amy Irish-Brown

NWMHRS

May 19

May 20

May 21

Sept. 19

Oct. 8

Oct. 14

Nikki Rothwell

 

Table 2. 2017 predicted peak harvest dates compared to normal and last year.

Days ahead of normal

Days ahead of last year

Station

McIntosh

Jonathans

Reds

McIntosh

Jonathans

Reds

SWMREC

10

6

6

2

1

0

Deerfield

10

3

7

3

-1

0

Romeo

11

0

2

5

1

4

Peach Ridge

10

-1

1

2

2

1

Hart

5

3

8

0

2

2

NWMHRS

3

-2

3

1

-8

-7

 


Table 3. Normal and 2017 peak harvest dates for varieties for the Grand Rapids area

Variety

Normal date

2017 predicted date

Paulared

Aug. 24

Aug. 19

Gingergold

Aug. 26

Aug. 21

Gala

Sept. 10

Sept. 5

McIntosh

Sept.15

Sept. 5

Honeycrisp

Sept.18

Sept. 15

Empire

Sept.26

Sept. 25

Jonathan

Sept.28

Sept. 27

Jonagold

Sept.28

Sept. 27

Golden Delicious

Oct. 2

Oct. 1

Red Delicious

Oct.5

Oct. 4

Idared

Oct.10

Oct. 9

Rome

Oct.15

Oct. 14

Fuji

Oct.25

Oct. 24

Braeburn

Oct.25

Oct. 24

Goldrush

Nov. 1

Oct. 31

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