Apple Maturity Report-Winchester Sep 30-2021
Category Archives: Harvest maturity
Sherif M. Sherif, Assistant Professor of Horticulture at Virginia Tech, School of Plant and Environmental Sciences, AHS Jr. Agricultural Research and Extension Center
595 Laurel Grove Road, Winchester, VA 22602
Tel. 540-232-6035, Email: ssherif@vt.edu
Apple Maturity Report for September 16
We checked the maturity of apples growing at the Alson H. Smith, Jr. AREC on September 16.
With clear days, dry conditions, and cool nights we couldn’t ask for a better stretch of weather. Many growers are starting to pick their main cultivars, including Red Delicious and Golden Delicious. Data from the AREC show that both of these cultivars are still in an ideal window for long-term storage. Jonagolds and Empires are entering into the ideal harvest window. Idareds and Romes are probably a week or so away, and Yorks are probably two weeks away from their ideal harvest maturity.
Below are all of our harvest data for 2014. Click on this sentence to learn more about the different maturity indices.
| Maturity Report 2014, Virginia Tech | |||||||||||
| Sample Collection Date | Cultivar | Location | Number of Orchards Tested (10 Fruit Each) | Background Color (1-4)* | Red Color (%) | Firmness (lbs) | Soluble Solids (ºBrix) | Starch-iodine Index (1-8)** | Fruit Diameter (inches) | Fruit wt. (g) | Ethylene (ppm) |
| 8/18/14 | Gala (Crimson) | AHS JR AREC | 1 | – | 80.4 | 23.2 | 11.2 | 1.1 | 2.66 | 144 | 0.0 |
| 8/25/14 | Gala (Crimson) | AHS JR AREC | 1 | – | 93.2 | 20.0 | 13.3 | 3.4 | 2.79 | 162 | 0.4 |
| 8/25/14 | Gala (Buckeye) | AHS JR AREC | 1 | – | 98.7 | 21.6 | 14.9 | 4.0 | 2.79 | 172 | 1.6 |
| 8/18/14 | Golden Supreme | AHS JR AREC | 1 | 3.1 | – | 18.1 | 10.9 | 1.7 | 2.88 | 174 | 0.0 |
| 8/25/14 | Golden Supreme | AHS JR AREC | 1 | 2.6 | – | 16.9 | 11.5 | 2.6 | 2.82 | 166 | 0.0 |
| 8/25/14 | Golden Delicious | Winchester | 12 | 2.2 | – | 18.6 | 12.4 | 1.5 | 2.85 | 166 | 0.0 |
| 9/16/14 | Golden Delicious | Winchester | 2 | 2.9 | – | 16.3 | 13.5 | 4.6 | 2.82 | 161 | 0.0 |
| 8/18/14 | Honeycrisp | AHS JR AREC | 1 | – | 53 | 18.5 | 11.8 | 1.1 | 3.27 | 232 | 0.0 |
| 8/25/14 | Honeycrisp | AHS JR AREC | 1 | – | 55 | 15.8 | 13.0 | 1.8 | 3.36 | 247 | 4.9 |
| 8/25/14 | Red Delicious (Scarlet Spur) | Winchester | 1 | – | 91 | 19.2 | 10.9 | 1.3 | 2.90 | 179 | 0.0 |
| 8/25/14 | Red Delicious (Red Chief) | Winchester | 2 | – | 80 | 19.3 | 10.6 | 1.2 | 2.92 | 182 | 0.0 |
| 8/25/14 | Red Delicious (Nured) | AHS JR AREC | 1 | – | 87 | 18.0 | 9.8 | 1.1 | 2.83 | 166 | 0.0 |
| 8/25/14 | Red Delicious (Redspur) | Winchester | 1 | – | 64 | 18.6 | 11.2 | 2.1 | 2.93 | 182 | 0.0 |
| 8/25/14 | Red Delicious (Ace) | AHS JR AREC | 1 | – | 95 | 19.7 | 10.8 | 1.0 | 2.78 | 160 | 0.0 |
| 8/25/14 | Red Delicious (Bisbee) | AHS JR AREC | 2 | – | 86 | 18.9 | 10.9 | 1.3 | 2.80 | 163 | 0.0 |
| 9/16/14 | Red Delicious (Nured) | AHS JR AREC | 1 | – | 97 | 17.0 | 11.7 | 2.4 | 2.83 | 167 | 0.9 |
| 9/16/14 | Red Delicious (Ace) | AHS JR AREC | 1 | – | 99 | 19.2 | 13.0 | 2.0 | 2.93 | 187 | 3.6 |
| 8/25/14 | Empire | AHS JR AREC | 3 | – | 64 | 18.8 | 11.7 | 1.6 | 2.82 | 148 | 0.0 |
| 9/16/14 | Empire | AHS JR AREC | 1 | – | 88 | 18.3 | 12.6 | 2.7 | 2.65 | 126 | 0.6 |
| 9/16/14 | Rome (Law) | AHS JR AREC | 1 | – | 92 | 21.7 | 12.2 | 3.0 | 2.92 | 163 | 0.3 |
| 9/16/14 | Rome (Taylor) | AHS JR AREC | 1 | – | 50 | 21.6 | 12.4 | 3.0 | 3.14 | 203 | 0.0 |
| 9/16/14 | York | AHS JR AREC | 2 | – | 80 | 23.8 | 11.1 | 1.3 | 2.90 | 161 | 0.0 |
| 9/16/14 | Jonagold | AHS JR AREC | 1 | – | 81 | 16.3 | 14.2 | 5.4 | 3.30 | 251 | 0.1 |
| 9/16/14 | Idared | AHS JR AREC | 1 | – | 61 | 15.2 | 12.9 | 2.0 | 3.00 | 180 | 0.0 |
| * 1 = green, 2 = light green, 3 = yellowish green, 4 = yellow. | |||||||||||
| ** 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | |||||||||||
Predicted 2014 Apple Harvest Dates
Predicting harvest date depends upon many factors, including full bloom date, accumulated heat units (growing degree days) over the course of the growing season, physiological stressors (e.g., disease and insect damage or drought), day to night temperature differentials as harvest approaches, and the amount of precipitation. However, the number of days between full bloom and harvest has been shown to be the most reliable predictor of harvest date.
Click here to learn more about pre-harvest drop management.
More than two decades ago, researchers in Michigan determined that there there are an average of 143 days between full bloom and the first commercial pick of Red Delicious apples that are to be held in controlled atmosphere storage (i.e., firmness between 17-18 lbs; starch between 2.5-4 on the 8-pt scale Cornell Starch Chart). Additional seasonal adjustments above or below the average number of days until harvest are made based upon the average daily minimum temperatures for the 15 days after full bloom.
For the past several seasons I have tested the Michigan model using fruit from a block of Bisbee Red Delicious on MARK rootstock. Results to date have shown that this model is very good at predicting harvest maturity in Virginia.
Based on the Michigan model, here are the predictions for 2014:
In Winchester, Bisbee Red Delicious full bloom was April 27 and average minimum temperature for the 15 days after full bloom was 0.5°F more than 50°F. Using this data in the Michigan model, harvest is predicted to be 143 days after full bloom. This puts the predicted harvest date for the first CA pick of Red Delicious at September 16.
In Central Virginia (Tyro), full bloom for Red Delicious was estimated to be April 20 and the predicted harvest is September 9.
If you want to compare the model to your own situation, here are the previous years’ predicted harvest dates:
2011 Winchester: September 10
2012 Winchester: August 26
2012 Central VA (Batesville): August 25
2013 Winchester: September 18
2013 Central VA (Piney River): September 15
Since most growers have Red Delicious trees in their orchards, other cultivars (and strains of Red Delicious that ripen earlier than Bisbee) can be estimated based upon experience on their picking date relative to Red Delicious.
Another method for estimating harvest date uses the rule-of-thumb that says, “for each 2-3 days departure for the normal bloom date, there will be a one-day departure from the normal harvest date.” (Blanpied and Silsby, 1992).
You can find more information about harvest maturity indices in this post.
Starting in August, I will start conducting maturity evaluations of fruit from the Winchester AREC and surrounding orchards.
References
Blanpied, G. and K. Silsby. 1992. Predicting Harvest Date Window for Apples. Cornell Information Bulletin 221. <<pdf>>
Beaudry, R., P. Schwallier, and M. Lennington. 1993. Apple Maturity Prediction: An Extension Tool to Aid Fruit Storage Decisions. HortTechnology 3(2): 233-239.
Harvest Maturity Report for October 8
On Tuesday (October 8), we sampled York, Cripps Pink (Pink Lady), Winesap, Granny Smith, Stayman, Fuji (BC2), and Suncrisp (which had ReTain and NAA applications) apples from trees on or near the AREC for this week’s maturity report. Despite the summer-like weather late last week and over the weekend, apples are continuing to ripen slowly. Fuji, Suncrisp, and Granny Smith are all showing starch degradation, (though ethylene levels remain low) and should be picked soon. We starting picking our Fuji (BC2) trees today.
York harvest started for some growers last week, and I suspect many growers in the Northern Shenandoah Valley are focusing their attention to this variety right now. The Yorks that we tested (Ramey’s and Imperial) were very firm (19.9 lbs), have excellent color (84% blush), a fair amount of sugar (12.1 Brix), and only showed a minimal amount of starch degradation (~1.3).
Pink Lady apples are already showing high sugar levels (13.1 Brix), but they are still quite starchy and varietal flavor hasn’t started to develop. I’d say they are still a couple-few weeks away from harvest.
The remnants of hurricane/tropical storm Karen is predicted to hit the region tonight, and for the first time this harvest season we are forecasted to have a prolonged stretch of rainy weather. Although the rains might slow down harvest activities, it will help to size up the later cultivars.
Click the on the link at the end of this sentence to download a copy of the 2013 Oct 8 Maturity Report.
Harvest Maturity Report for September 23
On Monday, September 23, we collected Rome, York, Fuji, and Stayman apple samples for this week’s maturity report (2013 Sept 23 Maturity Report). The weather in the northern Shenandoah Valley will remain cool, with clear sunny days for the next week. These conditions are continuing to promote excellent fruit color and varietal flavors, while also extending the harvest window for many cultivars.
Of the fruit we measured this week, Rome harvest should be starting soon (starch = 3.3; ethylene <1.0), while the main Fuji harvest crop will probably not be ready to pick until next week at the earliest. Staymans and Yorks still have very high firmness (>18.8 and 23.6 lbs, respectively) and very low ethylene (<1.0) and starch degradation (=1), indicating that it will be several more weeks until they will be physiologically mature enough for harvest.
Golden Delicious harvest is concluding for many growers, though fruit that is still on the trees has maintained a high level of quality. For a pre-harvest drop test, we did a large Red Delicious sampling late last week, and we will do another one next week. Red Delicious harvest is still ongoing, with many strains still viable for long-term storage and SmartFresh applications.
As always, due to location, rootstock, strain, and environmental factors, fruit in your orchards may be at a different maturity than the fruit at the AREC. For this reason, you should be checking blocks several times a week to ensure that you harvest at your desired maturity. More information about harvest maturity indices can be found at my post from last year.
Harvest Maturity Report for September 16
On Monday, September 16, we harvested Red Delicious, Golden Delicious, Empire, Idared, Rome, and Fuji BC2 (a late ripening strain) for this week’s Maturity Report. Based on the apples that we harvested at the AREC, Goldens are moving past the point where they should be harvested for long term storage. Reds are still OK for long term storage, but a few of the Red Delicious apples that we tested had very advanced maturity. Empires are eating well and should be picked soon. Earlier ripening blocks of Romes and Idared should be checked as they are starting to ripen at the AREC. We’re looking to start our Fuji harvest late next week.
Besides for a chance of showers over the weekend, the forecast for the next week continues to look excellent for harvest.
Harvest Maturity Report for September 10
We harvested apples on September 10 for this week’s harvest maturity. Due to our annual Field Day and running samples for a pre-harvest drop trial, we only ran Golden Delicious, Red Delicious, and two strains of Fuji. From these data and my observations from around Frederick County, it appears that sugar content (soluble solids) are starting to come up in Golden Delicious, while starch degradation is still optimal for long term storage. Red Delicious are starting to ripen, and some early coloring strains are already being picked. I expect Red Delicious harvest to be in full swing by early next week. Early strains of Fuji are ready for harvest, but later strains still have several weeks before they will be ready for harvest. On Thursday, we’ll be harvesting Daybreak Fuji from a tall spindle planting and Rising Sun Fuji from a rootstock trial.
I expect the heat over these past couple-few days will advance apple ripening faster than what we have seen up until this time, so keep checking blocks that are near to your ideal harvest maturity. The heat is forecasted to break on Friday after which we’ll return to more moderate temperatures for at least seven days.
Click the link to the right for this week’s harvest maturity evaluation data.
Harvest Maturity Report for September 3
We collected fruit on Tuesday for this week’s maturity testing. Most growers in the Winchester area are finished or near to finishing Honeycrisp and Galas and moving into the main cultivars. Golden Delicious harvest has started, but the fruit has not advanced in maturity very much over the past week and is still very variable based on location and planting system. Compared to last week, the Goldens have lost firmness, but not starch and they have not increased in soluble solids or ethylene. Most Red Delicious strains are still at least a week away from early harvests for long term storage. This is despite the deep red colors that are developing. Picking of early strains of Fuji is underway, and like the other red skinned cultivars appear to have very nice color and size this year. Empires are starting to ripen and can probably be picked sometime in the next week, particularly if the fruit is going to be stored for any significant amount of time.
Over the next week, we are going to remain in a relatively dry weather pattern with warm but not hot days in the 80s and cool nights in the 50s and 60s. These conditions are ideal for developing color on red skinned cultivars and allowing the fruit to hang on the tree until ideal maturity and flavor has developed. We can only hope that these conditions will continue for several more weeks.
Click on the below link to download a pdf of the complete harvest maturity report for September 3, 2013.
Annual End-of-August Maturity Testing
This it the 28th year that researchers at the Alson H. Smith, Jr. AREC have recorded Golden Delicious and Red Delicious apple maturity data from orchards based in and around Winchester. Including 2013, data for Empire has been taken for twelve years and Gala for six years. In recent years, we have also added other commercially important cultivars to the analyses in order to generate long term averages. These data provide an interesting insight into the current season’s harvest, and can help growers make decisions on when to pick different blocks.
As discussed in a previous post, bloom date was about three weeks later than in 2012 and fairly close to the long-term averages. This should mean that harvest dates will be relatively “normal” or at least more similar to harvest dates in the late 1990’s through early 2000’s than they have been in the last several years.
As of this week, most growers in the Northern Shenandoah region are finishing up picking Ginger Golds, and have started picking Gala and Honeycrisp. Some growers in Central Virginia are finishing Gala and starting with Golden Delicious.
Many of the Golden Delicious blocks that we tested this week had very nice fruit finish, with minimal russet. Golden Delicious maturity was quite variable in the blocks that we tested, and it appears that some blocks will be ready to harvest within the next week, while others are probably 7-10 days away from being ready to harvest. The use of ReTain by some growers may explain some of this variability.
With the cool nights that we have experienced in August, red skinned cultivars have developed better than average color. However, be sure to check the starch and sugar levels before picking to be sure that the apples are mature enough to pick. Many Red Delicious apples that we tested this week had great color but very little starch degradation and soluble solids were only at 9-10 Brix.
Below are the data from this year’s end-of-August apple maturity sampling. In each year, the samples were taken around August 25 (August 26 this year) and consist of apples from the AREC and a few local growers. Thanks to Dave Carbaugh and Abby Kowalski for collecting and testing the fruit. Please refer to my post from last year if you need help interpreting the different maturity indices. You can also download a pdf of the 2013 Annual August Maturity Report.
|
Golden Delicious Maturity Report 1986-2013 |
|
|||||
| Year |
Background Color (1-4)* |
Firmness (lbs) |
Soluble Solids (ºBrix) |
Starch-iodine Index (1-8)** |
Ethylene (ppm) |
Bloom Date |
| 1986 |
2.2 |
19.5 |
12.7 |
|||
| 1987 |
20.0 |
12.2 |
||||
| 1988 |
18.6 |
11.0 |
1.5 |
|||
| 1989 |
17.7 |
10.3 |
2.0 |
|||
| 1990 |
18.0 |
10.5 |
1.6 |
|||
| 1991 |
1.8 |
19.7 |
12.0 |
2.1 |
||
| 1992 |
1.8 |
20.1 |
12.0 |
1.6 |
||
| 1993 |
1.9 |
19.8 |
11.6 |
1.5 |
||
| 1994 |
2.3 |
19.8 |
12.0 |
1.7 |
||
| 1995 |
0.9 |
18.8 |
10.9 |
2.1 |
||
| 1996 |
2.9 |
19.6 |
11.2 |
2.9 |
||
| 1997 |
2.0 |
21.8 |
11.7 |
2.0 |
||
| 1998 |
2.5 |
19.2 |
12.2 |
2.1 |
||
| 1999 |
1.9 |
20.3 |
11.7 |
1.4 |
||
| 2000 |
1.8 |
17.5 |
11.9 |
2.5 |
||
| 2001 |
1.9 |
20.1 |
11.0 |
1.4 |
||
| 2002 |
2.2 |
21.2 |
11.4 |
2.1 |
||
| 2003 |
2.6 |
20.3 |
11.1 |
1.2 |
||
| 2004 |
2.3 |
18.2 |
12.3 |
2.0 |
||
| 2005 |
1.8 |
20.1 |
11.4 |
1.7 |
||
| 2006 |
1.9 |
18.5 |
12.4 |
1.8 |
||
| 2007 |
1.6 |
18.0 |
12.3 |
1.6 |
||
| 2008 |
2.1 |
18.3 |
12.9 |
1.6 |
22-23 Apr |
|
| 2009 |
1.8 |
17.2 |
12.4 |
1.7 |
22-Apr |
|
| 2010 |
1.6 |
18.6 |
12.9 |
1.4 |
13-Apr |
|
| 2011 |
2.1 |
20.1 |
12.9 |
1.2 |
20-Apr |
|
| 2012 |
2.5 |
18.5 |
13.0 |
1.3 |
0.00 |
2-Apr |
| 2013 |
2.2 |
18.3 |
11.9 |
2.2 |
0.17 |
25-Apr |
| Mean |
2.0 |
19.2 |
11.9 |
1.8 |
17-Apr |
|
| Max |
2.9 |
21.8 |
13.0 |
2.9 |
25-Apr |
|
| Min |
0.9 |
17.2 |
10.3 |
1.2 |
2-Apr |
|
| * 1 = green, 2 = light green, 3 = yellowish green, 4 = yellow. | ||||||
| ** 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | ||||||
|
Red Delicious Maturity Report 1986-2013 |
||||||
| Year |
Red Color (%) |
Firmness (lbs) |
Soluble Solids (ºBrix) |
Starch-iodine Index (1-8)* |
Ethylene (ppm) |
Bloom Date |
| 1986 |
72.0 |
18.8 |
11.2 |
|||
| 1987 |
68.0 |
19.8 |
10.8 |
|||
| 1988 |
54.0 |
18.4 |
10.0 |
1.6 |
||
| 1989 |
69.0 |
18.6 |
8.7 |
1.6 |
||
| 1990 |
73.0 |
18.1 |
8.9 |
1.5 |
||
| 1991 |
69.0 |
18.8 |
10.4 |
1.6 |
||
| 1992 |
76.0 |
20.8 |
10.2 |
1.3 |
||
| 1993 |
68.0 |
21.7 |
9.5 |
1.7 |
||
| 1994 |
68.0 |
19.7 |
9.5 |
1.9 |
||
| 1995 |
68.0 |
19.2 |
9.1 |
1.6 |
||
| 1996 |
62.5 |
19.3 |
8.9 |
2.0 |
25-Apr |
|
| 1997 |
66.7 |
22.4 |
9.4 |
1.2 |
25-Apr |
|
| 1998 |
81.9 |
19.3 |
9.9 |
2.5 |
15-Apr |
|
| 1999 |
65.5 |
19.8 |
10.5 |
1.9 |
28-Apr |
|
| 2000 |
87.4 |
16.2 |
9.6 |
2.3 |
11-Apr |
|
| 2001 |
61.0 |
20.5 |
8.3 |
1.8 |
28-Apr |
|
| 2002 |
60.2 |
21.4 |
9.4 |
2.1 |
22-Apr |
|
| 2003 |
58.4 |
20.4 |
8.5 |
1.9 |
22-Apr |
|
| 2004 |
88.2 |
16.7 |
10.0 |
2.3 |
20-Apr |
|
| 2005 |
73.7 |
18.7 |
9.2 |
2.0 |
24-Apr |
|
| 2006 |
63.8 |
18.7 |
10.7 |
2.0 |
16-Apr |
|
| 2007 |
81.1 |
18.1 |
11.0 |
1.7 |
22-Apr |
|
| 2008 |
86.6 |
18.1 |
9.4 |
2.0 |
22-Apr |
|
| 2009 |
79.2 |
17.5 |
10.2 |
1.9 |
24-Apr |
|
| 2010 |
65.9 |
18.2 |
11.5 |
1.7 |
8-Apr |
|
| 2011 |
67.5 |
19.8 |
11.5 |
2.1 |
21-Apr |
|
| 2012 |
92.1 |
18.2 |
11.9 |
1.8 |
0.03 |
29-30-Mar |
| 2013 |
91.3 |
18.4 |
9.8 |
2.0 |
0.25 |
23-Apr |
| Mean |
72.1 |
19.1 |
9.9 |
1.8 |
0.1 |
20-Apr |
| Max |
92.1 |
22.4 |
11.9 |
2.5 |
0.3 |
28-Apr |
| Min |
54.0 |
16.2 |
8.3 |
1.2 |
0.0 |
29-30-Mar |
| * 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | ||||||
|
Gala Maturity Report 2008-2013 |
|
|||||
| Year |
Red Color (%) |
Firmness (lbs) |
Soluble Solids (ºBrix) |
Starch-iodine Index (1-8)* |
Ethylene (ppm) |
Bloom Date |
| 2008 |
93.5 |
18.3 |
13.6 |
5.6 |
21-Apr |
|
| 2009 |
86.8 |
17.5 |
13.4 |
4.5 |
22-Apr |
|
| 2010 |
78.0 |
16.3 |
14.9 |
6.4 |
9-Apr |
|
| 2011 |
77.5 |
19.4 |
13.7 |
4.9 |
19-Apr |
|
| 2012 |
91.1 |
18.0 |
13.2 |
4.1 |
7.13 |
29-30-Mar |
| 2013 |
91.1 |
18.0 |
12.4 |
5.4 |
1.71 |
23-Apr |
| Mean |
86.3 |
17.9 |
13.5 |
5.2 |
4.4 |
15-Apr |
| Max |
93.5 |
19.4 |
14.9 |
6.4 |
7.1 |
23-Apr |
| Min |
77.5 |
16.3 |
12.4 |
4.1 |
1.7 |
29-30-Mar |
| * 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | ||||||
|
Empire Maturity Report 2002-2013 |
|
|||||
| Year |
Red Color (%) |
Firmness (lbs) |
Soluble Solids (ºBrix) |
Starch-iodine Index (1-8)* |
Ethylene (ppm) |
Bloom Date |
| 2002 |
42.0 |
25.3 |
10.4 |
2.1 |
||
| 2003 |
60.4 |
21.9 |
9.6 |
1.7 |
||
| 2004 |
78.1 |
17.2 |
10.9 |
2.2 |
||
| 2005 |
55.3 |
20.3 |
10.1 |
1.9 |
||
| 2006 |
46.0 |
19.7 |
10.7 |
2.1 |
||
| 2007 |
64.0 |
17.9 |
10.6 |
2.1 |
||
| 2008 |
66.3 |
18.2 |
11.0 |
2.1 |
21-Apr |
|
| 2009 |
52.4 |
16.6 |
10.9 |
1.1 |
20-Apr |
|
| 2010 |
44.3 |
18.1 |
10.7 |
1.8 |
||
| 2011 |
49.8 |
19.7 |
11.2 |
2.0 |
||
| 2012 |
85.9 |
19.2 |
12.5 |
1.7 |
0.01 |
29-Mar |
| 2013 |
63.0 |
18.6 |
10.6 |
1.5 |
0.04 |
21-Apr |
| Mean |
59.0 |
19.4 |
10.8 |
1.9 |
0.0 |
15-Apr |
| Max |
85.9 |
25.3 |
12.5 |
2.2 |
0.0 |
21-Apr |
| Min |
42.0 |
16.6 |
9.6 |
1.1 |
0.0 |
29-Mar |
| * 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | ||||||
|
Maturity Report – Other Varieties 2011 |
||||||
| Cultivar |
Red Color (%) |
Firmness (lbs) |
Soluble Solids (ºBrix) |
Starch-iodine Index (1-8)* |
||
| HoneyCrisp |
66.2 |
15.8 |
13.0 |
5.1 |
||
| Idared |
17.0 |
19.9 |
11.1 |
1.2 |
||
| * 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | ||||||
|
Maturity Report – Other Varieties 2012 |
|
|
||||
| Cultivar |
Red Color (%) |
Firmness (lbs) |
Soluble Solids (ºBrix) |
Starch-iodine Index (1-8)* |
Ethylene (ppm) |
Bloom Date |
| Fuji Early Strain |
65.5 |
16.7 |
14.7 |
4.1 |
0.03 |
5-Apr |
| Fuji Late Strain |
26.0 |
20.9 |
12.1 |
2.1 |
0.03 |
5-Apr |
| Idared |
36.7 |
17.0 |
12.3 |
1.3 |
0.00 |
2-Apr |
| Rome |
39.8 |
22.5 |
12.3 |
1.5 |
. |
12-Apr |
| York |
41.8 |
22.4 |
10.7 |
1.0 |
0.00 |
3-Apr |
| * 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | ||||||
|
Maturity Report – Other Varieties 2013 |
|
|
||||
| Cultivar (number of orchards tested) |
Red Color (%) |
Firmness (lbs) |
Soluble Solids (ºBrix) |
Starch-iodine Index (1-8)* |
Ethylene (ppm) |
Bloom Date |
| Cameo (1) |
33.5 |
18.1 |
10.2 |
1.7 |
0.53 |
N/A |
| Fuji Early Strain (2) |
80.3 |
16.3 |
13.6 |
4.3 |
1.51 |
25-Apr |
| Ginger Gold (2) |
3.9** |
16.0 |
12.8 |
3.5 |
0.00 |
24-Apr |
| Idared (6) |
41.1 |
17.5 |
10.1 |
1.2 |
0.12 |
23-Apr |
| Jonagold (1) |
35.5 |
18.7 |
11.8 |
2.8 |
0.00 |
23-Apr |
| Rome (1) |
21.2 |
24.6 |
9.2 |
2 |
0.00 |
1-May |
| York (1) |
53.5 |
24.4 |
9.4 |
1 |
1.20 |
25-Apr |
| * 1 = 100% starch, 5 = 60% starch, 8 = 0% starch. | ||||||
| ** 1 = green, 2 = light green, 3 = yellowish green, 4 = yellow. | ||||||