Rubus subgenus Rubus Watson 'Apache'
Originated from a cross of A-1007 x Navaho
Variety denomination - 'Apache', tested as A-1798
Plants are thornless
Bushes have erect canes
Fruit weight is 10 g
Berries have a conical shape
Fruiting habit - floricane fruiting (summer-bearing)
Flowering on floricanes starts in the second week of May
Ripening date (regular) - fourth week of June
Productivity is 2.7 kg per plant
Soluble solids - 10.7%
Cold hardiness is excellent
Heat tolerance is low
Country of origin - United States
Patent US PP11,865 P2 dated May 06, 2001
Current status - obsolete or rarely used
Recommended replacement - Osage
Canes of Apache are thornless, and are more erect than those of Arapaho and Navaho. If primocanes are tipped at 1,1 m to control primocane length and encourage lateral branching, Apache can be grown in a hedgerow without trellis support. Vigor and health ratings for Apache are higher than those for either Arapaho or Navaho, and winter injury ratings are comparable to those of Arapaho or Navaho. Outstanding characteristics of Apache include large fruit, high yields, good fruit quality.
Average berry weight is about 10 g, this is roughly twice more than Navaho. Seeds are significantly heavier than those of either Arapaho or Navaho. Apache bloomed 2 to 3 days later than Arapaho and 2 to 3 days before Navaho at the beginning of May. First harvest date for Apache averaged 15 days later than Arapaho and 5 d later than Navaho at the end of June. Harvest season period is about 35-40 days. Yield is much more than Arapaho, but lower, than Navaho. The fruiting period is two weeks shorter in Apache than in Navaho. Fruit of Apache are blocky and conical and very attractive with a glossy, black finish. Fruit firmness of Apache is less than that of Navaho but comparable to that of Arapaho.
Apache is moderately resistant to anthracnose and no disease problems have been experienced in evaluations where a single spray of lime sulfur was applied. No orange rust (Gymnoconia nitens) has been observed on Apache.
This cultivar also has two significant drawbacks - canes are very brittle, and white drupelets on ripen berries, even if the weather and soil conditions are enought for other blackberries.
|Cultivar||Yield, kg/ha||Berry weight, g|
|10% bloom||April 30||April 27||May 2|
|50% bloom||May 6||May 4||May 8|
|First||June 20||June 5||June 15|
|Peak||June 30||June 12||July 7|
|Last||July 27||July 24||August 2|
|Fruit (rating scale of 1 to 10 where 10 is the best)|
|Soluble solids, %||10.7||9.6||11.4|
|Plant (rating scale of 1 to 10 where 10 is the best)|
2. Include annual spring nitrogen (N) fertilization (about 56 kg/ha) using ammonium nitrate (NH4NO3);
3. Summer tipping of primocanes at 42 inch;
4. Sprinkler irrigation apply weekly during the harvest season;
5. Use dormant pruning;
6. A single application of liquid lime sulfur (94 L/ha) each spring at budbreak for control of anthracnose;
7. Plant spacing at least 0.6 m;
8. Do not plant in heavy soil.