Variety - Hidden Valley A38
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Summary
Hidden Valley A38 was selected in 1981 and discarded several years later because the nuts appeared at that stage to set in tight bunches, making insect control difficult. In addition the tree appeared too open and could have a problem with sunburn in the future. In 1987 it was reassessed because of the high percentage of whole kernel.. The tree had changed shape by then and was no longer susceptible to sunburn. In addition the excessively tight bunches were probably due to juvenility, as it was no longer considered a problem. In 1992, Plant Breeders Rights were granted to A38 under the new Act.
It is a vigorous and precocious upright tree that produces a high yield per hectare. It falls mid season, most of the nuts are born close in to the main trunk.. Precocious. Susceptible to Husk Spot. We believe it to be suitable for high density plantings in conjunction with mechanical pruning.
| Royalty Status | PBR 1992-2012, expired, no royalties due |
| Early Yield/Ha | Precocious |
| Later Yield | Heavy |
| Kern Recovery | 36 - 40% |
| Whole Kernels | 60 - 90% |
| Kernel Wt | 2.7 - 3.0g |
| First Grade | 99 - 100% |
| Flower Season | Mid Season |
| Harvest Season | Mid to Late |
| Tree Size | Medium Upright |
| Husk Spot | Susceptable |
| Sticktights | Moderate, worse in dry conditions |
| Ethrel Response | Strong Effect |
| AVG | Unknown |
| Pollenisers | Unknown |
Details
Known Faults
A38 has a tendency towards sticktights, particulaly in dry years. This can go on to cause husk spot in later years. However it has a very good response to Ethrel, which largely controls the problem.
The kernel can have a sightly discoloured base. Also there can be a distinct line on the kernels at the point where the two halves meet at the base.
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