Variety - Hidden Valley A38

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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


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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Some data and images courtesy of DAFF Qld. Data is compiled to best of our knowledge at the time of publication but errors are possible. Data presented is not a guarantee of performance in future orchards; real world performance is highly dependent on the combination of genetics, environment and management. Interpretation of the data presented and resulting decisions are entirely the grower's responsiblity.