Variety - Hidden Valley A538
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Summary
A538 is very precocious, and its good performance combined with moderately small trees size indicates that is has good potential for long term yield.
It is quite similar to A4 with a smaller kernel and smaller tree size.
| Royalty Status | PBR Provisional Protection.(See Post) |
| Early Yield/Ha | Very Precocious |
| Long Term Yield | Good Potential |
| Kernel Recovery | 43 - 46% |
| Whole Kernels | 50 - 60% |
| Kernel Wt | 2.7 - 3.2 |
| First Grade | 90 - 100% |
| Flower Season | Late Season |
| Harvest Season | Early to Mid |
| Tree Size | Compact |
| Husk Spot | Unknown |
| Sticktights | Low |
| Ethrel Response | Good |
| Abnormal Vertical (AVG) | Appears Tolerant |
| Pollenisers | Unknown |
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Performance Details
A538 variety seems to perform best in the cooler climate of Alstonville.
Observed Benefits
- A538 was one of the most precocious selections at all sites of the RVT 3.
- Possible low susceptability to Felted Coccid
Observed Faults
The variety is in very early stages of adoption, no obvious faults have been observed at this stage.
- The thin shell may be a lower barrier for some insect damage.
- Its performance at RVT 3 site Wirra Willa, an AVG potential site, was poor.
Gross Income per Hectare in Trials
RVT Series 3 (RVT3) was a multi-region trial conducted on behalf of the Australian industry. It included a total of 30 genotypes as follows
- Five industry Standards. The Standards at most sites were HAES 246, HAES 344, HAES 741, HAES 816 and HV A16. The exceptions were at Wirrawilla HAES 246 and HAES 741 were swapped with HAES 842 and HV A268; at Childers HAES 344 was not available.
- 20 industry selections
- Five Hidden Valley selections A376, A403, A422, A447 and A538 discussed in these pages.
Using the basic measure of Gross Income/Ha/Yr calculated from RVT3 data years 4 to 9 as basis for comparison, HV A538 performed as follows
- Averaged across all sites it was $1,151/Ha ahead of the Standards by year nine of the trials.
- Ahead of the Standards at all sites except Booyan, Bundy Sugar and Wirrawilla.
- Acheived two site-specific Top 5 rankings, one site-specific Top 10 ranking, and an all-sites Top 10 ranking.
| Gross Income/Ha/Yr in RVT3 Mean of Years 4 to 9, $5/kg base price | ||||||
| Gross HV 538 | Gross Standards |
Gain /Ha/Yr | Acc Gain /Ha to Y9 | Top 5 or 10? | ||
| Alstonville | $12,231 | $9,922 | $2,309 | $13,853 | Top 5 | |
| De Cortez (B1) | $8,500 | $7,908 | $592 | $3,549 | Top 10 | |
| Booyan (B2) | $10,144 | $11,018 | -$874 | -$5,244 | ||
| Wirrawilla (AVG) | $8,271 | $10,513 | -$2,242 | -$13,449 | ||
| Childers (to yr 7) | $15,586 | $14,441 | $1,145 | $6,876 | Top 5 | |
| Mean All Sites | $10,419 | $10,227 | $192 | $1,151 | Top 10 | |
These charts provide year by year detail on the table above. The Orange/Green change in background colour indicates positive cash flow on a typical costs basis.
Harvest Patterns
(Yellow sections indicate hand strip)
Our more detailed discussion of RVT Series 3 results is available here.
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Identification
Compared to HV A4, HV A538 has
- a smaller nut
- fewer leaf whorls with four leaves
Compared to HAES 246, HV A538 has
- a more leaf spines
Compared to HAES 695, HV A538 has
- flowers that are white instead of pink
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