Abstract
Five guava seedlines of Hawaiian origin, namely GA9-37, GA12-1 6, GA10-48, GA11-56 and GA9-39 were yield tested in coastal sub-tropical south-eastern Queensland. The work demonstrated that seedling guavas produce attractive yields comparable with overseas countries. First crop mean yields were 30.72 kg/tree after 18 months in the field, demonstrating the precocious bearing of the guava. Yields for second and third cropping years were 45.6 and 77.9 kg/tree. These yields equate to 24.7, 37.2 and 61.5 tonnes ha-1 at a planting density of 805 trees ha-1. Third crop yields give the attractive gross returns of around $15,000 ha-1, at current prices paid by processors in Queensland. No differences were found between seedlines in annual yields, accumulated crop yields, fruit Number/tree, annual yield per unit cross sectional area of butt (an index of fruitfulness) and accumulated yield per unit cross sectional area of butt. Within seedline, variability masked differential response and these aspects are discussed. Fruit yields and relative increase in butt cross sectional area of butt varied with cropping year. Fruit. number per tree and yield per unit cross sectional area of butt varied with years, as did fruit number per kg (an index of fruit size). The latter also varied with seedlines. These effects were attributed to water rationing in spring of the second crop year. Preliminary selection based on fruit quality aspects of individuals identified four individuals which are undergoing detailed processing assessment, namely GA9-39R1T2, GA11-56T7, GA11-56R5T2 and GA1 1-56R5T1. Two further individuals were selected for fresh fruit market testing, namely GA11-56T3 and GA11 -56R1T1. We believe that market development rather than horticultural problems to be overcome will dictate the success of the guava as a crop for Australia, since the guava is comparatively easy to grow and manage.
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Claims 15
Claim · model-written summary
Seedling guava yields were comparable with overseas countries.
- Taxon
- guavas
Psidium guajavae0 - Outcome
- yieldse0
- Direction
- comparablee0
- Comparator
- overseas countriese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling guavas produce attractive yields comparable with overseas countries”
Claim · model-written summary
First-crop mean yield was 30.72 kg/tree after 18 months.
- Taxon
- guavasPsidium guajavat0
- Outcome
- First crop mean yieldse0
- Value
- 30.72 kg/treee0
- Qualifier
- after 18 months in the fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“First crop mean yields were 30.72 kg/tree after 18 months in the field”
t0“guavas”
Claim · model-written summary
Second-year yield was 45.6 kg/tree.
- Taxon
- guavasPsidium guajavat0
- Outcome
- Yieldse0
- Value
- 45.6e0
- Qualifier
- seconde0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields for second and third cropping years were 45.6 and 77.9 kg/tree.”
t0“guavas”
Claim · model-written summary
Third-year yield was 77.9 kg/tree.
- Taxon
- guavasPsidium guajavat0
- Outcome
- Yieldse0
- Value
- 77.9 kg/treee0
- Qualifier
- third cropping yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields for second and third cropping years were 45.6 and 77.9 kg/tree.”
t0“guavas”
Claim · model-written summary
First-crop yield equated to 24.7 tonnes ha-1 at 805 trees ha-1.
- Taxon
- guavasPsidium guajavat0
- Treatment
- planting density of 805 trees ha-1e0
- Outcome
- yieldse0
- Value
- 24.7e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These yields equate to 24.7, 37.2 and 61.5 tonnes ha-1 at a planting density of 805 trees ha-1.”
t0“guavas”
Claim · model-written summary
Second-crop yield equated to 37.2 tonnes ha-1 at 805 trees ha-1.
- Taxon
- guavasPsidium guajavat0
- Treatment
- planting density of 805 trees ha-1e0
- Outcome
- yieldse0
- Value
- 37.2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These yields equate to 24.7, 37.2 and 61.5 tonnes ha-1 at a planting density of 805 trees ha-1.”
t0“guavas”
Claim · model-written summary
Third-crop yield equated to 61.5 tonnes ha-1 at 805 trees ha-1.
- Taxon
- guavasPsidium guajavat0
- Treatment
- planting density of 805 trees ha-1e0
- Outcome
- yieldse0
- Value
- 61.5 tonnes ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These yields equate to 24.7, 37.2 and 61.5 tonnes ha-1 at a planting density of 805 trees ha-1.”
t0“guavas”
Claim · model-written summary
Third crop gross returns were around $15,000 ha-1.
- Taxon
- guavasPsidium guajavat0
- Outcome
- gross returnse0
- Value
- around $15,000 ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Third crop yields give the attractive gross returns of around $15,000 ha-1”
t0“guavas”
Claim · model-written summary
Seedlines did not differ in annual and accumulated yields, fruit number or fruitfulness indices.
- Taxon
- guavasPsidium guajavat0
- Material
- seedlinese0
- Outcome
- annual yields, accumulated crop yields, fruit Number/treee0
- Direction
- No differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No differences were found between seedlines in annual yields, accumulated crop yields, fruit Number/tree, annual yield per unit cross sectional area of butt (an index of fruitfulness) and accumulated yield per unit cross sectional area of butt.”
t0“guavas”
Claim · model-written summary
Fruit yields and relative butt-area increase varied by cropping year.
- Taxon
- guavasPsidium guajavat0
- Organ / stage
- cropping yeare0
- Outcome
- Fruit yields and relative increase in butt cross sectional areae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yields and relative increase in butt cross sectional area of butt varied with cropping year.”
t0“guavas”
Claim · model-written summary
Fruit number, butt-area-normalized yield and fruit number per kg varied by year.
- Taxon
- guavasPsidium guajavat0
- Outcome
- fruit number per kge0
- Setting
- yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit. number per tree and yield per unit cross sectional area of butt varied with years, as did fruit number per kg (an index of fruit size).”
t0“guavas”
Claim · model-written summary
Fruit number per kg varied among seedlines.
- Taxon
- guavasPsidium guajavat0
- Material
- seedlinese0
- Outcome
- fruit number per kgt1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The latter also varied with seedlines.”
t0“guavas”
t1“fruit number per kg”
Claim · model-written summary
Water rationing in spring of the second crop year was attributed as the cause of variation.
- Taxon
- guavasPsidium guajavat0
- Treatment
- water rationing in spring of the second crop yeare0
- Outcome
- effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These effects were attributed to water rationing in spring of the second crop year.”
t0“guavas”
Claim · model-written summary
Four individuals were selected for processing assessment.
- Taxon
- guavasPsidium guajavat0
- Material
- GA9-39R1T2, GA11-56T7, GA11-56R5T2 and GA1 1-56R5T1e0
- Outcome
- undergoing detailed processing assessmente0
- Value
- four individualse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“identified four individuals which are undergoing detailed processing assessment, namely GA9-39R1T2, GA11-56T7, GA11-56R5T2 and GA1 1-56R5T1”
t0“guavas”
Claim · model-written summary
Two individuals were selected for fresh-fruit market testing.
- Taxon
- guavasPsidium guajavat0
- Material
- GA11-56T3 and GA11 -56R1T1e0
- Outcome
- selected for fresh fruit market testinge0
- Value
- Twoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two further individuals were selected for fresh fruit market testing, namely GA11-56T3 and GA11 -56R1T1.”
t0“guavas”