Washington Navel Oranges Management
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Questions and Answers

Which process is specifically used to reduce moisture and weight loss in oranges?

  • Wax application (correct)
  • Drying
  • Fungicide treatment
  • High volume pressure wash
  • What percentage of the wider citrus fruit industry is primarily focused on fresh fruit?

  • 50%
  • 60%
  • 40%
  • 70% (correct)
  • Which method is NOT employed by the Mildura fruit company during the treatment of oranges?

  • Sorting by color (correct)
  • High volume pressure wash
  • Presizer
  • Blemish sorter
  • To which markets does the Washington Navel enterprise primarily target within the James Ruse community?

    <p>Fresh fruit sales</p> Signup and view all the answers

    What is a key factor influencing the orange export market to China?

    <p>Rind texture</p> Signup and view all the answers

    What is the primary reason for choosing the Washington Navel variety for the school orchard?

    <p>Nutritional value and market demand</p> Signup and view all the answers

    Which of the following is NOT a management practice for Washington Navel oranges?

    <p>Maintaining tree height</p> Signup and view all the answers

    What significant feature distinguishes the Washington Navel orange?

    <p>It has a navel-like depression</p> Signup and view all the answers

    Which pest management factor involves understanding the lifecycle and symptoms of the pest?

    <p>Major pest outline</p> Signup and view all the answers

    Which of the following is an example of sustainable management practice in the orchard?

    <p>Water conservation techniques</p> Signup and view all the answers

    What year was the Washington Navel orange variety named following its transport to the United States?

    <p>1870</p> Signup and view all the answers

    What type of origin does the Washington Navel orange have?

    <p>Mutated tree from a monastery in Brazil</p> Signup and view all the answers

    Which aspect is crucial for post-harvest treatment of Washington Navel oranges?

    <p>Technological applications for preparation</p> Signup and view all the answers

    What essential macronutrients does animal manure provide when used as an organic fertiliser?

    <p>Nitrogen, phosphorus, and potassium</p> Signup and view all the answers

    Why is organic fertiliser considered a sustainable practice?

    <p>It is environmentally friendly</p> Signup and view all the answers

    How long does organic fertiliser typically take to break down and release nutrients?

    <p>2 months to 3 months</p> Signup and view all the answers

    What is one function of the integrated barcode scanning system used by Mildura Fruit Company?

    <p>To record all packed products for marketing</p> Signup and view all the answers

    What does the touchscreen technology used by Mildura Fruit Company allow staff to do?

    <p>Enter defects and harvest damage</p> Signup and view all the answers

    What does the Colourvision system technology assess for each orange?

    <p>Sizes and grades</p> Signup and view all the answers

    What is indicated by the fruit label using Sinclair labelling heads?

    <p>Brand identification and price lookup</p> Signup and view all the answers

    What capacity does the Colourvision system have in assessing oranges?

    <p>Up to 80 oranges per second</p> Signup and view all the answers

    What is a primary advantage of using TV and radio commercials for promoting beef?

    <p>They educate people about the nutritional value of beef.</p> Signup and view all the answers

    What is a major disadvantage of TV and radio commercials?

    <p>They are very costly, with high production costs.</p> Signup and view all the answers

    Which of the following is a benefit of social media marketing compared to TV and radio commercials?

    <p>It allows for quick reaching of a large audience.</p> Signup and view all the answers

    What is the main goal of producing value-added beef products?

    <p>To increase the sale value of beef.</p> Signup and view all the answers

    Which of the following is an example of an introduced pasture type?

    <p>Ryegrass</p> Signup and view all the answers

    How do native pastures typically differ from introduced pastures?

    <p>Native pastures are adapted to local conditions and have less green material.</p> Signup and view all the answers

    What is one characteristic of native pastures?

    <p>They originate from local ecosystems.</p> Signup and view all the answers

    What is a potential drawback of using social media for product promotion?

    <p>It can be time-consuming and may lead to negative feedback.</p> Signup and view all the answers

    What is one major advantage of pure breeding?

    <p>Creates offspring specific to breed standards</p> Signup and view all the answers

    Which trait is NOT commonly evaluated in breeding programs?

    <p>Belly size</p> Signup and view all the answers

    What is heterosis in the context of cross breeding?

    <p>Tendency of a cross-bred animal to show superior qualities</p> Signup and view all the answers

    What is a potential disadvantage of cross breeding?

    <p>Need to maintain pure parent lines</p> Signup and view all the answers

    Which of the following traits would a sire with a 200-day weight of +40 likely pass to its progeny?

    <p>Weight of +20 kg</p> Signup and view all the answers

    Outcrossing involves:

    <p>Mating unrelated animals of the same breed</p> Signup and view all the answers

    Which of the following describes inbreeding?

    <p>Mating closely related individuals</p> Signup and view all the answers

    One disadvantage of pure breeding is:

    <p>Increased tendency for recessive traits</p> Signup and view all the answers

    What is a common reason for farmers to choose a sire based on its EBV?

    <p>To compare traits and predict offspring characteristics</p> Signup and view all the answers

    What is a key reason farmers engage in cross breeding?

    <p>To create offspring that outperform both parent breeds</p> Signup and view all the answers

    Study Notes

    Washington Navel Oranges

    • Washington Navel oranges were chosen for the JRAHS school orchard due to their nutritional value and commercial importance in NSW.
    • The Washington Navel orange variety originated in Brazil in 1820 from a mutated sweet orange tree with a navel-like depression at the blossom end, leading to its name.
    • The variety was named after Washington, D.C., after a cutting was sent there in 1870.
    • Washington Navel oranges are vegetatively propagated.

    Orange Management

    • Fertiliser: Organic fertilisers like Rooster Booster are used to provide nitrogen, phosphorus, and potassium, and improve soil structure and moisture retention.
    • Pest Prevention: Practices include hand-picking pests and using pesticides.
    • Pruning: Skirting removes lower branches that are in contact with the ground and promotes sun penetration.
    • Harvesting: Oranges are harvested when they are heavy for their size, have a firm, finely textured skin, and are not necessarily coloured.

    Orange Diseases and Pests

    • Major Diseases: The text focuses on a major disease but does not specify which one.
    • Major Pests: The text focuses on a major pest but doesn't specify which one.

    Sustainability

    • The text highlights the use of organic fertilisers in the JRAHS orchard as a sustainable management practice.

    Post-Harvest Treatment

    • Technology: Mildura Fruit Company (MFC) uses barcode scanning to track fruit ownership and packed products.
    • Technology: Touchscreen technology allows for defect recording, segregation for different markets, and assessment reports sent to growers.
    • Technology: Colourvision system technology grades oranges based on size, colour, shape, and blemishes. It can process up to 80 oranges per second.
    • Technology: Sinclair labelling heads are used to brand and label fruit with PLU (price lookup details).

    Marketing

    • James Ruse: The orchard sells fresh oranges to the Ruse community for $4 for 10-12 oranges.
    • Wider Industry: Washington Navel oranges are primarily sold fresh (60%) and exported to markets like China, Japan, and Malaysia.
    • Export: China is a significant market, valuing sweetness and peel/texture qualities in oranges.

    Beef Cattle

    • Black Box Model: Identifies basic inputs and outputs of a beef cattle enterprise without focusing on the specific processes.
    • Black Box Model: Accessed through organisations like BREEDPLAN and TACE (TransTasman Angus Cattle Evaluation). Its purpose is to facilitate sire selection based on desired traits.
    • Sire Trait Information: Sires' traits are recorded in a black box model, which can be used to compare and choose sires that produce calves with desired traits.
    • Calves Inheritance: Calves inherit approximately half the traits from their sire as it contributes half its genetics.

    Breeding Programs

    • Pure Breeding: Aims to produce offspring specific to breed standards (stud breeders).
    • Pure Breeding Advantages: Creates offspring with superior genotypes and predictable, consistent characteristics.
    • Pure Breeding Disadvantages: Increases the chance of undesirable recessive traits being passed down.
    • Cross-Breeding: Used for commercial beef production, mating purebred animals from different breeds.
    • Cross-Breeding Advantages: Combines desirable traits from different breeds, resulting in hybrid vigour (heterosis), and overcome breed weaknesses.
    • Cross-Breeding Disadvantages: Maintaining pure parent lines is essential; crossbreeding with crossbred animals decreases predictability and productivity.
    • Hybrid Vigour: A hybrid animal's superiority over its parents in terms of growth, fertility, and disease resistance.

    Comparing Breeding Programs

    • Pure Breeding: More predictable, but with a lower production and increased chance of unwanted recessive traits.
    • Cross-Breeding: Combines best breed traits (heterosis), requires the maintenance of pure lines.

    Types of Pure Breeding

    • Outcross: Mating unrelated animals of the same breed.
    • Inbreeding: Mating closely related individuals compared to the average of the population.
    • Linebreeding: Using a superior breeding animal for multiple generations.

    Value-Added Beef Products

    • Purpose: Processes beef scraps and offcuts into sellable products like sausages and pies.
    • Value Increase: Processes like marination, dicing, and ready-to-eat preparations enhance sale value.

    Feeding Programs

    • Native Pastures: Plant communities that originated in Australia (e.g., kangaroo grass, wallaby grass, saltbush, spinifex).
    • Native Pastures Characteristics: Often spiky, thorny, with little leaf material, and tough to chew.
    • Introduced Pastures: Plant communities introduced from overseas (e.g., kikuyu, ryegrass, clover, lucerne).
    • Introduced Pastures Characteristics: Abundant green material, palatable, and easier to chew.

    Promotion Strategies

    • TV and Radio Commercials: Effective in reaching a large audience, particularly older consumers, and informing them about the nutritional value of beef.
    • TV and Radio Commercials Disadvantages: Very costly, with 30 seconds potentially costing $30 million.
    • Social Media: Enables product promotion through accounts and sponsored posts, reaching audiences quickly.
    • Social Media Disadvantages: Time-consuming and susceptible to negative feedback, potentially damaging reputation.

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    Description

    Discover the origins and cultivation practices for Washington Navel oranges, a vital variety in NSW. This quiz covers their nutritional value, propagation methods, and effective management strategies including fertilisation, pest prevention, and pruning techniques.

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