A 600 hr course for people working, or intending to work, in the production of grapes. This course is similar to other CVHT002 horticulture certificates in its introductory (core) units, but devotes 50% of the course to topics specifically related to the production of grapes for wine, drying or as fresh fruit.

CORE UNITS
The core units comprise fifteen modules that are divided into the following sections:

• Introduction to Plants
• Plant Culture
• Soils and Nutrition
• Plant Identification and Use
• Pests, Diseases and Weeds

Students must complete and pass all of these core units.

1. Introduction to plants (40 hours)
The purpose of this study area is to explain the binomial system of plant classification and demonstrate identification of plant species through the ability of using botanical descriptions for leaf shapes and flowers.

Aims

• Describe the relevant identifying physical features of flowering ornamental plants.
• Demonstrate how to use prescribed reference books and other resources to gain relevant information.
• Dissect, draw and label two different flowers.
• Collect and identify the shapes of different leaves.
• Demonstrate how to identify between family, genus, species, variety and cultivar.

2. Plant culture (60 hours)
The purpose of this study area is to demonstrate the ability to care for plants so as to maintain optimum growth and health while considering pruning, planting, and irrigation.

Aims

• Describe how to prune different plants.
• Demonstrate how to cut wood correctly, on the correct angle and section of the stem.
• Describe how to plant a plant.
• Demonstrate an awareness of different irrigation equipment, sprinklers, pumps and turf systems available by listing their comparative advantages and disadvantages.
• Demonstrate competence in selecting an appropriate irrigation system for a garden, explaining why that system would be preferred.
• Define water pressure and flow rate and how to calculate each.
• Explain the need for regular maintenance of garden tools and equipment.
• List factors that should be considered when comparing types of machinery for use in garden maintenance.

3. Soils and plant nutrition (50 hours)
The purpose of this study area is to provide students with the skills and knowledge to identify, work with, and improve the soil condition and potting mixes, and to evaluate fertilisers for use in landscape jobs to maximize plant growth.


Aims

• Describe the soil types commonly found in plant culture in terms of texture, structure and water-holding and nutrient holding capacity.
• Describe methods of improving soil structure, infiltration rate, water holding capacity, drainage and aeration.
• List the elements essential for plant growth.
• Diagnose the major nutrient deficiencies that occur in ornamental plants and prescribe treatment practices.
• Describe soil pH and its importance in plant nutrition.
• Describe the process by which salting occurs and how to minimise its effect.
• Conduct simple inexpensive tests on three different potting mixes and report accordingly.
• Describe suitable soil mixes for container growing of five different types of plants.
• List a range of both natural and artificial fertilizers.
• Describe fertilizer programs to be used in five different situations with ornamental plants.

4. Introductory propagation (40 hours duration)
The purpose of this study area is to improve the student's understanding of propagation techniques with particular emphasis on cuttings and seeds. Other industry techniques such as grafting and budding are also explained.

Aims

• Demonstrate propagation of six (6) different plants by cuttings and three from seed.
• Construct a simple inexpensive cold frame.
• Mix and use a propagation media suited to propagating both seed and cuttings.
• Describe the method and time of year used to propagate different plant varieties.
• Describe and demonstrate the steps in preparing and executing a variety of grafts and one budding technique.
• Explain the reasons why budding or grafting are sometimes preferred propagation methods.

5. Identification and use of plants (60 hours)
The purpose of this study area is to improve the student's range of plant knowledge and the plant use in landscaping and the ornamental garden, and the appreciation of the different optimum and preferred growing conditions for different plants.

Aims

• Select plants appropriate for growing in different climates.
• Select plants appropriate to use for shade, windbreaks, as a feature, and for various aesthetic effects.
• Categorise priorities which effect selection of plants for an ornamental garden.
• Explain the differences in the way plants perform in different microclimates within the same area.
• List and analyze the situations where plants are used.

6. Pests, diseases and weeds (50 hours)
The purpose of this study area is develop the student’s ability to identify, describe and control a variety of pests, diseases and weeds in ornamental situation, and to describe safety procedures when using agricultural chemicals.

Aims

• Explain in general terms the principles of pest, disease and weed control and the ecological (biological) approach to such control.
• Explain the host pathogen environment concept.
• Describe a variety of pesticides for control of pests, diseases and weeds of ornamental plants in terms of their active constituents, application methods, timing and rates, and safety procedures.
• Photograph or prepare specimens, identify and recommend control practices for at least five insect pests of ornamental plants.
• Photograph, sketch or prepare samples, identify and recommend control practices for three non insect ornamental plant health problems (e.g. fungal, viral, bacterial).
• Describe the major ways in which diseases (fungal, viral, bacterial and nematode) affect turf, the life cycle features that cause them to become a serious problem to turf culture and the methods available for their control.
• Identify, describe and recommend treatment for three different weed problems.
• Collect, press, mount and identify a collection of ten different weeds, and recommend chemical and non-chemical treatments which may be used to control each.
• List and compare the relative advantages and disadvantages of different weed control methods

 
STREAM STUDIES
The Viticulture stream is divided into the following:

Fees do not include exam fees

There are two exams for the core and 2 for the stream

Aims

• Stream Unit Aims:
  • Describe the nature and scope of the Viticulture industry throughout the world.
  • Explain the physiology of the grape and the physiological processes of the plant.
  • Outline propagation techniques used for grapevines.
  • Describe the processes behind the improvement of grape quality (including pest and disease problems).
  • Outline the climatic and other factors that should be considered in selecting a site for a vineyard.
  • Describe commonly grown grape varieties that would and would not be suitable for growing in your area.
  • Develop a procedure to establish a vineyard.
  • Outline the harvesting and post handling procedures for grapes.
  • Outline the management procedures and work program for a vineyard.
  • Describe the type of equipment you will need to set and manage a vineyard.
  • Outline irrigation equipment and procedures required in a vineyard.
  • Explain plant nutritional requirements and outline a fertiliser program for a vineyard.
  • Outline the characteristics of pesticides and herbicides and health and safety procedures for their use.
  • Outline the supervisory structure in a vine yard.
  • Outline methods of how to increase efficiency in a vineyard.

THE GRAPE

Grapes belong to the Vitaceae family. Within this family, only the genus Vitis is of any great interest to viticulture, although four of the nine genera in this family yield grapes. The Vitis genus includes some 60 to 80 evergreen and deciduous shrubs, mainly of a climbing habit, supporting themselves by tendrils.

Almost all commonly cultivated grapevines belong to the species Vitis vinifera, although other species have some use in viticulture: for rootstocks, materials for hybridisation and, in some circumstances, for actual grape production. The commonly grown grape vine (Vitus vinifera – also known as the European Grape) originated from Asia Minor and has been carried with civilisation for thousands of years throughout history. V. vinifera was taken to Mexico by the Spaniards. English settlers took Old World grapes with them and planted them along the Atlantic seaboard.

These however failed due to the presence of the insect phylloxera, and fungus diseases like Black Rot, Downy Mildew and Powdery Mildew, as well as deleterious effect of low winter temperatures and hot humid summers.

V. vinifera requires a warm temperate climate, with minimum temperatures of -2°C while dormant,
-1°C at bud burst and -0.5°C when in full flower. The root system is deep, and as such can draw water from lower levels of the soil; hence the need for high rainfall or irrigation is only moderate. Effective irrigation methods in suitable climates can, however, improve quality and quantity of yields.

The vine does not tolerate wet soils in summer but will tolerate some wetness in winter.

When on a trellis it will tolerate wind reasonably well, but not strong gale force winds. Though sandy soils are preferred, grapes will tolerate most soils provided they are deep and well drained.

Some other grape species that are of significance to viticulture include:

Vitis amurensis

Vitis labrusca

Vitis riparia

Vitis rupestris

Vitis berlandeieri

Vitis aestivalis

Vitis cinerea

Vitis rotundifolia

The Genera Vitis and Muscadinia

Plants from both of these genera are called “grapes”. The world viticulture industry concentrates on growing cultivars of Vitis vinifera. Cultivars of other species from both genera are however grown for edible fruit in various parts of the world.

Vitis has forked tendrils, sheds its bark, has a diaphragm (continuous pith) at the nodes, and elongated clusters with berries that stick to the pedicels at maturity.

Muscadinia has tight bark that does not shed, simple tendrils that do not fork, nodes without a diaphragm, and small clusterlets with berries that detach as they mature.

V. vinifera also have intermittent tendrils, thin, smooth shiny leaves with 3, 5, or 7 lobes. The berry size varies.

Species used for grape production

V. vinifera cultivars produce over 90% of the world's grapes, whether as pure vinifera or hybridised. The most important grape species used in North America are:

V. aestivalis ‑ Norton, Delaware

V. vulpina ‑ Elvira, Clinton

V. rotundifolia ‑ Scuppernong, Eden, Muscadine

V. rupestris ‑ Rupestris St. George

V. labrusca ‑ Concord, Niagara

The Concord variety makes about 80% of the total American production. Many grape varieties have been crossbred between species and even other hybrids to produce improved characteristics of the fruit, growth habit or even disease resistance. 

Root stocks

Root stocks that exhibit resistance to phylloxera have become invaluable in the industry. Some of the American species used as root stock that have resistance are Vitus riparia, V. berlandieri, V. rupestris, V. aestivalis, V. cordifolia, and V. monticola.

Rootstocks that exhibit resistance to nematodes are also important. These include from America: Vitus rotundifolia, V. champini, V. candicans, and V. longii.

HOW MIGHT THIS COURSE HELP YOU?

This certificate does two things:
1.  In the first half, you learn about general, broad based horticulture. You learn more about soils, pest control, propagation and growing plants - beyond just viticulture (and that keeps your options for work in the future a bit broader).

BUT

2. In the second half of the course you learn about viticulture; and having the foundation you developed earlier, your specialised study of viticulture will be understood and retained more easily.

In the grand scheme of things the final outcome is a far more solid understanding of viticulture, more embedded in your long term memory, and providing an extremely solid foundation to build a career or business on.

Your direction and level of success after you complete either course will depend more upon your motivation and enthusiasm and the experience you strive for after graduation.