Past paper June 2021 Flashcards
What does the ridge of a glasshouse do?
joins both sections of the glasshouse roof
Provides strength to the roof
what is the purpose of the ridge ventilator in a glasshouse?
allows warm air to escape and provides adequate ventilation
what is the purpose of internal frameworks of a glasshouse?
provides strength to the roof and sides of the structure
what is the purpose of a gutter?
to remove and harvest rainwater
what is the purpose of a louvred ventilator?
allows cool air to enter the structure
name some cladding materials of a glasshouse
horticultural glass
twin walled polycarbonate cladding
what is the purpose of a side ventilator on a glasshouse?
it is an opening ventilator that allows cool air to enter the glasshouse
what is the purpose of polythene cladding on a polytunnel?
is is a skin with UV stabilisers - this helps extend the life of the polythene
why do we use wooden frames doors on polytunnels?
they provide ventilation in a walk-in tunnel
why is there Netlon skirts/side ventilation on polytunnels?
they provide additional ventilation
for a grower growing crops under protection, list 5 environmental factors that the grower has to consider when growing crops under protection.
air temp soil temp availability of water relative humidity carbon dioxide concentration natural light air movement
for a grower growing crops under protection, state one way these environmental factors can be manipulated: AIR TEMPERATURE
can be raised by the use of heating
can be lowered by the use of ventilation, shading or damping down.
for a grower growing crops under protection, state one way these environmental factors can be manipulated; SOIL TEMPERATURE
soil warming cables or hot water pipes in glasshouse beds/benches can be used
for a grower growing crops under protection, state one way these environmental factors can be manipulated ; AVAILABILITY OF WATER
PROVIDE IRRIGATION EITHER OVERHEAD OR AT GROUND LEVEL -
use pipes, seep/drip hoses.
Good soil texture, structure and depth will also effect water availability.
for a grower growing crops under protection, state one way these environmental factors can be manipulated; RELATIVE HUMIDITY
Damping down or the use of a humidifier will raise the humidity
Ventilation will lower the humidity in a glasshouse
for a grower growing crops under protection, state one way these environmental factors can be manipulated; CARBON DIOXIDE CONCENTRATION
Good air movement through ventilation, and enriching the atmosphere with C02 gas will increase the concentration of it in a glasshouse
for a grower growing crops under protection, state one way these environmental factors can be manipulated; NATURAL LIGHT
through design and orientation,
cleanliness of glass
lack of shading
for a grower growing crops under protection, state one way these environmental factors can be manipulated; AIR MOVEMENT
provide adequate ventilation through the layout and size of the ventilators, and plant spacing
for decorative plant pots grown in a protected environment, NAME TWO PESTS
glasshouse whitefly vine weevil Two spotted spider mite scale insect Mealy Bug
for decorative plant pots grown in a protected environment, NAME TWO DISEASES
Botrytis
Powdery mildew
Root rot
Downy Mildew
state the symptoms of damage caused by the glasshouse whitefly
distortion of growing tip
presence of honeydew and sooty mould
state the symptoms of damage caused by ; VINE WEEVIL
larvae eat roots so plant growth becomes stunted
Plant wilts and becomes chlorotic
Adults chew irregular notches in the leaf margins
state the symptoms of damage caused by ; botrytis
A fuzzy, grey mould develops on buds, flowers, soft tissue and fruits
state the symptoms of damage caused by ; powdery mildew
A dry, powdery, grey-white fungal bloom on the upper surface of leaves, shoots and flowers in spring.
This leads to red blotches on the leaf surface which then curls upwards
Describe one method of cultural control for controlling pests or diseases on decorative pot plants in a protected environment.
two spotted spider mite; increase the humidity in the protected environment.
Damo down concrete surfaces with water or mist the atmosphere.
Describe the management for one named fern suitable for display in a domestic building under each of the following headings: MAINTAINING THE OPTIMUM AERIAL ENVIRONMENT
Fern name; Adiantum raddianum
stable temp. required 15-18’c
Relative humidity of 60-80%
You can maintain this by standing the fern in a larger tray filled with moist grit or
Use of humidifiers-they atomise water directly into the air.
Provide diffused light and keep away from draughts
Describe the management for one named fern suitable for display in a domestic building under each of the following headings; Re-potting
Fern name; Adiantum raddianum
Re-pot once pot bound.
Do not over pot (put into one that is too large)
Remove damaged/diseased fronds
Tease out roots if pot bound
Growing media must be high in organic content
Place fern upright in centre of pot (no deeper than previous level)
Backfill with growing media
Firm carefully to remove air pockets
Describe the management for one named fern suitable for display in a domestic building under each of the following headings; WATERING
use rainwater ideally
or tepid water at room temp.
water from base
never let them dry out completely
Describe one method of forcing a named bulb
bulb; Narcissus ‘Tete-a-Tete’
Prepared bulbs are potted at end of sep/early oct into moistened bulb fibre.
Place container in a cold, dark, moist environment eg; cold garage (4’c) for 13 weeks.
That encourages root and flower bud development.
Place container in a well-lit location with a temp of 16’c for 4 weeks before flowering starts.
Describe one named disease of bulbs under each of the following headings; name of disease
Bulb rot.
Describe one named disease of bulbs under each of the following headings; symptoms and control method
a pinkish-white fungus appears between affected scales and on the base plate in stored bulbs.
When the bulbs are planted the foliage may yellow prematurely and not flower.
There is no chemical control available but plant resistant cultivars es; Narcissus tazetta.
Avoiding storing damaged or soft bulbs helps avoid the disease
Describe two distinct characteristics for each of four named materials that are used in the manufacture of plant containers by completing the table below; MATERIALS
Terracotta
plastic
natural stone
steel/aluminium
Describe two distinct characteristics for each of four named materials that are used in the manufacture of plant containers by completing the table below; TERRACOTTA
porous so need to water more regularly
heavy to move round, especially when wet
Describe two distinct characteristics for each of four named materials that are used in the manufacture of plant containers by completing the table below; PLASTIC
wide range of sizes, shapes and colours available
lightweight so easy to transport and handle
Describe two distinct characteristics for each of four named materials that are used in the manufacture of plant containers by completing the table below; NATURAL STONE
Difficult to clean.
Durable, so lasts a long time without needing replacing
Describe two distinct characteristics for each of four named materials that are used in the manufacture of plant containers by completing the table below; STEEL AND ALUMINIUM
marks easily so an issue in prestigious locations
£££ compared to plastic
