vegetable production Flashcards
what different type of light is used in a green house
natural light (free)
high energy input: temperature control and lighting
LEDs
benefits of LEDs
wavelength specific
economic performance doesn’t blow and cheap
what is a light recipe
it describes how to use supplamentary light
it combines
spectrum eg deep red/blue-low blue
position top and or intelligent
light level
duration (hours)
timing (on/off)
what is the main factor of organic soils
where is it sourced from
organic matter
animal manures
compost
cover crops and green manuers
key organic fertaliser factors
maintain sustainable nutrient levels rather than scheduling nutrients to meet crop demands
key organic disease management factors
prevention!!
resistant verities, disease-free transplants, site selection, crop rotation
plant spacing
mulching - reduces soil-plant contact
destroy rogue infected plants
organic fungicides
protected crop- hoop houses/tunnels
bio fumigation
what are organic weed management systems
plant spacing
crop-rotation
cultivation prior to planting
transplants increased competitiveness
flame weeding
drip irrigation- less soil gets wet
organic herbicides
what are the organic pest management systems
habitat for beneficial insects
row covers
plant a less desirable plant nearby that attracts insects
date of planting
intercropping - help stop the build-up of harmful insects
sanitation - remove plants after harvest
autumn ploughing to expose eggs to birds and freezing over winter
organic insecticides
