Crop Production: New Zealand - BioGro
SEEDS AND PLANTING MATERIAL
- Organic seeds, seedlings and vegetative propagative materials mutbe used where available.
- If certified organic is unavailable, then seed and vegetative reproductive material may be taken from a mother plant (in the case of seeds) and a parent plant (in the case of vegetative propagating material) which have been produced under certified conversion to organic production.
CROP PROTECTION
The following are allowed for weed management:
- Biological control agents
- BioGrocertified/approved bio-dynamic peppers
- Mechanical and thermal weed control techniques, such as flame weeding
- Plastic and reflective mulches. Onlyplastic products basedonpolyethylene, polypropyleneand polycarbonatesare allowed.
Prohibited weed management approaches:
- Chemical/synthetic herbicides
- Solarisation
Permitted pest management approaches:
- Mechanical controls eg traps, barriers, sound scares, lures, etc
- Biodynamic preparations and peppers
- Biological controls eg introduction of parasites, predators, and disease organisms, diatomaceous earth
- Disease organisms egBacillus thuriengensis (Bt) products
- Homeopathic preparations
- Microbial products
- Natural acids, eg citric acid, natural vinegar
- Pheromone products
- Potassium bicarbonate
- Soft soaps (potassium based soaps)
- Salt water
- Vegetable oils
FERTILIZERS AND SOIL CONDITIONERS
Composts and vermicasts should have the following:
- May be made on the farm or purchased from BioGro certified/approved sources.
- Made on the farm must be sourced from the certified properties or ingredients selected in compliance with the BioGro Compost Guide.
- Made on the farm must heated, aerated ad mixed, matured sufficiently and have been produced in requirements.
Nitrogen:
- Application rates of compost along with other fertilizer addition must not lead to excessive levels of available nitrogen
- Nitrogen applied through the use of approved composts and foliar fertilizers, should be no more than that required for the current crop, and as a guide should not exceed 170kg nitrogen per hectare per year.
Permitted fertilizers and soil conditioners:
- Food and textile industry by-products of biodegradable material ie of microbial, plant or animal origin, free of synthetic additives.
- Biological activators
- Liquid fertilizer including vermicast liquid and compost teas
Prohibited fertilizers and soil conditioners:
- Sewage by-products
- Raw manure
- Sewage manure and composts containing human excrement iefaeces and urine
- Thermal sterilization
- Burning vegetation