Pest, weed and disease management


How to manage pests, diseases and weeds in your nursery 

Use the following guidlines to know which of the following acaracides, insecticides, nematicides, molluscicides, advicides or rodenticides you can use on your plants. Naturally hydroponic systems have less pests, weeds or diseases, but they can’t be excluded.

 This is also very crucial for your mother blocks. Keeping your mother blocks healthy and disease free is the way to go. As soon as you have a infestation in your mother blocks, the rest of your propagated plants will be affected. 

 As some diseases or pests can't be seen immediately it is a good idea to have your mother blocks tested regularly.  
Please also see our blog entry about the symptoms that you have to look out for here.

Source: Natural living ideas

Control of pests 

African Bollworm
Source: Farmers weekly
Pest
Description
Pesticide
African Bollworm
Black, brownish larwa. Feeds on the fruit.
acephate
American leaf miner

Spinosad
Aphids
Green insect. Sucks the sap of plant
Canola oil
Erinose mite
Mites that feed on plant tissue
Copper oxyxhloride
Fruit fly
Flies that lay eggs in fruit. Maggots eat way to core.
Spinosad
Leaf Miner
Caterpillars, causes large brown spots
Amitraz + bifenthrin
Nematodes
Worms in soil
Dichloropropene (1,3)



Weed Control 


Crop type
Active ingredients
Garlic
Ioxynil
Garlic
Oxyfluorfen
Tomatoe
Cycloxdim
Tomatoe
Rimsulfuron


Plant diseases and how to cure them


Garlic
Disease Name
Pesticide
Botrytis rot
Azoxystobin
Downy mildew
Mandipropamid
Leaf Blight
Azoxystrobin
Leaf spot
Azoxystrobin
Pink root
Dichlorophen
Powdery
Azoxystrobin
Purple
Azoxystrobin
Rust
Tebuconazole
White bulb rot
Dichlorophen

Tomato
Disease Name
Pesticide
Bacterial spot
Copper hydroxide
Grey rot (Botrytis rot)
Iprodione
Damping off
Dichlorophen
Early Blight
Azoxystrobin
Light Blight
Mancozeb
Powdery mildew
Benomyl
Septoria leaf spot
Azoxystrobin

Basil
Disease Name
Pesticide
Downy Mildew
Actinovate
Root rot
Dichlorophen
Leaf Spot
Azoxystrobin

References: 
The Chemical control of Plant diseases by Kathy van Zyl
A guide to Crop Pest Management in South Africa, A compendium of acaracides, insectides, nematicides, molluscicides, avicides and rodenticides compiled by Kathy van Zyl
A Guide for the Control of Weeds in South Africa, by Kathy van Zyl


Cecile Bester
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