Search Hydroponics Online:
New Immigration Laws Pave the way for Hydroponic Farming
Powdery and Downy Mildew
Building your own Indoor Grow Room part 2
Building your own Indoor Grow Room part 1
The Benefits of Chelated Micro-nutrients
Is the pH really that important?
Getting Bigger Yields From your Hydroponic Plants
Tips for getting the most out of your nutrients
Millions of dollars lost in hydroponic tomato plant sabotage
Growing Hydroponic Raspberries, part 2
Nike consumatori che hanno maggiori probabilità acquistare
Adidas schuhe sind mit eingearbeiteten features ausgestattet
Nike einem breiten anwendungsbereich unter den sportarten
Lettuce and Germs... We've got mold
How to use 12% FeEDTA for Hougland solution ?
How You Can Cure Root Rot
Ipower 400w light with hps bulb and MH bulb
Cucumber nutrient
Kale Problem
Conversion of DWC to RDWC
Coco Peat in NFT

Lesson Nine

Biological Pest Control 9-4



Aphids inflict serious damage in various crops and
their reproductive capacity is enormous. The damage
they cause is due to secreted honeydew resulting in
contamination of fruit. Aphids are also notorious for
                             carrymg vlruses.

Green aphids

are slow moving insects,
inhabiting the undersides of
leaves. They establish dense
colonies of tiny (1/32" -1/8"),
soft bodied, pear shaped insects 
that are light green, pink, yel-
low, brown or black in color.

Biological Control:

Aphidius colemani and Aphidoletes aphidimyza

The parasitic wasp Aphidius colemani is particularly effective against some species of aphids.
Parasitised aphids form characteristic white "mummies." Aphidoletes aphidimyza is effective
on a wide range of aphid species and lays its eggs in aphid colonies. The orange larvae that 
hatch from these eggs feed voraciously on aphids.

Aphidius colemani

Aphidoletes aphidimyza