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
Basil leaves turning brown Kratky
Aquaponics
Hydroponics and Aquaponics - difficulties calibrating the pH
Kratky Method Nutrient Issue
DIY hydoponic DWC system auto top up
DWC Setup (India)
Indoor winter greens using flood and drain system with PVC pipes
cucumber leaf problems
How good a hydro grown plants?
What are your main difficulties with water in hydroponics?
My homemade deep water culture
can imagine the water running back through the pump
Smallest cubes
Light recommendation for Tomato Hydroponic setup (first timer)
what TDS level for leafy greens and herbs in indoor Tower Garden?
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 ?
hydroponicsonline.com

Lesson Nine

Biological Pest Control 9-2

Garden Pests and Their Biological Controls

Pest:

Whitefly:

Whitefly are an extreme problem for greenhouse growers, field and or-
chard crop farmers and home gardeners. The whitefly sucks large quanti-
ties of sap from the plant and secretes the sugars as honeydew. This
makes the leaves sticky and susceptible to fungal growth and rot. In a ser-


Whitefly

ious infestation, the fungus and rot associated with the honeydew can kill an entire crop in a matter of weeks. In addition, whitefly can pose a great threat to plant health because they are able to transmit many plant viruses.

A whitefly looks like a small white moth, 1/8" in length. They rest on plant leaves and will quickly fly away when disturbed.

Whitefly eggs on the
underside of
a tomato leaf


Whitefly
lie their eggs on the under side of a leaf.
Shiny, sticky leaves are signs of whitefly presence.

Biological Control:

Encarcia Formosa.

This tiny parasitic wasp lays its eggs in the larvae of
the whitefly. Parasitized larvae turn black and are eas-
ily recognized. Adult EncarsiaFormosa also feed on
honeydew and the body fluids of whitefly larvae.


Encarcia Formosa

HOME / LAST PAGE / NEXT PAGE