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
The three main challenges of the hydroponic farmer
Newbie to this forum and to hydroponics
Solution recipe for radishes
bibb lettuce question
My first indoor aeroponic setup
Aquaponic system ph level and nutrients
Can maincrop potatoes grow in soil-less environment?
Selling barely used 10and 8 ton ventilation systems & more
First Timer to Hydrophonics
need help with Peace Lily
NFT uneven growth
Cyanobacteria, tea not working, PLEASE HELP!
Ebb and Flow question
Seed germination questions
Green house. Nft and dutch buckets
New here
New guy, strawberry tower
It's Cyanobacteria! Questions about tea!
life of lettuce in dwc question
Northern lights bloom box
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