Nematodes

 Methyl bromide is used to control several nematodes that may pose a threat to squash,

including sting and root knot nematode. Symptoms occurring with sting or root knot nematodes

include stunting, chlorotic appearance, wilting of the plant and galling or a stubby root system.

 Cultural control methods for nematodes include allowing land to remain fallow, rotating

to a different crop, and flooding. However, it is recommended not to plant in fields heavily

infested with nematodes (Olson and Sherman, no date).

 Chemical control methods for nematodes include Vydate L, a non-fumigant, and Telone

II and Telone C-17, a fumigant chemical (for additional information refer to the Florida

Nematode Control Guide, 1993).


Weeds

 To reduce weed populations, several weed control methods have been identified,

including crop competition, mechanical control, mulch, and herbicides. In order to increase

effectiveness, it is recommended to use at least two of these methods together. Establishment

of a good crop stand can shade the ground and reduce germination of weeds. Mechanical

control, such as light disking, can control weeds, however, additional weeds may result because

some weeds require disturbance of the soil in order to germinate. Use of mulch in conjunction

with fumigants can be effective for weed control. Plastic mulch can aid in the control of weeds

by acting as a barrier. However, nutsedge will still grow through plastic (Florida Weed Control

Guide, 1993). Table 4.11 contains a list of chemicals that are used in the production of squash.