Hi Gerry,
You don't say how you prepared the soil.* Did you add lots of compost?* Did you do a soil test since it was virgin soil?
You don't say if your male or female flowers are dropping off your cucumbers or if it's both.* There are several possible reasons.* Take a look here.
http://www.hort.purdue.edu/ext/sqblossomdrop.html
You don't say where you live and your location isn't in your profile, but lack of flowers on your bell peppers could be due to intense heat, too much sun and/or drought conditions.* If the heat is intense your plants may be drying out just enough to not produce flowers.* That could also explain the blossom drop in your cucs.* If the sun is too intense you might want to consider shading them a bit.* Both bell peppers and squash are very sensitive to heat.
http://www.ag.arizona.edu/gardening/...rden_woes.html
Newt
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.