Tomato, pepper, and cucumber were grown for consecutive years using compost from two North Carolina cities (Lexington and Edenton) and McGill Composts (CMC) sources and CMC amended with Tracoderma 382. Treatments included compost with an untreated control and Telone C-35 (Telone) with and without additional fertilizer. The objective was to evaluate compost influence on yield and pest management. Results showed significant differences between treatments and among years. Cucumber and pepper had higher total and marketable yields in 2005 than in 2004.
Although tomato yield was lower in 2005 than in 2004 it was evident that CMC+Telone had a higher marketable and total plant dry weight in both years. Two year data showed that combinations of treatments with CMC and Telone (Telone+fertilizer, CMC+Telone, CMC+T382) produced higher yield for tomato and cucumber. Composts from Lexington and Edenton produced more number 2 grade peppers, but treatments did not differ in total and marketable yield. In general compost treatments with or without amendments showed better results in crop yields than the control. Weed counts by species were determined on all plots. Pepper had the greatest number of weeds relative to cucumber and tomato. Organic amendments seem to increase the action of the compost source in several crops. Combination of treatments may depend on the particular crop.