Field Evaluation of Broccoli Varieties Grown in Southwest Low Desert Soils

Abstract

Based on the acreage, broccoli is the third largest vegetable crop in Yuma County, after head lettuce and romaine. It generates over 36 million dollars to Yuma's economy. Efforts are continuously made by growers, seed industry and the University of Arizona outreach program to produce better crops that respond to consumer’s choice. Selection of newly adapted varieties is made based on agronomic performance as well as commercial value. Stand uniformity disease resistance, vigor, head shape and head size are among characteristics that are evaluated. The objective of this demonstration trial is to evaluate the performance of newly developed varieties grown under standard cultural practices and to provide unbiased observations to growers and the seed industry. Fourteen varieties were tested on growers' fields in Yuma County. No incidence of disease was observed among varieties tested and the overall evaluation rating was greater than 4 indicating that most of varieties tested will grow well under similar growing conditions and planting date. Significant head diameter and plant height was observed among varieties evaluated.