A variety trial was conducted in Wellton AZ, as part of the statewide upland variety testing program. It was designed to evaluate yield and yield quality parameters of several varieties provided by seed industry. The trial was made of conventional and transgenic varieties tested under growers' cultural practices. Preliminary results are subject to change when ginning and laboratory analysis is completed. The lint yield reported in this Farm Notes is based on the assumption that the turnout will be 35%. The lint results reported show three group of varieties, those that yielded 1800 lb or higher, those between 1600 and 1800 lb and the remaining group with yield below 1600 lb per acre.
Two rows of cotton were harvested and weighed using boll buggy equipped with electronic scale to determine seed and lint weight. The remaining rows were left for the field day on 9-9-03. Fifteen pound sub-samples were collected from each plot for the ginning and fiber quality analysis. In this Farm Note, we report total seed and lint yield for each variety and lint yield calculated on the assumption that the turnout is 35% that is subject to change.
Table 1. Seed and lint, lint preliminary upland cotton variety trial results--Wellton AZ site, 2003. Yield lint is calculated assuming 35% turnout
All varieties tested appeared to have reasonable yield, the lowest variety had 1587 lb per acre and the highest was 1986 lb per acre. Based on these preliminary results, varieties are grouped into 3 categories, the first group of varieties includes those with yield 1800 lb or higher, those with yield between 1600 and 1800 lb per acre and those below 1600 lb per acre.
Issued in furtherance of Cooperative Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, James A. Christenson, Director Cooperative Extension, College of Agriculture and Life Sciences, The University of Arizona.
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Information provided by:
Barry Bequette, firstname.lastname@example.org Extension Agent, Urban Horticulture
Barry Tickes, email@example.com Extension Agent, Yuma County
Mohammed Zerkoune, firstname.lastname@example.org Extension Agent, Agriculture
University of Arizona, Tucson, Arizona.
Material written September 2003.
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