Morphological Traits Related to Harvest and Gin Performance

J.E. Quisenberry, R.E. Dilbeck, J.W. Laird, A.D. Brashears, and R.V. Baker


 
ABSTRACT

Ten entries were grown in large field plots to evaluate the effect of known plant traits on harvest and gin performance. Texas Marker-1 and it's isolines of Pilose (H(2)), Smooth (SM(2)), Okra Leaf (L(0)), and Frego Bract (fg) were used to evaluate leaf pubescence, leaf size, and bract size, and bract size. Lubbock Dwarf was used to evaluate earliness of maturity and the stormproof boll. A non-dehiscent boll strain of Gossypium herbaceum L. was used to measure the effect of a closed boll. Three cultivars, 'Tamcot 788', 'Coker 5110', and 'Paymaster 266', were used as commercial checks.

None of the plant traits had a significant effect on the percentage of burs or sticks in the machine stripped cotton. The closed boll trait reduced the total amount of foreign matter int he stripped seedcotton.

The amount of visible foreign matter estimated by the Shirley analyzer before and after lint cleaning was increased int he Pilose isoline and the Lubbock Dwarf strain. Lubbock Dwarf is extremely early in crop maturity and a large amount of regrowth occurred prior to final harvest. This regrowth appeared to be the primary cause of the increased amount of visible foreign material. Lint cleaning was able to remove a larger percentage of the foreign material from Lubbock Dwarf than from Pilose. This reduced foreign matter removal from the Pilose isoline suggested that lint cleaning is less effective on plant hairs than on leaf trash.

Fine dust content was estimated for each entry with the Cotton Dust Analyzer. Plant pubescence appeared to have no effect on the amount of the fine dust. The Pilose and Smooth isolines had the same amount as TM-1. The closed boll strain had the least amount of fine dust. This small amount of fine dust from the closed boll strain suggested that this strain may be useful in reducing the amount of fine dust contained in cotton delivered to the mills.



Reprinted from Proceedings of the 1983 Beltwide Cotton Production Research Conference pp. 101 - 102
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998