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- W848614332 abstract "A series of boll measurements were taken at two locations in 1994 on 5 different varieties in an attempt to develop a yield prediction model. Measurements were taken in strip plot variety trials at Maricopa Agricultural Center and Marana Agricultural Center over a period of approximately 2 months from peak bloom through cut -out. Measurements taken included boll weight, boll diameter, bolls /meter, plants /meter, and final yield from each specific measurement area. Stepwise linear regression resulted in a yield prediction model expressing yield as a function of heat units accumulated after planting, boll diameter or boll weight, and bolls /meter. Introduction Cotton is very responsive to both the environment and management. Throughout the entire season management decisions are made that will effect the final outcome of the crop. One such decision is when to terminate the crop and when to apply the final irrigation. Cotton grown in the desert southwest has the advantage of a longer growing season allowing producers at lower elevations the option of carrying the crop through a second fruiting cycle, and attempting to produce a top -crop to increase yield. Additional inputs are required to support a second fruiting cycle. If a producer is able to obtain a reasonable estimate of crop yield potential at the time when the decision for crop termination is to be made, it would help in deciding whether to terminate the crop or carry it through a second fruiting cycle. A reliable yield estimation technique could serve a number of useful purposes in managing cotton crops for optimum yields, efficiencies, and profits. The objective of this study was to develop a model providing yield as a function of easily measured parameters. Materials and Methods In an effort to develop a yield prediction model, data was collected in 1993 and 1994 from strip plot variety trials at two different sites (Marana, AZ, and Maricopa, AZ). In 1994, three representative varieties replicated four times, were used at both sites. Table one shows the varieties sampled at each location. Data was collected on a biweekly basis from peak bloom through cut -out (2100 -3600 heat units accumulated after planting, HUAP 86/55 °F). Data collected included; bolls /meter, boll diameter (hard green boll), boll weight (hard green boll), plants /meter," @default.
- W848614332 created "2016-06-24" @default.
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- W848614332 date "1995-03-01" @default.
- W848614332 modified "2023-09-24" @default.
- W848614332 title "Development of a Yield Projection Technique for Upland and Pima Cotton" @default.
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- W848614332 hasPublicationYear "1995" @default.
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