Özet:

This study, between 2002-2003, was conducted in the field of the South East Anadolu Agricultural Research Institute, with the aim of determining the effects of different nitrogen and phosphorus doses in the ecological conditions of Diyarbakır on cotton productivity, productivity components and some early criteria. According to the trial pattern of divided parsels 3 repeatedly conducted in the study, the material was used as the Maraş 92 cotton variety Gossypium hirsutum L., nitrogen 5 0, 6, 12, 18, 24 kg/da 4 different doses of phosphorus were applied at 0, 4, 8, 12 kg/da. The study found that nitrogen applications on the first cottage time and the number of fruit branches, NxP interaction on the plant-long characteristics, nitrogen applications on the fiber and mass cotton production and NxP interaction were significantly effective, the first flowering time, the first hand mass ratio, the number of cottage branches, the number of wood branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, the number of cottage branches, and the number of cottage branches. According to this two-year study, the highest fiber and mass cotton yield was obtained from the application of N18P12 kg/day, but the most economical dose was N12P8 kg/day.

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