Abstract:
The purpose of this study
was to see how changing plant spacings
affected cotton yield, yield components,
fibre quality traits, and physiological
parameters. In this study, six plant
spacings (no thinning, 5, 10, 15, 20, and
25 cm) were investigated. Plant density
caused significant differences in the
number of first fruiting branches, number
of bolls, ginning percentage, seed cotton
yield, fibre yield, and normalised
difference vegetative index (NDVI). Plant
height, the number of sympodial branches,
number of monopodial branches, boll
weight, seed cotton weight/boll, number of
100-seed weight, seeds/boll, canopy
temperature, chlorophyll content, leaf area,
and fibre quality properties (micronaire,
length, strength, elongation, uniformity,
short fibre index, reflectance, yellowness,
and spinning consistency index [SCI] were
non-significant. The highest values of seed
cotton yield, fibre yield, ginning
percentage, number of first fruiting
branches, and NDVI were obtained in the
no thinning and 5 cm plant spacing
applications, while the highest boll number
was obtained at 20 and 25 cm plant
spacings. In this study, physiological
parameters, such as canopy temperature,
leaf area, chlorophyll content, and fibre
technological traits, were not affected by
plant spacing. The highest seed cotton
yield, fibre yield, ginning percentage and
NDVI were obtained from no thinning and
5 cm intra-row spacing, indicating their
impact on examined characteristics.
Therefore, a yield estimation can be made
in the flowering period with the NDVI in
different plant densities in cotton.
