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Development of Agro-Technology to Increase Yields of a Shy-Bearer Desi Cotton Species, Gossypium arboreum Race Cernuum in a Non-Traditional Area of Cultivation


Affiliations
1 ICAR-Central Institute for Cotton Research, Nagpur 440 010, India
 

The rapid adoption of Bt cotton hybrids has wiped out the desi cotton varieties, causing a huge shortage of coarse raw cotton needed by the surgical cotton industry. The cultivation of desi cotton, Gossypium arboreum race cernuum with big boll size, good locule retentivity and quality parameters ideal for surgical end-use, is a promising option to revive the surgical cotton industry in Central India. This communication provides the results of a study in India and elsewhere to standardize the agro-techniques - plant density and growth regulator requirements for cultivation of cernuum plants. Our results indicate that on rainfed black soils of Central India, for maximizing productivity cernuum plants must be planted at 45 × 10 cm spacing accommodating 148,148 plants/ha. Further, application of a growth retardant, mepiquat chloride @ 50 g ai/ha in two equal splits at peak squaring (55- 65 days stage) and peak flowering (75-85 days stage), ensures a more efficient translation of photosynthates to bolls, increased boll weight and further enhances yield at high planting densities.

Keywords

Agro-Technology, Growth Regulators, Mepiquat Chloride, Plant Density, Surgical Cotton.
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  • Development of Agro-Technology to Increase Yields of a Shy-Bearer Desi Cotton Species, Gossypium arboreum Race Cernuum in a Non-Traditional Area of Cultivation

Abstract Views: 445  |  PDF Views: 139

Authors

M. V. Venugopalan
ICAR-Central Institute for Cotton Research, Nagpur 440 010, India
K. R. Kranthi
ICAR-Central Institute for Cotton Research, Nagpur 440 010, India
Shubhangi Lakade
ICAR-Central Institute for Cotton Research, Nagpur 440 010, India
N. R. Tandulkar
ICAR-Central Institute for Cotton Research, Nagpur 440 010, India

Abstract


The rapid adoption of Bt cotton hybrids has wiped out the desi cotton varieties, causing a huge shortage of coarse raw cotton needed by the surgical cotton industry. The cultivation of desi cotton, Gossypium arboreum race cernuum with big boll size, good locule retentivity and quality parameters ideal for surgical end-use, is a promising option to revive the surgical cotton industry in Central India. This communication provides the results of a study in India and elsewhere to standardize the agro-techniques - plant density and growth regulator requirements for cultivation of cernuum plants. Our results indicate that on rainfed black soils of Central India, for maximizing productivity cernuum plants must be planted at 45 × 10 cm spacing accommodating 148,148 plants/ha. Further, application of a growth retardant, mepiquat chloride @ 50 g ai/ha in two equal splits at peak squaring (55- 65 days stage) and peak flowering (75-85 days stage), ensures a more efficient translation of photosynthates to bolls, increased boll weight and further enhances yield at high planting densities.

Keywords


Agro-Technology, Growth Regulators, Mepiquat Chloride, Plant Density, Surgical Cotton.

References





DOI: https://doi.org/10.18520/cs%2Fv110%2Fi4%2F692-695