Pak. J. Bot., 37(4): 905-911, 2005. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
INFLUENCES OF WINTER COVER CROP RESIDUES AND TILLAGE ON COTTON LINT YIELD AND QUALITY AYDIN UNAY, ENGIN TAN*, CAHIT KONAK AND ESEN CELEN**
Abstract: The cotton growing in Turkey has monoculture system and any crop is
not grown in approximately five months between two cotton growing which
caused lower seed cotton yield, poor lint quality and early leaf senescence.
The influences of different tillage systems and winter cover crops on
cotton lint yield and quality were evaluated in Aegean Region of Turkey
during two cotton-growing seasons. In second year compared to the first
year, the dry matter yield of cover crop root residues increased by
40% in conventional tillage system and 60% in no tillage system. Similar
increases were also determined for residue organic matter yield in soil.
Dry matter and organic matter in soil harvest residues were higher in
conventional tillage system as compared to no tillage system. Among
cover crop treatments common vetch + oat and hairy vetch + oat mixtures
provided the highest dry matter and organic matter in soil harvest residues.
Cotton lint yield and quality were not affected by cover crop treatments
and tillage systems. Also, tillage by cover crop interactions was non-significant
for cotton lint yield and quality. During the observations at 50% boll
opening period of cotton, it was monitored that leaf senescence decreased
under no-tillage cotton production system in both years. Department of Agronomy, Faculty of Agriculture, University of Adnan Menderes, 09100 Aydin, Turkey.
Ministry of Agriculture and Rural Affairs, 09100 Aydin, Turkey |
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