Cotton Grades and Quality Parameters as Affected by Boll Position

Osman, Neima

Cotton Grades and Quality Parameters as Affected by Boll Position

Document Type : Research papers

Author

Neima Osman

Agricultural Research Corporation, Medani, Sudan

Abstract

The objective of this study is to investigate grades and quality parameters of cotton as affected by boll position. The study was conducted for two consecutive seasons 2015/2016 and 2016/2017. Variety under consideration is Acala (Gossypium hirsutum). The Plant was divided into three zones; upper zone (A), middle zone (B) and lower zone(C). Every zone was picked separately and subjected to grading according to Sudan Classification System. Fiber tests were carried out under standard conditions (R.H 65±2%, temp. 25±2 Cº). The results showed that, seed cotton yield obtained from A-zone had better grades than B and C-zones. Grade 1 constituted 40% and 58% of the total for the two seasons, respectively. For C-zone, grade 1 equal 2% and 16% of the total for the first and second season respectively. Other quality parameters of seed index, lint index, fibre length, micronaire value, maturity ratio, and fineness were better at C-zone.

Keywords

References

Bowman, K. R. (1990). Multistage hedonic market model of cotton characteristics with separable supply and demand. Dissertation Abstracts International and Social Sciences, vol.50 No.8.

Bradow, J.M., Bauer P.J., Hinojosa, O. and Sassenrath-Cole G. (1997). Quantitation of cotton fibre-quality variations arising from boll and plant growth environment. Eur.J. Agron., 6:191-204

Ethridge, D. E. and Neeper, J.T. (1987). Producer Returns from Cotton Strength and Uniformity, Southern Journal of Agricultural Economics, 19 (1) : 91-97

Hegab, A.A., Yousif, A. E. and Mahgoub, M. A. (1985). Interrelationships of ginning-outturn and its components in two Egyptian cotton cultivars, Agricultural Research Review, 63 (6):203-208.

Wang, Y., Shu, H., Chen, B., Mcgiffen, M., Zhang, W., Xu, N. and Zhou, Z. (2009). The rate of cellulose increase is highly related to cotton fibre strength and is significantly determined by its genetic background and boll period temperature. Plant Growth Regul., 57:203-209.

Zhao, W., Wang, Y., Shu, H., Li, J. and Zhou, Z. (2012). Sowing date and boll position affected boll weight, fiber quality and fiber physiological parameters in two cotton (Gossypium hirsutum L.) cultivars, African Journal of Agricultural Research, 7 (45) : 6073- 6081.