This study investigates the
statistical relationship between climatic variables and aspects of cotton
production (G. barbadense), and the effects of climatic factors
prevailing prior to flowering or subsequent to boll setting on flower and boll
production and retention in cotton. The effects of specific climatic factors
during both pre- and post-anthesis periods on boll production and retention are
mostly unknown. Thus, an understanding of these relationships may help physiologists
to determine control mechanisms of production in cotton plants. Evaporation,
sunshine duration, relative humidity, surface soil temperature at 1800 h, and
maximum air temperature, are the important climatic factors that significantly
affect flower and boll production. The least important variables were found to
be surface soil temperature at 0600 h and minimum temperature. There was a
negative correlation between flower and boll production and either evaporation
or sunshine duration, while that correlation with minimum relative humidity was
positive. Higher minimum relative humidity, short period of sunshine duration,
and low temperatures enhanced flower and boll formation.
 El-Zik, K.M. (1980) The Cotton Plant—Its Growth and Development. Western Cotton Prod. Conference of Summary Proceedings, Fresno, 18-21.
 Guinn, G. (1982) Causes of Square and Boll Shedding in Cotton. USDA Technical Bulletins, USDA, Washington DC.
 Hodges, H.F., Reddy, K.R., McKinion, J.M. and Reddy, V.R. (1993) Temperature Effects on Cotton. Bulletin Mississippi Agricultural and Forestry Experiment Station, No. 990, 15.
 Xiao, J.-F., Liu, Z.-G., Yu, X.-G., Zhang, J.-Y. and Duan, A.-W. (2000) Effects of Different Water Application on Lint Yield and Fiber Quality of Cotton under Drip Irrigation. Acta Gossypii Sinica, 12, 194-197.
 Barbour, M.M. and Farquhar, G.D. (2000) Relative Humidityand ABA-Induced Variation in Carbon and Oxygen Isotope Ratios of Cotton Leaves. Plant, Cell and Environment, 23, 473-485. http://dx.doi.org/10.1046/j.1365-3040.2000.00575.x
 Reddy, K.R., Hodges, H.F. and McKinion, J.M. (1995) Carbon Dioxide and Temperature Effects on Pima Cotton Growth. Agriculture Ecosystems & Environment, 54, 17-29.
 Schrader, S.M., Wise, R.R., Wacholtz, W.F., Ort, D.R. and Sharkey, T.D. (2004) Thylakoid Membrane Responses to Moderately High Leaf Temperature in Pima Cotton. Plant, Cell and Environment, 27, 725-735. http://dx.doi.org/10.1111/j.1365-3040.2004.01172.x
 Zhou, Z.-G., Meng, Y.-L., Shi, P., Shen, Y.-Q. and Jia, Z.-K. (2000) Study of the Relationship between Boll Weight in Wheat-Cotton Double Cropping and Meteorological Factors at Boll-Forming Stage. Acta Gossypii Sinica, 12, 122-126.
 Fisher, W.D. (1975) Heat Induced Sterility in Upland Cotton. Proceedings of the 27th Cotton Improvement Conference, 85.
 Zhao, Y.-Z. (1981) Climate in Liaoning and Cotton Production. Liaoning Agricultural Science, 5, 1-5.
 Reddy, K.R., Robana, R.R., Hodges, H.F., Liu, X.J. and Mckinion, J.M. (1998) Interactions of CO2 Enrichment and Temperature on Cotton Growth and Leaf Characteristics. Environmental and Experimental Botany, 39, 117-129. http://dx.doi.org/10.1016/S0098-8472(97)00028-2
 Sawan, Z.M., Li, H.N. and Mc Cuistions, W.L. (2005) Response of Flower and Boll Development to Climatic Factors before and after Anthesis in Egyptian Cotton. Climate Research, 29, 167-179. http://dx.doi.org/10.3354/cr029167
 Sawan, Z.M., Li, H.N., Mc Cuistions, W.L. and Foote, R.J. (2010) Egyptian Cotton (Gossypium barbadense) Flower and Boll Production as Affected by Climatic Factors and Soil Moisture Status. Theoretical and Applied Climatology, 99, 217-227. http://dx.doi.org/10.1007/s00704-009-0138-5
 Draper, N.R. and Smith, H. (1966) Applied Regression Analysis. John Wiley & Sons Ltd., New York, 407 p.
 SAS Institute, Inc. (1985) SAS User’s Guide: Statistics. 5th Edition, SAS Institute, Inc., Cary, 433-506.
 Human, J.J., Du Toit, D., Bezuidenhout, H.D. and De Bruyn, L.P. (1990) The Influence of Plant Water Stress on Net Photosynthesis and Yield of Sunflower (Helianthus annuus L.). Journal of Agronomy and Crop Science, 164, 231-241. http://dx.doi.org/10.1111/j.1439-037X.1990.tb00812.x
 Miller, J.K., Krieg, D.R. and Paterson, R.E. (1996) Relationship between Dryland Cotton Yields and Weather Parameters on the Southern Hig Plains. Proceedings Beltwide Cotton Conferences, 9-12 January, Nashville, 1165-1166.
 Holaday, A.S., Haigler, C.H., Srinivas, N.G., Martin, L.K. and Taylor, J.G. (1997) Alterations of Leaf Photosynthesis and Fiber Cellulose Synthesis by Cool Night Temperatures. Proceedings Beltwide Cotton Conferences, 6-10 January, New Orleans, 1435-1436.
 Oosterhuis, D.M. (1997) Effect of Temperature Extremes on Cotton Yields in Arkansas. In: Oosterhuis, D.M. and Stewart, J.M., Eds., Proceedings of the Cotton Research Meeting, Monticello, 13 February, Special Report-Agricultural Experiment Station, Division of Agriculture, University of Arkansas, 94-98.
 Mergeai, G. and Demol, J. (1991) Contribution to the Study of the Effect of Various Meteorological Factors on Production and Quality of Cotton (Gossypium hirsutum L.) Fibers. Bulletin des Recherches Agronomiqued de Gembloux, 26, 113-124.