Cotton Irrigation Regime under Conditions of Regulated Water Deficit

  • Ivan Saldzhiev
  • Dragica Spasova

Abstract

Field trial on cotton (Perla cultivar) was carried out during the 2001-2006 period on leached vertisols under irrigation regime of sprinkling – 75 % of the fi eld moisture capacity (FMC) for the soil layer of 0-40 cm. The trial included the following variants: 1. Two irrigations of 400 mm per hectare – the fi rst one at the bud formation stage and the second – at the blooming stage; 2. Two irrigations of 400 mm – the fi rst one at the blooming stage and the second – at the boll formation stage; 3. Single irrigation of 500 mm at the blooming stage; 4. Single irrigation of 600 mm at the blooming – boll formations period; 5. Non-irrigated variant– standard. It was established that the best results were obtained at the variant with second time irrigation of 400 mm at the bud formation stage and at the blooming period. This irrigation provided 36.0 % (747 kg/ha) higher yield as compared to non-irrigated cotton. This irrigation regime realizes higher productivity per 1000 m3 per hectare irrigating water producing 934 kg/ha more seed cotton than the non-irrigated variant.

References

J. Spenser (1998), A. Perspective of Water Management for the Future. In: New Frontiers in Cotton Research – World Cotton Conference – 2, September, 6-12, 1998, Athens, Greece, 30-37.

N. G. Danalotos, S. Galanopoulou, A. Gertsis and K. Kosmodov (1998). Comparative Review of the Most Important Weather Parameters and their Impact on Cotton Yield under Greek Conditions. In: New Frontiers in Cotton Research – World Cotton Conference – 2, September, 6-12, 1998, Athens, Greece, 379-383.

B.L. McMichael, J. D. Hesketh, (1982). Field investigations of the response of cotton to water defi cits. In: Field Crops Research, 5, 1982, 319-333.

Ch. Paschalidis, E. Stavriuos, (2006). Irrigation water effi ciency and nutrients(NPK) rates effect on cotton production under the climate conditions of central Greece, In: Agricultural Science, vol. XXXIX, № 5, 18-24 (Bg).

Garrot O.J., Punymeier D., Husman S., (1988). Cotton water management using infrared thermometry. Paper - Am. Assoc. of Agr . Engineers, 2506.

Gerik T.J. et al (1996). Late season water stress in cotton. Crop science v. 36, 914-921.

Bezborodov, A. G., (1995). Saving technology for cotton irrigation in Golodnoy stepy. Uzbek, IVII chlopkovodstva – Toshkent, 1-184.

G. Nikolov (1994). Rational irrigation regime of cotton in scarcity of water. In: Proceedings of Res. Inst. For irrigation, drainage and hydraulic engineering, BG, Sofi a, vol. XXIV, 371-376.

Published
2013-05-08

Most read articles by the same author(s)

<< < 1 2 3 > >>