EFFECT OF FOLIAR APPLICATION OF PHOSPHO COTTON GROWTH, YIELD AND YIELD COMPONENT | ||||
| Journal of Plant Production | ||||
| Article 3, Volume 28, Issue 3, March 2003, Page 1599-1610 PDF (751.63 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.242480 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| M. E. EI-Menshawi, | ||||
| Cotton Physiology Section, Cotton Research Center, Egypt. | ||||
| Abstract | ||||
| Two series of experiments were carried out at saxha Agricultural ~esearch Station during 2001 and 2002 seasons to study the effed of (oriar spray of Ihe aqueous filtered solution resulling from SUpelllhosphate (15.5% P20S) 5% concentration at start of flowering, start and peak of flowering, start a d end or flowering, peak and end of flowering, end of flowering and start, peak a d end of nower'lng stage on the earliness of cotton plants (Giza 86). The experimental design was randomized complete blocks with four replications. The results revealed that: strong vegetative cotton plants b~me more sensitive for phosphorus apr:!lication. Alilreatments decreased Significantly final plant height (em), leaf area (cm)2/planl and dry weight gJplant, and Increased ~umbef of open bolls per plant, seed cotton yield per feddan, seed index, earliness percentage and boll weighl, however lint percentage was not affected. Also, all treatments increased signlflCanUy total earoohydrates, phosphorus conten( In cotton leaves. However nitrogen up1ak.e an<Ilolal chlorophyll in cotton leaves were reduced. On Ihe other hand Ihose Ireatments increased significantly seed oil content. However, seed protein percentage was not affected. In conetusic:m, sPfaying with 5% concentration superphosphal thr limes at start. peak and end of flowering stage controlled the vegetative growth and aslenad 1he maturity of cotton plants. | ||||
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