EFFECT OF FOLIAR APPLICATION OF VITAMINS 91 AND C ON GROWTH, YIELD AND QUALITY OF POTATO | ||||
| Journal of Plant Production | ||||
| Article 17, Volume 30, Issue 7, July 2005, Page 4085-4095 PDF (1.12 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2005.237450 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Sawsan M.H. Sarg, | ||||
| Hort. Dept. Fac. Agric. Suez Canal Univ. Ismallla, Egypt | ||||
| Abstract | ||||
| Two field experiments were carried out in summer seasons of 2003 and 2004 at the Experimental Farm of Faculty of Agriculture. Suez Canal University. Ismailia Governorate to study the effect of spraying potato plants with different concentrations of vitamins B, (thiamin) and C (L.ascorbic acid) on growth parameters, yield and its contents and chemical composition of potato under sandy soil conditions. Results indicated that plant height was significantly increased with the concentrations of 100 and 200 ppm of vito B, and 100 of viI. C. however the other concentrations of the two vitamins decreased it compared with the control. Spraying plants with each of vito 8, or vit. C increased number of stems I plant. The increments were only significant among control and 200 ppmof each vitamin. Number of leaves numberl plant. average leaf area and Iota I dry weight was increased with increasing vitamins concentrations. Vitamin 8, seemed to be more effective than vitamin C on Ihe previous growth parameters. Relative growth rate (RGR). crop growth rate (CGR). specific leaf weight (SLW), speciflc leaf area (SlA), leaf weight ratio (lWR) and net assimilation rate (NAR). all these parameters significantly increased in sprayed plants with each vit. B, or viI. C over the control. The increments were corresponded with the increase in vitamins concentration. Number of tubers! plan! and tuber weight was significantly increased with spraying plants with 200 and 300 ppm from each of vit. 8, and vit. C comparing with conirot Tuber grading showed that spraying with vitamins signfican!ly increased the weigh I of medium and large lubers and the total yield. Regarding U.S. grade one as percentage of total yield. viI. B, at 300 ppm occupied the first rank in the two seasons While control plants came in the last rank. The other treatments were in between Tuber quality had been affected by vitamins spraying. dry matter per cent, starch content as well as specific gravity were significantly increased in the tubers of the treated plants. Moreover, nitrogen % in the tubers. phosphorus % and potassium % were increased insignificantly with vitamins application. | ||||
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