ROOT KNOT (MELOIDOGYNE INCOGNITA) ON LOOFA (LUFFA AEGYPTIACA L.): OCCURRENCE, CONTROL AND FRUITS YIELD | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 4, Volume 79, Issue 2, July 2001, Page 407-418 PDF (4.1 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2001.318604 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| ARAFA A. HILAL; ALIA A. HELMY; BASYONIA E. MOHAMED; MAHMOUD H. EL-HAMAWI | ||||
| Plant Pathology Department, Agricultural Research Center, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| Field surveys were conducted in loofa fields of seven govemorates in 1997 and 1998. Infection percentages were always increased by approximately 3-6 folds by repeatedly using the same soil, although some sanitary measures were adopted. Infection ranges were (13.1-15.3%), (40.8-47.5%) and (79.189.1%) in the plants grown for one, two and three successive seasons in the same field soil, respectively. Three nematicides and one biocide (Nemaless) singly and in combinations were evaluated against the disease. All treatments effectively reduced number of galls by 20.5-100.0%. egg-masses by 44-100% and second-stage larvae by 25-100% in the root and soil. The highest reduction was obtained with the application of Temik and Nemacur at the rate of 10 gm/plant, while the least was associated with Nemaless or Vydate. In most cases, spraying Vydate on plants grown in Nemacur or Temic-treated soil decreased their positive effectiveness against this nematode. Sufficient increases in fruit yield quantity per plant (20.00-81.25%) and improving in quality by decreasing number of short and medium fruits as well as increasing long ones by 11.11 to 191.65% were recorded. Temik and Nemacur (10 gm per plant) were the most effective treatments. while, Vydate and Nemaless were the least. Applying Vydate on loofa plants grown in Temik or Nemacur-created soil always decreased their efficacy in increasing fruits yield. | ||||
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