ROLE OF MINERAL NUTRITION ON CONTROLLING Meloidogyne incognita INFECTING OKRA PLANT UNDER GREENHOUSE CONDITIONS | ||
| Journal of Plant Protection and Pathology | ||
| Article 5, Volume 4, Issue 8, August 2013, Pages 731-738 PDF (318.93 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jppp.2013.87476 | ||
| Author | ||
| S. B. Gad | ||
| Nematology Res. Unit, Agric. Zool. Dept, Fac. of Agric., Mansoura Univ. El-Mansoura, DK., Egypt. | ||
| Abstract | ||
| The impact of three mineral fertilizers and magnetic iron at three levels (5, 10, 15 g/plant) on Meloidogyne incognita infecting okra plant in comparsion with furadan were studied under greenhouse conditions (29 ± 3°C). Results indicated that all tested materials significantly ameliorated okra plant growth criteria and reduced tested nematode parameters as well. Zinc sulphate, magnesium sulphate and magnetic iron at the level of 15 g/ plant achieved better results than did other levels with values of 20.1, 44.3 and 46.6%; 21.8, 50.9 and 32.6%; and 39.0, 34.2 and 32.1% for plant length , total plant fresh weight and shoot dry weight, respectively, followed by that of 10g/ plant, and then the level of 5 g/ plant - except that of ferrous sulphate. A positive correlation between reduction percentage of nematode population in soil and increasing tested materials levels was evident. The level of 15g/ plant ranked first in diminishing number of nematode in soil with values of 83.9, 80.6, 82.9 and 79.4% respectively for zinc sulphate, magnesium sulphate, ferrous sulphate and magnetic iron, respectively. However, a negative correlation between levels of application of such materials and reduction percentages of galls and eggmasses was also observed except that of magnetic iron. As the level of such materials raised, reduction of galls and eggmasses number decreased except that of magnetic iron. However, the least values of these nematode criteria were recorded by zinc sulphate, magnesium sulphate, and ferrous sulphate treatments at the rate of 15g/plant. Furadan (5g/plant) gave considerable percentage increase values for plant growth parameters and ranked first in diminishing nematode criteria. | ||
| Keywords | ||
| Meloidogyne incognita; control; okra plant; furadan; mineral fertilizers; magnetic iron | ||
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