EFFECT OF BAU-BIOFUNGICIDE AND PLANT EXTRACTS AGAINST ROOT-KNOT (Meloidogyne javanica) OF OKRA c
Date
2008-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
HAJEE MOHAMMOD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR
Abstract
Five treatments viz. BAU-Biofungicide (Trichoderma spp.), Bermuda grass
(Cynodon dactylon), Water spinach (Ipomoea aquatica) and Ivy leaf
morninglory (Ipomoea hederacea) extracts in standard concentration with a
control were tested against root-knot of Okra caused by Meloidogyne javanica
followed in seed treatment and soil drenching methods. Among the treatments,
BAU-Biofungicide and Bermuda grass leaf extract (S) gave superior result as it
had increased length of shoot and root, weight of shoot and root, number of fruit
and weight of fruit per plant correspondingly with the lowest galling incidence in
Okra in all methods. Better effect on plant growth characters with lower galling
incidence and development of the nematode was observed with Water spinach
extract (S) and Ivy leaf morninglory extract (S) compared to control. Lower
effect of plant growth character was found with extract (S) of Ivy leaf
morninglory followed by Water spinach leaf extract (S). Negative correlations
between number of galls with length of shoot and root, weight of shoot and root
and number of fruit and weight of fruit under different treatments indicated the
superior effect of the treatments as envisaged with the lower galling incidence
and the suppressive activities of the nematode.
Description
Okra (Hibiscus esculentus L.) is a common and important vegetable crop in
Bangladesh. Its tender green fruits are used as vegetables and are generally
marketed in the fresh state, but sometimes in canned or dehydrated form. It
contains high nutritional values with 1.9 g Protein, 88 IU Vitamin-A, 103 mg
Potassium, 66 mg Calcium, 6.9 mg Sodium, 1.5 mg Iron and 13 mg VitaminC/100 g edible Okra (Bose, 1986). It can be boiled and served as salad or cut
into pieces and served as soup. The roots and stems of Okra are used for
clearing the cane juice from which gur or brown sugar is prepared (Chauhan,
1972). In some places, the plants are soaked in water and the resulting
solution is used as a clarifier in the manufacture of jaggery.
Keywords
Experimental site, Pot experiment, Preparation of pot soil and potting, Collection and surface sterilization of seeds, Collection of BAU-Biofunhgicide