Browsing by Author "Ali, S.S."

Now showing 1 - 9 of 9
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    Evaluation of nemacur against Meloidogyne incognita in a cardamom nursery
    (1986) Ali, S.S.
    Nemacur 400 E.C. @ 5, 10 and 15 kg a.i./ha when used as soil drench as well as foliar spray, on 2 months—old cardamom seedlings against Meloidogyne incognita, in an infested nursery significantly reduced the nematode population. There was no difference between the two methods of application. With an increase in nemacur dosage, the vigour of the seedlings increased- In general, soil drench treatment yielded better plant growth than foliar spray
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    Individual and interactive effects of VA mycorrhizal fungi and root-knot nematode, Meloidogyne incognita, on cardamom
    (1989-01) George V. Thomas; Sundararaju, P.; Ali, S.S.; Ghai, S.K.
    The effect of inoculation with six species of vcsicular-arbuscular (VA) mycorrhizal fungi individually and in different combinations with the root-knot nematode, Meloidogyne incognita, simultaneously and sequentially, on cardamom was studied at 6 and 12 months after inoculation. Compared with the control, the growth of cardamom plants was significantly improved by inoculation with VA mycorrhizal fungi, whereas nematode inoculation reduced it. The growth response induced by VA mycorrhizal fungi was similar when inoculation was made simultaneously and after nematode inoculation. VA mycorrhizal fungi significantly reduced the nematode population in roots. Colonization of roots by VA mycorrhizal fungi was also obtained when nematodes were inoculated simultaneously and prior to inoculation by VA mycorrhizal fungi. Gigaspora margarita Becker & Hall and Glomus fasciculatum (Thaxter sensu Gerd.) Gerd. & Trappe were the most effective VA mycorrhizal fungi, able to promote maximum growth response in the absence as well as in presence of root-knot nematodes.
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    Occurrence of Root-Knot Nematodes in Cardamom Plantations of Tamil Nadu
    (1982) Ali, S.S.
    A survey was carried out on the incidence of root-knot nematodes in cardamom in Tamil Nadu covering Tirunelveli, Ramanathapuram and Madurai districts. Root-knot nematodes were present in all fields of cardamom as well as in primary and secondary nurseries sampled, indicating that infestation is widespread in Tamil Nadu. Maximum population of root-knot nematodes was recorded in Rajapalayam Taluk of Ramanathapuram District. Meloidogyne incognita was recorded from Tirunelveli, Ramanathapuram and Madura! Districts white M. arenaria was recorded in Ramanathapuram District only.
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    Occurrence of Root-Knot Nematodes in Cardamom Plantations of Tamil Nadu
    (2007-02) Ali, S.S.
    A survey was carried out on the incidence of root-knot nematodes in cardamom in Tamil Nadu covering Tirunelveli, Ramanathapuram and Madurai districts. Root-knot nematodes were present in all fields of cardamom as well as in primary and secondary nurseries sampled, indicating that infestation is widespread in Tamil Nadu.
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    Preliminary Observation on the Effect of Some Systemic Nematicides and Neem Oil Cake in a Cardamom Field Infested with Root-Knot Nematodes
    (2007-02) Ali, S.S.
    A control experiment against root-knot nematodes was laid down in a cardamom field, replicated four times with nine treatments in randomised block design. Three systemic nematicides and neem oil cake were applied twice in a year. Aldicarb, Carbofuran, Phorate applied at the rate of 5 g and 10 g ai/plant, while neem oil cake at the rate of 500 g and 1000 g/plant. Maximum capsule yield was obtained from the plants applied with neem oil cake at the rate of 1000 g/plant followed by 500 g per plant. Statistically significant reduction in nematode population was observed in all treatments. In untreated plants heavy premature capsule drop was observed over treated plants and was statistically significant. The study has determined that Meloidogyne incognita reduced the yield of cardamom by 32 to 47 per cent over treated plants. By controlling the root-knot population the average yield of cardamom capsules can be enhanced by 70 per cent in the very first year.