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USE OF BIOCONTROL AGENTS WITH BRADYRHIZOBIUM JAPONICUM IN THE CONTROL OF ROOT-KNOT NEMATODE IN CHICK PEA

Sat, 09 Jul 1994 00:00:00 GMT

Title: USE OF BIOCONTROL AGENTS WITH BRADYRHIZOBIUM JAPONICUM IN THE CONTROL OF ROOT-KNOT NEMATODE IN CHICK PEA Authors: S. EHTESHAMUL-HAQUE; M.J. ZAKI; M. ABID Abstract: Use of biocontrol agents viz., Verticillium chlamydosporium, Paecilomyces lilacinus, Talaromyces flavus and Bradyrhizobium japonicum significantly (p<0.05) reduced root-knot infection on chickpea. Significant reduction in fall formation was produced were V. chlamydosporium was used with B. japonicum. Greater increase in fresh weight of shoot was observed where T. flavus was used with B. japonicum followed by the use of B. japonicum alone or with P. lilacinus. Use of P. lilacinus alone or T. flavus with B. japonicumalso significantly (p<0.05) increased plant height.

EVALUATION OF DIFFERENT METHODS OF APPLICATION OF PASTEURIA PENETRANS FOR THE BIOCONTROL OF ROOT-KNOT OF TOMATO (MELOIDOGYNE INCOGNITA)

Thu, 07 Jul 1994 00:00:00 GMT

Title: EVALUATION OF DIFFERENT METHODS OF APPLICATION OF PASTEURIA PENETRANS FOR THE BIOCONTROL OF ROOT-KNOT OF TOMATO (MELOIDOGYNE INCOGNITA) Authors: R. AHMAD; M.K. ABBAS; M.A. KHAN; M. INAM-UL-HAQ; N. JAVED; S.T. SAHI Abstract: Pasteuria penetrans applied at 2.5 cm soil depth proved most effective for the control of Meloidogyne incognita, followed by application at the surface and 5 cm depth. Application of P. penetrans in furrows exhibited significant control of root-knot disease followed by over all mixing and spot application as compared to control.

DESCRIPTIONS OF HELICOTYLENCHUS MELONI N. SP. AND H. STRIATUS N.SP. (NEMATODA: HOPLOLAIMIDAE) FROM PAKISTAN

Sun, 03 Jul 1994 00:00:00 GMT

Title: DESCRIPTIONS OF HELICOTYLENCHUS MELONI N. SP. AND H. STRIATUS N.SP. (NEMATODA: HOPLOLAIMIDAE) FROM PAKISTAN Authors: K. FIROZA; M.A. MAQBOOL Abstract: Specimens of two undescribed spiral nematodes, Helicotylenchus meloni n.sp. and H. striatus n.sp., collected from soil around the roots of musk melon (Cucumis melo L.) from Mirpursakro, Sindh, Pakistan, are described and illustrated. H. meloni n.sp., was recognized from all the other species of the genusHelicotylenchus on the basis of a combination of characteristics: ventrally arcuate body, hemispherical head with 3-4 distinct annules, rounded and backwards sloping stylet knobs, dorsally convex tail with a non annulated short terminal ventral peg. H. striatus n.sp., was distinguished from the other species of the genus by its hemispherical head with 4-5 distinct annules, anteriorly directed stylet knobs, tail slightly curved dorsally with a broadly rounded striated terminus having 8-15 annules on the ventral side.

DEVELOPMENT AND LIFE CYCLE OF HETERODERA SACCHARI LUC & MERNY, 1963 ON SUGARCANE

Sat, 02 Jul 1994 00:00:00 GMT

Title: DEVELOPMENT AND LIFE CYCLE OF HETERODERA SACCHARI LUC & MERNY, 1963 ON SUGARCANE Authors: SALAWU, E.O. Abstract: The development and life cycle of Heterodera sacchari Luc & Merny, 1963 were investigated under screenhouse conditions. The life cycle of the nematode from second stage juveniles to adult females was completed within 30 – 35 days at a soil temperature of 24 – 35oC. The nematode entered sugarcane roots within 24 h after inoculation with 2nd, 3rd and the 4 th moults occurring 11 – 15 days, 22 – 24 days, and 27 – 29 days, respectively, after inoculation. Profuse gelatinous matrix was produced 30 days after development of adult female whereas the first batch of embryonated eggs was deposited 33 days of nematode development in sugarcane roots. Males occurred in plant rhizosphere 40 days after entry of second-stage juveniles into the roots. Adult females body wall changed colour from milky white to light brown in 36 – 39 days and brown in 40 – 45 days.