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Articles by V. Manivannan
Total Records ( 2 ) for V. Manivannan
  C. Harisudan , Nisha Sapre and V. Manivannan
  Background and Objective: Sesame is an ancient important edible oil seed crop cultivated throughout the world. Excessive vegetative growth and poor source sink partitioning in sesame are the main constraint for very low yield in sesame. Study on the effect of altered crop canopy and plant growth promoters on productivity of sesame were taken up. Materials and Methods: The treatments are T1-Control, T2-Terminal nipping at 30 Days After Sowing (DAS), T3-Foliar spray of 100 ppm Salicylic Acid (SA) at 30 DAS, T4-DAP 2% spray at 30 DAS, T5-T2+T3, T6-T2+T4, T7-T2+T3+T4. The experiment was conducted in randomized block design with three replication. Results: Altering crop canopy and plant growth promoters showed significant response in terms of yield attributes and seed yield of sesame. Altering crop canopy by terminal nipping and foliar spray of 100 ppm Salicylic Acid (SA) spray followed by 2% DAP foliar spray at 30 DAS recorded higher seed yield (894 kg ha1) and B:C ratio (2.51). Conclusion: Nipping vertical growth and foliar spray of 100 ppm Salicylic Acid (SA) spray followed by 2% DAP foliar spray at 30 DAS may be recommended for higher sesame seed yield.
  M.B. Bellakki , V. Manivannan , C. Madhu and A. Sundaresan
  Multiferroic BiFeO3 and Bi0.98Y0.02FeO3 samples were prepared by a solution combustion method using oxalyldihydrazide (ODH) as a fuel. The as-prepared compounds were annealed at 600 °C for 3 h to obtain single-phase materials. The crystal structure examined by X-ray powder diffraction (XRD) indicates that the samples were of single phase and crystallize in a rhombohedral (space group, R-3c no.161) structure. Magnetic measurements were carried out on the resultant powders from 300 to ~0 K. A significant increase in magnetization was observed for Y-doped BiFeO3.
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