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Articles by M. Srivastava
Total Records ( 4 ) for M. Srivastava
  S. Srivastava , V.P. Singh , R. Kumar , M. Srivastava , A. Sinha and S. Simon
  The aim of the present study was to check the efficacy of carbendazim 50% WP, antagonists and botanicals against Fusarium oxysporum f. sp. psidii associated with rhizosphere soil of guava. Guava (Psidium guajava L.) the apple of tropics is one of the most important fruit in India. The fruit of guava is a good source of vitamin C and pectin. Guava wilt is a serious disease and it recognized as a main causal organism. Isolation and identification of pathogen (Fusarium oxysporum f. sp. psidii) was carried out in the Department of Plant Protection, Allahabad Agricultural institute Deemed University, Allahabad. The radial growth of Fusarium cxysporum f. sp. psidii was fully inhibited at high concentrations like 100, 1000 and 10,000 ppm of cardendazim 50% WP whereas antagonists like Trichoderma spp. Produced maximum inhibition zone (61.91%) followed by Aspergillus niger (61.12%). The radial growth of Fusarium cxysporum f. sp. psidii was also significantly less in neem leaf extract treatment followed by Lantana leaf extract. Management of guava wilt by chemical (systemic fungicide) can be spectacular but this is relatively short-term measure. Eco-friendly management practices, i.e., use of bio-control agents and botanicals was studied in vitro which gave better results and these practices can be economical, long lasting and free from residual side effects.
  R. Kumar , A. Sinha , S. Srivastava and M. Srivastava
  The aim of the present study was to investigate the variation in soil mycobiota involved in the decomposition of Sesbania aculeata L. in soil. Decomposition of Sesbania aculeata (Dhaincha) was studied by nylon net bag technique under experimental conditions. The colonization pattern by soil inhabiting mycobiota was studied by standard methods. Among the three methods used for isolation and enumeration of fungi, dilution plate technique recorded the highest number of fungi followed by damp chamber and direct observation method. Nutrient availability and climatic conditions influenced occurrence and colonization pattern of mycobiota. Maximum fungal population was recorded in July (48.95±0.20x104 of fungi/g oven dry litter) and minimum in June (19.78±0.20x104 of fungi/g oven dry litter). The distribution of Deuteromycetous fungi was much more (74.47%) than Zygomycetes, Oomycetes and Ascomycetes. In the early stage of decomposition Mucor racemosus, Rhizopus stolonifer, Chaetomium globosum and Gliocladium roseum were found where as at the later stages of decomposition preponderance of Aspergillus candidus, Cladosporium cladosporioides, Curvularia lunata and Aspergillus luchuensis was recorded.
  A. Sinha and M. Srivastava
  In present study effect of Mungbean yellow mosaic virus on the chlorophyll, total nitrogen, protein, total phosphorous and carbohydrate content in three varieties of mungbean plants HUM -2 (Malviya Jagriti), ML-192, Pusa Baisakhi were studied. Total chlorophyll, chlorophyll a, chlorophyll b content and carbohydrate content were lower in virus infected mungbean plant varieties. Total nitrogen, protein increased and total phosphorous content was found to be high in virus infected mungbean leaves. Estimation of chlorophyll in healthy and diseased leaves of mungbean plants at 15, 30, 45, 60 and 75 days were done and absorbance were recorded by spectrophotometer at 663 and 645 nm. Total nitrogen of leaves was measured by modified microkjekldahl method and total protein content was determined by multiplying the total nitrogen content with 6.25. Total phosphorous were estimated by digestion with Tri-acid mixture and reading was taken in spectrophotometer at 470 nm. Determination of carbohydrates were done by total water soluble sugars and starch content.
  S. Chatterjee and M. Srivastava
  Early Onset Schizophrenia (EOS) is fast emerging as a significant cause of morbidity in children. Lack of systematized studies and data are a cause for concern. Multiple treatment combinations have been studied, so as to come to an acceptable conclusion, however much still remains. In this review we have tried to evaluate the existing literature, shortcomings and future directions, so as to give clarity to the phenomenon.
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