International Journal of Plant Protection

Rinkikumari Chauhan ¹, Abhishek Shukla ¹

Affiliations
1 Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari (Gujarat), IN

Abstract

The effects of different non-edibles oils were tested in terms of population build-up of acarid mite, T. putrescentiae at 30, 60 and 90 days interval. The mite population, 30 days after treatment was noticed in control (331.00 mites). In Neem oil treated groundnut at 0.50 ml/kg, 1.00 ml/kg and 2.00 ml/kg concentrations, and the population was 164.33, 103.33 and 85.67 mites. Further, 60 days after treatment, the maximum mite population was noticed in case of untreated control (814.87 mites). In Neem oil and eucalyptus oil treated groundnut seeds at 0.50 ml/kg, 1.00 ml/kg and 2.00 ml/kg concentration, the mite population was zero. Likewise, 90 days after mixing of different oils in groundnut seeds, the maximum mite population was recorded in control (1055.67 mites). In Neem oil treated groundnut seeds, the mite population was zero and it was also zero in case of eucalyptus oil treated groundnut seeds at all the three concentrations. Among all the non-edible oils treated groundnut seeds, the mite population was highest in alsi oil at 0.50 ml/kg concentration (867.17 mites).

Keywords

Non-Edible Oils, Population Build-Up, Groundnut, Tyrophagus putrescentiae Schrank.

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Rinkikumari Chauhan ¹, Abhishek Shukla ¹

Affiliations
1 Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari (Gujarat), IN

Abstract

The effect of various non-edible oils on developmental parameters of mite, Tyrophagus putrescentiae were studied during 2017-18 and 2018-19 at Acarology laboratory, Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat, India. The maximum percentage of adult emergence i.e. 50.33 was recorded when groundnut seeds were treated with alsi oil at 0.50 ml/kg concentration, while maximum reduction in adult emergence of acarid mite, T. putrescentiae was at 2.00 ml/kg concentration in Neem oil (10.20 %). The maximum longevity was observed at 0.50 ml/kg concentration in castor oil treated groundnut seeds (14.03 days). As the concentration increases the duration of egg stage also increases. In case of neem oil, the duration of egg stage was maximum (5.98 days) at 2.00 ml/kg followed by eucalyptus oil, castor oil, karanj oil and alsi oil with the duration of egg stage as 5.35, 4.60, 4.45 and 4.87 days, respectively at 2.00 ml/kg treatment. In Neem oil, the duration of larval stage was maximum (6.12 days) at 2.00 ml/kg concentration followed by eucalyptus oil (6.02 days), karanj oil (5.30 days), castor oil (5.25 days) alsi oil (5.20 days), respectively at 2.00 ml/kg concentration. In neem oil, the duration of nymphal stage was higher (14.08 days) at 2.00 ml/kg concentration followed by eucalyptus oil (13.68 days), castor oil (11.10 days), alsi oil (11.03 days) and karanj oil (11.93 days) at 2.00 ml/kg concentration.

Keywords

Non-edible Oils, Tyrophagus putrescentiae Schrank, Development.

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Rinkikumari Chauhan ¹, Abhishek Shukla ¹

Affiliations
1 Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari (Gujarat), IN

Abstract

The effect of non-edible oils on oviposition and hatching of acarid mite Tyrophagus putrescentiae were studied during the year 2017-18 and 2018-19 at Acarology Laboratory, Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat. All the five non-edible oils evaluated have a significant effect on the fecundity of mite, T. putrescentiae. Fecundity was markedly reduced when groundnut seeds infested with mite were mixed with Neem, eucalyptus, castor, karanj and alsi oil at the different level of concentrations of non-edible oils i.e. 0.50, 1.00 and 2.00 ml/kg. The alsi oil was least effective in reducing egg laying of mite. The discrimination quotient (DQ) was maximum 0.59 in Neem oil at 2.00 ml/kg concentration and was minimum (0.26) at 0.50 ml/kg in alsi oil treatment. Further, the per cent hatchability was maximum in the untreated groundnut seeds i.e. 96.67 per cent. In case of Neem oil at 2.00 ml/kg concentration only 64.50 per cent of eggs were hatched, while in case of alsi oil at 2.00 ml/kg concentration 89.33 per cent of eggs were hatched which were maximum as compared to all other non-edible oil treatments and less than that of untreated control.

Keywords

Non-edible Oils, Oviposition Preference, Tyrophagus putrescentiae Schrank, Groundnut.

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