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S. M. Patel ¹, G. G. Radadia ¹, H. V. Pandya ¹, S. D. Patel ¹, P. P. Dave ¹

Affiliations
1 Department of Entomology, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, NAVSARI (GUJARAT), IN

Abstract

Investigation on comparative biology of green lace wing, Chrysoperla zastrowi arabica Henry et al. (Neuroptera : Chrysopidae) was carried out in the Bio-control Laboratory, Navsari Agricultural University, Navsari, Gujarat during 2007 to 2009. The results on comparative biology of C. zastrowi arabica on two aphid species viz., Aphis gossypii Glower and Myzus persicae (Sulzer) revealed that average duration of total developmental period was 18.70 ± 0.64 and 18.93 ± 0.55 days when reared on A. gossypii, and M. persicae, respectively. The egg laying capacity of C. zastrowi arabica was recorded 754.25 ± 143.47 and 601.75 ± 89.43 eggs when reared on A. gossypii and M. persicae, respectively. Study on predatory potential of C. zastrowi arabica revealed that single larva consumed an average of 627.60 ± 42.39 and 587.5 ± 55.59 numbers (nymphs and adults) of A. gossypii and M. persicae, respectively

Keywords

Green lace wing, Comparative biology, Predatory potential.

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B. Swarnalata ¹, S. M. Patel ¹, H. V. Pandya ¹, S. D. Patel ¹

Affiliations
1 Department of Entomology, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, NAVSARI(GUJARAT), IN

Abstract

Eleven different insecticides were evaluated for their efficacy against A. craccivora at Regional Horticulture Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat during Rabi season of the year 2013-2014. The treatment imidacloprid 0.005 per cent (0.19 aphid index/plant) was found to be most effective followed by thiamethoxam 0.01 per cent (0.33 aphid index/plant). Verticillium lecanii 0.40 per cent (0.58 aphid index/plant), azadirachtin 0.002 per cent (0.62 aphid index/plant) and dimethoate 0.03 per cent (0.77 aphid index/plant) were the next in order. The highest marketable pod yield (30.37 q/ha) and maximum per cent increase in pod yield of cowpea over control (84.28 %) was recorded from the plots treated with thiamethoxam 25 WG @ 0.01 per cent.

Keywords

Bio-Efficacy, Imidacloprid, Cowpea, Aphids.

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S. A. Darandale ¹, H. V. Pandya ², S. D. Patel ¹, S. M. Patel ²

Affiliations
1 Department of Entomology, Navsari Agricultural University, NAVSARI (GUJARAT), IN
2 Department of Entomology, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, NAVSARI (GUJARAT), IN

Abstract

Investigations were carried out on population dynamics of major insect pests on niger (Guizotia abyssinica L.) at College Farm, Navsari Agricultural University, Navsari during winter 2011-12. For the purpose, 20 plants were randomly selected from an experimental area of 20×20 m. Observations were recorded at weekly interval. For recording the population of aphid (Uroleucon compositae), jassid (Amrasca biguttula biguttula), and whitefly (Bemisia tabaci), three leaves from top, middle and bottom portion of the randomly selected plants were critically observed and number of aphids, jassids and whiteflies were counted and population per leaf was worked out. The data on population of sucking pests was correlated with weather parameters viz., maximum, minimum and average temperature, morning, evening and average humidity, sunshine hours, wind velocity and evaporation. The results revealed that the incidence of sucking pests viz., aphid, Uroleucon compositae (Theobald) started from second week of December which reached peak (63.20 aphids/leaf) during first week of February. The incidence of jassid, Amrasca biguttula biguttula (Ishida) started from second week of December with a peak (8.52 jassids/ leaf) during fourth week of January and thereafter, steadily declined and finally disappeared. Whereas, whitefly, Bemisia tabaci (Gennadius) started from second week of December with a maximum level during (14.56 whiteflies/leaf) fourth week of January. Among various weather parameters viz., maximum, minimum and average temperature had highly significant negative influence on the population of all the major sucking insect pests of niger.

Keywords

Niger, Correlation, Abiotic Factors, Weather Parameters.

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K. Swathi Yadav ¹, H. V. Pandya ¹, S. M. Patel ¹, S. D. Patel ¹, M. M. Saiyad ¹

Affiliations
1 Department of Entomology, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, NAVSARI (GUJARAT), IN

Abstract

Investigations were carried out on population dynamics of major insect pests that attack cowpea [Vigna ungiculata (L.) Walp.] at Regional Horticultural Research Station, Navsari Agricultural University, Navsari during 2012-13. The results revealed that aphid and jassid population started from 3^rd week of October, reached a peak of 3.4 aphid index and 3.8 jassids/ leaf by 1^st week of December whereas whitefly population started from 3^rd week of October and reached to a peak level of 3.7 whiteflies per leaf in 4^th week of November. Cowpea pod borer population started in 2^nd week of November and reached to a peak level (2.8 larvae/plant) in 1^st week of December and thereafter, decreased gradually. Spotted pod borer population started from 1^st week of November coinciding with the flower initiation and reached to a peak of 2.8 larvae per leaf in 1st week of December. Among various weather parameters, evening relative humidity showed a significantly negative influence on population of almost all pests and minimum temperature showed a significantly negative correlation with aphid, cowpea pod borer and ladybird beetle population.

Keywords

Cowpea, Population Dynamics, Aphid, jassid, Whitefly, Pod Borer.

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R. T. Talwalkar ¹, S. M. Patel ²

Affiliations
1 Division of Biochemistry, Central Drug Research Institute, Lucknow, IN
2 Hindustan Lever Ltd,. Bombay, IN

Abstract

Cereals which form the bulk of Indian vegetarian diets, are known to be deficient in one or more essential amino acids and hence are far from being adequate protein sources. However, by supplementation with other proteins, it is possible to improve the nutritive quality of cereals.

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R. T. Talwalkar ¹, S. M. Patel ²

Affiliations
1 Division of Biochemistry, Central Drug Research Institute, Lucknow, IN
2 Hindustan Lever Ltd., Bombay,, IN

Abstract

Quality of dietary proteins, among other things, greatly influences the regeneration of proteins from various tissues. Essential amino acid make up of (he proteins determines its nutritive quality and hence the importance of supplementation of a dietary protein deficient in one or more essential amino acids with another source which is rich in these amino acids.

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