Informatics Publishing Limited

S. V. Shinde ¹, J. I. Patel ², M. S. Purohit ¹

Affiliations
1 Department of Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari 396450, Gujarat, IN
2 AICRP on Arid Zone Fruits (ARID), Dry Farming Research Station, Dantiwada Agricultural University, Sardar Krishinagar 385506, Gujarat, IN

Abstract

Natural occurrence of entomopathogenic nematode, Steinernema carpocasae (Weiser), from Lodpa village of Dantiwada Tehsil of Banaskantha District, Gujarat, India, is reported along with morphometric observations of third stage infective juveniles. The IJs were 571.92 μm long and 24.25 μm in width. The distance recorded from anterior end to excretory pore was 43.62 μm, while the distance from anterior end to nerve ring was 91.11 μm. The oesophagus length was 130.17 μm, the tail length was 52.87 μm and anal width was 15.00 μm. The a,b,c ratios recorded were 22.61, 4.49 and 10.88, respectively. The D% and E% were 27.70 and 60.70, respectively.

Keywords

Entomopathogenic Nematode, Steinernema carpocapsae, Infective Juvenile.

Full Text

   

D. R. Patel ¹, M. S. Purohit ¹

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

Abstract

Field screening of 12 genotypes of sorghum against armyworm during Rabi 2006-07 and 2007-08 showed that Nizer goti was found less susceptible to armyworm.Among different plant characters, plant height and number of internodes exhibited significant negative influence on army worm population (r=-0.288, -0.393).

Keywords

Sorghum, Army Worm,mythimna Separata, Genotypes, Physical Plant Character, Susceptible

Full Text

     

D. R. Patel ¹, M. S. Purohit ²

Affiliations
1 College of Agriculture, Navsari Agricultural University, Bharuch Gujarat
2 College of Agriculture, Navsari Agricultural University, Bharuch Gujarat, IN

Abstract

The incidence of Mythimna separata on Rabi sorghum was noticed from fourth week of November and remained up to second week of January, ranged between 0.04 to 0.15 larvae per plant. Maximum larval population was recorded during first week of December (0.15 larvae/plant). The correlation studies revealed that abiotic factor did not influence on army worm population on sorghum during Rabi season.

Keywords

Sorghum, Armyworm, Mythimna Sepatata, Correlation

Full Text

     

D. R. Patel ¹, M. S. Purohit ²

Affiliations
1 Polytechnic in Agriculture, (N.A.U.), Maktampur, Bharuch Gujarat, IN
2 Department of Entomology, N.M. College of Agriculture, Navasari Agricultural University, Navasari Gujarat, IN

Abstract

Field screening of 12 genotypes of sorghum against major insect pest during Rabi 2006-07 and 2007-08 showed that among 12 genotypes Nizergoti was found less susceptible to shoot fly, Among different plant characters, the length of leaves exhibited significant positive (r=0.272) and number of leaves was found to be significant and negative (r=-0.255) influence on incidence of shoot fly (r=-0.255).

Keywords

Sorghum, Shoot fly, Atherigona soccata, Genotypes, Physical plant characters, Susceptible

Full Text

     

D. R. Patel , M. S. Purohit ¹

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

Abstract

Studies on population dynamics of Melanaphis sacchari infesting sorghum was made during 2007-08 and 2008-09 in Kharif season at Agricultural Research Station, N.A.U., Tanchha, district Bharuch. The incidence of pest began from fourth week of August and continued upto first week of November with a peak activity in first week of November. The abiotic factors, minimum and average temperature, morning, evening and average relative humidity, rainy days and wind velocity had significant negative association, while sunshine hours had significant positive association with Melanaphis sacchari on Kharif sorghum.

Keywords

Sorghum, Aphid,melanaphis Sacchari Correlation, Weather Parameters

Full Text