scholarly journals Study on Seasonal incidence of Leaf webber Diaphania pulverulentalis on mulberry

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
C. T. Bhagyamma ◽  
N. Vijaya Kumari
Keyword(s):  
Andhra Pradesh ◽  
Intensity Level ◽  
Seasonal Incidence ◽  
Pests And Diseases ◽  
Leaf Roller ◽  
Silk Production ◽  
Major Pest ◽  
Bombyx Mori L ◽  
Silkworm Bombyx Mori ◽  
Extensive Damage

<div><p><em>Mulberry, the sole food plant of silkworm Bombyx mori L is prone to various pests and diseases which reduce the quality and quantity of leaf there by silk production. Among various defoliators Leaf webber (Leaf roller) Diaphania pulverulentalis is one of the major pest which causes extensive damage to the mulberry gardens. The incidence of this pest is mainly seen in the major sericulture districts of Andhra Pradesh especially in Ananatapuramu. Hence, the present study is carried out to know the seasonal incidence of the leaf webber on mulberry and its intensity level.</em></p></div>

scholarly journals STUDIES ON MULBERRY PEST (GLYPHODES PYLOALIS WALKER) AS AN ALTERNATE HOST TO THE PATHOGENS OF SILKWORM (BOMBYX MORI L.) DISEASES

2020 ◽  
Vol 21 (supplement 1) ◽  
Author(s):  
Abeera Imtiyaz ◽  
K. A. Sahaf ◽  
Shabir A. Bhat ◽  
Shaheen Gul ◽  
Iqra Rafiq ◽  
...  
Keyword(s):  
Bombyx Mori ◽  
Insect Pests ◽  
Management Strategies ◽  
Survey Study ◽  
Alternate Host ◽  
Jammu And Kashmir ◽  
Pests And Diseases ◽  
Glyphodes Pyloalis ◽  
Major Pest ◽  
Silkworm Bombyx Mori

In the present study, susceptibility of the mulberry pest G. pyloalis to the pathogens of silkworm, Bombyx mori was ascertained. The survey was carried out at the three locations viz. Mulberry farms of College of Temperate Sericulture, Mirgund and two mulberry farms of Sericulture Development Department, J&K located at Mirgund and Tulsibagh, Srinagar. The plantation is ravaged by different pests and diseases and as many as 11 major and 10 minor insect pests have been reported from Jammu and Kashmir (Sharma and Tara, 1985; Khan et al., 2004). Under temperate conditions, G. pyloalis (Walker) causes severe damage to mulberry crop and is considered as a major pest of mulberry in Jammu and Kashmir (Fotadar et al., 1998). Zeya et al. (2003) reported 20-25 percent damage to mulberry foliage in Kashmir is due to G. Pyloalis during July to October. The survey study showed high infestation of G. Pyloalis during the month of October, 2017 and 2018. The maximum infestation of 73.03% was observed at SDD Tulsi Bagh followed by 45.20% at SDD Mirgund and 32.99% at CoTS Farm. During the study various stages of G. Pyloalis were found infected with the Microsporidian and Nuclear Polyhedral Virus whereas Fungal and bacterial pathogens were not observed during the present study. The mean incidence of Microsporidian and NPV was observed as 4.22% and 5.99% percent respectively during October, 2017. In the present study, susceptibility of the mulberry pest G. Pyloalis to the pathogens of silkworm, Bombyx mori was ascertained so that management strategies are taken accordingly

scholarly journals Evaluation of some potential silkworm Bombyx mori L. genotypes during different seasons under temperate conditions

2017 ◽  
Vol 9 (2) ◽  
pp. 1264-1271
Author(s):  
Z. I. Buhroo ◽  
M. A. Malik ◽  
N. A. Ganai ◽  
A. S. Kamili ◽  
S. A. Mir
Keyword(s):  
Bombyx Mori ◽  
Climatic Conditions ◽  
Multiple Trait ◽  
Temperate Region ◽  
Evaluation Indexes ◽  
Silk Production ◽  
Cumulative Score ◽  
Different Seasons ◽  
Bombyx Mori L ◽  
Silkworm Bombyx Mori

In the present study twelve potential bivoltine silkworm Bombyx mori L. genotypes were evaluated for their performance at 25±1 0C temperature and 75±5 % relative humidity for twelve different traits during spring and summer seasons of 2012 and 2013, respectively. The data generated in respect of different traits was pooled separately, analyzed statistically and subjected to multiple trait evaluation indexes. The genotypes were ranked as per the cumulative score and the value of a particular trait in a particular genotype was compared with the ranking. Out of twelve genotypes, six genotypes viz., SKAU-R-1, SKAU-R-6, SKUAST-31, NB4D2, SH6 and SKUAST-28 were shortlisted for spring season and eight genotypes viz., SKAU-R-1, SKAU-R-6, NB4D2, SH6, SKUAST-31, CSR18, DUN6 and DUN22 for summer season. These genotypes scored higher E I values (>50) and were identified as promising genotypes hence recommended for rearing under temperate climatic conditions to push up silk productivity in the valley. Furthermore, the genotypes viz., SKAU-R-1, SKAU-R-6, SKUAST-31, NB4D2, SH6, and DUN6 performed significantly better irrespective of the seasons and scored higher E I. values (>50). Hence, these genotypes can be recommended for both seasons to boost bivoltine silk production in temperate region.

Effects of sterols on feeding and nutrition of the silkworm, Bombyx mori L.

1964 ◽  
Vol 10 (2) ◽  
pp. 225-238 ◽  
Author(s):  
Toshio Ito ◽  
Kenya Kawashima ◽  
Motoko Nakahara ◽  
Koji Nakanishi ◽  
Akira Terahara
Keyword(s):  
Bombyx Mori ◽  
Bombyx Mori L ◽  
Silkworm Bombyx Mori
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