Academic Department • Assam Agricultural University

AINP on Agricultural Acarology, AAU, Jorhat

Constituent Department under Directorate of Research(Agri)

1 Faculty Members UG / PG Programmes 7 Achievements Contact HOD
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Academic Department

AINP on Agricultural Acarology, AAU, Jorhat

Constituent Department under Directorate of Research(Agri)
The project -AINP on Agricultural Acarology was started in AAU from 01.04.2009 with official and financial approval from ICAR. Actual functioning of the project has been started from 16.06.2009 with the placement of Dr. Sahidur Rahman as Jr. Acarologist (sanctioned post from ICAR).
Masters (PG) Courses 2 Courses
# Course No. Course Title Credit Syllabus
1 ENT-501 * INSECT MORPHOLOGY 3 (2+1)
2 ENT-508 * CONCEPT OF INTREGRATED PEST MANAGEMENT 2 (2+0)
* indicates compulsory courses.
Doctoral (Ph.D.) Courses 1 Courses
# Course No. Course Title Credit Syllabus
1 ENT-610 INTREGRATED PEST MANAGEMENT 2 (2+0)
* indicates compulsory courses.

Department Faculty Members

1 Faculty

Associated Faculty

Department Achievements & Accolades

7 Records

Crop loss or avoidable yield loss of litchi fruit due to infestation of erinose litchi mite, Aceria litchii  was estimated to be 31.11 %. This is the mean of crop loss observed during last three consecutive years study.

Fifty (50) chilli germplasms including 10 local collections were screened against the attack of Polyphagotarsonemus latus during last several years. Out of the entries only few local collections were found to be resistant against P. latus. After several years screening trial it was found that the local collections viz. Krishna, Bhekuri, Mem jolokia, Kharika, Moni and  Konjolokia were found resistant against P. latus. The HOD, PBG has been informed about these germplasms for the breeding of resistant chilli varieties.

Forty (40)
germplasms/varieties including 10 local collection of brinjal were screened for
resistance against the attack of
Tetranychus
mites and brinjal shoot and fruit borer. Results revealed that only one variety
i.e. Pusa Purple Cluster and three local collections viz. Short Pink, Kharua
Round, Kharua elongated were found to be resistant to spider mite. On the other
hand 9 germplasms/varieties were found to be tolerant to BSFB. Only three
locally collected germplasms viz. Short Pink, Kharua Round, Kharua elongated
exhibited resistant against both the mite and the insect.

 Certain eco-friendly management practices (plant oils) were evaluated against litchi mite, Aceria litchii . Among the different plant oils, neem oil (Azadirachtin 10,000 ppm) @ 3ml/l was found to be superior both in terms of mite control (78.92%) and B:C ratio of 3.08 compared to Jatropha oil , Karanj oil ,Eucalyptus oil and Castor oil.

Among the eco-friendly control measures against spider mites in brinjal, polygonum leaf extract and Azadirachtin showed on par results both in mite control (85.20% and 88.64%) and B:C ratio (2.33 and 2.00), respectively. Therefore, next to the chemical acaricide, fenazaquin either Polygonum or Azadirachtin may be considered as eco-friendly control of Tetranychus mites in brinjal crop.

Mass multiplication of the predatory mite, Neoseilus longispinosus on the prey mite Tetranychus urticae using wild amaranth as host crop was found to be best for harvesting maximum number of predatory mite after 21 days when released at 1:50 predator: prey ratio.

Biological control of Tetranychid mites in cucumber was tried using the predatory mite Neoseilus longispinosus  under polyhouse condition. Results showed more than 90% mite control was achieved when predator was released at 1:30 to 1:50 predator: prey ratio. 

Research Stations 57
Department Contact
Head of the Department (HOD)
AINP on Agricultural Acarology, AAU, Jorhat
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