Experiment code 16.3.3.57
Experiment Title Seasonal incidence of natural enemies of lac insect, Kerria lacca (Kerr.)
Research Type Survey Work
Experiment Background Lac cultivation is an important source of income for livelihood of the forest and sub-forest dwellers various parts on India. The commercial cultivation of lac is taken up in India, Myanmar, Thailand. In Gujarat lac insect is naturally found in abundance on its natural hosts viz., pipal (Ficus religiosa Linn.), palas (B. monosperma), ber (Z. mauritiana), babool (Vachellia nilotica L.) and other trees in forest area, indicating that agro climatic condition of region is well suited for its survival and abundance of lac insect. In India the lac is cultivated by the adoption of new quick growing lac hosts which has low gestation period such as Flemingia semialata and F. macrophylla. The both of host plants emerged as potential lac hosts in the country and widely grown for lac cultivation. These hosts are highly suitable for the production of good quality of kusmi lac under irrigated conditions. The biotic and abiotic stresses are the two limiting factors responsible for reduction in yield of lac crop. Among biotic factors, predators and parasitoids; while certain weather factors cause abiotic stress, limit the production of lac on different hosts. It has been estimated that on an average, up to 30 to 35 per cent of the lac cells are destroyed by natural enemies of lac insect. At times, the enemy attack can be so serious as to result in crop failure. Looking on importance of natural enemies of lac insect merits attention, so that heavy incidence of any one of the natural enemies may not become a cause of serious concern, affecting adversely the lac production. The information on natural enemies of lac insect Gujarat has not been studied so far. Therefore, this study was help to know the occurrence of the natural enemies of lac insect so that preventive measures can be taken well in advance to avoid damage.
Experiment Group Agricultural Entomology
Unit Type (02)EDUCATION UNIT
Unit (12)NAVINCHANDRA MAFATLAL COLLEGE OF AGRICULTURE (NAVSARI)
Department (259)Entomology Department, NMCA, Navsari
BudgetHead (303/12011/00)303/07/REG/02097
Objective

To study the occurrence of natural enemies of lac insect

Season Annual
Location Unit Type (02)EDUCATION UNIT
Location Unit (12)NAVINCHANDRA MAFATLAL COLLEGE OF AGRICULTURE (NAVSARI)
Location Department (259)Entomology Department, NMCA, Navsari
Plot No 00
PI Name (NAU-EMP-2015-000375)MUKESH RAMJIBHAI SIDDHAPARA
PI Email agrilmak@nau.in
PI Mobile 8758719987
Year of Approval 2022
Commencement Year 2022
Completion Year 2023
Design of Experiment

NA

Crop Spacing (cm x cm)

NA

Gross Plot (m x m) NA
Net Plot (m x m) NA
Total Experiment Area (m2) NA
Plot History Last Three Year

NA

Initial Soil Sample Analysis Report

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Initial Soil Sample Analysis Report Attachment Attachment Not Available!
Layout Plan

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Layout Plan Attachment Attachment Not Available!
Treatment

Experimental details:

The investigation was carried out in the lac cultivated on F. semialata at Department of Entomology, N. M. College of Agricultural University, Navsari. The observations on natural enemies of lac insect were recorded at fortnight interval. The data recorded on different parameters were subjected to appropriate statistical analysis.

  • To study the natural enemies of lac insect, the samples (Approx. 1ft lac encrustation) were collected randomly from five plants after removal of phunki at 15 days interval till harvest.
  • The collected samples were brought to laboratory for the further assessment of natural enemies if any. Lac insect sample was kept in plastic jar upto one month to collect the natural enemies of lac insects.
  • The emerged natural enemies if any was collected separately to avoid assimilation of species and the numbers recorded based upon morphological identification characters.

The important taxonomic characters of the collected specimens were identified by using dichotomous keys, visual observation and confirmed with the help of published literature. The unidentified specimens were sent to respective taxonomist for identification as well as the specimens will be sent for molecular identification.

Treatment Attachment Attachment Not Available!
(NAU-EMP-2015-000375) MUKESH RAMJIBHAI SIDDHAPARA agrilmak@nau.in 8758719987 13-02-2023
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(NAU-EMP-2008-000170) ABHISHEK GYANESHCHANDER SHUKLA abhishekshukla@nau.in 9724304675 01/02/2022
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