BIO-ECOLOGY AND MANAGEMENT OF SERPENTINE LEAF MINER, LIRIOMYZA TRIFOLII (ORDER: DIPTERA, FAMILY: AGROMYZIDAE) IN TOMATO

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dc.contributor.advisorAnil Sood
dc.contributor.authorLALIT KALIA
dc.date.accessioned2024-07-26T09:04:57Z
dc.date.available2024-07-26T09:04:57Z
dc.date.issued2024-07-19
dc.description.abstractThe present investigations entitled “Bio-ecology and Management of Serpentine Leaf Miner, Liriomyza trifolii (Order: Diptera, Family: Agromyzidae) in Tomato” were carried out during 2022 and 2023 under laboratory and field conditions at the Dr YS Parmar University of Horticulture and Forestry, Nauni at an altitude of 1200 m asl. Survey studies on the host range of L. trifolii revealed the infestation of 39 plants belonging to 15 families. Maximum plants from the Cucurbitaceae family were found to be infested by this pest followed by Asteraceae, Solanaceae and Malvaceae family. Survey studies were conducted to record the observations on the pest incidence of L. trifolii in all the four agro-climatic zones comprising 18 different locations of Himachal Pradesh revealed that Zones 1 and 2 i.e. Nalagarh from Zone 1 showed the maximum overall pest infestation of 62.28 per cent during 2022 while Oachghat from Zone 2 showed the maximum pest infestation (56.23%) during 2023. Studies on seasonal abundance of eggs and larvae of L. trifolii on Solan Lalima and BSS 816 varieties of tomato during 2022 and 2023 revealed the fluctuating pest population with overall maximum activity from 21st to 35th standard week during 2022 and from 20th to 27th standard week during 2023. The pest incidence data were correlated with weather parameters and were found to have a significant positive correlation of eggs and larvae with temperature during 2022 and non-significant correlation during 2023. However, a negative correlation was recorded with both humidity and rainfall during both the years. Spatial distribution studies of L. trifolii on two tomato varieties viz. Solan Lalima and BSS 816 revealed that the pest was aggregately distributed on both crops throughout the cropping season. Biology and population growth parameter studies of L. trifolii on tomato revealed that the eggs were translucent white whereas, larvae were shiny yellow. The adults were yellowish-black with red eyes and black spots on the thorax region. Females were larger than males. Studies on different stages of leafminer on two tomato varieties revealed that incubation period of the leafminer on both verities was 2.4 ± 0.1 and the larval period ranged from 1.6 ± 0.1 and 1.6 ± 0.1 for I instar, 2.5 ± 0.1 days and 2.4 ± 0.1 days for II instar, 2.3 ± 0.1 and 2.5 ± 0.1 days for III instar. However, notable distinctions emerged in respect to the pupal period, with Solan Lalima showing 10.9 ± 0.2 days compared to BSS 816 as 7.6 ± 0.1 days. Female longevity for Solan Lalima was 16.7 ± 0.1 days, whereas on BSS 816 it was 19.5 ± 0.2 days. The life fertility data of L. trifolii on tomato revealed that female L. trifolii started egg laying on 21st day of the pivotal age with an average fecundity of 0.17 female eggs per day on Solan Lalima and 18th day of the pivotal age with an average fecundity of 0.70 female eggs per day on BSS 816. Studies on Phenol content estimation for tomato varieties revealed that for Solan Lalima, the phenolic content remained high across all replications with mean phenol content 0.984 AU compared to 0.606 in case of BSS 816. Four insecticides (Cyantraniliprole 10.26 % OD, Chlorantraniliprole 18.50 % SC, Thiamethoxam 25 % WG, Imidacloprid 17.80% SL) and four botanicals (NSKE, Azadirachtin 1%, Melia azedarach, NSKE + Teepol) were evaluated for their efficacy against L. trifolii during the year 2022 and 2023. The studies revealed that during the study period on both the crops Cyantraniliprole showed the maximum mortality of (70.26 %), followed by Chlorantraniliprole (64.60), Imidacloprid (59.02%), Thiamethoxam (57.33%), NSKE + Teepol (31.03%), NSKE (24.65%), Azadirachtin 1% (20.02%), Melia azedarach (17.67%).
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810212524
dc.keywordsTOMATO
dc.keywordsBIO-ECOLOGY AND MANAGEMENT OF SERPENTINE LEAF MINER
dc.keywordsLIRIOMYZA TRIFOLII (ORDER: DIPTERA
dc.keywordsFAMILY: AGROMYZIDAE) IN TOMATO
dc.language.isoEnglish
dc.pages114+vi
dc.publisherUHF Nauni
dc.subEntomology
dc.themeBio-ecology and Management of Serpentine Leaf Miner, Liriomyza trifolii (Order: Diptera, Family: Agromyzidae) in Tomato
dc.these.typePh.D
dc.titleBIO-ECOLOGY AND MANAGEMENT OF SERPENTINE LEAF MINER, LIRIOMYZA TRIFOLII (ORDER: DIPTERA, FAMILY: AGROMYZIDAE) IN TOMATO
dc.typeThesis
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