<?xml version="1.0" encoding="UTF-8" standalone="no"?><!--ICGIG V1.0 (06-10-2025)--><xbrli:xbrl xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2024-12-31/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/IntegratedGovernance/2024-12-31/in-capmkt/in-capmkt-ent" xmlns:in-capmkt-roles="http://www.sebi.gov.in/xbrl/IntegratedGovernance/2024-12-31/in-capmkt-roles" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2024-12-31/in-capmkt-types" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:xlink="http://www.w3.org/1999/xlink"><link:schemaRef xlink:href="in-capmkt-ent-2024-12-31.xsd" xlink:type="simple"/><xbrli:context id="MainD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/Symbol">POLYSIL</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2025-07-01</xbrli:startDate><xbrli:endDate>2025-09-30</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/Symbol">POLYSIL</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2025-09-30</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="PY_I"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/Symbol">POLYSIL</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2025-06-30</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_ImpositionOfFineOrPenalty1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/Symbol">POLYSIL</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2025-09-30</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ImpositionOfFineOrPenaltyAxis"><in-capmkt:ImpositionOfFineOrPenaltyDomain>ImpositionOfFineOrPenaltyDomain1</in-capmkt:ImpositionOfFineOrPenaltyDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="I_ImpositionOfFineOrPenalty2"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/Symbol">POLYSIL</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2025-09-30</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ImpositionOfFineOrPenaltyAxis"><in-capmkt:ImpositionOfFineOrPenaltyDomain>ImpositionOfFineOrPenaltyDomain2</in-capmkt:ImpositionOfFineOrPenaltyDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:ScripCode contextRef="MainI">000000</in-capmkt:ScripCode><in-capmkt:Symbol contextRef="MainI">POLYSIL</in-capmkt:Symbol><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE517M01028</in-capmkt:ISIN><in-capmkt:NameOfTheCompany contextRef="MainI">Polysil Irrigation Systems Limited</in-capmkt:NameOfTheCompany><in-capmkt:DateOfStartOfFinancialYear contextRef="MainI">2025-04-01</in-capmkt:DateOfStartOfFinancialYear><in-capmkt:DateOfEndOfFinancialYear contextRef="MainI">2026-03-31</in-capmkt:DateOfEndOfFinancialYear><in-capmkt:ReportingQuarter contextRef="MainI">Half Yearly</in-capmkt:ReportingQuarter><in-capmkt:DateOfEndOfReportingPeriod contextRef="MainI">2025-09-30</in-capmkt:DateOfEndOfReportingPeriod><in-capmkt:TypeOfCompany contextRef="MainD">SME</in-capmkt:TypeOfCompany><in-capmkt:WhetherPartAOfAnnexureIOfTheSEBICircularDated31December2024RelatedToComplianceReportOnCorporateGovernanceIsApplicableToTheEntity contextRef="MainD">false</in-capmkt:WhetherPartAOfAnnexureIOfTheSEBICircularDated31December2024RelatedToComplianceReportOnCorporateGovernanceIsApplicableToTheEntity><in-capmkt:ReasonForPartAOfAnnexureIOfTheSEBICircularDated31December2024RelatedToComplianceReportOnCorporateGovernanceIsNotApplicableToTheEntity contextRef="MainD">Company is Listed on EMERGE Platform of NSE. Thus, Provision relating to Corporate Governance is Not Applicable to the Company.</in-capmkt:ReasonForPartAOfAnnexureIOfTheSEBICircularDated31December2024RelatedToComplianceReportOnCorporateGovernanceIsNotApplicableToTheEntity><in-capmkt:WhetherPartBOfAnnexureIOfTheSEBICircularDated31December2024RelatedToInvestorGrievanceRedressalReportIsApplicableToTheEntity contextRef="MainD">true</in-capmkt:WhetherPartBOfAnnexureIOfTheSEBICircularDated31December2024RelatedToInvestorGrievanceRedressalReportIsApplicableToTheEntity><in-capmkt:WhetherPartCOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfAcquisitionOfSharesOrVotingRightsInUnlistedCompaniesIsApplicableToTheEntity contextRef="MainD">false</in-capmkt:WhetherPartCOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfAcquisitionOfSharesOrVotingRightsInUnlistedCompaniesIsApplicableToTheEntity><in-capmkt:ReasonForPartCOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfAcquisitionOfSharesOrVotingRightsInUnlistedCompaniesIsNotApplicableToTheEntity contextRef="MainD">Company has not acquired any Shares or Voting Rights in Unlisted Company during the Quarter ended March 31, 2025. Thus, Not Applicable to the Company.</in-capmkt:ReasonForPartCOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfAcquisitionOfSharesOrVotingRightsInUnlistedCompaniesIsNotApplicableToTheEntity><in-capmkt:WhetherPartDOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfImpositionOfFineOrPenaltyIsApplicableToTheEntity contextRef="MainD">true</in-capmkt:WhetherPartDOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfImpositionOfFineOrPenaltyIsApplicableToTheEntity><in-capmkt:WhetherPartEOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfUpdatesToOngoingTaxLitigationsOrDisputesIsApplicableToTheEntity contextRef="MainD">false</in-capmkt:WhetherPartEOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfUpdatesToOngoingTaxLitigationsOrDisputesIsApplicableToTheEntity><in-capmkt:ReasonForPartEOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfUpdatesToOngoingTaxLitigationsOrDisputesIsNotApplicableToTheEntity contextRef="MainD">There is no any Ongoing Tax Litigation or Dispute during the Quarter ended March 31, 2025. Hence, not applicable to the company.
</in-capmkt:ReasonForPartEOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfUpdatesToOngoingTaxLitigationsOrDisputesIsNotApplicableToTheEntity><in-capmkt:WhetherPartFOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfLoansOrGuaranteesOrComfortLettersOrSecuritiesEtcIsApplicableToTheEntity contextRef="MainD">false</in-capmkt:WhetherPartFOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfLoansOrGuaranteesOrComfortLettersOrSecuritiesEtcIsApplicableToTheEntity><in-capmkt:ReasonForPartFOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfLoansOrGuaranteesOrComfortLettersOrSecuritiesEtcIsNotApplicableToTheEntity contextRef="MainD">Company is Listed on EMERGE Platform of NSE. Hence, Not Applicable to the Company.</in-capmkt:ReasonForPartFOfAnnexureIOfTheSEBICircularDated31December2024RelatedToDisclosureOfLoansOrGuaranteesOrComfortLettersOrSecuritiesEtcIsNotApplicableToTheEntity><in-capmkt:IsSCORESIDAvailable contextRef="MainI">true</in-capmkt:IsSCORESIDAvailable><in-capmkt:SCORESRegistrationID contextRef="MainI">comp00915</in-capmkt:SCORESRegistrationID><in-capmkt:TypeOfSubmission contextRef="MainI">Original</in-capmkt:TypeOfSubmission><in-capmkt:NoOfInvestorComplaints contextRef="PY_I" decimals="0" unitRef="pure">0</in-capmkt:NoOfInvestorComplaints><in-capmkt:NoOfInvestorComplaintsReceivedDuringThePeriod contextRef="MainD" decimals="0" unitRef="pure">0</in-capmkt:NoOfInvestorComplaintsReceivedDuringThePeriod><in-capmkt:NoOfInvestorComplaintsDisposedOffDuringThePeriod contextRef="MainD" decimals="0" unitRef="pure">0</in-capmkt:NoOfInvestorComplaintsDisposedOffDuringThePeriod><in-capmkt:NoOfInvestorComplaints contextRef="MainI" decimals="0" unitRef="pure">0</in-capmkt:NoOfInvestorComplaints><in-capmkt:NoOfInvestorComplaintsDuringThePeriod contextRef="MainD" decimals="0" unitRef="pure">0</in-capmkt:NoOfInvestorComplaintsDuringThePeriod><in-capmkt:NameOfTheAuthority contextRef="I_ImpositionOfFineOrPenalty1">National Stock Exchange of India Limited</in-capmkt:NameOfTheAuthority><in-capmkt:NatureAndDetailsOfTheActionTakenOrOrderPassed contextRef="I_ImpositionOfFineOrPenalty1">Notice issued by the NSE Ref. No. NSE/LIST-SOP/COMB/FINES/0915 dated August 21, 2025 for non compliance under Regulation 6 of SEBI (LODR) Regulations.

The Company paid the fine of Rs 17000 plus GST @18% to the NSE.</in-capmkt:NatureAndDetailsOfTheActionTakenOrOrderPassed><in-capmkt:DateOfReceiptOfDirectionOrOrderIncludingAnyAdInterimOrInterimOrdersOrAnyOtherCommunicationFromTheAuthority contextRef="I_ImpositionOfFineOrPenalty1">2025-08-21</in-capmkt:DateOfReceiptOfDirectionOrOrderIncludingAnyAdInterimOrInterimOrdersOrAnyOtherCommunicationFromTheAuthority><in-capmkt:DetailsOfTheViolationOrContraventionCommittedOrAllegedToBeCommitted contextRef="I_ImpositionOfFineOrPenalty1">17 days delay in compliance of Regulation 6 of SEBI (LODR) Regulations.</in-capmkt:DetailsOfTheViolationOrContraventionCommittedOrAllegedToBeCommitted><in-capmkt:ImpactOnFinancialOrOperationOrOtherActivitiesOfTheListedEntityQuantifiableInMonetaryTermsToTheExtentPossible contextRef="I_ImpositionOfFineOrPenalty1">There was 17 days delay in appointment of Company Secretary and Compliance Officer during the period.</in-capmkt:ImpactOnFinancialOrOperationOrOtherActivitiesOfTheListedEntityQuantifiableInMonetaryTermsToTheExtentPossible><in-capmkt:NameOfTheAuthority contextRef="I_ImpositionOfFineOrPenalty2">National Stock Exchange of India Limited</in-capmkt:NameOfTheAuthority><in-capmkt:NatureAndDetailsOfTheActionTakenOrOrderPassed contextRef="I_ImpositionOfFineOrPenalty2">Notice issued by the NSE Ref. No. NSE/LIST-SOP/COMB/FINES/0886 dated August 14, 2025 for non compliance under Regulation 31 of SEBI (LODR) Regulations.

The Company paid the fine of Rs. 22000 plus GST @18% to the NSE.</in-capmkt:NatureAndDetailsOfTheActionTakenOrOrderPassed><in-capmkt:DateOfReceiptOfDirectionOrOrderIncludingAnyAdInterimOrInterimOrdersOrAnyOtherCommunicationFromTheAuthority contextRef="I_ImpositionOfFineOrPenalty2">2025-08-14</in-capmkt:DateOfReceiptOfDirectionOrOrderIncludingAnyAdInterimOrInterimOrdersOrAnyOtherCommunicationFromTheAuthority><in-capmkt:DetailsOfTheViolationOrContraventionCommittedOrAllegedToBeCommitted contextRef="I_ImpositionOfFineOrPenalty2">This penalty was wrongly imposed by NSE as quartely submission of Shareholding Pattern as per Regulation 31  of SEBI (LODR) Regulations was not applicable to Polysil Irrigation Systems Limited for that period.</in-capmkt:DetailsOfTheViolationOrContraventionCommittedOrAllegedToBeCommitted><in-capmkt:ImpactOnFinancialOrOperationOrOtherActivitiesOfTheListedEntityQuantifiableInMonetaryTermsToTheExtentPossible contextRef="I_ImpositionOfFineOrPenalty2">As discussed with the Exchange, the Exchange shall annul the impugned penalties and  refund the amounts already remitted against such penalties, together with applicable GST reversal, to the original mode of payment.</in-capmkt:ImpactOnFinancialOrOperationOrOtherActivitiesOfTheListedEntityQuantifiableInMonetaryTermsToTheExtentPossible></xbrli:xbrl>