Supposeonthesametenantfarmanadditionalcrop,saysoybeans,wasaddedtotherotationafterthesharerestriction,sistentwithwealthmaximizationunderafreemarket,,iftheaddedsoybeansreceivedthesameamountofinputpercropareaasonanotherfarmwheresoybeanshadbeenintramarginal,,iftheaddedsoybeancropreceivedsufficientlyhighdensityofplanting,,wewouldfindariseinthecropareaofsoybeans,buttheaverageyieldpercropareamightriseorfall.
Suppose,however,thatthistenantfarmcontinued,regardlessofplantingdensity,,thesoildepleted,theseasonunfit,,ofcourse,ryieldperfarmpulleddowntheaggregatedaverageyieldpercroparea,therelativelylowmarginalreturnsoftenantinputswouldbeconfirmed.
Ifweareabletoidentifythemarginalcropasdescribedabove,andifalargenumberoftenantfarmerssimultaneouslychosethesamecroptoaddintotheircroprotation,theaggregatedcrophectareyieldforthiscropwouldfall,regardle,andwhati,therefore,toidentifyaclassofcropswhos,thephysicalattributesofplantingthemaresuchthattheirbei,thereexistsaclassofcropswhichhadnotbeenmonlyrotatedunderafreemarket,whereasunderthesharerestriction,,inspiteofthefactthattheymightnotactuallybeaddedatthemarginonsomefarms.
Fromtheaboveitshouldbeclearthatundermoreintensivenonlandinputmitments,theyieldpercroparea(hectare)foranintramarginalcropislikelytorise,,foramarginalcropthecrophectareyieldislikelytofall,witharelativelylargeincreaseincroparea.
[1].SinceTaiwanAgriculturalYearbookwillbecitedheavilyhereafter,,CommissionerofTaiwanProvincialDepartmentofAgricultureandForestry,thefollowinginformationisprovided:
(1).Thethree-levelcrop-reportersareresponsibleforcollectingallbasicagriculturaldata.…Thereare720townshipreporterswhomakefieldsurveysandsubmitdatacollectedtohsien(county)(county)governmenthastwocrop-reportinginspectors,alltogether44ofthem,,thecountyreporterssubmitthedatatotheProvincialDepartmentofAgricultureandForestry.
(2).…
(3).Otherdata,suchascultivatedareaandpopulation,areobtainedfromtheProvincialLandBureauandtheProvincialDepartmentofCivilAffairsrespectively.
[2].,alllandis”arable,”butwhetherornotitiseconomicallyworthwhiletocultivateissomethingelse.
[3].SeeSino-AmericanJointCommissiononRuralReconstruction,”JCRRAnnualReportsonLandReformintheRepublicofChina,”mimeographed(Taipei,1965),
[4].Cropareaissometimescalledcroppingarea,crophectares,theareaofplantation,etc.,”AnEconomicStudyofLandUseinTaichungHsienandCity,1960,”mimeographed(Taichung:ResearchInstituteofAgriculturalEconomics,ChungHsingUniversity,1961);andNien-tsingLu,AnAnalysisofFarmFamilyEconomyofOwner-OperatorsundertheLand-to-the-TillerPrograminTaiwan(Taipei:ResearchDepartmentoftheLandBankofTaiwan,1965).
[5].Theone-halfcropofvegetablemaymeanthatonlyone-halfofthehectareoflandisbeingutilized,orthattheentirehectarfnonlandinputs.
[6].Sincehorticulturalcropsare”perennial,”theyarenotrotatedlike”annual”later.
[7].Notethatwearespeakinghereofthecostofplantingonehectareofthesamecrop,,aproductionfunctionisrequired.
www.youxs.org