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Essays on the Economics of Pesticides in California
Essays on the Economics of Pesticides in California
Essays on the Economics of Pesticides in California

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자료유형  
 학위논문 서양
최종처리일시  
20260202103704
ISBN  
9798290613925
DDC  
363.7
저자명  
Zheng, Yanan.
서명/저자  
Essays on the Economics of Pesticides in California
발행사항  
[Sl] : University of California, Davis, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
271 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-01, Section: A.
주기사항  
Advisor: Goodhue, Rachael.
학위논문주기  
Thesis (Ph.D.)--University of California, Davis, 2025.
초록/해제  
요약Pesticides are used by growers to suppress pest outbreaks and enhance crop productivity. An individual grower's pest management decisions can be influenced by factors including the intensity of a pest infestation, pesticide resistance management requirements, government regulations restricting the use of certain pest control strategies and, because pests are mobile, pest management practices undertaken by neighbors. This dissertation explores the effects of various factors on individual growers' pesticide application decisions and corresponding profitability and environmental quality in the San Joaquin Valley (SJV) of California.The first two chapters explore pesticide use in cotton for lygus control in California's SJV. I have constructed a dataset that integrates field-level pesticide use, field location, and crop production data for the period from 2010 to 2019. It enables me to examine spatial-temporal-crop interactions of pesticide use across fields. To the best of my knowledge, this is the first study to do so. Based on these relationships, Chapter 1 examines the economic value of the cross-crop spillover effect of pesticide use. One of my major contributions is the differentiation of positive externalities from cross-crop benefits. Based on farmer identification information included in the pesticide use dataset, I am able to determine whether the effect is captured by the farmer applying the pesticide (cross-crop benefit) or another farmer (positive externality). I derive the reduction in cotton pesticide costs resulting from pesticide applications to nearby alfalfa and safflower fields. I find that pesticide use in alfalfa and safflower yielded average savings of $2.52 million (in 2019 US dollars) per year in cotton pesticide costs, equivalent to 32.7% of the total lygus treatment costs and 0.5% of cotton revenue in the SJV in 2019. Positive externalities accounted for $0.59 million (23.4%), while cross-crop benefits contributed the remaining $1.93 million.The data I use in Chapter 1 do not enable me to estimate the benefit of increased cotton yields due to pesticide applications to the other crops. To do so, I develop a bioeconomic system simulation model in Chapter 2. Specifically, I simulate the daily development of lygus in alfalfa, safflower, and cotton fields to investigate the economic value of the reduction in cotton yield losses due to pesticide applications on the other crops. I find that the average annual economic value due to reduced yield damage was $3.54 million (in 2019 US dollars), equivalent to 46.0% of the cost of lygus treatment and 0.8% of cotton revenue in 2019. Positive externalities accounted for $1.39 million (39.4%). The remaining $2.15 million accrued to cotton growers who grew at least one of the other two crops and applied pesticides that reduced lygus migrations into their own cotton crops. Together, the first two chapters provide a complete evaluation of how pesticide applications in these crops interact and the economic benefit captured by cotton farmers. Pesticide applications to alfalfa and safflower in the SJV generated a total annual benefit of $6.06 million for cotton production, equal to 1.5% of cotton revenue in the region in 2019.Chapter 3 explores a pesticide regulation implemented in 2015 that restricts the use of certain pesticide products during the peak ozone season (May to October) in the SJV to reduce volatile organic compound (VOC) emissions. The regulation applies to seven major crops: alfalfa, almond, citrus, cotton, grape, pistachio, and walnut. Using monthly and annual data on pesticide use from 2010 to 2018 and a regression discontinuity design, I evaluate the regulation's effectiveness in reducing peak-season VOC emissions and its impacts on hazards to other environmental quality and human health considerations, including air, water, soil, pollinator health, and health of consumers and farm applicators. The direct causal inference result suggests that field-level VOC emissions during the peak season declined by 25.8%. However, I observe year-round increases in almost all other environmental and health hazard indicators post-implementation, suggesting that the regulation reduced VOC emissions at the expense of increased hazards to other environmental and health considerations. The regulation led to a substantial increase in pest management costs. The annual increase was $388.39 million (in 2022 dollars), which is equal to 2.4% of total revenues from the regulated crops in the SJV in 2022.Collectively, this dissertation provides important insights into external impacts of growers' pest management strategies. The findings also offer valuable guidance for designing more effective policies that consider the economic costs of growers' pest-management adjustments and the multi-dimensional nature of environmental quality.
키워드  
Environmental impacts
키워드  
Pesticide use
키워드  
Volatile organic compounds
키워드  
Pollinator health
기타저자  
University of California, Davis Agricultural and Resource Economics
기본자료저록  
Dissertations Abstracts International. 87-01A.
전자적 위치 및 접속  
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MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a363.7
■1001  ▼aZheng,  Yanan.
■24510▼aEssays  on  the  Economics  of  Pesticides  in  California
■260    ▼a[Sl]▼bUniversity  of  California,  Davis▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a271  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-01,  Section:  A.
■500    ▼aAdvisor:  Goodhue,  Rachael.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Davis,  2025.
■520    ▼aPesticides  are  used  by  growers  to  suppress  pest  outbreaks  and  enhance  crop  productivity.  An  individual  grower's  pest  management  decisions  can  be  influenced  by  factors  including  the  intensity  of  a  pest  infestation,  pesticide  resistance  management  requirements,  government  regulations  restricting  the  use  of  certain  pest  control  strategies  and,  because  pests  are  mobile,  pest  management  practices  undertaken  by  neighbors.  This  dissertation  explores  the  effects  of  various  factors  on  individual  growers'  pesticide  application  decisions  and  corresponding  profitability  and  environmental  quality  in  the  San  Joaquin  Valley  (SJV)  of  California.The  first  two  chapters  explore  pesticide  use  in  cotton  for  lygus  control  in  California's  SJV.  I  have  constructed  a  dataset  that  integrates  field-level  pesticide  use,  field  location,  and  crop  production  data  for  the  period  from  2010  to  2019.  It  enables  me  to  examine  spatial-temporal-crop  interactions  of  pesticide  use  across  fields.  To  the  best  of  my  knowledge,  this  is  the  first  study  to  do  so.  Based  on  these  relationships,  Chapter  1  examines  the  economic  value  of  the  cross-crop  spillover  effect  of  pesticide  use.  One  of  my  major  contributions  is  the  differentiation  of  positive  externalities  from  cross-crop  benefits.  Based  on  farmer  identification  information  included  in  the  pesticide  use  dataset,  I  am  able  to  determine  whether  the  effect  is  captured  by  the  farmer  applying  the  pesticide  (cross-crop  benefit)  or  another  farmer  (positive  externality).  I  derive  the  reduction  in  cotton  pesticide  costs  resulting  from  pesticide  applications  to  nearby  alfalfa  and  safflower  fields.  I  find  that  pesticide  use  in  alfalfa  and  safflower  yielded  average  savings  of  $2.52  million  (in  2019  US  dollars)  per  year  in  cotton  pesticide  costs,  equivalent  to  32.7%  of  the  total  lygus  treatment  costs  and  0.5%  of  cotton  revenue  in  the  SJV  in  2019.  Positive  externalities  accounted  for  $0.59  million  (23.4%),  while  cross-crop  benefits  contributed  the  remaining  $1.93  million.The  data  I  use  in  Chapter  1  do  not  enable  me  to  estimate  the  benefit  of  increased  cotton  yields  due  to  pesticide  applications  to  the  other  crops.  To  do  so,  I  develop  a  bioeconomic  system  simulation  model  in  Chapter  2.  Specifically,  I  simulate  the  daily  development  of  lygus  in  alfalfa,  safflower,  and  cotton  fields  to  investigate  the  economic  value  of  the  reduction  in  cotton  yield  losses  due  to  pesticide  applications  on  the  other  crops.  I  find  that  the  average  annual  economic  value  due  to  reduced  yield  damage  was  $3.54  million  (in  2019  US  dollars),  equivalent  to  46.0%  of  the  cost  of  lygus  treatment  and  0.8%  of  cotton  revenue  in  2019.  Positive  externalities  accounted  for  $1.39  million  (39.4%).  The  remaining  $2.15  million  accrued  to  cotton  growers  who  grew  at  least  one  of  the  other  two  crops  and  applied  pesticides  that  reduced  lygus  migrations  into  their  own  cotton  crops.  Together,  the  first  two  chapters  provide  a  complete  evaluation  of  how  pesticide  applications  in  these  crops  interact  and  the  economic  benefit  captured  by  cotton  farmers.  Pesticide  applications  to  alfalfa  and  safflower  in  the  SJV  generated  a  total  annual  benefit  of  $6.06  million  for  cotton  production,  equal  to  1.5%  of  cotton  revenue  in  the  region  in  2019.Chapter  3  explores  a  pesticide  regulation  implemented  in  2015  that  restricts  the  use  of  certain  pesticide  products  during  the  peak  ozone  season  (May  to  October)  in  the  SJV  to  reduce  volatile  organic  compound  (VOC)  emissions.  The  regulation  applies  to  seven  major  crops:  alfalfa,  almond,  citrus,  cotton,  grape,  pistachio,  and  walnut.  Using  monthly  and  annual  data  on  pesticide  use  from  2010  to  2018  and  a  regression  discontinuity  design,  I  evaluate  the  regulation's  effectiveness  in  reducing  peak-season  VOC  emissions  and  its  impacts  on  hazards  to  other  environmental  quality  and  human  health  considerations,  including  air,  water,  soil,  pollinator  health,  and  health  of  consumers  and  farm  applicators.  The  direct  causal  inference  result  suggests  that  field-level  VOC  emissions  during  the  peak  season  declined  by  25.8%.  However,  I  observe  year-round  increases  in  almost  all  other  environmental  and  health  hazard  indicators  post-implementation,  suggesting  that the  regulation  reduced  VOC  emissions  at  the  expense  of  increased  hazards  to  other  environmental  and  health  considerations.  The  regulation  led  to  a  substantial  increase  in  pest  management  costs.  The  annual  increase  was  $388.39  million  (in  2022  dollars),  which  is  equal  to  2.4%  of  total  revenues  from  the  regulated  crops  in  the  SJV  in  2022.Collectively,  this  dissertation  provides  important  insights  into  external  impacts  of  growers'  pest  management  strategies.  The  findings  also  offer  valuable  guidance  for  designing  more  effective  policies  that  consider  the  economic  costs  of  growers'  pest-management  adjustments  and  the  multi-dimensional  nature  of  environmental  quality.
■590    ▼aSchool  code:  0029.
■653    ▼aEnvironmental  impacts
■653    ▼aPesticide  use
■653    ▼aVolatile  organic  compounds
■653    ▼aPollinator  health
■690    ▼a0503
■690    ▼a0438
■690    ▼a0501
■71020▼aUniversity  of  California,  Davis▼bAgricultural  and  Resource  Economics.
■7730  ▼tDissertations  Abstracts  International▼g87-01A.
■790    ▼a0029
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358247▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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