소장자료
LDR | 04110nam 2200517 4500 | ||
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020 | ▼a9798379712648▲ | ||
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040 | ▼aMiAaPQ▼cMiAaPQ▲ | ||
082 | 0 | ▼a595▲ | |
100 | 1 | ▼aLuttermoser, Timothy Jay.▼0(orcid)0000-0002-8785-7183▲ | |
245 | 1 | 0 | ▼aSpatial and Temporal Context-Dependence in the Push-Pull System▼h[electronic resource]▲ |
260 | ▼a[S.l.]: ▼bCornell University. ▼c2023▲ | ||
260 | 1 | ▼aAnn Arbor : ▼bProQuest Dissertations & Theses, ▼c2023▲ | |
300 | ▼a1 online resource(110 p.)▲ | ||
500 | ▼aSource: Dissertations Abstracts International, Volume: 84-12, Section: B.▲ | ||
500 | ▼aAdvisor: Poveda, Katja.▲ | ||
502 | 1 | ▼aThesis (Ph.D.)--Cornell University, 2023.▲ | |
506 | ▼aThis item must not be sold to any third party vendors.▲ | ||
520 | ▼aEcological intensification is a set of practices and principles aimed at managing biodiversity to maintain or enhance crop yields while reducing negative environmental impacts of conventional agriculture. One of the most successful examples of ecological intensification is the push-pull system developed by the International Centre of Insect Physiology and Ecology (ICIPE) for cereal crops in Africa. First developed in the 1990s, the push-pull system utilizes two companion crops alongside a cereal grain (most often maize) to reduce pressure from insect pests and parasitic weeds, enhance soil quality, and dramatically improve yield. While the push-pull system provides significant benefits to growers, its impacts also vary for reasons that are not well-understood. Working closely with our collaborators at ICIPE, SLU, and Lund University, we examined different drivers that could influence the effectiveness of the push-pull system. We found that push-pull fields which had been established for longer had stronger pest suppression and higher yield. Interestingly, the pest suppression benefits showed some evidence of spilling over to neighboring control fields, meaning that the longer a push-pull field was established, the lower the pressure on its neighboring control field as well. We also found that push-pull was resilient across weather and landscape gradients. While push-pull's effect was slightly weaker in certain conditions (including in landscapes with a high percentage of surrounding agriculture), push-pull fields always outperformed control fields by significant margins. Finally, we found that biological control services in push-pull fields could vary with both time within the growing season and surrounding landscape context. Early in the growing season push-pull fields had higher levels of pest egg predation than control fields, but later in the season this pattern reversed on farms surrounded by more natural area. Overall, we find that even where push-pulls benefits may vary, they are robust across time, landscape context, and weather context, and are likely to remain so in the future. More broadly, we consider our results encouraging for ecological intensification in general, showing that ecologically intensified systems may be robust over extended timespans, across a range of environmental conditions, and against novel invasive pests.▲ | ||
590 | ▼aSchool code: 0058.▲ | ||
650 | 4 | ▼aEntomology.▲ | |
650 | 4 | ▼aEcology.▲ | |
650 | 4 | ▼aAgriculture.▲ | |
653 | ▼aAgroecology▲ | ||
653 | ▼aEcological intensification▲ | ||
653 | ▼aLandscape ecology▲ | ||
653 | ▼aLong-term data▲ | ||
653 | ▼aPush-pull▲ | ||
653 | ▼aSustainable agriculture▲ | ||
690 | ▼a0353▲ | ||
690 | ▼a0329▲ | ||
690 | ▼a0473▲ | ||
710 | 2 | 0 | ▼aCornell University.▼bEntomology.▲ |
773 | 0 | ▼tDissertations Abstracts International▼g84-12B.▲ | |
773 | ▼tDissertation Abstract International▲ | ||
790 | ▼a0058▲ | ||
791 | ▼aPh.D.▲ | ||
792 | ▼a2023▲ | ||
793 | ▼aEnglish▲ | ||
856 | 4 | 0 | ▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16932104▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.▲ |
Spatial and Temporal Context-Dependence in the Push-Pull System[electronic resource]
자료유형
국외eBook
서명/책임사항
Spatial and Temporal Context-Dependence in the Push-Pull System [electronic resource]
발행사항
[S.l.] : Cornell University. 2023 Ann Arbor : ProQuest Dissertations & Theses , 2023
형태사항
1 online resource(110 p.)
일반주기
Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
Advisor: Poveda, Katja.
Advisor: Poveda, Katja.
학위논문주기
Thesis (Ph.D.)--Cornell University, 2023.
요약주기
Ecological intensification is a set of practices and principles aimed at managing biodiversity to maintain or enhance crop yields while reducing negative environmental impacts of conventional agriculture. One of the most successful examples of ecological intensification is the push-pull system developed by the International Centre of Insect Physiology and Ecology (ICIPE) for cereal crops in Africa. First developed in the 1990s, the push-pull system utilizes two companion crops alongside a cereal grain (most often maize) to reduce pressure from insect pests and parasitic weeds, enhance soil quality, and dramatically improve yield. While the push-pull system provides significant benefits to growers, its impacts also vary for reasons that are not well-understood. Working closely with our collaborators at ICIPE, SLU, and Lund University, we examined different drivers that could influence the effectiveness of the push-pull system. We found that push-pull fields which had been established for longer had stronger pest suppression and higher yield. Interestingly, the pest suppression benefits showed some evidence of spilling over to neighboring control fields, meaning that the longer a push-pull field was established, the lower the pressure on its neighboring control field as well. We also found that push-pull was resilient across weather and landscape gradients. While push-pull's effect was slightly weaker in certain conditions (including in landscapes with a high percentage of surrounding agriculture), push-pull fields always outperformed control fields by significant margins. Finally, we found that biological control services in push-pull fields could vary with both time within the growing season and surrounding landscape context. Early in the growing season push-pull fields had higher levels of pest egg predation than control fields, but later in the season this pattern reversed on farms surrounded by more natural area. Overall, we find that even where push-pulls benefits may vary, they are robust across time, landscape context, and weather context, and are likely to remain so in the future. More broadly, we consider our results encouraging for ecological intensification in general, showing that ecologically intensified systems may be robust over extended timespans, across a range of environmental conditions, and against novel invasive pests.
주제
ISBN
9798379712648
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