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Comparison of soil surface arthropod populations in conventional tillage, no-tillage and old field systems 常规耕作、免耕和旧田制土壤表面节肢动物种群的比较
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90007-0
A.Y. Blumberg, D.A. Crossley Jr.
{"title":"Comparison of soil surface arthropod populations in conventional tillage, no-tillage and old field systems","authors":"A.Y. Blumberg,&nbsp;D.A. Crossley Jr.","doi":"10.1016/0304-3746(83)90007-0","DOIUrl":"10.1016/0304-3746(83)90007-0","url":null,"abstract":"<div><p>Soil surface arthropod populations in conventional tillage (CT) and no-tillage (NT) sorghum and adjacent old field (OF) were compared using pitfall trap captures. Overall diversity (<span><math><mtext>H</mtext></math></span>) and similarity quotients (QS) between systems were calculated for each of seven 24-h sampling periods throughout the season. Diversity of the soil surface arthropods was greater in NT than either CT or OF. Although each system was distinct (any two of the systems had less than 30% of their species in common), NT was most similar to OF and least similar to CT during a period of drought and after heading of the sorghum. Percentages of individuals and species represented by spiders were similar in NT (30 and 15%) and OF (22 and 17%); percentages were substantially less in CT (11 and 8%). Yields (biomass of sorghum) in CT and NT were not significantly different despite the generally predicted higher pest populations in NT in the absence of insecticides. Leaf area grazed by insects was greater in CT (28%) than in NT (12%).</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 247-253"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90007-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86854784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 101
Proceedings o f a symposium on paddy soil 水稻土研讨会论文集
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90017-3
A. ban Diest
{"title":"Proceedings o f a symposium on paddy soil","authors":"A. ban Diest","doi":"10.1016/0304-3746(83)90017-3","DOIUrl":"https://doi.org/10.1016/0304-3746(83)90017-3","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 277-279"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90017-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137439014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nitrogen cycling in west African ecosystems 西非生态系统中的氮循环
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90015-X
M.J. Frissel
{"title":"Nitrogen cycling in west African ecosystems","authors":"M.J. Frissel","doi":"10.1016/0304-3746(83)90015-X","DOIUrl":"10.1016/0304-3746(83)90015-X","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 274-275"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90015-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"102057642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Movement of surface-applied phorate and water through unsaturated soil 表面施用的磷酸盐和水通过非饱和土壤的运动
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90009-4
G. Singh, Z. Singh, I.S. Dahiya, R.S. Malik
{"title":"Movement of surface-applied phorate and water through unsaturated soil","authors":"G. Singh,&nbsp;Z. Singh,&nbsp;I.S. Dahiya,&nbsp;R.S. Malik","doi":"10.1016/0304-3746(83)90009-4","DOIUrl":"10.1016/0304-3746(83)90009-4","url":null,"abstract":"<div><p>The simultaneous movement of surface-applied phorate and water was studied in laboratory columns containing, initially, moist and dry sandy loam soil. Phorate was applied onto the soil and leached with water under ponded and controlled infiltration conditions. Phorate and water distribution profiles were determined by destructive sampling at two stages: (1) immediately following infiltration and (2) after matching total infiltration, redistribution and evaporation time for two water-application rates. Regardless of the initial soil water content, just after the termination of infiltration, phorate was displaced more efficiently and its concentration peak formed at deeper depth with the slower than with the faster application rate. Following redistribution, this trend was reversed. Phorate movement was also found to be dependent on the initial soil water content. The higher the initial soil water content, the deeper and more complete was the displacement of phorate during infiltration and redistribution.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 259-263"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90009-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88467495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Heathland and shrubland ecosystems 希思兰和灌木丛生态系统
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90013-6
P. Jacquard
{"title":"Heathland and shrubland ecosystems","authors":"P. Jacquard","doi":"10.1016/0304-3746(83)90013-6","DOIUrl":"10.1016/0304-3746(83)90013-6","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 271-272"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90013-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85705503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physiological processes in plant ecology. Toward a synthesis with atriplex 植物生态学中的生理过程。走向与矩阵的合成
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90012-4
P. Jacquard
{"title":"Physiological processes in plant ecology. Toward a synthesis with atriplex","authors":"P. Jacquard","doi":"10.1016/0304-3746(83)90012-4","DOIUrl":"https://doi.org/10.1016/0304-3746(83)90012-4","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 268-271"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90012-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137439016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Grassland in the British economy 英国的草原经济
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90016-1
J.W. Sturrock
{"title":"Grassland in the British economy","authors":"J.W. Sturrock","doi":"10.1016/0304-3746(83)90016-1","DOIUrl":"https://doi.org/10.1016/0304-3746(83)90016-1","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 275-277"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90016-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137439013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elsevier's dictionary of weeds of western Europe 爱思唯尔的西欧杂草词典
Agro-Ecosystems Pub Date : 1983-02-01 Epub Date: 2003-09-29 DOI: 10.1016/0304-3746(83)90018-5
K.J. Murphy
{"title":"Elsevier's dictionary of weeds of western Europe","authors":"K.J. Murphy","doi":"10.1016/0304-3746(83)90018-5","DOIUrl":"10.1016/0304-3746(83)90018-5","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 3","pages":"Pages 279-280"},"PeriodicalIF":0.0,"publicationDate":"1983-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(83)90018-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72813469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Mediterranean-type shrublands 地中海式灌木地
Agro-Ecosystems Pub Date : 1982-07-01 Epub Date: 2003-08-20 DOI: 10.1016/0304-3746(82)90007-5
G. Stanhill
{"title":"Mediterranean-type shrublands","authors":"G. Stanhill","doi":"10.1016/0304-3746(82)90007-5","DOIUrl":"10.1016/0304-3746(82)90007-5","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 2","pages":"Pages 148-150"},"PeriodicalIF":0.0,"publicationDate":"1982-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(82)90007-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75992427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Human labor as an energy source for rice production in the developing world 在发展中国家，人类劳动力作为水稻生产的能源
Agro-Ecosystems Pub Date : 1982-07-01 Epub Date: 2003-08-20 DOI: 10.1016/0304-3746(82)90002-6
Stephen M. Freedman
{"title":"Human labor as an energy source for rice production in the developing world","authors":"Stephen M. Freedman","doi":"10.1016/0304-3746(82)90002-6","DOIUrl":"10.1016/0304-3746(82)90002-6","url":null,"abstract":"<div><p>Human labor requirements for rice production practices in the developing world are assessed in terms of baseline worker hours and energy costs per hectare. Modifications of traditional cultivation systems are analyzed with respect to agricultural techniques (the methods by which inputs are powered) and technologies (the applications of knowledge to the production system) used. Human labor, animal labor and mechanical sources of energy are compared within traditional, improved and modern modes of technology. Nine different technique/technology options are examined in terms of energy efficiency for land preparation and seeding, harvesting and threshing, as well as auxilliary intercultivation procedures. Specific employment planning strategies are suggested, based on the results of the operational analysis.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 2","pages":"Pages 125-136"},"PeriodicalIF":0.0,"publicationDate":"1982-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(82)90002-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91502638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
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