The Northeast Institute of Geography and Agricultural Ecology, a new CAS research body inaugurated in March 2002,comes from the merger of two former CAS research affiliates:Changchun Institute of Geography and Hei... The Northeast Institute of Geography and Agricultural Ecology, a new CAS research body inaugurated in March 2002,comes from the merger of two former CAS research affiliates:Changchun Institute of Geography and Heilongjiang Institute of Agricultural Modernization in Harbin.……展开更多
Vegetables are vital for human health and are consumed five days a week in Cambodia.However,the production cannot meet domestic demands due to labor-intensive farming and production costs related to soil tillage.Mecha...Vegetables are vital for human health and are consumed five days a week in Cambodia.However,the production cannot meet domestic demands due to labor-intensive farming and production costs related to soil tillage.Mechanization is needed along with soil quality and sustainability improvements by the adoption of CA(Conservation Agriculture).The research aimed to compare the performance of the no-till vegetable transplanter with punch-planter in CA and hand transplanting in CT(Conventional Tillage).The study was conducted at the Royal University of Agriculture,Cambodia,starting from January to September 2020,by firstly growing sunn hemp as a cover crop and then transplanting Thai round eggplant.A randomized complete block design was used with three treatments,replicated three times.Each plot was 2 m by 15 m,with 0.2-m row spacing.The results showed that the transplanter speed was 0.54 kmh^-1,almost two times the speed of punch planter and 9 times the speed of hand transplanting.The highest working capacity was also achieved with the transplanter.However,different transplanting did not affect plant spacing,or plant density.Plant spacing was 1 m,and plant density varied from 10,300 to 11,500 plantsha-1.Plant growth and yield were also not influenced by the transplanter in CA,or hand transplanting in CT.Average fruit diameter,fruit weight,fruit number,and yield were 38 mm,31.4 gfruit-1,15.7 fruitsplant-1 and 3.9 tha-1,respectively.The maximum working area of the transplanter and its break-even area were 25.2 ha·y^-1 and 18.3 ha·y^-1,respectively.Using the no-till transplanter may save both time and labor,but its use in combination with CA was unlikely to affect plant growth and yield in the short term.展开更多
The Clarivate Analytics Journal Citation Reports(JCR)and Web of Science(WoS)platforms are arguably the most influential journal citation/metric databases worldwide.Journals must first be indexed in the WoS Core Collec...The Clarivate Analytics Journal Citation Reports(JCR)and Web of Science(WoS)platforms are arguably the most influential journal citation/metric databases worldwide.Journals must first be indexed in the WoS Core Collection(CC)before being indexed in the JCR.The JCR and WoS platform are separate Clarivate Analytics products,but the JCR is included in the WoS platform for organizations that purchase both databases.The analysis for this study focused on citation data reported in the 2017 JCR(based on 2016 citation data)and other data reported in the WoS CC up to 2016.A total of 14 journals are indexed in the 2017 JCR agricultural engineering category;however,only 13 journals are analyzed in this because one journal was listed by mistake.Six of the 13 journals are published by large for-profit publishers(i.e.,Elsevier B.V.or Springer Verlag)and the other seven are published by respective professional societies.The journals were analyzed as a function of type(specialty versus comprehensive),type of publisher and publication frequency,metrics such as the Journal Impact Factor(JIF),volumes of articles published by year and journal,and the source institutions and countries of published articles.Bioenergy-and industrial crop-focused journals included in the 2017 JCR agricultural engineering category manifest the strongest overall metrics,as evidenced by relatively high JIF scores:Bioresource Technology(4.917),Biomass and Bioenergy(3.219)and Industrial Crops and Products(3.181).In contrast,the highest JIF reported in the 2017 JCR for a comprehensive agricultural engineering journal was 2.044 for Biosystems Engineering.During 2006 to 2016,the number of articles indexed in the Core Collection for the JCR agricultural engineering category rose from 1,124 to 4,078,an increase of 263%.Over 70% of the total articles published in 2016 were published in the three bioenergy-or industrial-crop focused journals.The top three countries that published the highest levels of WoS Core Collection agricultural engineering articles in 2016 were China(1132),United States(669)and Brazil(474).The similar top publishing institutions were the United States Department of Agriculture(USDA;136),Chinese Academy of Sciences(CAS;136)and Indian Council for Scientific and Industrial Research(CSIR;79).The results of the study also show that publishing by Chinese scientists in the 13 journals indexed in the JCR Agricultural Engineering(AE)category is rapidly increasing,with seven research institutions ranked in the global top 20 in 2016,based on studies published in journals indexed in the JCR agricultural engineering category.The analysis also reveals that the specialty journals(e.g.,the three bioenergy-focused journals)are not directly comparable with the comprehensive agricultural engineering journals and should potentially be excluded from future versions of the JCR and WoS CC AE categories.展开更多
文摘 The Northeast Institute of Geography and Agricultural Ecology, a new CAS research body inaugurated in March 2002,comes from the merger of two former CAS research affiliates:Changchun Institute of Geography and Heilongjiang Institute of Agricultural Modernization in Harbin.……
基金the generous support of the American People provided to the CE SAIN(Center of Excellence on Sustainable Agricultural Intensification and Nutrition)of the Royal University of Agriculture through the Feed the Future Innovation Lab for Collaborative Research on Sustainable Intensification at Kansas State University funded by the USAID(United States Agency for International Development)under Cooperative Agreement No.AID-OAA-L-14-00006the USDA,Agricultural Research Service,National Soil Dynamics Laboratory(NSDL)through mentorship by Dr.Ted Kornecki on the testing of the machine,and the donation of the no-till vegetable transplanter prototype fabricated at NSDL by Mr.Corey Kichler to the Royal University of Agricultureand the IFDC(International Fertilizer Development Center).The contents are the sole responsibility of the authors and do not necessarily reflect the views of USAID,USDA,IFDC or the United States Government.
文摘Vegetables are vital for human health and are consumed five days a week in Cambodia.However,the production cannot meet domestic demands due to labor-intensive farming and production costs related to soil tillage.Mechanization is needed along with soil quality and sustainability improvements by the adoption of CA(Conservation Agriculture).The research aimed to compare the performance of the no-till vegetable transplanter with punch-planter in CA and hand transplanting in CT(Conventional Tillage).The study was conducted at the Royal University of Agriculture,Cambodia,starting from January to September 2020,by firstly growing sunn hemp as a cover crop and then transplanting Thai round eggplant.A randomized complete block design was used with three treatments,replicated three times.Each plot was 2 m by 15 m,with 0.2-m row spacing.The results showed that the transplanter speed was 0.54 kmh^-1,almost two times the speed of punch planter and 9 times the speed of hand transplanting.The highest working capacity was also achieved with the transplanter.However,different transplanting did not affect plant spacing,or plant density.Plant spacing was 1 m,and plant density varied from 10,300 to 11,500 plantsha-1.Plant growth and yield were also not influenced by the transplanter in CA,or hand transplanting in CT.Average fruit diameter,fruit weight,fruit number,and yield were 38 mm,31.4 gfruit-1,15.7 fruitsplant-1 and 3.9 tha-1,respectively.The maximum working area of the transplanter and its break-even area were 25.2 ha·y^-1 and 18.3 ha·y^-1,respectively.Using the no-till transplanter may save both time and labor,but its use in combination with CA was unlikely to affect plant growth and yield in the short term.
文摘The Clarivate Analytics Journal Citation Reports(JCR)and Web of Science(WoS)platforms are arguably the most influential journal citation/metric databases worldwide.Journals must first be indexed in the WoS Core Collection(CC)before being indexed in the JCR.The JCR and WoS platform are separate Clarivate Analytics products,but the JCR is included in the WoS platform for organizations that purchase both databases.The analysis for this study focused on citation data reported in the 2017 JCR(based on 2016 citation data)and other data reported in the WoS CC up to 2016.A total of 14 journals are indexed in the 2017 JCR agricultural engineering category;however,only 13 journals are analyzed in this because one journal was listed by mistake.Six of the 13 journals are published by large for-profit publishers(i.e.,Elsevier B.V.or Springer Verlag)and the other seven are published by respective professional societies.The journals were analyzed as a function of type(specialty versus comprehensive),type of publisher and publication frequency,metrics such as the Journal Impact Factor(JIF),volumes of articles published by year and journal,and the source institutions and countries of published articles.Bioenergy-and industrial crop-focused journals included in the 2017 JCR agricultural engineering category manifest the strongest overall metrics,as evidenced by relatively high JIF scores:Bioresource Technology(4.917),Biomass and Bioenergy(3.219)and Industrial Crops and Products(3.181).In contrast,the highest JIF reported in the 2017 JCR for a comprehensive agricultural engineering journal was 2.044 for Biosystems Engineering.During 2006 to 2016,the number of articles indexed in the Core Collection for the JCR agricultural engineering category rose from 1,124 to 4,078,an increase of 263%.Over 70% of the total articles published in 2016 were published in the three bioenergy-or industrial-crop focused journals.The top three countries that published the highest levels of WoS Core Collection agricultural engineering articles in 2016 were China(1132),United States(669)and Brazil(474).The similar top publishing institutions were the United States Department of Agriculture(USDA;136),Chinese Academy of Sciences(CAS;136)and Indian Council for Scientific and Industrial Research(CSIR;79).The results of the study also show that publishing by Chinese scientists in the 13 journals indexed in the JCR Agricultural Engineering(AE)category is rapidly increasing,with seven research institutions ranked in the global top 20 in 2016,based on studies published in journals indexed in the JCR agricultural engineering category.The analysis also reveals that the specialty journals(e.g.,the three bioenergy-focused journals)are not directly comparable with the comprehensive agricultural engineering journals and should potentially be excluded from future versions of the JCR and WoS CC AE categories.
