Weed Technology最新文献

{"title":"Sensitivity of TamArkTM Grain Sorghum and Monocot Weed Species to ACCase- and ALS-inhibiting Herbicides","authors":"Jacob Fleming, J. Norsworthy, M. Bagavathiannan, T. Barber","doi":"10.1017/wet.2023.51","DOIUrl":"https://doi.org/10.1017/wet.2023.51","url":null,"abstract":"\u0000 Postemergence selective monocot control in grain sorghum is an issue due to the limited number of herbicides available. The herbicides currently labeled in grain sorghum have strict use restrictions, low efficacy on johnsongrass, or weed resistance issues. To introduce a new effective herbicide mode of action for monocot control, multiple companies and universities have been developing herbicide-resistant grain sorghum that would allow producers to utilize either acetolactate synthase (ALS) or acetyl coenzyme A carboxylase (ACCase) inhibitors for postemergence monocot control. An experiment was conducted in Fayetteville, AR, in 2020 and 2021 to determine the effectiveness of two ALS-inhibiting herbicides and nine ACCase-inhibiting herbicides on TamArkTM grain sorghum, conventional grain sorghum, and problematic monocot weed species. Grain sorghum and monocot weeds (johnsongrass, broadleaf signalgrass, barnyardgrass, and Texas panicum) were sprayed when TamArkTM grain sorghum reached the 2- to 3-leaf stage. TamArkTM grain sorghum was tolorant to all ACCase-inhibiting herbicides tested exhibiting ≤10% injury at all evaluation timings, except clethodim and sethoxydim, and had no resistance to the ALS-inhibiting herbicides evaluated. Additionally, all ACCase inhibitors except diclofop and pinoxaden controlled all monocots tested >91% by 28 days after application (DAA). Conversely, the two ALS inhibitors, imazamox and nicosulfuron had ≤81% control of broadleaf signalgrass 28 DAA but still controlled all other monocots >95%. TamArkTM grain sorghum 'has low sensitivity to multiple ACCase-inhibiting herbicides thus providing an effective POST option for monocot weed control and unwanted volunteer TamArkTM plants can be controlled with cledthodim, sethoxydim, nicosulfuron, or imazamox has low sensitivity to multiple ACCase-inhibiting herbicides. Imazamox and nicosulfuron, both ALS-inhibiting herbicides, while not useful on TamArkTM grain sorghum, are effective options for monocot control in IgrowthTM and InzenTM grain sorghum, respectively.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41904887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contributions of shading, soybean row-width, and planting green on horseweed management compared with soil-applied residual herbicides","authors":"Justin D. L. Fisher, Christy L. Sprague","doi":"10.1017/wet.2023.49","DOIUrl":"https://doi.org/10.1017/wet.2023.49","url":null,"abstract":"\u0000 Glyphosate-resistant (GR) horseweed is a problematic weed for Michigan soybean growers. Additionally, rosette- and upright- horseweed growth types have been observed co-emerging during mid- to late-summer in several Michigan fields. In the greenhouse, shade levels from 35 to 92% reduced rosette and upright horseweed biomass 31 to 99% compared with the upright growth type grown under 0% shade. Greater reductions in biomass occurred under 69 and 92% shade. Thus, increased shading by planting in narrow rows and/or planting green into cereal rye may improve horseweed suppression. A field experiment conducted over three site-years compared the effect of fall-planted cereal rye terminated with glyphosate 1 wk after planting (planting green) with a preemergence (PRE) residual herbicide program (glyphosate + 2,4-D + flumioxazin + metribuzin) on horseweed control in soybean planted in three row widths (19-, 38-, and 76-cm). Planting green or applying a residual herbicide program across all row widths reduced horseweed biomass 86 to 91% and 95 to 99%, respectively, compared with soybean planted with no cover in 76 cm rows, 4 to 6 wk after planting (WAP). At soybean harvest, when a noneffective postemergence (POST) herbicide (glyphosate) was applied horseweed biomass was 42 and 81% lower by planting green or applying a residual herbicide program compared with no cover, respectively. Similarly, planting soybean in 19 cm rows reduced horseweed biomass compared with 38- and 76-cm rows. When an effective POST program was applied, similar horseweed biomass reductions were observed by planting green or applying a residual herbicide across all row widths. Additionally, soybean yield and economic returns were similar between planting green and applying a residual herbicide in 1 of 2 site-years. Integrating planting green and an effective POST herbicide program offers an alternative horseweed management strategy to applying a residual preemergence herbicide program.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45501334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WET volume 37 issue 4 Cover and Front matter","authors":"","doi":"10.1017/wet.2023.88","DOIUrl":"https://doi.org/10.1017/wet.2023.88","url":null,"abstract":"","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":"96 1","pages":"f1 - f3"},"PeriodicalIF":1.4,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Fluazifop Timing and Rate on Johnsongrass (Sorghum halepense (L.)) Control in ACCase Resistant Grain Sorghum (Sorghum bicolor (L.) Moench)","authors":"Jacob Fleming, J. Norsworthy, M. Bagavathiannan, T. Barber","doi":"10.1017/wet.2023.47","DOIUrl":"https://doi.org/10.1017/wet.2023.47","url":null,"abstract":"\u0000 Genetic similarities between johnsongrass and grain sorghum leave producers with limited herbicide options for postemergence johnsongrass control. TamArkTM grain sorghum with resistance to acetyl CoA carboxylase-inhibiting herbicides was developed through a collaboration between the University of Arkansas System Division of Agriculture and Texas A&M AgriLife Research. Two field experiments were conducted in 2021 in two locations each Keiser and Marianna, AR or Fayetteville and Marianna, AR. The objective of the first was to determine the optimal rate and application timing of fluazifop-butyl for control of natural johnsongrass populations in a non-crop setting, and of the second was to evaluate johnsongrass control and TamArkTM grain sorghum tolerance in response to fluazifop-butyl applied at different timings and rates based on crop growth stage. The highest levels of johnsongrass control occurred when sequential applications of fluazifop-butyl were utilized. All sequential treatments provided at least 80% johnsongrass control at any rate or application timing tested. A single application of fluazifop-butyl provided greater than 90% johnsongrass control when applied at 210 g ai ha-1 to johnsongrass with less than 6 leaves. Weed size played a role in achieving high levels of johnsongrass control. Greater than 90% control was achieved when johnsongrass had 6-leaves or less at the initial application for the sequential application treatments. A single application of fluazifop-butyl at 105 g ai ha-1 resulted in no more than 82% johnsongrass mortality at any application timing. TamArk TM grain sorghum injury did not exceed 6% at any application timing or rate. It was, therefore, considered to be safe even if the initial application was made before the 6-leaf crop stage. Since no unacceptable levels of injury were observed with TamArkTM grain sorghum for fluazifop-butyl, johnsongrass size at the time of application should be the most critical aspect for control with this herbicide.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42376332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Interactions of 2,4-D, Dichlorprop-p, Dicamba, and Halauxifen/Fluroxypyr for Controlling Multiple Herbicide-Resistant Kochia (Bassia scoparia L.)","authors":"Sachin Dhanda, Vipan Kumar, P. Geier, R. Currie, J. Dille, A. Obour, E. Yeager, J. Holman","doi":"10.1017/wet.2023.48","DOIUrl":"https://doi.org/10.1017/wet.2023.48","url":null,"abstract":"Multiple herbicide-resistant (MHR) kochia is a serious concern in the U.S. Great Plains and warrants alternative herbicide mixtures for its control. Greenhouse and field experiments were conducted at Kansas State University Research and Extension Centers near Hays and Garden City, KS to investigate the interactions of 2,4-D, dichlorprop-p, dicamba, and halauxifen/fluroxypyr premix in various combinations for MHR kochia control. Two previously confirmed MHR (resistant to glyphosate, dicamba, and fluroxypyr) populations and a susceptible (SUS) population were tested in a greenhouse study. Kochia at the Hays field site was resistant to glyphosate and chlorsulfuron, whereas the population at Garden City was resistant to glyphosate, dicamba, fluroxypyr, and atrazine. Results from greenhouse study indicated that 2,4-D, dicamba, dichlorprop-p, and premix of halauxifen/fluroxypyr provided 26 to 69% control of both MHR populations at 28 days after treatment (DAT). However, the control increased to 85 to 97% when these herbicides were applied in three-way mixtures. Synergistic interactions were observed when dicamba was mixed with dichlorprop-p, 2,4-D, dichlorprop-p + 2,4-D, and halauxifen/fluroxypyr + 2,4-D for shoot dry weight reductions (86 to 92%) of both MHR populations. Results from field study also indicated synergistic interactions when dicamba was mixed with dichlorprop-p + 2,4-D, halauxifen/fluroxypyr + dichlorprop-p, and halauxifen/ fluroxypyr + 2,4-D, resulting in 84 to 95% control of MHR kochia at 28 DAT across both sites. These results indicate that synergistic effects of mixing dicamba with other auxinic herbicides in two- or three-way mixtures can help control MHR kochia.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43090054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Smart Spray Technology for Post-Emergence Herbicide Application in Row Middles of Plasticulture Production","authors":"Ana C. Buzanini, A. Schumann, N. Boyd","doi":"10.1017/wet.2023.44","DOIUrl":"https://doi.org/10.1017/wet.2023.44","url":null,"abstract":"\u0000 Postemergence herbicides to control weeds in the space between raised, plastic-covered beds in plasticulture production systems are typically banded and herbicides are applied to weeds as well as where weeds do not occur. To reduce the incidence of off-targeted applications, the University of Florida developed smart spray technology for row middles in plasticulture systems. The technology detects weed categories and applies herbicides only where they occur. Field experiments were conducted at the Gulf Coast Research and Education Center in Balm, FL, in the Fall 2021 and Spring 2022. The objective was to evaluate the efficacy of postemergence applications of diquat and glyphosate in row middles in jalapeno pepper fields when banded or applied with smart spray technology. The overall precision of the weed detection model was 0.92 and 0.89 for fall and spring respectively. The actuation precision achieved was 0.86 and 1 for fall and spring respectively. No significant differences were observed between banded and targeted applications either with glyphosate or diquat in terms of broadleaf, grass, and nutsedge weed density. No significant pepper damage was observed with either herbicides or application techniques. The smart spray technology reduced herbicide application volume by 26% and 42% for fall and spring respectively, with no reduction in weed control or pepper yield compared to a banded application. Overall, the smart spray technology reduced the herbicide volume applied with no reductions in weed control and no significant effects on crop yield.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41828275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regional response of zoysiagrass turf to glufosinate and glyphosate applied during post-dormancy transition based on accumulated heat units","authors":"J. M. Craft, Navdeep Godara, Jeffrey F Derr, Adam D. Nichols, J. McCurdy, Michael P Richard, S. Askew","doi":"10.1017/wet.2023.46","DOIUrl":"https://doi.org/10.1017/wet.2023.46","url":null,"abstract":"\u0000 Turfgrass managers apply nonselective herbicides to control winter annual weeds during dormancy of warm-season turfgrass. Zoysiagrass subcanopies, however, retain green leaves and stems during winter dormancy, especially in warmer climatic regions. The partially green zoysiagrass often deters the use of nonselective herbicides due to variable injury concerns in transition and southern climatic zones. This study evaluated zoysiagrass response to glyphosate and glufosinate applied at four different growing-degree-day (GDD) based application timings during post-dormancy transition under different geographic regions, including Blacksburg, VA; Starkville, MS; and Virginia Beach, VA, in 2018 and 2019. GDD was calculated using a 5C base temperature with accumulation beginning January 1 each yr, and targeted application timings were 125, 200, 275, and 350 GDD5C. Zoysiagrass injury response to glyphosate and glufosinate was consistent across a broad growing region from northern Mississippi to coastal Virginia but varied by application timing. Glyphosate application at 125 and 200 GDD5C can be utilized safely for weed control during post-dormancy period of zoysiagrass, while glufosinate caused unacceptable turf injury regardless of application timings. Glyphosate and glufosinate exhibited a stepwise increase to maximum injury with increasing targeted GDD5C application timings. Glyphosate applied at 125 or 200 GDD5C did not injure zoysiagrass above a threshold of 30%, while glufosinate caused greater than 30% injury for 28 and 29 d when applied at 125 and 200 GDD5C, respectively. Likewise, glyphosate application at 125 or 200 GDD5C did not affect the zoysiagrass green cover area under progress curve d-1, while later application timings reduced it. Glyphosate and glufosinate caused higher injury to zoysiagrass when applied at greater cumulative heat units and were attributed to increasing turfgrass green leaf density, as heat unit accumulation is positively correlated with green leaf density. Accumulated heat unit-based application timing will allow practitioners to apply nonselective herbicides with reduced injury concerns.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43818482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ethofumesate Applied at Greater than Labeled Rates Postemergence in Sugarbeet","authors":"Alexa L. Lystad, T. J. Peters","doi":"10.1017/wet.2023.42","DOIUrl":"https://doi.org/10.1017/wet.2023.42","url":null,"abstract":"\u0000 Ethofumesate is a broad spectrum, soil-applied herbicide for control of broadleaf and grass weeds in sugarbeet. Ethofumesate is commonly applied preemergence at rates ranging from 1.25 to 4.2 kg ai ha−1, or applied postemergence, up to 0.38 kg ai ha−1. Generic Crop Science has developed a new Ethofumesate 4SC label that increased ethofumesate postemergence rates up to 4.48 kg ha−1 in sugarbeet with more than two true leaves per plant. Field and greenhouse experiments were conducted in 2018 and 2019 to evaluate sugarbeet tolerance and herbicide efficacy. Field tolerance experiments indicated sugarbeet stature from ethofumesate postemergence at 0.28, 0.56, and 1.12 kg ha−1 was the same as the non-treated control, but ethofumesate at 2.24 kg ha−1 reduced sugarbeet stature; however, did not affect yield components. Ethofumesate postemergence at 4.48 kg ha−1 reduced sugarbeet stature and affected sugarbeet yield components. Ethofumesate alone postemergence provided weed control of up to 85, 76, and 84% on common lambsquarters, redroot pigweed, and waterhemp, respectively, in field efficacy experiments. Mixing ethofumesate at 1.12 kg ha−1 with glyphosate does not provide a second effective herbicide for postemergence control of common lambsquarters and redroot pigweed, but does provide residual control of these weeds when at least one-half inch of penetrating rainfall occurs, following application. In greenhouse experiments, ethofumesate alone or ethofumesate plus glyphosate timed to common lambsquarters, redroot pigweed, or waterhemp less than 2.5-cm provided the best combination of burndown and soil residual control compared with 2.5- to 5-cm tall weeds. Ethofumesate postemergence at 1.12 kg ha−1 plus glyphosate provided the best combination of tolerance and efficacy, especially on waterhemp.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57584239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preemergence Herbicide Premixes Reduce the Risk of Soil Residual Weed Control Failure in Corn","authors":"Tatiane Severo Silva, N. Arneson, Ryan DeWerff, Daniel H. Smith, D. V. Silva, R. Werle","doi":"10.1017/wet.2023.45","DOIUrl":"https://doi.org/10.1017/wet.2023.45","url":null,"abstract":"\u0000 Widespread occurrence of herbicide-resistant weeds and more variable weather conditions across the US has made weed control in many crops more challenging. Preemergence (PRE) herbicides with soil residual activity have resurged as the foundation for early-season weed control in many crops. Field experiments were conducted at Janesville and Lancaster, WI in 2021 and 2022 (4 site-years) to evaluate the weed control efficacy of solo (single site of action [SOA]) and premix (two or more SOAs) PRE herbicides in conventional tillage corn. Treatments consisted of 18 PRE herbicides plus a non-treated check. At Janesville-2021, S-metolachlor + bicyclopyrone + mesotrione, atrazine + S-metolachlor + bicyclopyrone + mesotrione, and clopyralid + acetochlor + mesotrione provided >72% giant ragweed control. At Janesville-2022, none of the PRE herbicides evaluated provided >70% giant ragweed control due to the high giant ragweed density and the lack of timely rainfall. At Lancaster-2021, atrazine, dicamba, and flumetsulam + clopyralid provided <45% waterhemp control, but the remaining treatments provided >90% control. At Lancaster-2022, the efficacy of some PRE herbicides was reduced due to the high waterhemp density; however, most herbicides provided >75% control. At Lancaster-2021 and 2022, only dicamba and S-metolachlor did not provide >75% common lambsquarters control. PRE herbicides containing SOA group 15 provided >75% control of giant foxtail. Across weed species, PRE herbicides with two (78%) and three (81%) SOAs provided higher weed control than PRE herbicides with a single SOA (68%), indicating that at least two SOAs PRE result in better early-season weed control. The efficacy of the PRE herbicide treatments evaluated herein varied according to the soil seed bank weed community composition and environmental conditions (i.e., rainfall following application), but the premixes were a more reliable option to improve early-season weed control in conventional tillage corn.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43464796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preferred Information and Delivery Methods for Weed Management Extension in Virginia","authors":"K. B. Pittman, Elisabeth Russell, M. Flessner","doi":"10.1017/wet.2023.43","DOIUrl":"https://doi.org/10.1017/wet.2023.43","url":null,"abstract":"\u0000 The goal of weed science extension efforts are to encourage and accelerate adoption of diverse, effective, and economical management tactics. To be most successful and efficient, extension personnel need to be aware of growers’ preferred information sources, delivery format, and areas of focus for future research. To this end, surveys were distributed at crop and forage extension meetings in Virginia. The results from 249 responses indicate that both crop and forage producers have similar influences as well as preferences for both programming and future research. Agribusiness personnel (e.g. co-ops, suppliers, vendors, crop consultants, sales reps) had the greatest influence on herbicide-purchasing decisions and the primary source of information for weed management decisions, and thus should be a target audience of extension. Respondents said that economic assessments, weed control data, and yield data are most likely to influence changes in management and that they would prefer to get that information through traditional extension formats (presentations, publications, and on-farm demonstrations). Generally, respondents also indicated that they wanted extension to focus on evaluating new herbicides for weed control and crop safety in the future over alternative non-herbicidal weed control methods. Therefore, extension is likely to be more successful by including herbicides in the integrated weed management approach rather than solely non-chemical approaches.","PeriodicalId":23710,"journal":{"name":"Weed Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41825180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}