Journal of Research in Weed Science最新文献_第5页

Effect of weed management in productivity of Spring Maize in Mid-hills of Nepal 杂草管理对尼泊尔中山区春玉米生产力的影响

Journal of Research in Weed Science Pub Date : 2019-03-01 DOI: 10.26655/JRWEEDSCI.2019.1.4

A. Shrestha, B. Thapa, R. Subedi, L. Amgain, M. Devkota

{"title":"Effect of weed management in productivity of Spring Maize in Mid-hills of Nepal","authors":"A. Shrestha, B. Thapa, R. Subedi, L. Amgain, M. Devkota","doi":"10.26655/JRWEEDSCI.2019.1.4","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2019.1.4","url":null,"abstract":"An experiment was conducted in IAAS, Lamjung research field in 2017 in spring Maize with split plot design to evaluate the effect of weed management practice and tillage system on productivity of spring maize. In tillage system, no-till and conventional tillage were kept as main factor whereas seven weed management practices (viz. sequential application of atrazine at 0.75 kg a.i. ha-1 and 2,4-D at 1.5 kg ha-1; pre-emergence tank mix application of atrazine at 0.75 kg ha-1 and glyphosate at 2.5ml lit-1 of water; pre-emergence tank mix application of atrazine at 0.75 kg ha-1 and pendimethalin at 2ml lit-1 of water; cowpea co-culture; black polythene mulch with control treatment weed free and weedy check as sub-plot. Tillage method had not significant effect on the weed dry matter accumulation in different stages. However, weed dry matter accumulation was varied with different weed management practices. The weed check plot was of highest dry matter accumulation (273.38g m-2, 361.95 g m-2 and 235.95 g m-2 in three different stages (30, 60 and 90 DAS respectively). The highest grain, straw yield and yield attributes was found in plastic mulch plot and no-till system with less severe to weed infestation and index which is statically at par with intercropping with cowpea. Though none of weed management practices completely eliminated weeds, black polythene mulching resulted in best grain yield. Besides the environmental protection, cowpea co-culture treatments yielded almost similar grain yield as compared with common herbicidal weed management practices.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80361355","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: 1

Management of complex weed flora in transplanted rice by different herbicides and green manuring 不同除草剂和绿色施肥对移栽水稻复杂杂草区系的管理

Journal of Research in Weed Science Pub Date : 2019-01-01 DOI: 10.26655/jrweedsci.2019.1.7

S. Pinjari, S. Gangawane, M. Jadhav, Jagtap Dnyaneshwar, V. G. Chavan, V. Rajemahadik

引用次数: 1

Efficacy of different botanical extracts on the management of Parthenium hysterophorus (L.) 不同植物提取物对子宫草的防治效果研究

Journal of Research in Weed Science Pub Date : 2019-01-01 DOI: 10.26655/jrweedsci.2019.1.2

A. Ramachandran

{"title":"Efficacy of different botanical extracts on the management of Parthenium hysterophorus (L.)","authors":"A. Ramachandran","doi":"10.26655/jrweedsci.2019.1.2","DOIUrl":"https://doi.org/10.26655/jrweedsci.2019.1.2","url":null,"abstract":"The present study was carried out to evaluate the efficacy of botanical extracts on the management of Parthenium hysterophorus through laboratory experiments. These experiments were carried out at Department of Agronomy, Agricultural College and Research Institute, Madurai during 2013-15. The efficacy of twenty botanicals viz., Abutilon indicum, Amaranthus spinosus, Amaranthus viridis, Azadirachta indica, Calotropis gigantea, Croton bonplandianum, Cynodon dactylon, Cyperus rotundus, Datura metel, Echinochloa crusgalli, Helianthus annuus, Lawsonia inermis, Mangifera indica, Prosopis juliflora, Solanum nigrum, Sorghum bicolor, Sorghum halepense, Tagetes erectus, Tamarindus indica, Tephrosia purpurea were tried at different concentrations under laboratory bioassay. The study reveal that the per cent germination, seedling length, seedling vigor index and seedling biomass of P.hysterophorus was reduced significantly due to application of all botanicals, however the effect was more pronounced with botanicals extract in the order of Datura metel, Mangifera indica, Azadirachta indica, Tagetes erectus, Helianthus annuus and Sorghum bicolor both at 50 and 75 % concentrations. Increased concentration (50 and 75 %) was pronounced more detrimental effects on per cent germination and seedling growth parameters of P.hysterophorus.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"218 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79722671","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: 2

Effect of Mulching on Weed, Fruit Yield and Economic Returns of Garden Egg (Solanium melogena) in Okigwe Southeastern Nigeria 覆盖对尼日利亚东南部Okigwe园蛋(Solanium melogena)杂草、果实产量和经济效益的影响

Journal of Research in Weed Science Pub Date : 2019-01-01 DOI: 10.26655/JRWEEDSCI.2019.1.5

A. O. Ikeh, E. Udoh, A. C. Opara

{"title":"Effect of Mulching on Weed, Fruit Yield and Economic Returns of Garden Egg (Solanium melogena) in Okigwe Southeastern Nigeria","authors":"A. O. Ikeh, E. Udoh, A. C. Opara","doi":"10.26655/JRWEEDSCI.2019.1.5","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2019.1.5","url":null,"abstract":"The experiment was carried out at Umulolo in Okigwe Imo State in 2016 and 2017 seasons. The experiment was laid in randomized complete block design, replicated three times. The treatments were mulching materials (two synthetic materials-polythene sheet, trampoline sheet) while natural or organic materials were 6/ha sawdust and grasses and control treatment (no mulching). Result showed significant difference in all the weed infestation parameters, vegetative growth and yield parameters assessed. In both cropping seasons, the control had significant higher weed density and biomass. Garden egg fruit yield as influenced by different mulching materials was also significantly different (p<0.05) in both cropping seasons. The highest fruit yield; 22.27 and 23.63 t/ha in 2016 and 2017, respectively was from the plot mulched with sawdust. The grasses mulched plot had 21.19 and 22.17 t/ha fruit yield, respectively. The trampoline plot produced 18.77 and 17.18 t/ha fruit, respectively. The least fruit yield was 5.43 and 6.54 t/ha in both cropping seasons in control treatment. The result showed that the plot mulched with sawdust had 7-76% and 6-72% greater fruit yield compared to the other mulching materials in both cropping seasons. The result of indicated that application of grasses and sawdust were more cost effective in weed management and higher economic returns to management compared to trampoline and polythene sheets. Farmers in the study area were advised to mulch their garden egg field during off-season with sawdust. The application of sawdust would reduce weed infestation and also enhances high fruit yield.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81616025","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: 6

Effects of integrated weed management on tuber yield of cassava (Manihot esculenta Crantz) 杂草综合管理对木薯块茎产量的影响

Journal of Research in Weed Science Pub Date : 2019-01-01 DOI: 10.26655/JRWEEDSCI.2019.1.1

F. Nwagwu, Udo I. Asukwo

{"title":"Effects of integrated weed management on tuber yield of cassava (Manihot esculenta Crantz)","authors":"F. Nwagwu, Udo I. Asukwo","doi":"10.26655/JRWEEDSCI.2019.1.1","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2019.1.1","url":null,"abstract":"Field experiments were conducted in 2012 and 2013 at the Teaching and Research Farm of the University of Calabar, Cross River State, Nigeria to determine the effectiveness of integration of Fitsextra® (a solution containing Atrazine and Metolachlor herbicides as active ingredients), egusi melon and hand-weeding on weed management and tuber yield of cassava. The twelve treatments which involved individual and combinations of the above mentioned weed control methods were laid out in a randomized complete block design and replicated three times. Irrespective of the method adopted, weeding depressed weed density by 57.33 % and 63.99 % in 2012 and 2013, respectively and weed biomass by 81.00 % and 79.64 % within the same period compared with the unweeded check. Integration of Fitsextra with egusi melon and/or hand-weeding significantly (P<0.05) suppressed weeds more than the sole use of Fitsextra® or egusi melon. Integration of hand-weeding with Fitsextra and/or egusi melon reduced weed dry matter by 43.46, 87.25, 92.34 and 93.51 % in 2012, and by 53.20, 90.20, 94.61 and 94.56 % in 2013 compared with hand-weeding alone, Fitsextra alone, egusi melon alone and no weeding, respectively. Plots that were hand-weeded thrice and those treated with Fitsextra + hand-weeding twice significantly (P<0.05) produced the highest fresh tuber yield of 9.73 and 10.23 t/ha, respectively in 2013. No weeding reduced cassava tuber yield by 4.83 t/ha (84.89 %) on a 2-year average, compared with the weeded plots. Conclusively, the results indicated that, three hand-weeding optimized cassava tuber yield, however, the integration of Fitsextra or egusi melon can effectively replace the first hand-weeding.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87585301","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: 1

In situ and ex situ floristic diversity of weed seedbank in rice at farmers’ fields 稻田杂草种子库的原位和非原位区系多样性

Journal of Research in Weed Science Pub Date : 2018-09-01 DOI: 10.26655/JRWEEDSCI.2018.9.2

Fahmida Akter, M. Begum, Md. Abdus Salam

{"title":"In situ and ex situ floristic diversity of weed seedbank in rice at farmers’ fields","authors":"Fahmida Akter, M. Begum, Md. Abdus Salam","doi":"10.26655/JRWEEDSCI.2018.9.2","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2018.9.2","url":null,"abstract":"A study was conducted in the net house of Department of Agronomy, Bangladesh Agricultural University as well as in farmers’ fields at Digarkanda village of Mymensingh district to evaluate the in situ and ex situ floristic diversity of the weed seed bank in rice. Five fields were surveyed for in situ evaluation with four replications and soil samples (1.5 kg soil) were collected and placed in plastic pots in the net house for ex situ study. Diversity was computed by the Shannon index (H’). a total of 33 weed species belonging to 17 families were found under in situ whereas, 37 species belonging to 22 families germinated under ex situ condition. The family Cyperaceae had the highest species richness and density under both conditions. Based on importance value, the five most dominant species under in situ condition were Eleocharis atroperpurea,Cyperus difformis, Alternanthera philoxeroides, Azolla pinnata and Echinochloa crusgalli. Whereas, under ex situ condition, two new weed species i.e. Fimbristylis miliaceae and Lindernia antipoda were found dominant instead of Alternanthera philoxeroides and Azolla pinnata and rest of the three species remained the same with slightly different rank and order. Weed density and diversity were also higher under ex situ condition than in situ condition. Ex situ condition had higher H’ index (H’=2.396) than in situ condition (H’=2.230). The highest percentage of weed emergence was observed within the first month of commencement of germination trial under both in situ and ex situ conditions. The information obtained from the study would help to determine the infestation potential of identified weed species and predict the upcoming threat which could lead to construct and improve successful weed management strategies.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87051223","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: 5

The occurrence of resistance to ALS and ACCase-inhibiting herbicides ryegrass (Lolium rigidum Gaudin) in Bizerte region 比塞大地区黑麦草(Lolium rigidum Gaudin)抗ALS和抗accase除草剂的发生情况

Journal of Research in Weed Science Pub Date : 2018-09-01 DOI: 10.26655/JRWEEDSCI.2018.9.5

M. Khammassi, Hanène Chaabane, T. Souissi

{"title":"The occurrence of resistance to ALS and ACCase-inhibiting herbicides ryegrass (Lolium rigidum Gaudin) in Bizerte region","authors":"M. Khammassi, Hanène Chaabane, T. Souissi","doi":"10.26655/JRWEEDSCI.2018.9.5","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2018.9.5","url":null,"abstract":"Ryegrass (Lolium rigidum Gaudin) is a most prevalent weed in Bizerte region and caused losses in yield. Farmers used herbicides to control ryegrass in cereal crops. Thirteen herbicides (ALS inhibitors, ACCase inhibitors and PSII inhibitors) were used in the field experiment to evaluate their efficacy and their effect on yields of wheat and of ryegrass. The trial was installed in Randomized Complete Block Design (RCBD) in Bizerte. Seeds of ryegrass collected from Bizerte during surveys were the subject of the resistance detection to the ALS inhibitor herbicides [AmilcarWG® (mesosulfuron+iodosulfuron)] and to the ACCase inhibitor herbicides [Topik® (clodinafop-propagyl)] by a pot experiment method. The results of the field experiment showed that only Tolurex® [Chlortoluron (PSII inhibitor)] has the best efficacy (83.6%), but all other herbicides (ALS and ACCase inhibitors) have insufficient efficacy on ryegrass. Then, over 60% of ryegrass populations were escaped to treatments ACCase and ALS-inhibiting herbicides that are not statistically different. The low efficacy of herbicides (ALS and ACCase inhibitors) was not explained by a high density of ryegrass, but by the presence of herbicide resistance in ryegrass populations in Bizerte. These results were confirmed by the pot experiment method. The count of the surviving plants of ryegrass (30 DAT) in pot experiment method revealed that 70% of ryegrass populations are resistant to both herbicides inhibitors (ACCase and ALS). Similarly, the percentage of reduction in fresh weight of ryegrass, compared to untreated control, showed over 80% of the ryegrass populations was resistant to ACCase inhibitor herbicides and to ALS inhibitor herbicides.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84973199","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: 2

Persistence of Quizalofop Ethyl in Soil and Safety to Ground Nut by Ultrasonic Bath Extraction and HPLC-DAD Detection 乙基吡虫啉在土壤中的残留及对花生的安全性

Journal of Research in Weed Science Pub Date : 2018-09-01 DOI: 10.26655/JRWEEDSCI.2018.9.1

P. Janaki, S. Bhuvanadevi, M. Dhananivetha, P. MuraliArthanari, C. Chinnusamy

引用次数: 7

Effect of electron transport rate on sugarcane submitted to pre-emergence application of atrazine and tebuthiuron 苗期施用阿特拉津和丁硫脲对甘蔗电子传递速率的影响

Journal of Research in Weed Science Pub Date : 2018-09-01 DOI: 10.26655/JRWEEDSCI.2018.9.3

M. Girotto

{"title":"Effect of electron transport rate on sugarcane submitted to pre-emergence application of atrazine and tebuthiuron","authors":"M. Girotto","doi":"10.26655/JRWEEDSCI.2018.9.3","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2018.9.3","url":null,"abstract":"The objective of this work was to assess the photosynthetic efficiency of sugarcane crop, in pre-emergency application, of two herbicides inhibiting photosynthesis. For sugar cane cuttings planting (variety SP80-3280), pots with a capacity of 8 dm3 were used. Atrazine and tebuthiuron application was performed by using a stationary spray installed in laboratory conditions and after treatment application, plants were transported to a green house where were kept until the end of the trial. The reading of transport rate (ETR) was conducted in the middle portion of the youngest leaves of sugarcane with a portable fluorometer, with intervals for ETR assessment constituted by: 16, 17, 19, 25 and 30 days after herbicide application. It was also realized visual analysis of phytotoxiciy performed 30 days after application. The results showed that tebuthiuron herbicide caused greater reduction in the rate of electron transport than atrazine. In relation to herbicide symptoms, there was no significant difference between the studied herbicides. At the end of the work it could be verified that the chosen method using fluorometer to measure the rate of electron transport after herbicide application was adequate, allowing verifying sugar cane crop intoxication, even before any visual detection of herbicides performance in plants.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88792616","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

Effect of weed management practices on Kharif rice- A review 杂草管理措施对丰收稻的影响——综述

Journal of Research in Weed Science Pub Date : 2018-09-01 DOI: 10.26655/JRWEEDSCI.2018.9.4

Jagtap Dnyaneshwar, P. Pawar, M. Sutar, M. Jadhav, S. Pinjari, N. Meshram

引用次数: 4