{"title":"Effect of different herbicides on weed control in cotton and soybean intercropping system","authors":"A. Jadhav, G. Bhosale","doi":"10.26655/jrweedsci.2018.9.6","DOIUrl":"https://doi.org/10.26655/jrweedsci.2018.9.6","url":null,"abstract":"A field experiment was conducted at Cotton Research Scheme Farm, VNMKV, Parbhani during kharif season 2015-16 and 2016-17 in randomized block design with seven treatments in three replicates. Sowing was done by dibbling with spacing 120 cm x 30 cm for Bt.cotton and for soybean 60cm x 5cm. The result indicated that, spraying of pre emergence application of Oxyflurofen 23.5% EC at 0.1 kg/ha ai followed by hand weeding and hoeing at 6 week after sowing (WAS) recorded significantly highest seed cotton equivalent yield (1868 kg ha-1), gross monetary returns (8159 Rs/ha) and net monetary returns (39024 Rs/ha) over rest of the treatment except it was on par with application of pre emergence application of Pendimethalin 30% EC at 0.75 kg/ha ai with hand weeding and hoeing at 6 WAS and Alachlor 50 % EC at 2.0 kg/ha ai followed by hand weeding and hoeing at 6 WAS. The treatment Spraying of pre emergence application of Oxyflurofen 23.5% EC at 0.1kg/ha ai followed by hand weeding and hoeing at 6 WAS was found productive and profitable followed by Pendimethalin 30% EC at 0.75 kg/ha ai with hand weeding and hoeing at 6 WAS and Alachlor 50 % EC at 2.0 kg/ha ai followed by hand weeding and hoeing at 6 WAS.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81527670","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}
{"title":"Bioefficacy and Fate of Pendimethalin Residues in Soil and Mature Plants in Chickpea Field","authors":"S. Sondhia, P. Singh","doi":"10.26655/JRWEEDSCI.2018.6.4","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2018.6.4","url":null,"abstract":"In modern agriculture, use of herbicides has become indispensable for managing weeds in cultivated lands, due to the scarcity of labors in almost all parts of the globe. Herbicides provide effective weed control in agriculture, yet their continuous and excessive use may pose serious health and environment threats. Pendimethalin is proved to be a very effective pre-emergence herbicide for the control of annual weeds in leguminous and other vegetable crops. Therefore bio-efficacy and residues of pendimethalin were determined in chickpea (Cicer arietinum L.) crop at farmers’ field. Pendimethalin was applied at 796 g ha-1 as a pre-emergence herbicide to control weeds in chickpea fields. Pendimethalin was found effective against weeds viz. Vicia sativa, Convolvulus arvensis, Chenopodium album, and Lathyrus sativa. Terminal residues of pendimethalin were found below","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81532631","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}
{"title":"Biological control potential of Spermophagus sericeus Geoffroy, 1785 (Coleoptera: Chrysomelidae) against field bindweed as the first report from Iran","authors":"M. Mehdizadeh, G. Asadi, A. Delobel","doi":"10.26655/JRWEEDSCI.2018.6.5","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2018.6.5","url":null,"abstract":"Compare other countries studies associated with field bindweed (Convolvulus arvensis L.) biological control is too short in Iran. Field bindweed is a major weed of several field crops. During a survey, we focus to finding natural enemies of this weed in Khorasan Razavi province for two years. This paper reports the presence of a seed beetle Spermophagus sericeus Geoffroy as a major natural enemy against field bindweed (Convolvulus arvensis L.) in northeast of Iran. Samples of field bindweeds capsules and seeds collected in tomato fields at two locations in that region. Results showed that the reproductive organs of field bindweed were severely damaged, where 76 and 62 percent of capsules and seeds were infested by S. sericeus respectively. Our findings showed the high level control of field bindweed by S. sericeus and this beetle can be considered as a proper bio control agent for this weed in Iran. However more studies about host specificity of this beetle should be performed.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"65 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86805027","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}
A. Ghanbari, M. Mahallati, G. Mahmoudi, P. Yadegar
{"title":"Studying magnetic field and Bentazon on Kautsky curve of bean (phaseolus vulgaris L)","authors":"A. Ghanbari, M. Mahallati, G. Mahmoudi, P. Yadegar","doi":"10.26655/JRWEEDSCI.2018.6.3","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2018.6.3","url":null,"abstract":"Bentazon herbicide is a post-emergent herbicide and a photosynthesis inhibitor in broadleaf weed. However, different parameters of Bean Kautsky curve changed significantly. Seeds were treated magnetically at three levels normal, 100 mT and 150 mT (3 hours) and weed control (weeding (by hand), weed free (untreated), control by 25 percent herbicide, or 0.6 l.ha-1, 50 percent herbicide or 1.2 l.ha-1, and 100 percent herbicide or 2.5 l.ha-1. Due to the major paramagnetic components of bean seeds, affected the parameter minimum quantum yield of PS Π (Fv/Fm) significantly (p<0/01) as in the treatment of magnetic field 150 mT and 2.5 l.ha-1 herbicide decreased significantly (0.61) although Bentazon is a selective herbicide of bean. However, besides posing damage to photo-oxidation and center PS Π, 150 mT magnetic fields lengthened the time to reach maximum fluorescence (493.3) and maximized the stress to the parameter Fo and Fo/Fm. In the case that no herbicide was applied, it amounted to the maximum fluorescence at the least time (183.3). Also, in the absence of herbicides (both weeding and weed free), basic quantum efficiency were always normal (0.14 to 0.21); however, by using the herbicides, it exceeded its normal range. Therefore, the selective of the herbicide did not mean the immunity of the plant against the herbicide completely. In general, 100 mT magnetic fields were known to be an effective treatment for plant’s exposure to Bentazon herbicides and stronger field had the opposite effect.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91249994","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}
R. Fakhari, A. Tobeh, P. S. Ziveh, Ghorban Didehbaz Moghanlo, Behrouz Khalil Tahmasbi
{"title":"Effects of Cover crop residue management on corn yield and weed control","authors":"R. Fakhari, A. Tobeh, P. S. Ziveh, Ghorban Didehbaz Moghanlo, Behrouz Khalil Tahmasbi","doi":"10.26655/JRWEEDSCI.2018.6.2","DOIUrl":"https://doi.org/10.26655/JRWEEDSCI.2018.6.2","url":null,"abstract":"The use of cover crops can be considered as an effective method in sustainable agriculture through reducing herbicide use, improving soil and increasing crop yield. An experiment was conducted using randomized complete block design with three replications in Agricultural and natural resources research center of Ardabil (Moghan) in 2015-2016. Cover crops was considered as the main factor (mixed wheat + crimson clover, monoculture wheat and mixed (rye + wheat)) and mulch management as subplots and control (no cover crop use post-emergence herbicide Maister (Foramsulfuron + Idosulfuron 3.1% OD)). The results showed no significant difference between treatments in terms biomass production, the lowest weed biomass was related mixed of rye + wheat in both crop management methods. In wheat and wheat+ rye a significant decrease was observed in crop yield components possibly due to the release of allelopathic materials and soil properties, But the crimson clover mix of wheat + maize yield satisfactory beside weed control a good yield was obtained after the treatment with herbicide. The results showed that the effect of cover crop, crop management and their interaction except grain weight, were significant for ear dry weight, biological yield, number of rows per ear and number of kernels per ear. The highest values of grain yield, ear dry weight, biological yield, number of grains per ear was achieved in treatments clover + wheat and the least amount of yield and yield components of treated wheat was obtained in residues removed management.","PeriodicalId":16980,"journal":{"name":"Journal of Research in Weed Science","volume":"125 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80213739","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}