Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00013.2
K. K. Dhatt, T. Thakur
{"title":"Effect of herbicides in managing weeds and on Gladiolus hybridus Hort. growth and flowering","authors":"K. K. Dhatt, T. Thakur","doi":"10.5958/0974-8164.2022.00013.2","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00013.2","url":null,"abstract":"","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89046841","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00059.4
C.P. Amaya, P. Karthikeyan
{"title":"Integrated weed management effect on yield and economics of cowpea","authors":"C.P. Amaya, P. Karthikeyan","doi":"10.5958/0974-8164.2022.00059.4","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00059.4","url":null,"abstract":"","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73012661","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00025.9
Deepak Pawar, D. Sreekanth, S. Chander, C. Chethan, S. Sondhia, P.K. Singh
Rice ( Oryza sativa L.) is one of the major staple food source for more than half of the global population. To attain the food needs of the world’s growing population, further increase in rice productivity is needed. To assess the sensitivity of agricultural output, a greater comprehension of the possible interactions amongst crops and weeds in the face of climate change, especially under elevated CO 2 (EC) and elevated temperature (ET), is essential. This study was conducted to quantify the influence of elevated temperature, CO 2 , weed density and their interactions on crop-weed competition, rice yield parameters and grain yield. The experiment was conducted in four separate Open Top Chambers (OTCs), viz . with ambient CO 2 (A), elevated CO 2 [550±50 ppm] (EC), elevated temperature (ambient±2 °C) (ET) and combined effect of elevated CO 2 and temperature (EC+ET) with and without weed competition. The EC alone enhanced the rice grain yield by 42.30% in weed-free conditions when compared to ambient CO 2 , however substantial change was not observed under ET. In the EC+ET condition, however, regardless of weeds presence or absence, crop output was reduced by 22.02 percent. Alternanthera paronychioides A. St.-Hil. competition caused rice yield reduction of 79.72, 83.04, 62.98 and 62.01% at A, EC, ET, EC+ET, respectively . The EC and ET interactions will certainly exert a profound influence on weed growth and competition against crops, which ultimately enhances crop yield losses in futuristic climate change scenario.
{"title":"Effect of weed interference on rice yield under elevated CO2 and temperature","authors":"Deepak Pawar, D. Sreekanth, S. Chander, C. Chethan, S. Sondhia, P.K. Singh","doi":"10.5958/0974-8164.2022.00025.9","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00025.9","url":null,"abstract":"Rice ( Oryza sativa L.) is one of the major staple food source for more than half of the global population. To attain the food needs of the world’s growing population, further increase in rice productivity is needed. To assess the sensitivity of agricultural output, a greater comprehension of the possible interactions amongst crops and weeds in the face of climate change, especially under elevated CO 2 (EC) and elevated temperature (ET), is essential. This study was conducted to quantify the influence of elevated temperature, CO 2 , weed density and their interactions on crop-weed competition, rice yield parameters and grain yield. The experiment was conducted in four separate Open Top Chambers (OTCs), viz . with ambient CO 2 (A), elevated CO 2 [550±50 ppm] (EC), elevated temperature (ambient±2 °C) (ET) and combined effect of elevated CO 2 and temperature (EC+ET) with and without weed competition. The EC alone enhanced the rice grain yield by 42.30% in weed-free conditions when compared to ambient CO 2 , however substantial change was not observed under ET. In the EC+ET condition, however, regardless of weeds presence or absence, crop output was reduced by 22.02 percent. Alternanthera paronychioides A. St.-Hil. competition caused rice yield reduction of 79.72, 83.04, 62.98 and 62.01% at A, EC, ET, EC+ET, respectively . The EC and ET interactions will certainly exert a profound influence on weed growth and competition against crops, which ultimately enhances crop yield losses in futuristic climate change scenario.","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83801053","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00050.8
Neeshu Joshi, S. Joshi, J. K. Sharma, H. Shekhawat, U. Shukla
{"title":"Efficacy of sequential application of pre- and post-emergence herbicides for weed management in sesame","authors":"Neeshu Joshi, S. Joshi, J. K. Sharma, H. Shekhawat, U. Shukla","doi":"10.5958/0974-8164.2022.00050.8","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00050.8","url":null,"abstract":"","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80840857","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00066.1
B. Chauhan
{"title":"Weed Biology: An Important Science to Develop Effective Weed Management Strategies","authors":"B. Chauhan","doi":"10.5958/0974-8164.2022.00066.1","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00066.1","url":null,"abstract":"","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87893857","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00030.2
Sonaka Ghosh, T. K. Das, Y. Shivay, K. Bandyopadhyay, S. Sudhishri, A. Bhatia, Dipankar Biswas, M. Yeasin, Sourav Ghosh
There has been a growing trend for achieving sustainable crop intensification without jeopardizing land productivity through conservation agriculture (CA). The CA has paved the way for cultivation of pulses in diverse cropping systems. A field experiment was conducted at ICAR-Indian Agricultural Research Institute, New Delhi during 2018-19 and 2019-20 cropping cycle with summer greengram in maize-wheat system to assess the effects of CA on weed interference, crop productivity and resource use efficiency. Results showed that CA-based practices with residue retention resulted in a considerable reduction in weed density and biomass when compared to conventional tillage (CT). Greengram yield parameters in CA were higher than in CT. The permanent broad bed (PBB) with residue retention (R) and recommended 100% N application (100N) (~PBB+R+100N) gave ~56% higher greengram grain yield than CT with considerably higher water productivity, nutrient-use efficiency and net returns. The adoption of CA practice involving PBB+R in greengram led to higher weed control efficiency and was more productive, remunerative and irrigation water-use efficient. Thus, it could potentially boost up the greengram productivity, profitability and resource-use efficiency under maize-wheat-greengram system in north-western Indo-Gangetic Plains (IGP) of India.
通过保护性农业(CA)在不损害土地生产力的情况下实现可持续作物集约化的趋势日益明显。该项目为在不同的种植系统中种植豆类铺平了道路。在2018-19和2019-20两个种植周期，在新德里icar -印度农业研究所(icar - india Agricultural Research Institute)进行了夏绿玉米-小麦系统的田间试验，评估了CA对杂草干扰、作物生产力和资源利用效率的影响。结果表明，与传统耕作(CT)相比，基于ca的秸秆保留做法导致杂草密度和生物量显著减少。与CT相比，CA的Greengram产量参数更高。留渣永久宽床(PBB)和推荐100%施氮(100N) (~PBB+R+100N)的绿粒产量比连续处理高56%，水分生产力、养分利用效率和净收益显著提高。在绿化带中采用PBB+R的CA做法，除草效率更高，产量更高，收益更高，灌溉用水效率更高。因此，它可以潜在地提高印度西北部恒河平原(IGP)玉米-小麦-绿豆系统下的绿豆生产率、盈利能力和资源利用效率。
{"title":"Weeds response and control efficiency, greengram productivity and resource-use efficiency under a conservation agriculture-based maize-wheat-greengram system","authors":"Sonaka Ghosh, T. K. Das, Y. Shivay, K. Bandyopadhyay, S. Sudhishri, A. Bhatia, Dipankar Biswas, M. Yeasin, Sourav Ghosh","doi":"10.5958/0974-8164.2022.00030.2","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00030.2","url":null,"abstract":"There has been a growing trend for achieving sustainable crop intensification without jeopardizing land productivity through conservation agriculture (CA). The CA has paved the way for cultivation of pulses in diverse cropping systems. A field experiment was conducted at ICAR-Indian Agricultural Research Institute, New Delhi during 2018-19 and 2019-20 cropping cycle with summer greengram in maize-wheat system to assess the effects of CA on weed interference, crop productivity and resource use efficiency. Results showed that CA-based practices with residue retention resulted in a considerable reduction in weed density and biomass when compared to conventional tillage (CT). Greengram yield parameters in CA were higher than in CT. The permanent broad bed (PBB) with residue retention (R) and recommended 100% N application (100N) (~PBB+R+100N) gave ~56% higher greengram grain yield than CT with considerably higher water productivity, nutrient-use efficiency and net returns. The adoption of CA practice involving PBB+R in greengram led to higher weed control efficiency and was more productive, remunerative and irrigation water-use efficient. Thus, it could potentially boost up the greengram productivity, profitability and resource-use efficiency under maize-wheat-greengram system in north-western Indo-Gangetic Plains (IGP) of India.","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76383484","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00033.8
Ajaya Kashyap, H. Kushwaha, H. Mishra
A filed experiment was conducted at Mahatma Gandhi Chitrakoot Gramodaya Vishwavidyalaya, Chitrakoot, Satna, Madhya Pradesh during winter ( Rabi ) season of 2019-20 and 2020-21 to assess the efficacy of herbicides on production and profitability of chickpea ( Cicer arietinum L.). The experiment was laid out in a randomized block design with ten treatments and three replications. The crop was sown as per the package of practices recommended for zone Kymore Plateau of Madhya Pradesh. The major monocot weed was Cynodon dactylon and dominant dicot weed was Chenopodium album at 30 days after sowing (DAS). At 30 DAS, significantly lower weed density (7.75/m 2 ) and biomass (2.70 g/m 2 ) were recorded with post-emergence application (PoE) of fomesafen (11.1% W/W) 220 g + fluazifop-p-butyl (11.1% W/W) 220 g/ha PoE at 20 DAS, followed by imazethapyr (35%) + imazamox (35%) 100 g/ha PoE at 20 DAS. The lowest weed index was noted with imazethapyr 55 g/ha PoE followed by pre-emergence application (PE) of pendimethalin 0.75 kg/ha and fomesafen 220 g + fluazifop-p-butyl 220 g/ha PoE at 30 DAS. Higher weed control efficiency (WCE) at 30 DAS was recorded with fomesafen 220 g + fluazifop-p-butyl 220 g/ha (70.6%) followed by hand weeding at 20 and 40 DAS (57.1%). However, fomesafen 220 g + fluazifop-p-butyl 220 g/ha PoE at 20 DAS and imazethapyr + imazamox 100 g/ha PoE at 20 DAS caused severe injury to chickpea plants and even mortality of a few plants. Significantly higher 1000 seed weight (183.0 g) and grain yield (1.79 t/ha) were observed with imazethapyr 55 g/ha PoE which was statistically at par with weed free check. Significantly higher net returns ( 70746/ha) and B:C ratio (3.97) were recorded with imazethapyr 55 g/ha PoE ( 70746/ha), followed by pendimethalin 0.75 kg/ha PE. The monetary efficiency ( 589.5/ha/day) of imazethapyr 55 g/ha PoE was statistically at par with weed free ( 541.3/ha/day) and was significantly higher than all other treatments.
{"title":"Effect of herbicides on weeds, yield and economics of chickpea","authors":"Ajaya Kashyap, H. Kushwaha, H. Mishra","doi":"10.5958/0974-8164.2022.00033.8","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00033.8","url":null,"abstract":"A filed experiment was conducted at Mahatma Gandhi Chitrakoot Gramodaya Vishwavidyalaya, Chitrakoot, Satna, Madhya Pradesh during winter ( Rabi ) season of 2019-20 and 2020-21 to assess the efficacy of herbicides on production and profitability of chickpea ( Cicer arietinum L.). The experiment was laid out in a randomized block design with ten treatments and three replications. The crop was sown as per the package of practices recommended for zone Kymore Plateau of Madhya Pradesh. The major monocot weed was Cynodon dactylon and dominant dicot weed was Chenopodium album at 30 days after sowing (DAS). At 30 DAS, significantly lower weed density (7.75/m 2 ) and biomass (2.70 g/m 2 ) were recorded with post-emergence application (PoE) of fomesafen (11.1% W/W) 220 g + fluazifop-p-butyl (11.1% W/W) 220 g/ha PoE at 20 DAS, followed by imazethapyr (35%) + imazamox (35%) 100 g/ha PoE at 20 DAS. The lowest weed index was noted with imazethapyr 55 g/ha PoE followed by pre-emergence application (PE) of pendimethalin 0.75 kg/ha and fomesafen 220 g + fluazifop-p-butyl 220 g/ha PoE at 30 DAS. Higher weed control efficiency (WCE) at 30 DAS was recorded with fomesafen 220 g + fluazifop-p-butyl 220 g/ha (70.6%) followed by hand weeding at 20 and 40 DAS (57.1%). However, fomesafen 220 g + fluazifop-p-butyl 220 g/ha PoE at 20 DAS and imazethapyr + imazamox 100 g/ha PoE at 20 DAS caused severe injury to chickpea plants and even mortality of a few plants. Significantly higher 1000 seed weight (183.0 g) and grain yield (1.79 t/ha) were observed with imazethapyr 55 g/ha PoE which was statistically at par with weed free check. Significantly higher net returns ( 70746/ha) and B:C ratio (3.97) were recorded with imazethapyr 55 g/ha PoE ( 70746/ha), followed by pendimethalin 0.75 kg/ha PE. The monetary efficiency ( 589.5/ha/day) of imazethapyr 55 g/ha PoE was statistically at par with weed free ( 541.3/ha/day) and was significantly higher than all other treatments.","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84689580","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00035.1
S. Gautam, Archana Sharma
Herbal extract application on textile substrates is in great demand around the globe. In this study, a natural dye extracted from Lantana camara L. leaves' extract was tested to assess the ultra-violet protective properties on cotton fabric using direct dip dyeing technique. Extraction of phytochemicals was carried out using ethanol and aqueous solvents. Total phenolic content (TPC) quantification revealed that TPC of L. camara leaves' extracts were highest in ethanolic extraction as compared to aqueous extracts. The ultra violet protection factor (UVF) values ranged between good to excellent for the cotton fabrics. A cotton fabric treated in a solution containing cross linking agent showed a shade of light yellowish green. The colour fastness against light, washing, rubbing and perspiration of cotton fabric treated in extracted dye solution as well as treated with citric acid as cross-linking agent showed good to very good colour fastness properties (4–5). The results confirmed that natural dye from Lantana camara extract have potential for application in fabric dyeing and also helpful in producing UV protective fabric.
{"title":"Invasive weed Lantana utilization for textile finishes","authors":"S. Gautam, Archana Sharma","doi":"10.5958/0974-8164.2022.00035.1","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00035.1","url":null,"abstract":"Herbal extract application on textile substrates is in great demand around the globe. In this study, a natural dye extracted from Lantana camara L. leaves' extract was tested to assess the ultra-violet protective properties on cotton fabric using direct dip dyeing technique. Extraction of phytochemicals was carried out using ethanol and aqueous solvents. Total phenolic content (TPC) quantification revealed that TPC of L. camara leaves' extracts were highest in ethanolic extraction as compared to aqueous extracts. The ultra violet protection factor (UVF) values ranged between good to excellent for the cotton fabrics. A cotton fabric treated in a solution containing cross linking agent showed a shade of light yellowish green. The colour fastness against light, washing, rubbing and perspiration of cotton fabric treated in extracted dye solution as well as treated with citric acid as cross-linking agent showed good to very good colour fastness properties (4–5). The results confirmed that natural dye from Lantana camara extract have potential for application in fabric dyeing and also helpful in producing UV protective fabric.","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"149 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86783510","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00070.3
P. Bhowmik
{"title":"Bioavailability of Allelochemicals in Soil Environment Under Climate Change: Challenges and Perspectives","authors":"P. Bhowmik","doi":"10.5958/0974-8164.2022.00070.3","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00070.3","url":null,"abstract":"","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80825968","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}
Pub Date : 2022-01-01DOI: 10.5958/0974-8164.2022.00037.5
B. Meena, D. S. Meena, B. Ram, G. Nagar, S. Dhayal, H. Meena
A field experiment was conducted at Agricultural Research Station, Ummedganj, Kota, Rajasthan during rainy (Kharif) season, 2019 to study the comparative efficacy of pre- and post-emergence herbicides in managing weeds and improving productivity of soybean ( Glycine max L. Merrill). The experimental field was infested with grassy weeds (48.60%), broad-leaved weeds (39.49%) and sedges (11.91%). Cynodon dactylon (L.) Pers., Eleusine indica (L.) Gaertn., Echinochloa crus-galli (L.) Beauv and Echinochloa colona (L.) Link among grassy weeds, Boerhavia diffusa L. nom. cons . , Convolvulus arvensis L., Commelina benghalensis L., Digera arvensis Forsk., Celosia argentea L. among broad-leaved weeds and Cyperus rotundus L., the sedge were major associated weeds. Maximum soybean seed yield (1800 kg/ha) and higher weed control efficiency (77.79%) were recorded with hand weeding twice at 20 and 40 days after sowing (DAS) followed by post-emergence application of sodium-acifluorfen 16.5% + clodinafop- propargyl 8% (premix) 165 + 80 g/ha (1550 kg/ha).
2019年雨季(Kharif)，在拉贾斯坦邦Kota Ummedganj农业研究站进行了田间试验，研究了出苗前除草剂和出苗后除草剂在控制杂草和提高大豆(Glycine max L. Merrill)产量方面的比较效果。试验田以禾本科杂草(48.60%)、阔叶草(39.49%)和莎草(11.91%)为主。长爪龙(L.)珀耳斯。， Eleusine indica (L.)Gaertn。，刺青藻(L.)波氏和棘球藻(L.)草类杂草间的联系。，卷叶草，长尾草，长尾草。在阔叶杂草中，以莎草为主要伴生杂草;播种后20天和40天进行两次手除草，出苗后施用16.5%的氟化钠+ 8%的氯硝磷-丙炔醇(预混剂)165 + 80 g/ha (1550 kg/ha)，大豆种子产量最高(1800 kg/ha)，防杂草效率最高(77.79%)。
{"title":"Effect of pre- and post-emergence herbicides on weeds and yield of soybean","authors":"B. Meena, D. S. Meena, B. Ram, G. Nagar, S. Dhayal, H. Meena","doi":"10.5958/0974-8164.2022.00037.5","DOIUrl":"https://doi.org/10.5958/0974-8164.2022.00037.5","url":null,"abstract":"A field experiment was conducted at Agricultural Research Station, Ummedganj, Kota, Rajasthan during rainy (Kharif) season, 2019 to study the comparative efficacy of pre- and post-emergence herbicides in managing weeds and improving productivity of soybean ( Glycine max L. Merrill). The experimental field was infested with grassy weeds (48.60%), broad-leaved weeds (39.49%) and sedges (11.91%). Cynodon dactylon (L.) Pers., Eleusine indica (L.) Gaertn., Echinochloa crus-galli (L.) Beauv and Echinochloa colona (L.) Link among grassy weeds, Boerhavia diffusa L. nom. cons . , Convolvulus arvensis L., Commelina benghalensis L., Digera arvensis Forsk., Celosia argentea L. among broad-leaved weeds and Cyperus rotundus L., the sedge were major associated weeds. Maximum soybean seed yield (1800 kg/ha) and higher weed control efficiency (77.79%) were recorded with hand weeding twice at 20 and 40 days after sowing (DAS) followed by post-emergence application of sodium-acifluorfen 16.5% + clodinafop- propargyl 8% (premix) 165 + 80 g/ha (1550 kg/ha).","PeriodicalId":13467,"journal":{"name":"INDIAN JOURNAL OF WEED SCIENCE","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89931884","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}
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