scholarly journals Efficiency of some herbicides and manual weeding for weed control in irrigated Bt cotton

2018 ◽  
Author(s):  
R.K. Mathukia ◽  
B.K. Sagarka ◽  
P.R. Mathukia ◽  
N.V. Savaliya
Keyword(s):  
Weed Control ◽  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Dry Weight ◽  
Cyperus Rotundus ◽  
Growth And Yield ◽  
Cotton Field ◽  
Bt Cotton ◽  
Seed Cotton ◽  
Yield Attributes

To evaluate the efficacy of some pre and post-emergence herbicides for weed control in Bt cotton (var. Beejdhan 2), a field experiment was conducted during rainy seasons of 2014-15, 2015-16 and 2016-17 at Junagadh (Gujarat, India). The dominant weed flora in cotton field were Digera arvensis, Eluropus villosus, Cyperus rotundus, Cynodon dactylon, Echinochloa crusgalli, Chenopodium album, Convolvulus arvensis, Trianthema monogyna, Amaranthus spinosus, Commelina benghalensis and Asphodelus tenuifolius. The results revealed that treatments viz., hand weeding (HW) and interculturing (IC) at 30, 60 and 90 DAS, pendimethalin 0.9 kg ha-1 as pre-emergence fb HW and IC at 30 and 60 DAS, and pendimethalin 0.9 kg ha-1 as pre-emergence fb quizalofop 40 g ha-1 as post-emergence at 45 DAS were found superior to the unweeded check in enhancing growth and yield attributes viz., plant height, number of monopodial and sympodial branches plant-1, number of bolls plant-1, single boll weight and seed cotton weight plant-1 and ultimately increased seed cotton and stalk yields. These treatments also recorded lower dry weight of weeds and weed index along with higher weed control efficiency, net return and B:C ratio as compared to unweeded check.

scholarly journals Efficacy of pre and post-emergence herbicides on growth and yield of Wheat (Triticum aestivum L.) under Doon Valley of Uttarakhand

2020 ◽  
Vol 1 (2) ◽  
pp. 109-114
Author(s):  
Sanket Prabhakar Pokharkar ◽  
◽  
Pratap Jambuvant Khose ◽  
Prashant Balashaheb Shinde
Keyword(s):  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Dry Weight ◽  
Triticum Aestivum L ◽  
Growth And Yield ◽  
Cost Ratio ◽  
Weed Species ◽  
Yield Attributes ◽  
Growing Period ◽  
Hand Weeding

A field experiment was directed during Rabi season 2018-2019 at experimental farm of Doon (P.G.) College of Agriculture Science and Technology, Selaqui, Dehradun (Uttarakhand) using pre-and post-emergence herbicides combined with Hand Weeding for successfully controlling of weeds, their result on yield and production economics on Wheat (Triticum asetivum L.) variety used ‘Unnat PBW-343’. The dominant weed species present in field were Phalaris minor, Cynodon dactylon (L.) amongst dicot weeds like as Chenopodium album, Coronopus didymus, Fumaria parviflor, Medicago denticulate, Malva praviflora Vicia, Sativa Rumex debtatus, Sisymbrium irio among monocot, were observed during growing period. Lowest weed dry weight was observed in hand weeding at 30 and 60 Days after sowing. Higher Weed control efficiency up to (86.31 %) was recorded by Hand weeding at 30 and 60 Days after sowing. The treatment pendimethalin fb Sulfosulfuron @ 1 + 0.018 kg a.i.ha-1 P.E at 2 DAS and PoE at 30 DAS (T6) recorded greater yield attributes and seed and Stover yield (2540 kg/ha and 2668 kg/ha) and maximum net monetary return (Rs 36250) and Benefit: Cost ratio and 1.86.

Bio-Efficacy of different tank mix herbicides for weed control in soybean [Glycine max (L.) Merrill]

2018 ◽  
Author(s):  
Jai Prakash Bhimwal ◽  
Arvind Verma ◽  
Virendra Nepalia ◽  
Versha Gupta
Keyword(s):  
Weed Control ◽  
Cynodon Dactylon ◽  
Cyperus Rotundus ◽  
Control Treatment ◽  
Yield Attributes ◽  
Commelina Benghalensis ◽  
Trianthema Portulacastrum ◽  
Glycine Max L ◽  
Herbicide Mixtures ◽  
Quizalofop Ethyl

A field experiment was conducted at the Rajasthan College of Agriculture, MPUAT, Udaipur during Kharif season 2015 and 2016 to adjudge the efficacy of different herbicide and herbicide mixtures against weeds in soybean. Monocot weeds were predominant (55.15%) in the experimental field compared with dicot weeds (44.85%). However, Echinochloa colona (41.56%) and Trianthema portulacastrum (33.16%) were predominant in soybean but, other weeds (Cyperus rotundus, Cynodon dactylon, Commelina benghalensis, Digera arvensis, Amaranthus viridis, Physalis minima, Corchorus spp.) were also present at 60 DAS. Among different weed control treatments, post-emergence and tank mix combination of propaquizafop + imazethapyr (75+75 g ha-1) and imazethapyr + quizalofop-ethyl (75+60 g ha-1) at 21 DAS were most effective in respect of reducing weed density, weed biomass, nutrient removal by weed and promote yield attributes and yield and quality of soybean as compared to rest of weed control treatment.

scholarly journals Effect of Herbicide in Controlling Broadleaf and Sedge Weeds in Wheat (Triticum aestivum L.)

2016 ◽  
Vol 13 (2) ◽  
pp. 54-61 ◽  
Author(s):  
M M Kamrozzaman ◽  
M A H Khan ◽  
S Ahmed ◽  
A F M Ruhul Quddus
Keyword(s):  
Weed Control ◽  
Cynodon Dactylon ◽  
Dry Weight ◽  
Cyperus Rotundus ◽  
Cost Ratio ◽  
Weed Species ◽  
Wheat Field ◽  
Control Efficiency ◽  
Weed Control Efficiency ◽  
Hand Weeding

The study was conducted to assess the effectiveness of herbicide for controlling of weeds in wheat field at FSRD Site, Hatgobindapur, Faridpur during rabi 2011-12 and 2012-13. The experiment was laid out in a RCB design with five replications. There were four treatments viz. U46D fluid, ronstar 25 EC, one hand weeding and control (no weeding). Seven weed species were found in the plots and Cyperus rotundus, Cynodon dactylon, Chenopodium album were the most important weed species. Weed density and dry weight were affected significantly by different treatments. The highest weed dry weight was obtained in control while the lowest dry weight and the highest weed control efficiency were obtained from ronstar 25EC@1 ml/liter water against all types of weed species. Weed control efficiencies of ronstar 25EC against broad leaf, sedge and grass were 92, 86 and 64 %, respectively over control. The lowest weed control efficiency was obtained from one hand weeding treatment, which might be due to lack of proper weeding. Ronstar 25EC produced the highest grain (4.33 t/ha) and straw yields (4.38 t/ha) which were statistically identical to those of U46D fluid. The highest harvest index (49.71%) was found in ronstar 25EC and the lowest (41.89%) was obtained in control. The highest benefit cost ratio (2.30) was obtained from ronstar 25EC that was much higher than hand weeding (1.69). The lowest BCR (1.58) was recorded from the control. It was concluded that herbicide could be a viable alternative of manual weed control practices in wheat cultivation.DOI: http://dx.doi.org/10.3329/agric.v13i2.26588The Agriculturists 2015; 13(2) 54-61

scholarly journals Effects of Cover Methods and Nitrogen Levels on the Growth and Yield of Tomato

2021 ◽  
Vol 4 (2) ◽  
pp. 1021-1033
Author(s):  
Nguyen Thi Loan ◽  
Tran Thi My Can
Keyword(s):  
Yield Components ◽  
Field Experiments ◽  
Block Design ◽  
Tomato Fruit ◽  
Dry Weight ◽  
Fruit Yield ◽  
Growth And Yield ◽  
Plastic Mulch ◽  
Yield Attributes ◽  
Black Plastic

To study the effects of cover methods and nitrogen (N) levels on the growth and yield components of tomato Cv. Pear F1, field experiments with a 4x3 factorial design were conducted in the 2019 spring and winter seasons using a randomized complete block design with three replications. The cover methods included four treatments: bare soil (BS), black plastic mulch (BPM), transparent polypropylene row cover (RC), and a combination of BPM and RC (BPMRC) with the RC removed approximately 30 days after transplanting. Nitrogen (N) was applied at three levels (150, 180, and 210 kg N ha-1). Using BPM and RC generally led to an increased air temperature, air humidity, soil moisture, and soil temperature compared to the BS treatment. Higher N rates (180 and 210 kg N ha-1) did not result  in different tomato fruit sizes and fruit weights but positively increased fruit yield and quality (Brix values and fruit dry weight) as compared to the 150 kg N ha-1 addition. The cover methods positively affected the yield components and fruit yield of tomato as well as the fruit characteristics compared to the BS treatment. Using cover materials (BPM and RC) combined with a higher N application significantly increased the yield attributes and fruit yield. The highest fruit yield was achieved under the mulching treatment by black plastic (BPM treatment) combined with a 210 kg N ha-1 application, resulting in 50.90 tons ha-1 in the spring and 58.27 tons ha-1 in the winter.

scholarly journals Evaluation of Different Weed Management Practices on Growth Variables and Yield of Wheat Varieties

2020 ◽  
pp. 7-30
Author(s):  
Md. Golam Mostafa ◽  
Syed Arvin Hassan ◽  
Md. Ehsanul Haq ◽  
Md. Ahasan Habib ◽  
Kaniz Fatema ◽  
...  
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Management Practices ◽  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Cyperus Rotundus ◽  
Alternanthera Philoxeroides ◽  
Weed Species ◽  
Wheat Varieties ◽  
Hand Weeding

A field experiment was conducted in medium fertile soil at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November 2017 to April 2018 in Rabi season with a view to evaluate the performance of wheat varieties under different weed control methods. The experiment was carried out with three varieties i.e. BARI Gom-28, BARI Gom-29 and BARI Gom-30 in the main plot and five weed management methods viz. control (no weeding), two hand weeding at 20 and 40 DAS, Panida 33EC (Pendimethalin) @ 2000 ml ha-1 at 5 DAS pre-emergence, Afinity 50.75WP (Isoproturon) 1500 g ha-1 at 25 DAS as post-emergence herbicide and Panida 33EC (Pendimethalin) @ 2000 ml ha-1 at 5 DAS + Afinity 50.75WP (Isoproturon)1500 g ha-1 at 25 DAS in the sub plot in split plot design. Nine different major weed species were found in the field such as Cynodon dactylon, Cyperus rotundus, Echinochloa colonum, Eleusine indica, Chenopodium album, Alternanthera philoxeroides, Brassica kaber, Leliotropium indicum, Vicia sativa. Results reveled that BARI Gom-30 contributed the highest grain yield 3.01 tha-1. Pre-emergence application of Panida 33EC controlled weeds significantly which showed highest growth followed by yield achieved in wheat. BARI Gom-30 in combination with Panida 33EC produced the highest grain yield 3.52 tha-1 while the lowest grain yield 2.09 t ha-1 was obtained from BARI Gom-28 with no weeding treatment. Results reveled that Panida 33EC (pre-emergence) was found more effective to controlling weeds in wheat. Results of the study finally reveled that Panida 33EC might be considered as a feasible option for combating weed and ensuring higher yield in wheat cultivation.

scholarly journals Pengaruh Herbisida Metil Metsulfuron dan Kombinasinya pada Pengendalian Gulma Tanaman Tebu (Saccharum officinarum L.)

2021 ◽  
Vol 11 (2) ◽  
pp. 45
Author(s):  
Muhammad Aziz Setiawan ◽  
Sismita Sari ◽  
Mirodi Syofian
Keyword(s):  
Acetic Acid ◽  
Weed Control ◽  
Block Design ◽  
Residual Effect ◽  
Dry Weight ◽  
Saccharum Officinarum ◽  
Cyperus Rotundus ◽  
Cultivated Plants ◽  
Randomized Block Design ◽  
Community Coefficient

Weed control must use the right dose of herbicide so as not to leave a residual effect on cultivated plants and soil. This study ains to obtain the most appropriate dose of herbicide. Herbicide used in this study were methyl methulfuron and acetic acid combined. This study used a randomized block design (RCBD) witch 2 factors, factor A was asetic acid and factor B was methyl methulfuron and there were 12 treatment combinations with 3 replications. This research was conducted in the practicum of the Departement of Plantation Plant Cultivation, Lampung State Polytechnic. The total research plot was 36 experimentals units. The dosage levels levels of methyl methulfuron tested in this study were: 0%, 55%, 75%, and 105%. While the dose of acetic acid is: 0%, 50%, and 70%. Observations made in this study were weed vegetation analysis, weed cover percent, weed dry weight, Summed Dominance Ratio (SDR), and Community Coefficient Value (C). SDR values indicate that Panicum dicotomyflorum weed, Ricardia brasiliensis, Euphorbia heterophyla, and Cyperus rotundus are the dominant weeds. The results of this study indicate that there is no effect on the dose of methyl methulfuron herbicide, acetic acid, and interactions on methyl methulfuron herbicide and acetic acid on weed control in sugarcane fields (Saccharum officinarum L.).

scholarly journals EFFECTS OF POULTRY MANURE AND WEED CONTROL METHODS ON GROWTH AND YIELD OF SESAME VARIETIES

2020 ◽  
Vol 4 (2) ◽  
pp. 8-15
Author(s):  
O. Danmaigoro ◽  
M. I. Zamfara ◽  
H. Yakubu ◽  
Musa M. Umar
Keyword(s):  
Plant Height ◽  
Weed Control ◽  
Seed Yield ◽  
Poultry Manure ◽  
Dry Weight ◽  
Field Trials ◽  
Growth And Yield ◽  
Control Methods ◽  
Number Of Leaves ◽  
Sudan Savanna

Field trials were conducted in 2017 and 2018 wet seasons at Federal University Dutse Teaching and Research Farm (Latitude 11 46, 39”N and Longitude 9 20, 30”E) in the Sudan Savanna of Nigeria. To evaluate performance of sesame varieties as affected by poultry manure and weed control methods. The treatments consisted of five weed control treatments (pre-emergence application of ButachlorEC50%,  hoe weeding at 3WAS +pre-emergence butachlor EC50%, pre-emergence butachlor EC50%+hoe weeding at 3 and 6WAS, hoe weeding @ 3 and 6WAS and weedy check), three level of poultry manure (5, 10, and 15t/ha) and three sesame varieties (Ben 01, Yandev 55 and Ben 04E. The treatments were laid out in split plot design and replicated three times. The results indicated that weed control methods had significant effect (0.05) on the sesame growth and seed yield comparable to hoe weeding control at 3 and 6WAS where plant height number of leaves,  capsule number per plant and seed yield of sesame were significant higher with the application of butachlor plus hoe weeding at 3 and 6WAS compared to others weed control methods.  Poultry manure application on sesame as 15t/ha gave taller plant height, more number of leaves, higher sesame dry weight, longer capsule length and seed yield of sesame than the other rates while Ben 01(455 and 1043 ) perform better than the others two varieties (Yandev 498, 756 and Ben4E 522 and 765 ) for 2017 and 2018 seasons.  In conclusion,       

scholarly journals Herbicide Use Strategy and Its Economy as a Weed Management Option in Wheat Varieties

2021 ◽  
Vol 23 (2) ◽  
pp. 119-125
Author(s):  
MG Mostafa ◽  
MF Karim ◽  
HMMT Hossain
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Chenopodium Album ◽  
Cyperus Rotundus ◽  
Alternanthera Philoxeroides ◽  
Wheat Crop ◽  
Net Income ◽  
Wheat Varieties ◽  
Yield Attributes ◽  
Hand Weeding

Weed pressure is an additional threat to high temperature stressed wheat crop for its optimum production. A field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during Rabi 2017-2018 to assess the response of wheat varieties to different weed managements and its economical viability. As such three varieties i.e. BARI Gom-28, BARI Gom-29, and BARI Gom-30 along with five weed managements viz. control (no weeding), two hand weeding at 20 and 40 DAS, Panida 33EC (Pendimethalin) @ 2000 ml ha-1 spray at 5 DAS as pre-emergence, Affinity 50.75 WP (Isoproturon) @ 1500 g ha-1 spray at 25 DAS as post-emergence and Panida 33EC (Pendimethalin) @ 2000 ml ha-1 at 5 DAS + Affinity 50.75 WP (Isoproturon) @ 1500 g ha-1 at 5 & 25 DAS were treatment variables tested under split plot design.Cynodon dactylon, Cyperus rotundus, Echinochloa colona, Eleusine indica, Chenopodium album, Alternanthera philoxeroides, Brassica kaber, Leliotropium indicum, Vicia sativa,etc.werethe major weeds as determined based on their field intensity.Results revealed that BARI Gom-30 out-yielded other varieties with the highest grain yield (3.01 t ha-1). Pre-emergence application of Panida 33EC at 5 DAS proved as suitable weed management compared to other methods. BARI Gom-30 in combination with Panida 33EC @ 2000 ml ha-1 spray at 5 DAS as pre-emergence gave higher yield and yield attributes while BARI Gom-28 under no weeding check showed lower grain yield (2.09 t ha-1). Economically maximum gross return (Tk.75761.52ha-1),net income (Tk.21775.92ha-1), and BCR (1.41) were associated with Panida 33EC treatment when minimum values were obtained in the control plot (no weeding). So, the application of pre-emergence herbicide, Panida 33EC might be economically viable weed management ensuring a higher yield in wheat cultivation. Bangladesh Agron. J. 2020, 23(2): 119-125

Weed competition in maize (Zea mays L.) as a function of the timing of hand-hoeing weed control in the southern Guinea savanna zone of Nigeria

2012 ◽  
Vol 60 (3) ◽  
pp. 257-264 ◽  
Author(s):  
F. Takim
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Seedling Emergence ◽  
Dry Weight ◽  
Field Studies ◽  
Growth And Yield ◽  
Weed Competition ◽  
Maize Crop ◽  
Weed Interference ◽  
The University

Field studies were conducted in 2010 and 2011 at the Teaching and Research Farm of the University of Ilorin, Nigeria (9°29′ N, 4°35′ E) to evaluate the effect of early weed competition on the growth and yield of maize. The experiment was designed as a randomized complete block (RCBD) with a split-plot arrangement and three replications. The main plots consisted of three weed control treatments included weedy (no herbicide), grass weeds (pre-emergence atrazine) and broadleaf weeds (pre-emergence metolachlor), while the sub-plots consisted of six durations of weed infestation (3, 4, 5, 6, 7 and 8 weeks after emergence). The pre-emergence herbicides had a greater effect on weed density and weed dry weight. Weed seedling emergence and weed dry weight increased significantly with an increase in the duration of weed interference. The grasses and broadleaf weeds had a similar influence on the growth and grain yield of maize. Three to five weeks of weed interference gave similar grain yields, which were significantly higher than those obtained in plots that had 6-8 weeks of weed interference. These results suggest that the maize crop must be kept free of weeds for 6-8 weeks after the application of pre-emergence herbicide to minimize weed-crop competition and harvest a good grain yield.

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