Effect of weed management and sulphur on weed dynamics, soybean (Glycine max) yield and associated quality traits

2017 ◽  
Author(s):  
K. K. Meena ◽  
V. Nepalia ◽  
Dilip Singh ◽  
Mahendra Sharma ◽  
B. Upadhyay
Keyword(s):  
Glycine Max ◽  
Weed Control ◽  
Weed Management ◽  
Dry Matter ◽  
Yield And Quality ◽  
Glycine Max L ◽  
Biological Yield ◽  
Main Plot ◽  
Weed Dynamics ◽  
Quizalofop Ethyl

A field experiment was conducted during rainy seasons of 2011 and 2012 at Udaipur to evaluate the effect of weed control and sulphur on yield and quality of soybean [Glycine max (L.) Merrill]. The twenty eight treatment combinations comprising 7 weed management treatments (weedy check, pendimethalin 1.0 kg ha-1 pre- emergence, quizalofop-ethyl 50 g ha-1 and imazethapyr 100 g ha-1 post-emergence at 15 DAS, pendimethalin, quizalofop-ethyl and imazethapyr followed by hoeing and weeding at 30 DAS) in main plot and 4 rates of sulphur application (00, 20, 40 and 60 kg ha1) in sub plot were laid out in split plot design with three replications. All weed control treatments reduced weed dry matter at harvest during both the years. Pendimethalin followed by hoeing and weeding at 30 DAS was significantly superior in reducing weed dry matter of broad-leaved, narrow-leaved and total weeds at harvest over rest of the treatments. All weed control treatments significantly enhanced straw and biological yield of soybean over weedy check. Pendimethalin followed by hoeing and weeding at 30 DAS produced significantly higher pooled seed (2168 kg ha-1), straw (3167 kg ha-1) and biological (5335 kg ha-1) yields compared to other treatments. Sulphur rates had no significant effect on weed dry matter at harvest. Across the years, increasing level of S application up to 40 kg ha-1 resulted in significantly increased straw yield, biological yield and harvest index of soybean. Increasing rate of sulphur application up to 40 kg ha-1 tended to significantly increase protein and oil yield.

Effect of weed control practices on weed dynamics, yield and economics of soybean [Glycine max (L.) Merrill]

2015 ◽  
Author(s):  
K. Nandini Devi ◽  
Kh. Lenin Singh ◽  
CNJS Arangba Mangang ◽  
N. Brajendra Singh ◽  
Herojit Singh Athokpam ◽  
...  
Keyword(s):  
Weed Control ◽  
Dry Matter ◽  
Block Design ◽  
Randomized Block Design ◽  
Glycine Max L ◽  
Chlorimuron Ethyl ◽  
Weed Dynamics ◽  
Hand Weeding ◽  
Quizalofop Ethyl ◽  
Weed Emergence

The experiment was laid out in randomized block design with three replications and eight weed control treatments viz., weedy check, polythene mulching as pre emergence (PE), pendimethalin30EC (PE), chlorimuron ethyl 9g ha-1as post emergence (POE), quizalofop ethyl 50g ha-1 (POE), imazethapyr 100g ha-1 as early post emergence (EPOE), one hand weeding at 40 days after sowing (DAS) and two hand weeding at 20 and 40 DAS. The results showed that polythene mulching had the lowest weed dry matter due to effectively suppression of weed emergence. It was followed by twice hand weeding at 20 and 40 days after sowing. Weed index was found to be the highest with weedy check (42.10%) followed by the pre-emergence application of pendimethalin (19.09%). The effect of herbicide applied as pre-emergence was subdued at this belated stage, which may possibly be on account of longer period after application and restricted effective residual period. Plant height, number of pods per plant and grain yield of soybean was found to be highest in the treatments twice hand weeding at 20 and 40 DAS as well as polythene mulching. However, the net return and B:C ratio was lower in comparison to imazethapyr and quizalofop ethyl due to higher cost of labour and polythene material respectively. On an average, the application of imazethapyr as early post emergence (3.17) and quizalofop ethyl (3.02) gave significantly highest B:C ratio than the other treatments for soybean.

scholarly journals Weed control in soybean (Glycine max L.) through resource management strategies and its influence on yield and nutrient uptake

2017 ◽  
Vol 9 (1) ◽  
pp. 539-543
Author(s):  
Aradhana Bali ◽  
B. R. Bazaya ◽  
Sandeep Rawal
Keyword(s):  
Resource Management ◽  
Nutrient Uptake ◽  
Weed Control ◽  
Weed Management ◽  
Management Strategies ◽  
Climatic Conditions ◽  
Glycine Max L ◽  
Effect On Yield ◽  
Hand Weeding ◽  
Quizalofop Ethyl

A field experiment was conducted during kharif season of 2011 at Research Farm, Sher-e-Kashmir University of Agricultural Sciences and Technology, Chatha, Jammu to evaluate the effect of weed management prac-tices on yield and nutrient uptake of soybean utilizing different resource management strategies. The lowest weed density and dry matter of weeds was recorded with hand weeding at 15 and 35 days after sowing (DAS) which was equally effective as imazethapyr @ 75 g ha -1 (PoE) fb hoeing at 35 DAS and quizalofop-ethyl @ 40 g ha-1 (PoE) fb hoeing at 35 DAS. All weed control treatments had significant effect on yield and nutrient up-take of soybean. Among the different weed control treatments, lowest N, P and K uptake by weeds were recorded in hand-weeding (15 and 35 DAS) which was statistically at par with imazethapyr @ 75 g ha -1 fb hoeing at 35 DAS. The maximum uptake by seed and straw were recorded in weed free which was statistically at par with twice hand weeding at 15 and 35 DAS, imazethapyr @ 75 g ha-1 fb hoeing at 35 DAS and quizalofop-ethyl @ 40 g ha-1 fb hoeing at 35 DAS. The highest seed and straw yield of soybean was harvested with hand-weeding (15 and 35 DAS) followed by imazethapyr @ 75 g ha -1 fb hoeing at 35 DAS. For the first time, soybean crop has been introduced in Jammu region for research purpose. Weed management varies with agro-climatic conditions. The study would be helpful to understand weed menace in this particular climatic condition of Jammu and to manage them combinedly and efficiently.

Effect of Different Weed Management Practices on Weed Dynamics, Productivity and Farm Profitability of Cluster Bean

2020 ◽  
Author(s):  
Vipin Kumar ◽  
O. P. Meena ◽  
M. R. Yadav ◽  
S. K. Goyal ◽  
A. K. Meena ◽  
...  
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Agricultural Research ◽  
Minimum Cost ◽  
Cluster Bean ◽  
Net Returns ◽  
Biological Yield ◽  
Weed Dynamics ◽  
Hand Weeding

The present study was conducted in kharif seasons of 2015, 2016 and 2017 at experimental farm of Rajasthan Agricultural Research Institute, Durgapura, Jaipur (Rajasthan) to study efficacy of different weed management practices in clusterbean. Three years result shows that compared to weedy check (6.82 m-2) application of Pendimethalin @ 0.75 kg a.i. ha-1 as PE fb one hand weeding recorded lowest weed density (3.58 m-2). Among herbicidal treatments, Pendimethalin @ 0.75kg a.i/ha as PE fb one hand weeding at 25 DAS (83.7%) and Pendimethalin @ 0.75 kg a.i./ha as PE+ Imazathapyr+ Imazamox @ 40g a.i./ha PoE (74.0%) recorded highest weed control efficiency. Likewise, application of Pendimethalin @ 0.75kg a.i/ha as PE fb one hand weeding at 25 DAS and Pendimethalin 0.75kg/ha at PE fb Imazathapyr + Imazamox @ 40g a.i. ha-1 recorded significantly higher seed (1136 kg ha-1 and 1009 kg ha-1), haulm (3304 kg ha-1 and 2943 kg ha-1) and biological yield (4440 kg ha-1 and 3953 kg ha-1), respectively over other herbicidal treatments. Economic evaluation indicated that application of Pendimethalin @ 0.75kg a.i/ha as PE fb one hand weeding at 25 and which was followed by with Pendimethalin @ 0.75 kg a.i./ha as PE+ Imazathapyr+ Imazamox@ 40g a.i./ha recorded, gross return (INR 55352 ha-1 and INR 49189 ha-1) net returns (INR 38852 ha-1 and INR 34289 ha-1) and B:C ratio (2.35 and 2.20), respectively. Whereas, minimum cost of cultivation (INR 10000 ha-1) and gross returns (INR 25632 ha-1), net returns (INR 15632 ha-1) and B:C ratio (1.56) were recorded under weed check. So looking to the laborious pressure of hand weeding, cost effectiveness ease of application of chemical herbicides, application of Pendimethalin 0.75 kg ha-1 fb one hand weeding can be an effective weed control option in cluster bean crop with higher seed and haulm yield under Semi-arid and Arid regions of Rajasthan.

scholarly journals Performance of different tank mix herbicides for broad-spectrum weed control in soybean [Glycine max (L.) Merrill]

2018 ◽  
Author(s):  
Jai Prakash Bhimwal ◽  
Arvind Verma ◽  
Versha Gupta ◽  
S.K. Meena ◽  
B.D. Malunjkar
Keyword(s):  
Weed Control ◽  
Nutrient Removal ◽  
College Of Agriculture ◽  
Yield Attributes ◽  
Weed Density ◽  
Yield And Quality ◽  
Glycine Max L ◽  
Herbicide Mixtures ◽  
Quizalofop Ethyl

A field experiment was conducted at the Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology -Udaipur during Kharif season 2015 and 2016 to test the efficacy of different herbicide and herbicide mixtures against weeds in soybean. Monocot weeds were predominant (57.68 %) in the experimental field compared to Broad leaved weeds (42.31 %). However, Echinochloa colona (40.55 %) and Corchorus olitorius (23.68%) were dominant in soybean at 30 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 improving yield attributes, yield and quality of soybean compared to other treatments. Highest seed yield (2271 kg ha-1), Haulm yield (3127 kg ha-1) of soybean and maximum net return ( 51550/ha) were also recorded with propaquizafop 75 g ha-1 + imazethapyr 75 g ha-1 followed by imazethapyr + quizalofop-ethyl (75+60 g ha-1). Further, they were also found responsible for highest uptake of N, P and K in soybean and lowest uptake of these plant nutrients by weeds.

scholarly journals Effect of Weed Management Practices on Weed Control, Yield and Economics of Soybean [Glycine max (L.) Merrill]

2020 ◽  
pp. 114-120
Author(s):  
R. K. Raj ◽  
K. K. Sinha ◽  
Shalu Kumari ◽  
Anup Kumar Choubey ◽  
Ashok Pandit ◽  
...  
Keyword(s):  
Glycine Max ◽  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Dry Weight ◽  
Cost Ratio ◽  
Control Efficiency ◽  
Weed Control Efficiency ◽  
Glycine Max L ◽  
Hand Weeding

The experiment was laid out Tirhut College of Agriculture, farm Dholi, Muzaffarpur, Bihar during kharif season 2016, to study the effect of weed management practices on weed control, yield and economics of soybean [Glycine max (L.)]. Hand weeding twice at 25 and 45 DAS was found most effective to control weeds in soybean and recorded lowest weed count, weed dry matter and highest weed control efficiency. Among herbicide, application of Pendimethalin 1.0 kg/ha as PE (Pre-emergance) and Imazethapyr 55 g/ha as PoE (Post-emergance) at 25 DAS was found to be more efficient and cost effective to reduce weed population/m2 (53.94 & 67.22), dry weight of weeds/m2 (21.16 & 45.86 g) an increased weed control efficiency (53.86 & 68.83%) significantly in both the stages 30 and 60 DAS. Beside it, Pendimethalin 1.0 kg/ha + Imazethapyr 55 g/ha at 25 DAS, Pendimethalin 1.0 kg/ha + one hand weeding at 40 DAS and hand weeding twice at 25 and 45 DAS were equally efficient in increasing the grain yield, straw yield, weed index and gross returns than control but net returns (39870/ha) and benefit-cost ratio (1.70) was obtained maximum only with Pendmethalin 1.0 kg/ha and Imazethapyr 55 g/ha at 25 DAS.

Machine learning algorithms to predict the dry matter loss of stored soybean grains ( Glycine max L.)

2021 ◽  
Author(s):  
Juliana Soares Zeymer ◽  
Felipe Guzzo ◽  
Marcos Eduardo Viana Araujo ◽  
Richard Stephen Gates ◽  
Paulo Cesar Corrêa ◽  
...  
Keyword(s):  
Machine Learning ◽  
Glycine Max ◽  
Dry Matter ◽  
Learning Algorithms ◽  
Machine Learning Algorithms ◽  
Dry Matter Loss ◽  
Glycine Max L

scholarly journals PHOSPHORUS NUTRITION OF SOYBEANS AS AFFECTED BY PLACEMENT OF FERTILIZER PHOSPHORUS

1983 ◽  
Vol 63 (2) ◽  
pp. 199-210 ◽  
Author(s):  
C. W. BULLEN ◽  
R. J. SOPER ◽  
L. D. BAILEY
Keyword(s):  
Glycine Max ◽  
Total Phosphorus ◽  
Dry Matter ◽  
Field Experiments ◽  
Seedling Emergence ◽  
Phosphorus Uptake ◽  
Growth Chamber ◽  
Grain Yields ◽  
Chamber Experiment ◽  
Glycine Max L

Growth chamber and field experiments were conducted on Southern Manitoba soils, low in available soil phosphorus, to investigate the effects of various placement methods and levels of phosphorus fertilizer on soybean (Glycine max (L.) Merrill ’Maple Presto’). It was found that soybean responded well to applied phosphorus on low-P soil in growth chamber studies. In the first growth chamber experiment, P was applied in solution to 100%, 50%, 25%, 12.5% and 1% of the total soil volume. Dry matter yields, total phosphorus uptake and utilization of fertilizer P increased at each level of applied P as the size of the phosphated band was decreased. The results were partly attributed to greater chemical availability of P in the smaller zones of P fertilizer reaction. In a second growth chamber experiment, soybeans responded differently to phosphorus banded in six different locations. Placement of the fertilizer 2.5 cm directly below the seed was more effective in increasing dry matter yield, total phosphorus uptake and fertilizer P utilization than placement 2.5 cm and 5 cm away at the same depth or placement 5 cm below the seed, whether the band was directly below, 2.5 cm away or 5 cm away. Soybean yield responses in the field were greatest with P banded 2.5 cm directly below the seed on low-P soils. Placement of P 2.5 cm below the seed resulted in grain yields that were 64% and 50% higher (at the two sites) than those obtained in control plots. Sidebanding P, 2.5 cm below and 2.5 cm away from the seed at the same level of application, improved grain yields of control plots by 40% and 39%. Seed placement and broadcast applications of P were not as effective in increasing grain yields. Broadcasting P in fall or in spring at rates of up to 52.38 kg P/ha did not result in significantly higher grain yields than those obtained in control plots. Placement of P in contact with the seed appeared to reduce seedling emergence, resulting in depressed yields when 52.38 kg P/ha were applied. Key words: Glycine max L. Merrill, ’Maple Presto’

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