scholarly journals Application of Various Herbicides on Controlling Large and Narrow Leaf Weeds and Their Effects on Physiological and Agronomic Traits of Wheat

2020 ◽  
Vol 38 ◽  
Author(s):  
A. Bari ◽  
M.S. Baloch ◽  
A.N. Shah ◽  
A.A. Khakwani ◽  
I. Hussain ◽  
...  
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Agronomic Traits ◽  
Block Design ◽  
Research Area ◽  
Climatic Conditions ◽  
Wheat Crop ◽  
Main Plot ◽  
Hand Weeding ◽  
Almost All

ABSTRACT: In order to examine application of various herbicides for controlling weeds in wheat crop, a field trial was conducted at the Agronomic Research Area, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa (KPK) during the year 2015-2016. The experiment was laid out in a randomized complete block design (RCBD) with split-plot arrangements having three replications. The main plot was comprised application time of herbicides while the use of herbicides was assigned to sub-plots. The data revealed that most of the weed parameters, physiological traits and agronomic attributes of crop plants were significantly affected by weed management practices including the use of herbicides at different time intervals over the weedy check. Hand weeding technique excelled all other weed management practices in almost all the parameters studied. This technique was found to be the most effective treatment against all prevailing weeds and obtained the highest grain yield of wheat under climatic conditions of Dera Ismail Khan.

scholarly journals Weed Management in Wheat by Cuscuta Alone and in Combination with Commercial Weedicides Allymax and Axial

2020 ◽  
Vol 38 ◽  
Author(s):  
Y. ABDULLAH ◽  
M.S. BALOCH ◽  
A.N. SHAH ◽  
M.M. HASHIM ◽  
M.A. NADIM ◽  
...  
Keyword(s):  
Leaf Area ◽  
Aqueous Extract ◽  
Weed Management ◽  
Block Design ◽  
Wheat Yield ◽  
Wheat Crop ◽  
Limiting Factor ◽  
Area Index ◽  
Net Assimilation ◽  
Hand Weeding

ABSTRACT: The present study was to assess the additive effects of cuscuta (akasbel) aqueous extract alone and in combination with full and reduced doses of commercially available weedicides against weeds in wheat crop during the year 2016-2017. The study was conducted in a randomized complete block design (RCBD) with 3 replications. The results showed that hand weeding and use of weedicides Allymax and Axial (full and half recommended doses) significantly controlled all prevailing weeds and increased yield and yield contributing parameters over the weedy check/control and sole application of cuscuta aqueous extract. Hand weeding and Allymax (full dose) showed minimum weed population, relative density, fresh and dry weed biomass and higher leaf area index (LAI), leaf area duration (LAD), crop growth rate (CGR), plant height, 1000 grain weight and grain yield while net assimilation rate (NAR), chlorophyll content, number of tillers, spike length, grains spike-1 and biological yield were maximum only in hand weeding. These findings suggest that in order to attain highest wheat yield, the field should be kept free from weeds by hand weeding (if labour is not a limiting factor) or use recommended dose of weedicide Allymax for efficient weed management in wheat.

scholarly journals Standardization of spacing and weed management practices in SRI system of rice cultivation under organic conditions in relation to sustainable agriculture in the changing scenario of climate

2014 ◽  
Vol 15 (3) ◽  
pp. 51-54
Author(s):  
Rameshwar K. ◽  
J.P. Saini ◽  
Sanjay Chadha ◽  
Punam K. ◽  
R.G. Upadhyay
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Rice Variety ◽  
Dry Weight ◽  
Yield Attributes ◽  
Organic Farm ◽  
Commelina Benghalensis ◽  
Hand Weeding ◽  
Paddy Yield

A field experiment was conducted during kharif seasons of 2009 & 2010 at Model Organic Farm of Department of Organic agriculture, CSK Himachal Pradesh Krishi Vishvavidyalya Palampur in factorial randomized block design with three replications consisting of eight treatment combinations. The treatments included two methods of weeding (mechanical weeding with cono weeder & hand weeding) and 4 spacings (25x25, 30x30, 20x20 and 30x20 cm). Rice variety RP-2421 was transplanted in second week of July during both the years following all organic packages of practices. The weeding was done at 20 & 40 days after transplanting rice. The dominant species of weeds were Echinochloa crusgalli, Digitaria sanguinalis and Panicum  dichotomiflorum among grasses; Cyperus iria and Cyperus difforimis among sedges and Aeschynomera indica, Ammania spp and Commelina benghalensis among broadleaved weeds.The experimental results revealed that 2 mechanical weedings with cono-weeder at 20 & 40 DAT resulted in significantly higher values of yield attributes viz. effective tillers/m2 & panicle length and hence higher paddy yield and lower weed dry weight over hand weeding twice (20 & 40 DAT). However, grains/ panicle and 1000 grain weight did not vary significantly during both the years. Among spacings 30x30 cm being at par with 25x25 cm & 30x20 cm recorded significantly higher paddy yield and lower weed dry weight over 20x20 cm during both the years. The interactions between method of weedings& spacing were observed to be non-significant during both the years of study.

scholarly journals Effect of cultivars and different weed management practices on yield, nutrient uptake and soil micro-flora in dry direct-seeded rice under coastal deltaic ecosystem

2021 ◽  
Vol 58 (1) ◽  
pp. 21-25
Author(s):  
K Pooja ◽  
P Saravanane ◽  
S Nadaradjan ◽  
S Sundaravaradhan ◽  
S Muthukumarasamy ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Weed Management ◽  
Management Practices ◽  
Rice Cultivar ◽  
Yield Attributes ◽  
Soil Microbial ◽  
Main Plot ◽  
Direct Seeded ◽  
Hand Weeding ◽  
Soil Microbial Population

An experiment was conducted during September 2019 - January 2020 to investigate the effects of cultivars and different weed management practices on yield attributes, yield, nutrient uptake and soil micro-flora in dry direct-seeded rice (DDSR). Experiment was laid out in split plot design replicated thrice. The treatment combination consisted of three levels of cultivars in main plot (ADT 46, CO 52 and Improved white ponni) and five levels of weed management practices in the sub plots (application of pendimethalin @ 1 kg a.i ha-1 as pre-emergence herbicide at 3 days after sowing (DAS), bispyribac-sodium @ 0.02 kg a.i ha-1 as post-emergence herbicide at 20 DAS, sequential application of pendimethalin @ 1 kg a.i ha-1 followed by (fb) bispyribac-sodium @ 0.02 kg a.i ha-1, hand weeding twice at 20 and 40 DAS and weedy check). Both the cultivars and weed management practices influenced the growth, nutrient uptake, soil microbial population and yield of the DDSR. However, the interaction did not influence any of the parameters significantly. Rice cultivar ADT 46 proved to be superior with respect to nutrient uptake and yield. Whereas, among weed management practices, the highest nutrient uptake and yield were obtained with sequential application of pendimethalin @ 1 kg a.i ha-1 fb bispyribac-sodium @ 0.02 kg a.i ha-1.

scholarly journals A Study on Influence of Different Weed Management Practices on Yield and Economics of Rabi Groundnut in Telangana State

2021 ◽  
pp. 9-13
Author(s):  
N. Charitha ◽  
M. Madhavi ◽  
G. Pratibha ◽  
T. Ramprakash
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
High Efficiency ◽  
Block Design ◽  
College Of Agriculture ◽  
Net Returns ◽  
Telangana State ◽  
Hand Weeding ◽  
Clodinafop Propargyl

An experiment was conducted to study the effect of different high efficiency herbicides as pre and post-emergence application on the economics of groundnut at College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Hyderabad, during rabi 2020-21. The experiment consisted of ten treatments laid out in randomised block design (RBD) replicated thrice. Treatments are diclosulam 84% WDG 26 g ha-1 PE fb intercultivation at 20 DAS, imazethapyr 2% EC + pendimethalin 30% EC 960 g ha-1 PE fb intercultivation at 20 DAS, pyroxasulfone 85 % WDG 127.5 g ha-1 PE fb intercultivation at 20 DAS, propaquizafop 2.5% + imazethapyr 3.75% w/w ME 125 g ha-1 PoE fb intercultivation at 40 DAS, imazethapyr 35% +  imazamox 35% WG 70 g ha-1 PoE fb intercultivation at 40 DAS, sodium acifluorfen 16.5%  EC + clodinafop propargyl 8%  EC 250 g ha-1 PoE fb intercultivation at 40 DAS, imazethapyr 10% SL 100 g ha-1 PoE fb intercultivation at 40 DAS, intercultivation (20 and 40 DAS), intercultivation fb hand weeding (20 and 40 DAS) (Weed-free) and Unweeded control. The findings also conveys that, among all the weed management practices, higher gross returns were realized with intercultivation fb hand weeding at 20 and 40 DAS and among the herbicides, diclosulam 26 g ha-1 PE fb intercultivation at 20 DAS and imazethapyr + pendimethalin 960 g ha-1 PE of fb intercultivation at 20 DAS recorded higher returns. However the net returns and B: C ratio was significantly highest with diclosulam 26 g ha-1 PE fb intercultivation at 20 DAS and imazethapyr + pendimethalin at 960 g ha-1 PE fb intercultivation at 20 DAS.

scholarly journals Performance of Dry Direct Seeded Rice and Weeds on Sesbania Brown Manuring as Compared to Farmers’ Practice and Chemical Control Method

2018 ◽  
Vol 6 (3) ◽  
pp. 265-269
Author(s):  
Sunil Kumar Chaudhary ◽  
Santosh Marahatta ◽  
Manisha Chaudhary
Keyword(s):  
Weed Management ◽  
Chemical Control ◽  
Management Practices ◽  
Control Method ◽  
Management Practice ◽  
Block Design ◽  
Effective Control ◽  
Direct Seeded ◽  
Hand Weeding ◽  
The Individual

The research was conducted to study the comparison of farmers’ weed management practice in rice with chemical control and Sesbania co-culture. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications and five different weed management practices. The five treatments were Farmers’ practice (two hand weeding first at 28 DAS and another at 40 DAS), Chemical practice (Bispyribac sodium as post emergence @ 25 g a.i. ha-1 at 25 DAS), Sesbania co-culture (100 kg Sesbania ha-1 and knocking down at 28 DAS), Weed free (Hand removal of weeds at 10 days’ interval) and Weedy check (No weed management). The individual plot size was 5 x 4 m2. The Sesbania co-culture and farmers’ practice were found more or less similar performance for all observed parameters but as better as compared to weedy check and chemical treatment. Sesbania co-culture was found less costly than farmers’ practice for weed management. The experiment clearly demonstrated the importance of brown manuring on effective control of weeds in rice field under dry direct seeded rice.Int. J. Appl. Sci. Biotechnol. Vol 6(3): 265-269

scholarly journals Efficacy of chemical and cultural weed management practices on nutrient uptake in black gram (Phaseolus mungo)

2021 ◽  
Vol 17 (AAEBSSD) ◽  
pp. 121-125
Author(s):  
Kavita D. Rajput ◽  
J. P. Bholane ◽  
A.S. Latkar ◽  
V.M. Bhale
Keyword(s):  
Nutrient Uptake ◽  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Cultural Practices ◽  
Block Design ◽  
Control Treatment ◽  
Black Gram ◽  
Randomized Block Design ◽  
Hand Weeding

The results of the field experiment carried out during kharif season of 2010 at agronomy department farm, Dr.P.D.K.V.,Akola revealed that N,P,K uptake by black gram (Phaseolus mungoL.) and weeds were significantly higher under weed free and weedy check treatments among all of the weed control treatments. The experiment was laid out in Randomized Block Design replicated three times with thirteen treatments, in that chemical and cultural treatments were compared with weedy check and weed free control. Herbicide application in general and pre-emergence application of pendimethalin @1.5kg/ha in particular reduced the nutrients removal by weeds and enhanced the nutrient uptake by the crop followed by cultural practices of two hand weeding at 15 & 30 days after sowing. The pre-emergence application of pendimethalin in @ 1.5 kg/ha recorded highest nutrient uptake in grain (34.92, 6.50, 34.16 NPK kg/ha resp.) and strover (63.26, 10.60, 57.60 NPK kg/ha resp.) among all the weed control treatment except weed free treatment. The crude protein content of grain was the highest with pre-emergence application of pendimethalin @ 1.5 kg/ha (21.65) followed by pendimethalin @ 1.0 kg/ha (21.55).

scholarly journals Comparative Efficiency of Tillage Practices in Maize

2014 ◽  
Vol 2 (2) ◽  
pp. 89-93 ◽  
Author(s):  
B Ita ◽  
E Ariga ◽  
R Michieka ◽  
W Muiru
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Small Scale ◽  
Tillage Practices ◽  
Maize Grain Yield ◽  
Maize Varieties ◽  
Maize Grain ◽  
Hand Weeding

Weed management practices used by small scale farmers determine maize productivity. The trials were executed in Kigumo district during the long and short rains in 2010 to compare effectiveness of glyphosate and hand weeding on weed management in maize (Zea mays L.). Treatments were arranged in a Completely Randomized Complete Block Design replicated three times in a split plot arrangement. The main plots were two maize varieties DUMA SC 41 and DK 8031 and the subplots three weed management practices,(glyphosate, hand weeding and no tillage). Data collected included weed count by species,fresh and dry weed biomass and maize grain yield. Data was subjected to ANOVA using Genstat computer software package at P<0.05. Treatments means were separated by Student-Newman Keuls Test. Results revealed that there were significant differences in weed count among weed management practices (P < 0.05). Weeds, significantly established faster under hand weeding than other weed management practices. There were no significant differences among weed management practices in biomass and maize grain yield (P < 0.05). The two maize varieties significantly differed in grain yield under different weed management practices, DK 8031 under glyphosate had the highest yield among the tillage practices involved.

scholarly journals Effect of Weed Management Practices on Economics of Groundnut in Coastal Zone of Karnataka

2020 ◽  
pp. 23-28
Author(s):  
Kunal Narwal ◽  
B. S. Yenagi
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Agricultural Research ◽  
Block Design ◽  
Cost Ratio ◽  
Research Station ◽  
Benefit Cost Ratio ◽  
Randomized Complete Block Design ◽  
Hand Weeding ◽  
Benefit Cost

Aims: To assess efficacy and economic viablity of herbicides on weed management in groundnut under groundnut during rabi-summer season. Study Design: The experiment was laid out in randomized complete block design with three replications. Place and Duration of Study: The field experiment was conducted at Agricultural Research Station, Kumta, Uttar Kannada, University of Agricultural Sciences, Dharwad (Karnataka) during rabi 2016-2017. Methodology: The experiment comprised nine treatments are as follows. T1: Unweeded check, T2: Weed free check, T3: Two hand weeding (At 20 and 40 DAS), T4: pendimethalin 30% E.C. @ 1.5 kg ha-1 (PE) fb one hand weeding at 25 DAS, T5: oxyfluorfen 23.5% E.C. @ 200 g ha-1(PE) fb one hand weeding at 25 DAS, T6: pendimethalin 30% E.C. @ 1.5 kg ha-1 (PE)  fb quizalofop-p-ethyl 5% E.C. @ 50 g ha-1 20-30 DAS (POE), T7: pendimethalin 30% E.C. @ 1.5 kg ha-1 (PE) fb imazethapyr 10% S.L.  @ 75 g ha-1 20- 30 DAS (POE), T8: pendimethalin 30% E.C. @ 1.5 kg ha-1 (PE) fb oxyfluorfen 23.5% E.C. @ 100 g ha-1 at 20-30 DAS (POE), T9: pendimethalin 30% E.C. @ 1.0 kg ha-1 (PE) fb one hand weeding at 25 DAS. Results: Among the weed management practices revealed that, higher cost of cultivation ( 53,340 ha-1) under weed free check and pod yield (2255 kg ha-1), gross return ( 92,446 ha-1), net return ( 45,239 ha-1) and benefit cost ratio (1.96) with pre-emergence application of pendimethalin 30% E.C. @ 1.5 kg ha-1 followed by one hand weeding at 25 DAS.

scholarly journals Impact of Weed Management Practices on Yield Attributes, Economics and Phytotoxicity of Kharif Maize

2021 ◽  
pp. 42-49
Author(s):  
Y. Lavanya ◽  
K. Srinivasan ◽  
C. R. Chinnamuthu ◽  
P. Murali Arthanari
Keyword(s):  
Weed Management ◽  
Tamil Nadu ◽  
Management Practices ◽  
Block Design ◽  
Maize Crop ◽  
Yield Attributes ◽  
Randomized Block Design ◽  
Hand Weeding ◽  
And Control ◽  
The Impact

A field experiment was conducted during 2018 and 2019 at Tamil Nadu Agricultural University, Agriculture College and Research Institute, Coimbatore to study the impact of weed management practices on yield attributes, economics and phytotoxicity of kharif maize. Ten treatments were tested in randomized block design with three replications viz., pre emergence (PE) atrazine at 0.5 kg a.i. ha-1 fb hand weeding (HW) at 20 DAS, PE atrazine at 0.5 kg a.i. ha-1 fb power weeder (PW) at 20 DAS, PE atrazine at 0.5 kg a.i. ha-1 + pendimethalin at 1 kg a.i. ha-1 (Tank mix), PE atrazine at 0.5 kg a.i. ha-1 + pendimethalin at 1 kg a.i. ha-1 fb HW at 20 DAS, early post emergence (EPoE) topramezone at 25.2 g a.i. ha-1, PE atrazine at 0.5 kg a.i. ha-1 fb EPoE topramezone at 25.2 g a.i. ha-1, EPoE tembotrione at 122 g a.i. ha-1, PE atrazine 0.5 kg a.i. ha-1 fb EPoE tembotrione 122 g a.i. ha-1, hand weeding twice at 20 and 45 DAS and control (weedy check). Among the different weed management practices significantly higher yield attributes viz., cob length, cob girth, weight of cob, No. of grain rows cob-1, No. of grains cob-1, grain yield cob-1 was found with hand weeding twice at 20 and 45 DAS and it was at par with atrazine at 0.5 kg a.i. ha-1 as PE  fb topramezone at 25.2 g a.i. ha-1 as EPoE and atrazine at 0.5 kg a.i. ha-1 as PE + tembotrione at 122 g a.i. ha-1 as EPoE. Maximum net return and B:C ratio were recorded under atrazine at 0.5 kg a.i. ha-1 as PE fb topramezone at 25.2 g a.i. ha-1 as EPoE followed by atrazine at 0.5 kg a.i. ha-1 as PE + tembotrione at 122 g a.i. ha-1 as EPoE. However, among the different herbicidal treatments used, all the herbicidal treatments were found to be safe to the maize crop without any caused phototoxic effect on maize during both the years of experimentation. Now-a-days, increased labour scarcity and costs are encouraging farmers to adopt labour and cost- saving options by using chemical method.

Development of Efficient Weed Management Practices for Drilled Paddy Production under Gujarat condition

2019 ◽  
Vol 6 (02) ◽  
Author(s):  
R, V Hajari ◽  
R G MACHHAR ◽  
A. K. Mahida ◽  
G D HADIYA ◽  
A K MAHIDA
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Growth And Yield ◽  
Research Station ◽  
Yield Attributes ◽  
Straw Yield ◽  
Randomized Block Design ◽  
Hand Weeding

To study the weed management in drilled paddy an experiment was conducted at Agriculture Research Station, Anand Agricultural University, Derol Dist: panchmahal, Gujarat during kharif seasons of the years 2012-13, 2013-14 ,2014-15 and 2015 -16 . Ten treatments for weed management were studied in randomized block design with four replications. Results that all the growth and yield attributes except plant height and test weight were significantly influenced due to different weed control treatments. The grain and straw yield of drilled paddy were also altered significant due to weed control treatments. In general, T2 (two hand weeding at 20 and 40 DAS) recorded the highest yield among all. It was, however, at par with three other treatments which included pre and post emergence application of herbicides. Since, the application of Oxadiargyl @ 90 g/ha f/b Bisbyribac sodium @ 25 g/ha at 20 DAS is one among the dual application of herbicide, it can be recommended for drilled paddy in options of two hand weeding.

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