USDA Research

2021 ◽  
Vol 32 (3) ◽  
pp. 125-129
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Cultural Practices ◽  
Weather Conditions ◽  
Integrated Weed Management ◽  
Political Perspective ◽  
Long Time ◽  
Mixed Feelings ◽  
Environmentally Safe ◽  
To Come

It had been a long time since the author last participated in a series of presentations on Integrated Weed Management (IWM) and he left it with mixed feelings. The first presentation from Henry Creissen, only 65% of the 225 responses to his IPM survey claimed to be practising IPM and it seemed to me that there was some way to go to encourage its take up and the need for inclusion of IPM in legislation was understandable. However, in most of the following presentations, IWM was clearly being practiced. As Sean Sparling stated, most farmers practice it whether they know it or not and that it is common sense. I would like to think that most, if not all farmers and growers, practice IWM measures and practice sustainable agricultural and horticultural practices. Hopefully, the days of unsustainable mono-cultural practices with repeated use of the same herbicides for weed control, year after year, have passed, as many of these herbicides now have resistance issues, even if they are still available. Changing weather conditions will mean adjusting weed management practices, which if sustainable will meet IWM requirements. One concern is that all presenters stated that herbicides were a key component of IWM, particularly the use of glyphosate. Its use is threatened from a regulatory perspective, or more appropriately political perspective, although regulatory science does not suggest there is an issue. However there is also the issue of loss of efficacy due to the development of weed resistance due to overuse. I live in hope that glyphosate can remain as part of the toolbox IWM and that my former colleagues in the remaining Agrochemical Companies undertaking R&D are able to discover and develop new and environmentally safe herbicides to provide the tools to contribute to IWM for years to come.

A Reintroduction to Integrated Weed Management

Weed Science ◽  
1996 ◽  
Vol 44 (2) ◽  
pp. 409-412 ◽  
Author(s):  
Clyde L. Elmore
Keyword(s):  
Pest Management ◽  
Weed Management ◽  
Management Practices ◽  
Farming System ◽  
Control Measures ◽  
Integrated Weed Management ◽  
Integrated Crop Management ◽  
Long Time ◽  
Management Hierarchy ◽  
Crop Management Systems

Integrated Weed Management (IWM), a long time practice by farmers has become more commonly discussed as a total weed management system. Whether an off shoot of Integrated Pest Management (IPM) or a further recognition of integrating weed control measures within the cropping and farming system, it has become more widespread. IWM is being practiced using many of the same components, from croplands to forests and rangeland. A weed management hierarchy has been developed by degree of diversity of management practices. IWM researchers and educators should invite other pest management specialists to join us in striving for Integrated Crop Management systems.

scholarly journals Impact of integrated weed management practices on weed and morphological parameters of black gram (Phaseolus mungo)

2021 ◽  
Vol 16 (AAEBSSD) ◽  
pp. 23-28
Author(s):  
J. P. Bholane ◽  
Kavita D. Rajput ◽  
V.M. Bhale
Keyword(s):  
Leaf Area ◽  
Weed Management ◽  
Management Practices ◽  
Cultural Practices ◽  
Root Nodules ◽  
Field Investigation ◽  
Integrated Weed Management ◽  
Black Gram ◽  
Area Index ◽  
Phaseolus Mungo

A field investigation was carried out during Kharif season in 2010 at Agronomy Department Farm, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, to evaluate the effect of four herbicides (imazethapyr , pendimethalin, fenoxyprop-p-ethyl and quizalofop-p-ethyl) applied at different rates with different time of application (pre-emergence, post emergence and combination of both) and cultural practices i.e. hand weeding and hoeing on morphological and weed contributing parameters in black gram (Phaseolus mungo). Among all the weed control methods, pre-emergence application of pendimethalin @ 1.5 kg/ha showed superiority over weedy check and rest all other methods, which were under study and significantly increased plant height (44.37), number of functional leaves plant-1 (12.37), leaf area plant-1 (886.7), total dry matter weight plant-1 (18.77), leaf area index (2.96), number of root nodules plant-1 (27 at 45 DAS) (other at 60 DAS), when compared with weedy check.

scholarly journals Efficacy of integrated weed management practices on yield and yield contributing parameters of black gram (Phaseolus mungo)

2021 ◽  
Vol 17 (AAEBSSD) ◽  
pp. 172-176
Author(s):  
Kavita D. Rajput ◽  
J. P. Bholane ◽  
A.S. Latkar ◽  
V.M. Bhale
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Cultural Practices ◽  
Field Investigation ◽  
Integrated Weed Management ◽  
Black Gram ◽  
Phaseolus Mungo ◽  
Time Of Application ◽  
Crop Weed Competition

A field investigation was carried out during Kharif season in 2010 at Agronomy Department Farm,Dr.Panjabrao Deshmukh Krishi Vidyapeeth, Akola, to evaluate the effect of four herbicides (imazethapyr, pendimethalin,fenoxyprop-p-ethyl and quizal ofop -p-ethyl ) applied at different rates with different time of application (pre-emergence,post emergence and combination of both) and cultural practices onyield and yield contributing parameters of black gram (Phaseolus mungo). Data revealed that different chemicals and cultural weed control practices were exhibited their superiority over weedy check and reduced the crop weed competition by controlling the annual and broad leaved weeds. Among all the weed control treatments, pre-emergence application of pendimethalin @ 1.5 kg/ha showed higher grain weight plant-1 (4.87), number of pods plant (16.27),number of seeds per pod (7.00) and yield per ha (10.05).

scholarly journals Impact of integrated weed management practices soil microbial count and grain yield in black gram (Phaseolus mungo L.)

2021 ◽  
Vol 16 (AAEBSSD) ◽  
pp. 43-45
Author(s):  
J. P. Bholane ◽  
Kavita D. Rajput ◽  
V.M. Bhale
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Cultural Practices ◽  
Field Investigation ◽  
Soil Microflora ◽  
Integrated Weed Management ◽  
Microbial Count ◽  
Black Gram ◽  
Phaseolus Mungo

A field investigation was carried out during Kharif season in 2010 at Agronomy Department Farm, Dr.Panjabrao Deshmukh Krishi Vidyapeeth, Akola, to evaluate the effect of four herbicides (imazethapyr, pendimethalin, fenoxyprop-p-ethyl and quizalofop -p-ethyl ) applied at different rates with different time of application (pre-emergence,post emergence and combination of both) and cultural practices on soil microflora and yield of black gram (Phaseolus mungo). Data revealed that different chemicals and cultural weed control practices were exhibited their superiority over weedy check and reduced the crop weed competition by controlling the annual and broad leaved weeds. Among all the weed control treatments, pre-emergence application of pendimethalin @ 1.5 kg/ha showed higher yield per ha (10.05) and in case of in microbial study, bacterial, fungal and actinomycetes count before spraying of herbicide was non-significant but microbial count was reduced after spraying of herbicides as compared to before spraying of herbicides,as a result(before and after spraying of herbicide) pre-emergence application of imazethapyr at 75 g ha-1[(25.11, 17.10 ) ,( 19.50, 10.84) and (22.30,16.10)] showed the lower microbial count. In case of weedy check(26.90, 20.60 and 23.98) showed maximum microbial count followed by weed free (26.50, 20.30 and 22.60 ), among all the weed control practices.

scholarly journals Integrated weed management practices and sustainable food production among farmers in Kwara State, Nigeria

2021 ◽  
Vol 6 (1) ◽  
pp. 124-134
Author(s):  
Emmanuel Oyamedan Imoloame ◽  
Ibrahim Folorunsho Ayanda ◽  
Olayinka Jelili Yusuf
Keyword(s):  
Weed Management ◽  
Food Production ◽  
Management Practices ◽  
Sampling Technique ◽  
Structured Interview ◽  
Integrated Weed Management ◽  
Sustainable Food ◽  
Arable Crops ◽  
Multi Stage ◽  
Self Sufficiency

Abstract A survey was conducted in the Kwara State of Nigeria to study the integrated weed management (IWM) practices by farmers. This was in view of the poor weed management practices adopted by farmers, which is a major factor responsible for low yields of many arable crops in Kwara State. A multi-stage sampling technique was used to select a sample size of 480 respondents, and a structured interview schedule was used to elicit information from them. Data obtained were analyzed using descriptive statistics. Factor analysis was also carried out to examine the perception of farmers’ benefits of IWM. Results showed that the majority of farmers (29.4%) were youths, married (89.1%), and involved in medium-scale farming (47.2%). Furthermore, 50.8% of the farmers had primary or secondary education. Although farmers use different weed control methods, more than half of them (54.7%) use herbicides. Most farmers (92.6%) are engaged in the use of IWM, However, 73.5% of them use a combination of herbicides and hoe weeding. Although not properly practiced, farmers perceived IWM as having socio-environmental (29.229%) and techno-efficacious (23.495%) benefits over either hoe weeding or herbicides used alone. The findings suggest a need to train farmers on all aspects of IWM to achieve self-sufficiency in food production in Kwara State.

scholarly journals Sensitivity of imidazolinone-resistant red rice (Oryza sativa L.) to glyphosate and glufosinate

2015 ◽  
Vol 45 (9) ◽  
pp. 1557-1563 ◽  
Author(s):  
Guilherme Vestena Cassol ◽  
Luis Antonio de Avila ◽  
Carla Rejane Zemolin ◽  
Andrey Piveta ◽  
Dirceu Agostinetto ◽  
...  
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Integrated Weed Management ◽  
Rio Grande Do Sul ◽  
Red Rice ◽  
Resistance Evolution ◽  
Logistic Analysis ◽  
Imidazolinone Herbicides

<p>Dose-response experiments were carried out to evaluate the sensitivity of imidazolinone-resistant red rice to nonselective herbicides currently used in rice-soybean rotation in Rio Grande do Sul. Two red rice biotypes previously identified as resistant and susceptible to the imidazolinone herbicides were treated with imazapic plus imazapic, glyphosate and glufosinate under nine herbicide rates. A non-linear log-logistic analysis was used to estimate the herbicide rate that provided 50% red rice control and dry weight reduction (GR<sub>50</sub>). Imidazolinone-resistant red rice exhibited greater GR<sub>50</sub> values than imidazolinone-susceptible biotype for imazapyr plus imazapic. In contrast, both imidazolinone-resistant and susceptible red rice showed similar GR<sub>50</sub>values for glyphosate and glufosinate. These results indicate that glyphosate and glufosinate effectively control imidazolinone-resistant red rice at similar herbicide rates used to control imidazolinone-susceptible; however, integrated weed management practices must be adopted in rice-soybean rotation to delay resistance evolution of red rice populations to glyphosate and glufosinate</p>

Evaluation of integrated weed management practices for chilies in Pakistan

2007 ◽  
Vol 26 (8) ◽  
pp. 1135-1139 ◽  
Author(s):  
Khalid Mahmood Khokhar ◽  
Tariq Mehmood ◽  
Muhammad Shakeel
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Integrated Weed Management

scholarly journals Association of Chocolate Spot and Faba Bean Rust Epidemics with Climate Change Resilient Cultural Practices in Bale Highlands, Ethiopia

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Gosaye Eshetu ◽  
Yekedem Bimrew ◽  
Hassen Shifa
Keyword(s):  
Faba Bean ◽  
Weed Management ◽  
Management Practices ◽  
Cultural Practices ◽  
Disease Incidence ◽  
Cropping System ◽  
Previous Crop ◽  
Multiple Variable ◽  
Chocolate Spot ◽  
The Mean

Field survey was conducted in south eastern Ethiopia to determine the disease intensity of chocolate spot and rust and to investigate the association of disease intensity (incidence and severity) with environmental factors and crop cultural practices. A total of 280 faba bean fields were surveyed in eight districts, and type of cropping system, weed management practices, crop growth stage, previous crop in the field, and sowing date were recorded. The associations of disease intensity with independent variables were evaluated using logistic regression model. Mean disease incidence of chocolate spot varied from 70.9 to 93.2% in most fields while percentage severity index (PSI) ranged from 10.5 to 47.1%. In a reduced multiple variable model, chocolate PSI ≤ 30% showed high probability of association with mixed cropping system, good weed management practices, late planting, and when faba bean was rotated with vegetables and cereals. The mean disease incidence of faba bean rust was varied from 23.6 to 78.2%, while the mean PSI of rust was varied from 4.8 to 37.9%. In Gasera, Dinsho, and Agarfa districts, poor weed management practices, fields planted in the month of July, and when previous crop was legume had a high probability of association to (>20) rust PSI in a multiple variable reduced model. In contrast, soil types, fertilizer applied, and fungicides sprayed were not associated with disease intensity. The present study has identified cropping system, planting date, previous crop, district, and weed management practices as important variables that influence faba bean chocolate spot and rust epidemics in diversified fields. Therefore, proper weeding management practices, late planting, crop rotation habit, and other related farm practices should be carried out to reduce chocolate spot and rust impact until resistant faba bean genotypes are developed and distributed to the area.

Herbicide Timing and Rate Effects on Weed Management in Three Herbicide-Resistant Canola Systems

2004 ◽  
Vol 18 (4) ◽  
pp. 1006-1012 ◽  
Author(s):  
K. Neil Harker ◽  
George W. Clayton ◽  
John T. O'Donovan ◽  
Robert E. Blackshaw ◽  
F. Craig Stevenson
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Integrated Weed Management ◽  
Weed Biomass ◽  
Herbicide Resistant ◽  
Leaf Stage ◽  
Rate Effects ◽  
Herbicide Timing ◽  
Weed Removal

Herbicide-resistant canola dominates the canola market in Canada. A multiyear field experiment was conducted at three locations to investigate the effect of time of weed removal (two-, four-, or six-leaf canola) and herbicide rate (50 or 100% recommended) in three herbicide-resistant canola systems. Weeds were controlled in glufosinate-resistant canola (GLU) with glufosinate, in glyphosate-resistant canola (GLY) with glyphosate, and in imidazolinone-resistant canola (IMI) with a 50:50 mixture of imazamox and imazethapyr. Canola yields were similar among the three canola cultivar–herbicide systems. Yields were not influenced by 50 vs. 100% herbicide rates. Timing of weed removal had the greatest effect on canola yield, with weed removal at the four-leaf stage giving the highest yields in most cases. Percent dockage was often greater for GLU and IMI than for GLY. In comparison with the other treatments, dockage levels doubled for GLU after application at 50% herbicide rates. The consistency of monocot weed control was usually greater for GLY than for GLU or IMI systems. However, weed biomass data revealed no differences in dicot weed control consistency between IMI and GLY systems. Greater dockage and weed biomass variability after weed removal at the six-leaf stage or after low herbicide rates suggests higher weed seed production, which could constrain the adoption of integrated weed management practices in subsequent years.

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