EFFECT OF CHEMICAL WEED CONTROL ON LANTANA CAMARA AND ARTIMISIA ROXBURGHIANA PERENNIAL WEEDS IN PLUM ORCHARDS

2005 ◽  
pp. 315-321
Author(s):  
U.U. Khokhar ◽  
V.P. Sharma ◽  
D.R. Gautam
Keyword(s):  
Weed Control ◽  
Lantana Camara ◽  
Perennial Weeds

Response of lowbush blueberry (Vaccinium angustifolium) to hexazinone applied early in the fruiting year

2002 ◽  
Vol 82 (4) ◽  
pp. 781-783 ◽  
Author(s):  
K. I. N. Jensen ◽  
E. G. Specht
Keyword(s):  
Key Words ◽  
Weed Control ◽  
Corolla Tube ◽  
Growth Stages ◽  
Vaccinium Angustifolium ◽  
Floral Buds ◽  
Perennial Weeds ◽  
Lowbush Blueberry ◽  
Herbaceous Perennial

Spring application of 1.0 kg ha-1 hexazinone to fruiting-year lowbush blueberry no later than the F3 floral stage, when floral buds separate, but before the corolla tube shows white, controlled some common herbaceous perennial weeds without injury to the crop. Key words: Herbicide injury, growth stages, weed control, hexazinone, Vaccinium angustifolium

scholarly journals WEED CONTROL FOR SOME DOMINANT PERENNIAL WEEDS IN EGYPT

2008 ◽  
Vol 86 (4) ◽  
pp. 1607-1619
Author(s):  
GABER A. SARY ◽  
MOHAMED E. R. GOMAA ◽  
ALY A. SALIM ◽  
ELHASSANIEN E. HASSANIEN ◽  
ASHRAF M. FADL-ALLAH
Keyword(s):  
Weed Control ◽  
Perennial Weeds

scholarly journals The Programmed Approach™ to pasture renewal and cropping

2009 ◽  
pp. 89-92
Author(s):  
P.M.S. Lane ◽  
P.J. Addison ◽  
M.J. Van Plateringen
Keyword(s):  
Weed Control ◽  
Crop Yield ◽  
Renewal Process ◽  
Perennial Weeds ◽  
Wide Range

Including forage cropping as part of the pasture renewal process can be beneficial; however, too often farmers achieve unsatisfactory results in terms of both crop yield and the re-establishment of new perennial pasture. To be successful with this approach the farmer needs to have a wide range of information on pest and weed control and cropping techniques. Keywords: pasture renewal, cropping, glyphosate, perennial weeds, endophyte, clover establishment

scholarly journals Efficacy of Various Herbicides for the Control of Perennial Plantago spp. and Effects on Alfalfa Damage and Yield

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1710
Author(s):  
Leslie Beck ◽  
Mark Marsalis ◽  
Leonard Lauriault ◽  
Matteo Serena
Keyword(s):  
Weed Control ◽  
Cropping Systems ◽  
Plantago Lanceolata ◽  
Plantago Major ◽  
Negative Effects ◽  
Control Field ◽  
Perennial Weeds ◽  
Herbicide Treatments ◽  
Damage Symptoms ◽  
Over Time

Broadleaf (Plantago major L.) and buckhorn plantain (Plantago lanceolata L.) are perennial weeds that are notoriously difficult to control in alfalfa cropping systems. Sharpen® (saflufenacil) herbicide has been registered for broadleaf weed control in dormant alfalfa, although it has not been evaluated on plantain control. Field and greenhouse experiments were conducted to determine the efficacy of saflufenacil on plantain control with assessments of damage to alfalfa and effects on yield. In the greenhouse, applications of saflufenacil alone caused greater injury to both broadleaf and buckhorn plantain compared to the non-treated control (NTC). Additionally, applications of saflufenacil in combination with other herbicides (imazethapyr or imazamox) caused the greatest amount of injury to both broadleaf and buckhorn plantain compared to all other commercially available herbicide treatments. However, this injury was not enough to effectively control the weeds and prevent recovery and regrowth over time. In the field, alfalfa did not exhibit damage symptoms, or have reduced yield when treated with saflufenacil compared to the NTC. This research indicates that applications of saflufenacil provided temporary injury throughout the duration of the study to both broadleaf and buckhorn plantain with few negative effects to alfalfa in the field.

scholarly journals Sustainable alternatives to chemicals for weed control in the orchard – a Review 

2020 ◽  
Vol 47 (No. 1) ◽  
pp. 1-12 ◽  
Author(s):  
Md Jebu Mia ◽  
Francesca Massetani ◽  
Giorgio Murri ◽  
Davide Neri
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Wood Chip ◽  
Management Approach ◽  
Soil Biodiversity ◽  
Perennial Weeds ◽  
Tillage System ◽  
Pressure Water ◽  
Alternative Weed Control ◽  
Fruit Orchards

This review is designed to address various alternative weed-control practices and their possibilities in the fruit orchard in terms of sustainability. Correct weed management and maintenance of adequate orchard biodiversity are crucial for sustainable orchard soil management. The key is to practice an alternative weed-management approach (single or integrated) rather than to use possibly harmful chemicals only. Integration of modern equipment with a shallow tillage system can provide effective weed control in tree rows, including optimised tree performance and soil biodiversity. Living mulch suppresses weeds and enhances orchard biodiversity, while selection of less competitive and less pest-attracting species is crucial. Plastic covers offer long-term weed control, but additional nutrient amendments are required to maintain the balanced fertility of the soil. Wood chip mulch is suggested where the materials are available on or near the farm, and where there is lower incidence of perennial weeds. High pressure water and robotic systems are still in their infancy for fruit orchards, and required more research to confirm their efficiency.

scholarly journals Weed survey of spring cereals in New Brunswick

2005 ◽  
Vol 75 (3) ◽  
pp. 113-124 ◽  
Author(s):  
A.G. Thomas ◽  
D.J. Doohan ◽  
K.V. McCully
Keyword(s):  
New Brunswick ◽  
Weed Control ◽  
Abundant Species ◽  
Stellaria Media ◽  
Perennial Weeds ◽  
Spring Cereals ◽  
Cereal Fields ◽  
Chrysanthemum Leucanthemum ◽  
The Impact ◽  
Weed Survey

During 1986 and 1987, a weed survey of 187 New Brunswick cereal fields was conducted. A total of 76 species were identified of which 40 were considered agronomically important. About 50% of the species were perennial. Hemp-nettle (Galeopsis tetrahit), quack grass (Agropyron repens), sheep sorrel (Rumex acetosella), ox-eye daisy (Chrysanthemum leucanthemum), corn spurry (Spergula arvensis), and chickweed (Stellaria média) had the highest relative abundance values. Quack grass and hemp-nettle had the highest densities at 8.0 and 7.1 plants m-2, respectively. The highest weed density (103 plants m-2) was found in oats (Avena sativa) grown after a forage crop. The lowest density (24 plants m-2) was found in wheat (Triticum aestivum) grown after potatoes (Solarium tuberosum). Most of the abundant species were tolerant to MCPA, the most commonly used herbicide. Farmers could make major improvements in cereal weed control by choosing a herbicide that would control species tolerant to MCPA or 2,4-D, and using preplant or postharvest weed control to minimize the impact of perennial weeds.

Solar Heating of the Soil: Effect on Weed Control and on Soil-Incorporated Herbicides

Weed Science ◽  
1983 ◽  
Vol 31 (6) ◽  
pp. 819-825 ◽  
Author(s):  
Baruch Rubin ◽  
Abraham Benjamin
Keyword(s):  
Triticum Aestivum ◽  
Plant Growth ◽  
Soil Temperature ◽  
Weed Control ◽  
Solar Heating ◽  
Effective Control ◽  
Perennial Weeds ◽  
Hot Season ◽  
Winter Annual ◽  
Annual Weeds

Solar heating (SH) of the soil by mulching it with transparent polyethylene (PE) during the hot season elevated the soil temperature by 10 to 18 C above that of the non-mulched soil. SH for 4 to 5 weeks resulted in effective control of most summer and winter annual weeds, the effect lasting for more than 5 months after PE removal.Melilotus sulcatusDesf.,Astragalus boeticusL. and bull mallow (Malva nicaeensisAll. # MALNI) were not controlled by SH. Perennial weeds which propagate from vegetative parts were only partially controlled with short SH, but mulching for 8 to 10 weeks improved control. Mulching the soil with perforated or shaded transparent PE or black PE resulted in a smaller increase of soil temperature and thus less efficient weed control. A combination of SH with soil-incorporated EPTC (S-ethyl dipropylthiocarbamate) or vernolate (S-propyl dipropylthiocarbamate) did not improve the weed control over SH alone, but significantly enhanced the disappearance of the herbicides from the soil. SH inhibited the disappearance of fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl) phenyl]-4(1H)-pyridinone} but did not change the residual phytotoxicity of bromacil (5-bromo-3-sec-butyl-6-methyluracil). SH treatment improved plant growth and increased the yield of wheat (Triticum aestivumL. ‘895′) and turnip (Brassica rapaL. ‘Purple top’), but not of parsley (Petroselinum sativumHoffm.).

scholarly journals Biological efficacy of herbicides for weed control in noncropped areas

2009 ◽  
Vol 24 (2) ◽  
pp. 95-102 ◽  
Author(s):  
Tsvetanka Dimitrova
Keyword(s):  
Weed Control ◽  
Biological Study ◽  
Block Method ◽  
Forage Crops ◽  
Agricultural Producers ◽  
Plot Size ◽  
Highly Efficient ◽  
Perennial Weeds ◽  
Weed Infestation ◽  
Rational Control

An increasing problem facing agricultural producers is the invasion of weeds, perennial in particular, so that implementation of industrial technologies is impossible without their highly efficient and rational control. For the purpose of studying efficient herbicides for weed control in noncropped areas (stubbles), a biological study of five total systemic herbicides was conducted in areas under natural weed infestation and pressure from other surrounding weeds at the Institute of Forage Crops in Pleven in 2005-2007. The trials were carried out in field conditions using the block method with plot size of 20 m2. Treatment was conducted at the predominant stage of budding of perennial dicotyledonous weeds and earring of monocotyledonous weeds. Herbicidal efficacy was recorded on the EWRS 9-score scale (0-100% killed weeds = score 9-1). It was found that treatment of noncropped areas (stubbles) with the total systemic herbicides Touchdown System 4 (360 g/l glyphosate); Cosmic (360 g/l glyphosate); Roundup Plus (441 g/l glyphosate potassium salt); Leon 36 SL (360 g/l glyphosate) and Glyphos Super 45 SL (450 g/l glyphosate) was highly efficient, so that it was a successful element of a strategy for controlling weeds of different biological groups, and was especially effective against perennial weeds.

Rimsulfuron for Postemergence Weed Control in Corn in Humid Tropical Environments of Nigeria

2007 ◽  
Vol 21 (4) ◽  
pp. 977-981 ◽  
Author(s):  
David Chikoye ◽  
Udensi E. Udensi ◽  
A. Fontem Lum ◽  
Friday Ekeleme
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Field Studies ◽  
Small Scale ◽  
International Institute ◽  
Tropical Environments ◽  
Perennial Weeds ◽  
Dry Biomass ◽  
Corn Grain ◽  
Corn Grain Yield

Cogongrass and guineagrass are serious perennial weeds in small-scale farms in lowland subhumid zones of West Africa. Field studies were conducted in 2002 and 2003 at two sites in Ibadan, Nigeria [Ijaye and the International Institute of Tropical Agriculture (IITA)], to evaluate the effect of rimsulfuron on weed communities dominated by cogongrass and guineagrass in corn. At both sites, treatments were rimsulfuron dosages of 0 (nontreated control), 10, 20, 30, 40, 50, 60, 70, and 80 g ai/ha. Rimsulfuron did not cause any visible phytotoxicity on the corn at any dosage at either site. There was a rapid increase in weed control as the dosage of rimsulfuron increased from 0 to 20 g/ha. Weed control was not improved at rates higher than 20 g/ha. Rimsulfuron was very effective against sedges,Ipomoea involucrata, Bengal dayflower, gulf leafflower, old-world diamond-flower, and wild jute providing more than 80% control at dosages between 10 and 20 g/ha at Ijaye. Rimsulfuron was less effective for cogongrass, with a maximum of only 38% control observed. At IITA, the herbicide was very effective against guineagrass, Bengal dayflower, nodeweed, coat buttons, redfruit passionflower, and waterleaf; all of which were controlled more than 70% with any rate of rimsulfuron. Regression analysis showed that the dosage of rimsulfuron required to reduce shoot dry biomass by 70% was 5 g/ha for guineagrass and 35 g/ha for cogongrass at 3 wk after treatment (WAT). At crop maturity, the dosage of rimsulfuron required to reduce shoot dry biomass by 70% was 43 g/ha for guineagrass and 200 g/ha for cogongrass. The dry biomass of cogongrass and guineagrass was higher at crop harvest than at 2 WAT regardless of herbicide dosage. Corn grain yield was 1.8 times higher at IITA than at Ijaye. At both sites, corn grain yield increased with increased herbicide dosage. Maximum corn grain yields were obtained at a rimsulfuron dosage of 20 g/ha.

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