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Journal articles on the topic 'Weed biomass'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Place, G. T., S. C. Reberg-Horton, D. L. Jordan, T. G. Isleib, and G. G. Wilkerson. "Influence of Virginia Market Type Genotype on Peanut Response to Weed Interference." Peanut Science 39, no. 1 (2012): 22–29. http://dx.doi.org/10.3146/ps10-12.1.

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Abstract Differences in the ability of cultivars to compete with weeds are not well-defined for peanut. Research was conducted in 2007 and 2008 to compare the growth and competitiveness of the virginia market type cultivars NC 10C, NC-V 11, NC 12C, Phillips, VA 98R, and breeding lines N99027L, N01013T, and N02020J under weedy and weed-free conditions. Weed-free peanut was established by applying preemergence and postemergence herbicides throughout the growing season supplemented by weekly hand removal of weeds. Clethodim was applied to weedy peanut to eliminate annual grass interference but no

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2

Bussan, Alvin J., Orvin C. Burnside, James H. Orf, Eric A. Ristau, and Klaus J. Puettmann. "Field evaluation of soybean (Glycine max) genotypes for weed competitiveness." Weed Science 45, no. 1 (1997): 31–37. http://dx.doi.org/10.1017/s0043174500092444.

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In the first of 2 field studies, weed biomass and soybean seed yield were used to evaluate 16 soybean genotypes for competitive ability against 12 weed species at Rosemount, MN, in 1992 and 1993. The yield and ranking of soybean genotypes often varied with the weed species. Grass weed species reduced yields the most, and small-seeded broadleaf weeds reduced yields the least across years. ‘Parker’ was highly competitive, as it suppressed weed biomass and produced high soybean yield. ‘Kato,’ ‘Kasota,’ ‘Dawson,’ and ‘Glenwood’ minimized weed biomass and maintained soybean yield while in competiti

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3

Roland, Gerhards, Bezhin Kostyantyn, and Santel Hans-Joachim. "Sugar beet yield loss predicted by relative weed cover, weed biomass and weed density." Plant Protection Science 53, No. 2 (2017): 118–25. http://dx.doi.org/10.17221/57/2016-pps.

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Sugar beet yield loss was predicted from early observations of weed density, relative weed cover, and weed biomass using non-linear regression models. Six field experiments were conducted in Germany and in the Russian Federation in 2012, 2013 and 2014. Average weed densities varied from 20 to 131 with typical weed species compositions for sugar beet fields at both locations. Sugar beet yielded higher in Germany and relative yield losses were lower than in Russia. Data of weed density, relative weed cover, weed biomass and relative yield loss fitted well to the non-linear regression models. Com

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4

Malik, Vikram S., Clarence J. Swanton, and Tom E. Michaels. "Interaction of White Bean (Phaseolus vulgarisL.) Cultivars, Row Spacing, and Seeding Density with Annual Weeds." Weed Science 41, no. 1 (1993): 62–68. http://dx.doi.org/10.1017/s0043174500057593.

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Field experiments were conducted at the Elora Research Station, Elora, Ontario, in 1988 and 1989 to quantify the inherent competitive ability of three white bean cultivars: OAC Gryphon, OAC Sprint, and OAC Laser growing with a naturally occurring population of annual weeds. An attempt was made to increase the competitive ability of these cultivars by altering row spacing and seeding density. Uncontrolled populations of weeds reduced white bean yields by 70%. OAC Gryphon and OAC Laser reduced weed biomass by 10 to 35% compared to OAC Sprint. The ability of cultivars to reduce weed biomass was f

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5

Mahajan, Gulshan, Mugalodi S. Ramesha, and Bhagirath S. Chauhan. "Response of Rice Genotypes to Weed Competition in Dry Direct-Seeded Rice in India." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/641589.

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The differential weed-competitive abilities of eight rice genotypes and the traits that may confer such attributes were investigated under partial weedy and weed-free conditions in naturally occurring weed flora in dry direct-seeded rice during the rainy seasons of 2011 and 2012 at Ludhiana, Punjab, India. The results showed genotypic differences in competitiveness against weeds. In weed-free plots, grain yield varied from 6.6 to 8.9 t ha−1across different genotypes; it was lowest for PR-115 and highest for the hybrid H-97158. In partial weedy plots, grain yield and weed biomass at flowering v

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6

Farris, Rodney L., and Don S. Murray. "Influence of Crownbeard (Verbesina encelioides) Densities on Peanut (Arachis hypogaea) Yield." Weed Technology 20, no. 3 (2006): 627–32. http://dx.doi.org/10.1614/wt-04-312r1.1.

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Field experiments were conducted at the Caddo Research Station near Ft. Cobb, OK and at the Agronomy Research Station near Perkins, OK to measure the effects of seven crownbeard (Verbesina encelioides) densities on peanut (Arachis hypogaea) yield. The seven densities evaluated were 0 (the weed-free check), 0.2, 0.4, 0.8, 1.6, 2.4, and 3.2 weeds/m of row. Data collected consisted of dry weed biomass and peanut yields. Correlation between weed density and dry weed biomass, dry weed biomass and peanut yield (kg/ha), dry weed biomass and peanut yield loss (percentage of check), weed density and pe

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7

Fedoruk, L. K., E. N. Johnson, and S. J. Shirtliffe. "The Critical Period of Weed Control for Lentil in Western Canada." Weed Science 59, no. 4 (2011): 517–26. http://dx.doi.org/10.1614/ws-d-11-00051.1.

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Weed control in lentil is difficult because lentil is a poor competitor with weeds and few POST broadleaf herbicides are available. Imadazolinone-tolerant lentils have more herbicide options, but the optimum timing for herbicide application is not known. The critical period of weed control (CPWC) is the period in a crop's life cycle when weeds must be controlled in order to prevent yield loss. The objective of this research was to determine the CPWC for lentil. We made lentil remain weedy or weed-free from 0 to 11 aboveground nodes to investigate the durations of weed interference and weed-fre

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8

SWATI WALIA and RAKESH KUMAR. "Effect of plant spacing and weed-management practices on growth, biomass and steviol glycosides of candyleaf under western Himalayas." Indian Journal of Agronomy 64, no. 3 (2001): 378–85. http://dx.doi.org/10.59797/ija.v64i3.5287.

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A field experiment was conducted during 2015 and 2016 to study the effect of plant spacing and weed-man- agement practices on development, yield and steviol glycosides of candyleaf [Stevia rebaudiana (Bertoni) Bertoni] in the western Himalayas. Treatments included 2 plant spacings (45 cm 45 cm and 60 cm 45 cm) and 5 weed- management practices [weedy check, weed-free, hand-weeding, pendimethalin at 1.5 kg/ha followed by 1 hand- weeding (HW) at 40 days after spray (DAS) and oxyfluorfen at 0.25 kg/ha followed by 1 HW at 40 DAS]. Weed population and weed dry biomass under different plant spacing r

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9

Naeem, Muhammad, Shahid Farooq, and Mubshar Hussain. "The Impact of Different Weed Management Systems on Weed Flora and Dry Biomass Production of Barley Grown under Various Barley-Based Cropping Systems." Plants 11, no. 6 (2022): 718. http://dx.doi.org/10.3390/plants11060718.

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Weeds are among the major issues responsible for reduction in yield and profit in any crop production system. Herbicides are the easiest and quickest solution of weeds; however, their frequent use exert negative consequences on environment, human health, and results in the evolution of herbicide-resistant weed species. Due to these reasons, alternative weed management methods that are less harmful to environment and human health are needed. This two-year study evaluated the impact of different weed management options, i.e., false seedbed (FS), allelopathic water extracts (AWE), chemical contro

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10

Nazir, Aijaz, Mohammad Anwar Bhat, Tauseef Ahmad Bhat, et al. "Comparative Analysis of Rice and Weeds and Their Nutrient Partitioning under Various Establishment Methods and Weed Management Practices in Temperate Environment." Agronomy 12, no. 4 (2022): 816. http://dx.doi.org/10.3390/agronomy12040816.

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A research trial was conducted at Agronomy Farm (SKUAST-K, Wadura, Jammu & Kashmir), during kharif 2017 and 2018 to evaluate nutrient removal in rice under various rice establishment methods and weed control measures. The study comprised of two factors: rice establishment techniques {Transplanting (TPR); Direct seeding (DSR) and System of rice intensification (SRI)} as main plot treatments and weed control measures {Butachlor @ 1500 g a.i ha−1 (B); Penoxsulam @ 22.5 g a.i ha−1 (P); Pyrazosulfuron ethyl + Pretilachlor @ 15 and 600 g a.i ha−1 (PP); Bensulfuron methyl + Pretilachlor @ 60 and

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11

Shahbazi, Saeed, Marjan Diyanat, Sareh Mahdavi, and Soheida Samadi. "Broadleaf weed control in rain-fed chickpea." Weed Technology 33, no. 5 (2019): 727–32. http://dx.doi.org/10.1017/wet.2018.40.

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AbstractWeeds are among the main limitations on chickpea production in Iran. The efficacy of herbicide treatments including linuron PPI, imazethapyr PPI, PRE, and POST, pendimethalin PPI and POST, bentazon POST, pyridate POST, and oxadiazon POST along with one or two hand weedings were evaluated for weed control and yield response in rain-fed chickpea in Aleshtar, Lorestan, Iran in 2015 and 2016. Wild safflower, threehorn bedstraw, wild mustard, and hoary cress were the predominant weed species in both experimental years. Total weed dry biomass in weedy check plots averaged 187 and 238 g m−2 i

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12

KOUSTA, Angeliki, Panayiota PAPASTYLIANOU, Nikolina CΗΕΙΜΟΝΑ, Ilias TRAVLOS, Ioanna KAKABOUKI, and Dimitrios BILALIS. "Effect of Fertilization and Weed Management on Weed Flora of Hemp Crop." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 77, no. 2 (2020): 44. http://dx.doi.org/10.15835/buasvmcn-hort:2020.0013.

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Hemp is known to have a competitive advantage over weeds. Despite its suppressive ability, weed infestation remains an important issue during the early growth of the crop. The aim of this study was to determine the effect of fertilization and weed management on weed flora and hemp growth parameters during initial growth in the 2019 season. The experiment was laid out in a split-split plot design with three replicates: three hemp cultivars as main plots, three fertilization treatments as sub-plots and two sub-sub-plots (weedy, weed free). For the computation of height and biomass weight, 10 pla

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13

Kousta, Angeliki, Panayiota Papastylianou, Ilias Travlos, Antonios Mavroeidis, and Ioanna Kakabouki. "Effect of Fertilization and Weed Management Practices on Weed Diversity and Hemp Agronomic Performance." Agronomy 13, no. 4 (2023): 1060. http://dx.doi.org/10.3390/agronomy13041060.

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The industrial hemp market is rapidly expanding, and best crop practices need to be assessed. This study aimed to determine the effect of fertilization and weed management on hemp crops and weed flora during the 2019 and 2020 growing seasons. Field experiments were laid out in a split–split plot design with three replicates: two hemp cultivars as main plots, three fertilization treatments as sub-plots, and three sub-sub-plots (weedy, weed-free, and herbicide application). For the computation of crop traits, 10 plants were randomly selected by each plot. Weed species were collected by quadrate

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14

Olsen, Jannie, Lars Kristensen, and Jacob Weiner. "Effects of density and spatial pattern of winter wheat on suppression of different weed species." Weed Science 53, no. 5 (2005): 690–94. http://dx.doi.org/10.1614/ws-04-144r2.1.

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Field experiments on suppression of three species (scentless chamomile, field poppy, and canola) by winter wheat sown in two different spatial patterns (normal 12.8-cm rows and a uniform, grid-like pattern) and three densities (204, 449, and 721 plants m−2) in two growing seasons were performed. The effects of crop-sowing density and pattern when weeds were controlled by herbicide were also investigated in one season. Weed and crop biomass were measured when weed biomass was at its maximum (late June/early July), and grain was harvested in August. Weed biomass comprised on average 30% of the t

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15

PANDEY, D.K. DWlVEDl, and R.K. PANDEY. "Efficacy of herbicides and fertilizer management on weed dynamics in wheat (Triticum aestivum)." Indian Journal of Agronomy 52, no. 1 (2001): 49–52. http://dx.doi.org/10.59797/ija.v52i1.4889.

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A field experiment was conducted during winter (rabl) season of 2002-03 and 2003-04 to study the efficacy of herbicides and fertilizer management on weed dynamics of wheat (Tn'ticum aestivum L. emend. Fiori & Paol.). The intensity of weeds as well as total weed count were unaffected by the method and level of fertilizer applica- tion, but side placement of fertilizer significantly reduced the total dry biomass of weeds, NPK depletion by weeds that improved the NPK uptake by the crop and produced 13.5 per cent higher grain yield than broadcast method of fertilizer application. Application o

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16

Chase, Carlene A., Odemari S. Mbuya, and Danielle D. Treadwell. "Water Infiltration in Fall Broccoli." HortScience 41, no. 4 (2006): 998B—998. http://dx.doi.org/10.21273/hortsci.41.4.998b.

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The effect of living mulches (LM) on weed suppression, crop growth and yield, and soil hydraulic conductivity were evaluated in broccoli in North Central Florida at Citra and in North Florida at Live Oak, using organic production methods. `Florida 401' rye, `Wrens Abruzzi' rye, black oat, and annual ryegrass, were either mowed or left untreated and compared with weedy and weed-free controls. Cover crop biomass was highest with `Florida 401' at both locations, intermediate with black oat and `Wrens Abruzzi', and lowest with ryegrass. The greatest weed infestation occurred with the weedy control

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17

Dominic J, Sturm, Kunz Christoph, Peteinatos Gerassimos, and Gerhards Roland. "Do cover crop sowing date and fertilization affect field weed suppression?" Plant, Soil and Environment 63, No. 2 (2017): 82–88. http://dx.doi.org/10.17221/1/2017-pse.

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The weed suppressive ability of oilseed radish (Raphanus sativus var. oleiformis Pers.) cover crop is attributed to high competitiveness for resources and biochemical effects on weeds. The oilseed radish cover crop was sown in five treatments plus an untreated control over a period of five weeks before and three weeks after winter wheat harvest. Additionally, fertilization effects on oilseed radish biomass and weed suppression were measured. The highest biomass of the cover crop was observed 12 weeks after harvest (WAH) when the oilseed radish was sown one week after harvest (1 WAH) (2015) and

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18

Bagheri, M., F. Zaefarian, B. Bicharanlou, and H. Ghanizadeh. "A Study of Intercropping of Maize with Sweet Basil and Borage." Cercetari Agronomice in Moldova 47, no. 2 (2014): 13–28. http://dx.doi.org/10.2478/cerce-2014-0013.

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Abstract Intercropping is one of the environmental friendly ways to improve the use of resources and weed control. A field experiment was performed on maize intercropped with sweet basil and borage under weed free and infestation conditions. The experimental design was a factorial based on randomized complete block design with three replicates. Factors included weed infestation levels (weed free and weed infestated) and intercropping ratios (100:0, 75:25, 50:50, 25: 75, and 0:100, maize: sweet basil or borage). The intercroppping treatments decreased weeds biomass compared to the monocultures

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19

Bordelon, Bruce P., and Stephen C. Weller. "Cover Crop Effects on Weed Control and Growth of First-year Grapevines." HortScience 30, no. 4 (1995): 801E—801. http://dx.doi.org/10.21273/hortsci.30.4.801e.

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Four cover crops were evaluated for weed control and effects on first-year vine growth. Winter wheat (cv. Cardinal), rye (cv. Wheeler), oats (cv. Ogle), and hairy vetch (no cultivar name) were either fall- or spring-planted and compared to cultivated and weedy control plots. Cover crop and weed biomass dry weight was collected twice during the growing season. Vines (Vitis labrusca cv. Steuben) were planted in the spring and destructively sampled at the end of the growing season for analysis of leaf area, leaf number, shoot length., shoot number, top growth dry weight, and root system dry weigh

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20

Ahmadi, Abdol Reza, Saeed Shahbazi, and Marjan Diyanat. "Efficacy of Five Herbicides for Weed Control in Rain-Fed Lentil (Lens culinaris Medik.)." Weed Technology 30, no. 2 (2016): 448–55. http://dx.doi.org/10.1614/wt-d-15-00125.1.

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Lentil is vulnerable to weed competition because of its short stature, slow establishment, and limited vegetative growth. Although the vast majority of lentil production is under rain-fed conditions, there is a little published information on weed control with herbicides in rain-fed lentils. Field experiments were conducted to determine the efficacy of nine herbicide treatments including fomesafen, imazethapyr, linuron, pendimethalin, and pyridate alone or in combination compared with one or two hand weeding(s) on weed control and yield response in rain-fed lentil in Khorramabad, Iran in 2012

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21

Pokhrel, Anil, Sangharsh Raj Dangi, and Bala Sharma. "Response of Soybean and Weeds to Various Weed Management Practices." Asian Journal of Advances in Agricultural Research 25, no. 7 (2025): 19–25. https://doi.org/10.9734/ajaar/2025/v25i7643.

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Aims: Soybean (Glycine max L.) is highly susceptible to weed competition during its early growth stages, which can cause significant yield losses if not managed properly. Therefore, a field experiment was conducted to evaluate the effectiveness of different weed management practices, including chemical (Pendimethalin, Metribuzin, Imazethapyr, and their combinations) and manual (one-hand and two-hand weeding), on soybean yield, growth attributes, weed density, and weed biomass. Study Design: This experiment was laid out in a randomized complete block design with three replications. Place and Du

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22

Ryan, Matthew R., William S. Curran, Alison M. Grantham, et al. "Effects of Seeding Rate and Poultry Litter on Weed Suppression from a Rolled Cereal Rye Cover Crop." Weed Science 59, no. 3 (2011): 438–44. http://dx.doi.org/10.1614/ws-d-10-00180.1.

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Growing enough cover crop biomass to adequately suppress weeds is one of the primary challenges in reduced-tillage systems that rely on mulch-based weed suppression. We investigated two approaches to increasing cereal rye biomass for improved weed suppression: (1) increasing soil fertility and (2) increasing cereal rye seeding rate. We conducted a factorial experiment with three poultry litter application rates (0, 80, and 160 kg N ha−1) and three rye seeding rates (90, 150, and 210 kg seed ha−1) in Pennsylvania and Maryland in 2008 and 2009. We quantified rye biomass immediately after mechani

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23

VIKAS GUPTA, MAHENDER SINGH, ANIL KUMAR, B.C. SHARMA, and DEEPAK KHER. "Influence of weed management practices on weed dynamics and yield of urdbean (Vigna mungo) under rainfed conditions of Jammu." Indian Journal of Agronomy 58, no. 2 (2001): 220–25. http://dx.doi.org/10.59797/ija.v58i2.4176.

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Experiments were conducted during kharif 2007 and 2009 in Inceptisols, to study the effect of different pre (PE) and post-emergence (POE) herbicides along with two hand weedings (HW) at 20 and 40 days after sowing (DAS) and weedy check on urdbean {Vigna mungo (L.) Hepper}. Highest seed yield was observed with two HWs at 20 and 40 DAS and the values were found statistically at par with POE application of imazethapyr 25 g/ha at 20 DAS. The highest weed control efficiency and lowest weed biomass was recorded with two HWs at 20 and 40 DAS fol- lowed by application of imazethapyr 25 g/ha (post-emer

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24

Awoke Mensa, Teshale Wube, and Tariku Simion. "Effect of weed control methods on weed biomass and grain yield of maize (Zea mays L.) under rainfed condition in Basketo Special District, Southern Ethiopia." International Journal of Science and Research Archive 9, no. 1 (2023): 168–73. http://dx.doi.org/10.30574/ijsra.2023.9.1.0362.

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Maize (Zea mays L.) is a major crop grown in Basketo Special district by smallholder farmers. However, its production and productivity is challenged by many factors of which weeds are the key factor that reduce the productivity of maize in the district. Therefore, field experiment was conducted at Basketo Special district during 2017 main cropping season under rainfed condition to evaluate weed control methods on weed biomass and grain yield of maize. The experiment consisted of six treatments namely; once hand hoeing at 20 days after crop emergence (DACE), twice hand hoeing at 20 and 40 DACE,

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25

Salonen, Jukka. "Performance of reduced herbicide doses in spring cereals." Agricultural and Food Science 2, no. 6 (1993): 537–50. http://dx.doi.org/10.23986/afsci.72679.

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The consequences of dose reduction of three new herbicide formulations were studied for the control of annual broad-leaved weeds in fields of spring barley (Hordeum vulgare L.) and spring wheat (Triticum aestivum L.). The herbicide formulations were MCPA/mecoprop-P, MCPA/dichlorprop-P and MCPA/fluroxypyr. The efficacy of the lowest recommended dose and a 30% lower rate were tested and compared with the reference herbicide tribenuron-methyl. Trials were conducted at seven sites for three years. Considerable annual fluctuations in weed infestation were recorded. Although the dose reduction occas

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26

Ryan, Matthew R., Steven B. Mirsky, David A. Mortensen, John R. Teasdale, and William S. Curran. "Potential Synergistic Effects of Cereal Rye Biomass and Soybean Planting Density on Weed Suppression." Weed Science 59, no. 2 (2011): 238–46. http://dx.doi.org/10.1614/ws-d-10-00110.1.

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Increasing crop density is a cultural weed management practice that can compliment the use of cover crops for weed suppression. In this research, we created a range of cover crop biomass and soybean densities to assess their weed-suppressive ability alone and in combination. The experiment was conducted in 2008 and 2009 in Maryland and Pennsylvania using five levels of cereal rye residue, representing 0, 0.5, 1.0, 1.5, and 2.0 times the ambient level, and five soybean densities ranging from 0 to 74 seeds m−2. Weed biomass decreased with increasing rye residue and weeds were completely suppress

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27

RAMANPREET KAUR, J.S. DEOL, and SIMERJEET KAUR. "Weed management in wheat as influenced by different rice residue management practices in rice-wheat cropping system." Indian Journal of Agronomy 70, no. 1 (2025): 20–28. https://doi.org/10.59797/ija.v70i1.6331.

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A field experiment was conducted to study the influence of rice residue management practices on weed dynamics and management practices in wheat crop during rabi 2019–20 and 2020–21 at Punjab Agricultural University, Ludhiana, Punjab. Results revealed that population and biomass of different weeds at 60 days after sowing was lower under Happy seeder (zero tillage with residue retention) as compared to other rice residue management practices of residue removal, burning and incorporation. Lower population and biomass of Phalaris minor was recorded in pinoxaden 50 g a.i./ha treated plots as compar

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ABDULLAH, YSA KHAN, R. KHAN, et al. "INFLUENCE OF VARIOUS WEED MANAGEMENT PRACTICES ON WEEDS AND YIELD COMPONENTS OF PEA (PISUM SATIVUM L.)." Biological and Clinical Sciences Research Journal 2024, no. 1 (2024): 1357. https://doi.org/10.54112/bcsrj.v2024i1.1357.

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A field experiment was conducted throughout the winter cropping season of the year 2018, at the New Developmental Research Farm (NDRF), the University of Agriculture-Peshawar, to assess the efficiency of techniques for weed control on weed suppression, and yield components of edible pea. The research was designed, using a Randomized Complete Block Design, with 13 treatments, which were repeated 3 times. The applied treatments comprised; Mulches (Eucalyptus leaves, weed biomass, and poplar leaves), herbicides (S-metolachlor, Pendimethalin, Haloxyfop-p-methyl, and Quizalofop-p-ethyl), and hand-w

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Zinati, Gladis M., Rita Seidel, Alison Grantham, Jeff Moyer, Victoria J. Ackroyd, and Steven B. Mirsky. "High-Residue Cultivation Timing Impact on Organic No-Till Soybean Weed Management." Weed Technology 31, no. 2 (2017): 320–29. http://dx.doi.org/10.1017/wet.2016.24.

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A cereal rye cover crop mulch can suppress summer annual weeds early in the soybean growing season. However, a multi-tactic weed management approach is required when annual weed seedbanks are large or perennial weeds are present. In such situations, the weed suppression from a cereal rye mulch can be supplemented with the use of high-residue cultivators which can prolong the weed-free period during soybean growth. Research trials were conducted to determine the optimum timing of high-residue cultivation for weed control in rolled-crimped cereal rye mulches. Treatments included three cultivatio

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Afun, J. V. K., D. E. Johnson, and A. Russell-Smith. "Weeds and natural enemy regulation of insect pests in upland rice; a case study from West Africa." Bulletin of Entomological Research 89, no. 5 (1999): 391–402. http://dx.doi.org/10.1017/s0007485399000528.

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AbstractEffects of five weed management regimes on abundance of weeds, insect pests, generalist predators and on pest damage and rice yield were investigated in upland rice in Côte d‘Ivoire over two years. In both years there was a highly significant negative correlation between weed biomass and grain yield across all treatments. Only two pest insect groups,Nephotettixspp. (Cicadellidae) and seed sucking Heteroptera, were consistently more abundant in unweeded plots and had a consistent significant positive correlation between abundance and weed biomass across all seven treatments. These polyp

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Werle, Isabel Schlegel, Edicarlos Castro, Carolina Pucci, Bhawna Soni Chakraborty, Shaun Broderick, and Te Ming Tseng. "Identification of Weed-Suppressive Tomato Cultivars for Weed Management." Plants 11, no. 3 (2022): 411. http://dx.doi.org/10.3390/plants11030411.

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Weed-suppressive crop cultivars are a potentially attractive option in weed management strategies (IWM). A greenhouse study was conducted at the R. R. Foil Plant Science Research Center, Starkville, MS, to assess the potential weed-suppressive ability of 17 tomato cultivars against Palmer amaranth (Amaranthus palmeri S. Wats), yellow nutsedge (Cyperus esculentus L.), and large crabgrass (Digitaria sanguinalis L.). The experiment was a completely randomized design, with four replications, and was repeated twice. The height, chlorophyll, and dry weight biomass of the weeds were measured 28 days

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LOBZANG STANZEN, ANIL KUMAR, B.C. SHARMA, R. PUNIYA, and ASHU SHARMA. "Weed dynamics and productivity under different tillage and weed-management practices in maize (Zea mays)wheat (Triticum aestivum) cropping sequence." Indian Journal of Agronomy 61, no. 4 (2001): 449–54. http://dx.doi.org/10.59797/ija.v61i4.4411.

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A field experiment was conducted during 201314 and 201415 at Sher-e-Kashmir University of Agriculture Science and Technology of Jammu, to study the effect of tillage and weed-management practices on weed dy- namics and productivity in maize (Zea mays L.)wheat {Triticum aestivum (L.) emend. Fiori & Paol.] cropping se- quence. Weed density, weed biomass, grain and stover yields of maize were found statistically at par in continu- ous conventional tillage and rotational conventional tillage in maize and zero tillage in wheat under maize. How- ever, in wheat the density and biomass of grassy w

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Mwendwa, James M., William B. Brown, Paul A. Weston, and Leslie A. Weston. "Evaluation of Barley Cultivars for Competitive Traits in Southern New South Wales." Plants 11, no. 3 (2022): 362. http://dx.doi.org/10.3390/plants11030362.

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The potential of multi-purpose barley (Hordeum vulgare L.) cultivars to suppress weeds while maintaining optimal yield and grain quality has been reported but not recently evaluated in replicated field trials performed under southern Australian field conditions. Therefore, to investigate this potential, aboveground competitive traits were assessed in nine genetically diverse commercial barley cultivars in 2015, 2016 and 2017, in two locations in the Riverina region of NSW in replicated field trials performed in the absence of pre-emergent herbicide treatment. Crop and weed establishment, early

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Ramesh, K., S. Vijaya Kumar, P. K. Upadhyay, and B. S. Chauhan. "Revisiting the concept of the critical period of weed control." Journal of Agricultural Science 159, no. 9-10 (2021): 636–42. http://dx.doi.org/10.1017/s0021859621000939.

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AbstractWeeds are a major biotic constraint to the production of crops. Studies on the critical period of weed control (CPWC) consider the yield loss due to the presence of all weeds present in the crop cycle. The CPWC is the time interval between the critical timing of weed removal (CTWR) and the critical weed-free period (CWFP), and the weed presence before and after the extremes of CTWR and CWFP may not significantly reduce crop yield. The crop yield is taken into consideration and weed density or biomass of individual weeds (annual or perennial) is not so important while calculating the CP

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Bybee-Finley, K. Ann, Steven B. Mirsky, and Matthew R. Ryan. "Crop Biomass Not Species Richness Drives Weed Suppression in Warm-Season Annual Grass–Legume Intercrops in the Northeast." Weed Science 65, no. 5 (2017): 669–80. http://dx.doi.org/10.1017/wsc.2017.25.

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Intercropping with functionally diverse crops can reduce the availability of resources that could otherwise be used by weeds. An experiment was conducted across 6 site-years in New York and Maryland in 2013 and 2014 to examine the effects of functional diversity and crop species richness on weed suppression. We compared four annual crop species that differed in stature and nitrogen acquisition traits: (1) pearl millet, (2) sorghum sudangrass, (3) cowpea, and (4) sunn hemp. Crops were seeded in monoculture and in three- and four-species mixtures using a replacement design in which monoculture s

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Maimunah, Margi Asih, Valensi Kautsar, Putu Oki Bimantara, et al. "Weeding Frequencies Decreased Rice–Weed Competition and Increased Rice N Uptake in Organic Paddy Field." Agronomy 11, no. 10 (2021): 1904. http://dx.doi.org/10.3390/agronomy11101904.

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Different weeding frequencies (WFs)―0WF, 2WF, 4WF, 6WF, and 8WF―were adopted in an organic rice field to investigate their influence on weed types, rice and weed biomass, rice tiller and weed number, N concentration, and N uptake. The study field was located in Tsuruoka, Yamagata, Japan. Rice (cv. Sasanishiki) was planted from May to September 2019, and all weeding events were carried out until 49 days after transplantation (DAT) using a rotary weeder. Rice and weed samples were collected at 60, 88, and 110 DAT. Echinochloa crus-galli (E. crus-galli), Schoenoplectus juncoides, and Monochoria v

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Villegas-Fernández, Ángel M., Ahmed A. Amarna, Juan Moral, and Diego Rubiales. "Intercropping as a Strategy for Weed Management in Faba Bean (Vicia faba L.)." Agronomy 14, no. 6 (2024): 1170. http://dx.doi.org/10.3390/agronomy14061170.

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Faba bean is an important legume crop worldwide, which is grown both for food and feed. As for many legume crops, postemergence weed control is difficult. The aim of this work was to assess the potential of intercropping in weed management by assessing the effect of mixing faba bean with different crops (wheat, barley, and pea) on weeds in the South of Spain. Four field trials were conducted over four consecutive seasons, and the results found that the addition of alternate intercropping of faba bean and barley achieved high levels of weed control, both for coverage and biomass (92.7% and 76.6

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Rezvani, M., F. Zaefarian, and M. Jovieni. "Weed suppression ability of six soybean [Glycine max (L.) Merr.] varieties under natural weed development conditions." Acta Agronomica Hungarica 61, no. 1 (2013): 43–53. http://dx.doi.org/10.1556/aagr.61.2013.1.5.

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The weed suppression ability of different soybean varieties was studied in a field experiment in 2010. The experiment was carried out in a randomized complete block design using a split-plot arrangement with 3 replicates. The main plots were either weedfree (hand weeding) or infested with the natural weed population (weedy). Six soybean varieties (Sari, Telar, Sahar, Hill, 032 and 033) were randomized within the main plots. The relative biomass total (RBT), relative crowding coefficient (RCCcw) and competitive balance index (Cb) were recorded and were regressed against crop traits under weedy

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GHAMARI, Hossein, and Goudarz AHMADVAND. "Dry Bean Morpho-Physiological Responses to Gradual Weed Biomass Accumulation." Notulae Scientia Biologicae 5, no. 1 (2013): 74–78. http://dx.doi.org/10.15835/nsb518353.

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Field study was carried out in 2011 in west of Iran to assess responses of dry bean (Phaseolus vulgaris L.) morpho-physiological traits to gradual weed biomass accumulation. The treatments consisted of two different periods of weed interference, which weeds either infested the plots or removed for an increasing duration of time (0, 10, 20, 30, 40, 50 days) after crop emergence. Relative dominance and relative importance of weed species fluctuated over the crop cycle. As the duration of weed interference was increased, a declining trend of crop growth rate (CGR) was observed. When weeds were al

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Nord, Eric A., Matthew R. Ryan, William S. Curran, David A. Mortensen, and Steven B. Mirsky. "Effects of Management Type and Timing on Weed Suppression in Soybean No-Till Planted into Rolled-Crimped Cereal Rye." Weed Science 60, no. 4 (2012): 624–33. http://dx.doi.org/10.1614/ws-d-12-00024.1.

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Knowledge of weed emergence periodicity can inform the timing and choice of weed management tactics. We tested the effects of weed management system (conventional [CNV] and herbicide-free [HF]), timing of rye sowing (two dates), timing of soybean planting (5 planting dates, 3 in each system), and supplemental control (with and without) on weed suppression and weed community composition in soybean no-till planted into a cereal rye cover crop. Cereal rye was terminated with a roller-crimper and herbicide (CNV) or with a roller-crimper alone (HF), and supplemental weed control was achieved with a

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Pritts, Marvin P., and Mary Jo Kelly. "Weed Competition in a Mature Matted Row Strawberry Planting." HortScience 39, no. 5 (2004): 1050–52. http://dx.doi.org/10.21273/hortsci.39.5.1050.

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Various levels of weed competition were implemented in a second-year well-established strawberry (Fragaria ×ananassa `Jewel') planting by cultivating and hand weed removal for defined periods of time over 3 years. The impact of weeds on subsequent productivity was then determined. Sixteen treatments were established where weeds were allowed to grow for defined periods (0, 1, 2, 3, 4, or 5 months) throughout the growing season. Treatments were maintained in the plots for 3 consecutive years. Spring weed biomass in 1997 had no impact on yield that same year. Weed biomass in 1997 was negatively a

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Lindquist, John L., Sean P. Evans, Charles A. Shapiro, and Stevan Z. Knezevic. "Effect of Nitrogen Addition and Weed Interference on Soil Nitrogen and Corn Nitrogen Nutrition." Weed Technology 24, no. 1 (2010): 50–58. http://dx.doi.org/10.1614/wt-09-070.1.

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Weeds cause crop loss indirectly by reducing the quantity of resources available for growth. Quantifying the effects of weed interference on nitrogen (N) supply, crop growth, and N nutrition may assist in making both N and weed management decisions. Experiments were conducted to quantify the effect of N addition and weed interference on soil nitrate-N (NO3-N) over time and the dependence of corn growth on NO3-N availability, determine the corn N nutrition index (NNI) at anthesis, and evaluate if relative chlorophyll content can be utilized as a reliable predictor of NNI. Urea was applied at 0,

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A.P. Gokul and T. Uma Maheswari. "Impact of bio solarization with agricultural green waste on biological weed control in tomato." Ecology, Environment and Conservation 31, no. 01 (2025): 200–205. https://doi.org/10.53550/eec.2025.v31i01.034.

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Since they compete with crops and impede output, weeds pose a severe danger to agriculture. This study therefore sought to evaluate the use of agricultural green waste along with solarization for weed control. There were three replications and ten treatment combinations in a factorial randomized block design. The two components of the treatments are solarization (with and without) and five types of green agricultural wastes. Increased weed biomass, weed population, and weed control index were seen in non-solarized soil. Weed population, biomass, and weed control index decreased in solarized pl

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Jordan, N., and S. Huerd. "Effects of soil fungi on weed communities in a corn–soybean rotation." Renewable Agriculture and Food Systems 23, no. 2 (2008): 108–17. http://dx.doi.org/10.1017/s1742170508002226.

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AbstractIn a variety of ecosystems, interactions between soil microbiota and weedy plants can strongly affect population and community dynamics of these plants. However, weed–soil microbe interactions are not well characterized in field-crop agroecosystems. In Minnesota (USA), we repeatedly applied a fungicide (benomyl) to field plots in a corn–soybean crop rotation in each of 3 years, and sowed experimental weed communities containing host species for arbuscular-mycorrhizal fungi (AMF) and non-host species. Benomyl typically suppresses formation of mycorrhizal symbiosis in AMF-host plant spec

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Fonteyne, Simon, Ravi Gopal Singh, Bram Govaerts, and Nele Verhulst. "Rotation, Mulch and Zero Tillage Reduce Weeds in a Long-Term Conservation Agriculture Trial." Agronomy 10, no. 7 (2020): 962. http://dx.doi.org/10.3390/agronomy10070962.

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Weed management is one of the main challenges of conservation agriculture. Although all three components of conservation agriculture (minimal tillage, permanent soil cover and crop diversification) can reduce weed populations, these effects may only become apparent in the medium to long term. This study evaluated weed biomass, density and diversity with and without herbicide control in a long-term trial initiated in 1991 in the Mexican Highlands to evaluate all three components of conservation agriculture. Data were collected in 2004, 2005, 2013, 2014 and 2015. Weed density and biomass were ge

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SASODE, D. S., EKTA JOSHI, DINESH JINGER, RAJNI SINGH SASODE, VARSHA GUPTA, and Y. K. SINGH. "Conservation tillage and weed management practices effect on weeds, yield and profitability of cowpea (Vigna unguiculata)." Indian Journal of Agricultural Sciences 90, no. 1 (2020): 86–90. http://dx.doi.org/10.56093/ijas.v90i1.98548.

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An experiment was conducted from 2014-2018 to find out the effect of conservation tillage and weed management methods on weed flora, growth and yield of cowpea (Vigna unguiculata (L.) Walp. cv. RC 101) under pearlmilletmustard- cowpea cropping system. The results showed that amongst tillage treatments, zero tillage with residue application during both kharif and rabi season and only during rabi for four years significantly increased the the grain yield by 49 and 18%, gross returns by 43 and 14% and reduced the total weed biomass by 48 and 32%, respectively with higher weed control efficiency c

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Zandvakili, Omid R., Masoud Hashemi, Mohammad R. Chaichi, et al. "Role of cover crops and nicosulfuron dosage on weed control and productivity in corn crop." Weed Science 68, no. 6 (2020): 664–72. http://dx.doi.org/10.1017/wsc.2020.71.

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AbstractA field experiment was conducted at the research farm of the University of Tehran to evaluate the effect of cover crops and herbicide (nicosulfuron) dosage on corn (Zea mays L.) productivity. Cover crops suppressed weed biomass and density during the fallow period; however, there was no significant effect on weed biomass or weed density in the subsequent corn crop. A mixture of cereal rye (Secale cereale L.) and hairy vetch (Vicia villosa Roth.) was the most weed-suppressive cover in the fallow period. Nicosulfuron applied at different amounts suppressed weed biomass and density in cor

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Hristova, Maria. "Impact of organic and mineral mulch on species richness and weed biomass in newly established wildflower meadows." Bulgarian Journal of Soil Science, Agrochemistry and Ecology 58, no. 4 (2024): 43–50. https://doi.org/10.61308/fpjl8210.

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Creating wildflower meadows through sowing often results in weed emergence during the first year, with irrigation further encouraging annual weed germination. Mulching helps to reduce weeds, alter nutrient levels, and retain soil moisture. This study aimed to investigate the effects of organic (compost) and inorganic (sand) mulch on the number of germinated wildflower species and weed biomass over a two-year period without irrigation. A late autumn (European continental climate) sowing was performed using three wildflower mixtures. Sand and compost, each applied 75 mm thick, were used as mulch

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Boydston, R. A., and M. M. Williams. "Sweet corn hybrid tolerance to weed competition under three weed management levels." Renewable Agriculture and Food Systems 31, no. 4 (2015): 281–87. http://dx.doi.org/10.1017/s1742170515000204.

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AbstractNearly all commercial sweet corn fields contain weeds that escaped management and, therefore, sweet corn often suffers yield losses due to weed competition. For this reason, field trials were conducted from 2009 to 2011 near Prosser, WA and Urbana, IL to evaluate the responses of weeds and four sweet corn hybrids to three levels of weed management; weed free, high intensity cultivation (HC), and low intensity cultivation (LC). Weed management level had the greatest impact on early season weed densities and HC reduced final weed biomass more than LC in 2 of 4 site-years. Two taller swee

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Eberlein, Charlotte V., Paul E. Patterson, Mary J. Guttieri, and Jeffrey C. Stark. "Efficacy and Economics of Cultivation for Weed Control in Potato (Solanum tuberosum)." Weed Technology 11, no. 2 (1997): 257–64. http://dx.doi.org/10.1017/s0890037x00042925.

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A 3-year study was conducted in irrigated potato to compare weed control efficacy and economics of hilling plus one or two cultivations with the standard treatment of hilling plus a preemergence application of pendimethalin plus metribuzin. Trials were conducted under both weedy and weed-free conditions. Common lambsquarters and redroot pigweed were present in weedy treatments each year; significant populations of hairy nightshade and green foxtail also were present one year. When weed populations were low or moderate (< 45 plants/m2), total weed biomass in the hilling plus one cultivation

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