scholarly journals Changes in weed species since the introduction of glyphosate-resistant cotton

2013 ◽  
Vol 64 (8) ◽  
pp. 791 ◽  
Author(s):  
Jeff Werth ◽  
Luke Boucher ◽  
David Thornby ◽  
Steve Walker ◽  
Graham Charles
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Weed Species ◽  
Sonchus Oleraceus ◽  
Cropping Season ◽  
Conyza Bonariensis ◽  
Major Species ◽  
Chloris Virgata ◽  
A Minor ◽  
Over The Top

Weed management practices in cotton systems that were based on frequent cultivation, residual herbicides, and some post-emergent herbicides have changed. The ability to use glyphosate as a knockdown before planting, in shielded sprayers, and now over-the-top in glyphosate-tolerant cotton has seen a significant reduction in the use of residual herbicides and cultivation. Glyphosate is now the dominant herbicide in both crop and fallow. This reliance increases the risk of shifts to glyphosate-tolerant species and the evolution of glyphosate-resistant weeds. Four surveys were undertaken in the 2008–09 and 2010–11 seasons. Surveys were conducted at the start of the summer cropping season (November–December) and at the end of the same season (March–April). Fifty fields previously surveyed in irrigated and non-irrigated cotton systems were re-surveyed. A major species shift towards Conyza bonariensis was observed. There was also a minor increase in the prevalence of Sonchus oleraceus. Several species were still present at the end of the season, indicating either poor control and/or late-season germinations. These included C. bonariensis, S. oleraceus, Hibiscus verdcourtii and Hibiscus tridactylites, Echinochloa colona, Convolvulus sp., Ipomea lonchophylla, Chamaesyce drummondii, Cullen sp., Amaranthus macrocarpus, and Chloris virgata. These species, with the exception of E. colona, H. verdcourtii, and H. tridactylites, have tolerance to glyphosate and therefore are likely candidates to either remain or increase in dominance in a glyphosate-based system.

Effectiveness of glufosinate, dicamba, and clethodim on glyphosate-resistant and susceptible populations of five key weeds in Australian cotton systems

2021 ◽  
pp. 1-20
Author(s):  
Jeff Werth ◽  
David Thormby ◽  
Michelle Keenan ◽  
James Hereward ◽  
Bhagirath Singh Chauhan
Keyword(s):  
Herbicide Resistance ◽  
Weed Management ◽  
Resistance Management ◽  
Sonchus Oleraceus ◽  
Conyza Bonariensis ◽  
Resistant Population ◽  
Susceptible Populations ◽  
Chloris Virgata ◽  
Effective Treatments

XtendFlexTM cotton with resistance to glyphosate, glufosinate and dicamba may become available in Australia. Resistance to these herbicides enables two additional modes of action to be applied in crop. The double knock strategy, typically glyphosate followed by paraquat, has been a successful tactic for control of glyphosate-resistant in fallow situations in Australia. Glufosinate is a contact herbicide, and may be useful as the second herbicide in a double knock for use in XtendFlexTM cotton crops. We tested the effectiveness of glufosinate applied at intervals of 1, 3, 7, and 10 d after initial applications of glyphosate, dicamba, clethodim and glyphosate mixtures with dicamba or clethodim on glyphosate-resistant and susceptible populations of Conyza bonariensis, Sonchus oleraceus, Chloris virgata, Chloris truncata and Echinochloa colona. Effective treatments for Conyza bonariensis with 100% control were dicamba and glyphosate+dicamba followed by glufosinate independent of the interval between applications. Sonchus oleraceus was effectively controlled in Experiment 1 by all treatments. However, in Experiment 2 effective treatments were dicamba and glyphosate+dicamba followed by glufosinate (99.3 – 100% control). Timing of the follow-up glufosinate did not affect the control achieved. Consistent control of Chloris virgata was achieved with glyphosate, clethodim or glyphosate+clethodim followed by glufosinate at 7 and 10 d intervals (99.7 – 100% control). Control of Chloris truncata was inconsistent. The best treatment for C. truncata was glyphosate+clethodim followed by glufosinate 10 d later (99.8 – 100% control). Echinochloa colona was effectively controlled with all treatments except for glyphosate on the glyphosate-resistant population. Additional in-crop use of glufosinate and dicamba should be beneficial for weed management in XtendFlexTM cotton crops, when utilising the double knock tactic with glufosinate. For effective herbicide resistance management, it is important that these herbicides be used in addition to, rather than substitution for, existing weed management tactics.

scholarly journals Differential germination characteristics of glyphosate-resistant and glyphosate-susceptible Chloris virgata populations under different temperature and moisture stress regimes

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0253346
Author(s):  
Het Samir Desai ◽  
Bhagirath Singh Chauhan
Keyword(s):  
Weed Control ◽  
Incubation Period ◽  
Weed Management ◽  
Osmotic Potential ◽  
Management Practices ◽  
Moisture Stress ◽  
Weed Species ◽  
Temperature Regimes ◽  
Alternating Temperature ◽  
Chloris Virgata

Thorough knowledge of the germination behavior of weed species could aid in the development of effective weed control practices, especially when glyphosate resistance is involved. A study was conducted using two glyphosate-resistant (GR) (SGW2 and CP2) and two glyphosate-susceptible (GS) (Ch and SGM2) populations of Chloris virgata, an emerging and troublesome weed species of Australian farming systems, to evaluate their germination response to different alternating temperature (15/5, 25/15 and 35/25°C with 12 h/12 h light/dark photoperiod) and moisture stress regimes (0, -0.1, -0.2, -0.4, -0.8 and -1.6 MPa). These temperature regimes represent temperatures occurring throughout the year in the eastern grain region of Australia. Seeds germinated in all the temperature regimes with no clear indication of optimum thermal conditions for the GR and GS populations. All populations exhibited considerable germination at the lowest alternating temperature regime 15/5°C (61%, 87%, 49%, and 47% for Ch, SGM2, SGW2, and CP2, respectively), demonstrating the ability of C. virgata to germinate in winter months despite being a summer annual. Seed germination of all populations was inhibited at -0.8 and -1.6 MPa osmotic potential at two alternating temperature regimes (15/5 and 35/25°C); however, some seeds germinated at 25/15°C at -0.8 MPa osmotic potential, indicating the ability of C. virgata to germinate in arid regions and drought conditions. Three biological parameters (T10: incubation period required to reach 10% germination; T50: incubation period required to reach 50% germination; and T90: incubation period required to reach 90% germination) suggested late water imbibition with increasing moisture stress levels. The GR population SGW2 exhibited a distinctive pattern in T10, T50, and T90, possessing delayed germination behaviour and thus demonstrating an escape mechanism against pre-plating weed management practices. Knowledge gained from this study will help in developing site-specific and multi-tactic weed control protocols.

scholarly journals Aspectos sobre el control de malezas compuestas en pastos dedicados a la ganadería de leche

2004 ◽  
Vol 5 (1) ◽  
pp. 76
Author(s):  
Juan Manuel Arrieta Herrera
Keyword(s):  
Seed Germination ◽  
Weed Management ◽  
Management Practices ◽  
Picolinic Acid ◽  
Weed Species ◽  
Sonchus Oleraceus ◽  
Cultural Methods ◽  
High Soil Moisture ◽  
Potential Methods ◽  
Senecio Inaequidens

<p>Con el objeto de encontrar métodos de control oportunos y eficientes de <em>Senecio inaequidens </em>y <em>Sonchus oleraceus</em>, se desarrollaron una serie de observaciones sobre la ecofisiología y morfología de estas especies de malezas y se probaron algunos métodos de control cultural, químico y biológico. Los resultados mostraron que la edad de la semilla, la cantidad y calidad de la luz percibida, tienen una incidencia proporcional sobre la tasa de germinación. La relación entre la temperatura día/noche es inversamente proporcional a la producción de capítulos florales y hojas, con óptimos entre 20°/15° C. Al analizar la curva fenológica de <em>S. inaequidens</em>, se encontró que los 40 días es la época óptima de contro, mientras que a los 50 días la planta toma la forma de roseta y adquiere resistencia bioquímica a grandes grupos de herbicidas. Los resultados indican que el crecimiento y desarrollo de <em>S. inaequidens </em>se incrementa bajo condiciones de alta humedad del suelo, de allí que esta especie coloniza fácilmente bordes de canales y áreas inundadas en lotes agrícolas. En cuanto al control químico, <em>S. inaequidens </em>es una especie cuyo estado adulto es muy tolerante al amplio grupo de herbicidas derivados de los fenoxidos, del ácido benzoico, del ácido picolínico y de las isoxazolidinonas. Cuando se usaron algunos métodos mecá­nicos en la preparación del suelo, para el manejo del banco de semillas de malezas, el renovador de praderas redujo en un 23% el número de semillas; posteriormente se realizan dos pases de guadaña cada 45 días para cortar la floración de la maleza que emerge posteriormente; la reducción fue de 20% más. En cuanto al control biológico se encontraron dos especies de insectos: <em>Homeosoma oconoquensis </em>y <em>Ensina hyallipennis</em>, cuya actividad redujo en más de 50% las poblaciones de <em>Senecio inaequidens </em>y <em>Sonchus oleraceus</em>, siendo su incidencia y severidad mayor en el segundo semestre del año. La información generada permite suponer que los parámetros morfológicos y ecofisio­lógicos analizados servirían como herramientas de conocimiento que, integradas con algunos métodos de manejo cultural, biológico y químico, conformarían un modelo para el control de estas especies de malezas en praderas de trópico alto.</p><p> </p><p class="Pa19"><strong>Control Studies on compositae weeds in highland pastures.</strong></p><p class="Default">A series of physiological and morpholo­gical studies was conducted to identify potential methods to control the weeds <em>Senecio inaequidens </em>and <em>Sonchus oleraceus </em>in highland pastures of the Colombian Andean Region. The effect of light as well as the day/night temperature ratios on the weed seed germination and weed growth was measured. Results indicated that seed age and both qua­lity and quantity of light affected the seed germination of both weed species. Day/light temperature ratio (with an optimum at 20/15°C) did not affect leaf or achene production. Based on phenological curves for these species it is recommended that control methods should be applied before 40 days after weed germination, since at this stage the weed control turns to be extremely difficult due to the formation of a roset­te structure that makes the plant more resistant to phenoxid, benzoic, picolinic acid, and isoxazolidone herbicides. This study also indicated that senecio’s growth and development are favored by high soil moisture, which explains the invasive behavior of this weed on irrigation channels and flooded areas. Two cultural methods were tested to reduce the weed seeds in the soil. The “pasture renovator” system showed a 23% seed reduction, while mowing the pasture every 45 days resulted in a 20% seed reduction. Additionally two poten­tially useful biocontrol agents were identified: <em>Homeosoma oconequensis </em>and <em>Ensina Hyallipennis </em>which reduced to 50 % or more the population of the two weeds. Results suggest that morpholo­gical and ecophysiological parameters could be used to design and develop weed management practices (cultural, chemical and biological), which could be integrated into an economically fea­sible weed management model.</p>

scholarly journals Herbicide Application Timings on Weed Control and Jack-O-Lantern Pumpkin Yield

2012 ◽  
Vol 22 (2) ◽  
pp. 201-206 ◽  
Author(s):  
S. Alan Walters ◽  
Bryan G. Young
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Production Systems ◽  
Seedling Emergence ◽  
Soil Surface ◽  
Growing Season ◽  
Weed Species ◽  
Application Timing ◽  
Over The Top

A study was conducted in a no-tillage (NT) jack-o-lantern pumpkin (Cucurbita pepo) field following winter wheat (Triticum aestivum) harvest to determine the effects of using registered herbicides at various timings on weed control and pumpkin yield. All application timings used in this study were important to maximize weed control over the pumpkin growing season. For an initial stale seedbed burndown treatment, paraquat provided better broadleaf weed control than glyphosate, which lead to greater pumpkin yields. The use of s-metolachlor + halosulfuron-methyl preemergence (PRE) and clethodim postemergence (POST) gave the best results for the second series of herbicide applications which related to higher pumpkin yields compared with none or only a PRE application. The last application timing (midseason POST-directed paraquat application between rows) also improved weed control and provided higher pumpkin yields compared with no treatment. Growers who use a stale seedbed burndown treatment in NT pumpkin production, before seedling emergence or transplanting, will generally use glyphosate although this study indicated that paraquat may prove to be a better choice depending on the weed species that are present at this application timing. Most weed control in NT pumpkin production is achieved by a PRE application of various tank-mixed herbicides for both grass and broadleaf weed control, with a POST grass herbicide, a POST application of halosulfuron-methyl, or both [for control of nutsedge (Cyperus sp.), specific broadleaf weed species, or both] applied 3 to 4 weeks later, and this study indicated that the use of labeled PRE and POST herbicides are essential to optimize weed control and pumpkin yields in NT. Most pumpkin growers do not use a POST-directed application of a nonselective herbicide (such as paraquat) before vines cover the soil surface although it appears that this application may be warranted to control weeds that have emerged later in the growing season to maximize pumpkin yield, especially if POST midseason over-the-top herbicide applications are not used. This study indicated that in addition to applying the limited PRE and POST herbicides available for weed control in pumpkin, the use of other chemical weed management practices (e.g., stale seedbed herbicide treatments or POST-directed nonselective herbicide applications) can provide valuable weed control in NT production systems and should be considered by growers to maximize pumpkin yield.

scholarly journals Evaluation of Different Weed Management Practices on Growth Variables and Yield of Wheat Varieties

2020 ◽  
pp. 7-30
Author(s):  
Md. Golam Mostafa ◽  
Syed Arvin Hassan ◽  
Md. Ehsanul Haq ◽  
Md. Ahasan Habib ◽  
Kaniz Fatema ◽  
...  
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Management Practices ◽  
Cynodon Dactylon ◽  
Chenopodium Album ◽  
Cyperus Rotundus ◽  
Alternanthera Philoxeroides ◽  
Weed Species ◽  
Wheat Varieties ◽  
Hand Weeding

A field experiment was conducted in medium fertile soil at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November 2017 to April 2018 in Rabi season with a view to evaluate the performance of wheat varieties under different weed control methods. The experiment was carried out with three varieties i.e. BARI Gom-28, BARI Gom-29 and BARI Gom-30 in the main plot and five weed management methods viz. control (no weeding), two hand weeding at 20 and 40 DAS, Panida 33EC (Pendimethalin) @ 2000 ml ha-1 at 5 DAS pre-emergence, Afinity 50.75WP (Isoproturon) 1500 g ha-1 at 25 DAS as post-emergence herbicide and Panida 33EC (Pendimethalin) @ 2000 ml ha-1 at 5 DAS + Afinity 50.75WP (Isoproturon)1500 g ha-1 at 25 DAS in the sub plot in split plot design. Nine different major weed species were found in the field such as Cynodon dactylon, Cyperus rotundus, Echinochloa colonum, Eleusine indica, Chenopodium album, Alternanthera philoxeroides, Brassica kaber, Leliotropium indicum, Vicia sativa. Results reveled that BARI Gom-30 contributed the highest grain yield 3.01 tha-1. Pre-emergence application of Panida 33EC controlled weeds significantly which showed highest growth followed by yield achieved in wheat. BARI Gom-30 in combination with Panida 33EC produced the highest grain yield 3.52 tha-1 while the lowest grain yield 2.09 t ha-1 was obtained from BARI Gom-28 with no weeding treatment. Results reveled that Panida 33EC (pre-emergence) was found more effective to controlling weeds in wheat. Results of the study finally reveled that Panida 33EC might be considered as a feasible option for combating weed and ensuring higher yield in wheat cultivation.

scholarly journals Relation between Soil Weed Seedbank and Weed Management Practises and Diversity in Farms in Kisii Central Sub County, Nyanza

2020 ◽  
Vol 10 ◽  
pp. 1-14
Author(s):  
Charles N. Nyamwamu ◽  
Rebecca Karanja ◽  
Peter Mwangi
Keyword(s):  
Seed Bank ◽  
Weed Management ◽  
Management Practices ◽  
Soil Seed Bank ◽  
Shannon Index ◽  
Weed Seed ◽  
Weed Species ◽  
Western Kenya ◽  
Weed Diversity ◽  
Hand Weeding

This study sought to determine the relation between soil weed seed bank and weed management practices and diversity in farms in Kisii Central Sub County, Western Kenya. Eight administrative sub-locations were randomly selected. Ten farms were selected at equal distance along transect laid across each sub-location. Weed soil seed bank was assessed from soil samples collected from each of the farms; a sub-sample was taken from a composite sample of ten soil cores of 5cm diameter and 15cm deep and placed in germination trays in a greenhouse. Weed diversity in soil weed seedbank was calculated using the Shannon index (H’). Twelve weed species from 12 genera of nine families were recorded. Diversity of the weed species in soil weed seed bank was (H'=1.48). Weed management practises significantly affected weed species soil weed seedbank reserves. Use of inefficient and ineffective hand-weeding techniques resulted in high weed species diversity and abundance.

Group characteristics of tea growers relative to weed management: a case study in southwestern China

2019 ◽  
Vol 33 (6) ◽  
pp. 847-854
Author(s):  
Guoqi Chen ◽  
Bin Zhang ◽  
Qiong Wu ◽  
Linhong Jin ◽  
Zhuo Chen ◽  
...  
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Guizhou Province ◽  
Cooperative Groups ◽  
Weed Species ◽  
Training Experience ◽  
Farmer Training ◽  
Group Characteristics

AbstractFarmer training is important to improve weed management practices in tea cultivation. To explore the group characteristics of tea growers, we interviewed 354 growers in Guizhou Province, China. Sixty-one percent of the respondents planted tea for companies or cooperative groups, and 56% managed tea gardens larger than 10 ha. Self-employed tea growers tended to be older and smallholders, and to apply herbicides and conduct weed control less frequently (P < 0.05). Approximately 87% of the respondents conducted weed control two to four times yr−1, 83% spent between $200 and $2,000 ha−1 yr−1 for weed control, and 42% thought weed control costs would decrease by 5 years from this study. Twenty-eight species were mentioned by the respondents as being the most serious. According to canonical correspondence analysis, latitude, altitude, being self-employed or a member of a cooperative, having training experience in tea-garden weed management, and frequency and cost of weed control in tea gardens had significant (P < 0.05) influence on the composition of most troublesome weed species listed by respondents. Among the respondents, 60% had had farmer’s training on weed management in tea gardens. Of these, a significant number (P < 0.05) tended to think weed control costs would decrease, and a nonsignificant number (P > 0.05) tended to conduct weed control more frequently and have lower weed management costs in their tea gardens.

Flooding to manage dodder (Cuscuta gronovii) and broad-leaved weed species in cranberry: An innovative use of a traditional strategy

2010 ◽  
Vol 25 (4) ◽  
pp. 257-262 ◽  
Author(s):  
Hilary A. Sandler ◽  
Joanne Mason
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Management Plan ◽  
Cultural Practice ◽  
Weed Species ◽  
Short Term ◽  
Poison Ivy ◽  
Flood Period ◽  
Summer Flood ◽  
Flooding Events

AbstractThe implementation of new uses for traditional cultural and pest management practices has been prompted by renewed interest in sustainable approaches for farming. The use of floods (for various durations) has been an inexpensive and historical cultural practice in cranberry (Vaccinium macrocarponAit.) horticulture. The onset of a serious economic crisis in the cranberry industry in 1999–2000 brought about an urgent need to find inexpensive methods of pest control that would allow growers to remain fiscally solvent. Initially, anecdotal evidence from several farms indicated that holding short-term spring floods suppressed dodder infestations. Based on these findings, a 2-year demonstration-style project was initiated in 2002 to determine the efficacy of short-term floods (24–48 h) for the management of dodder in cranberry in Massachusetts. The project was expanded to include evaluating a 10-day summer flood for control of broad-leaved weed species at one commercial cranberry farm. Species richness and diversity and percentage weed coverage were lower after the implementation of the 10-day flood period compared to pre-flood assessments. Weed species dead or not detected after the 10-day flood included ground nut, asters, narrow-leaved goldenrod, chokeberry and poison ivy. Comparison of paired sites (flooded and nonflooded bogs) indicated dodder stem dry weights were lower on flooded areas in three out of the seven locations in year 1. At two additional locations, the flooded bog had higher stem weights when paired with a historically low-infestation bog, which may have masked any dodder reduction from the flooding practice. In year 2, no differences in the number of germinated seedlings between any treatment pairs were noted. Data from a cranberry company representing 12% of the cranberry acreage in Massachusetts indicated a 65–89% reduction in pesticide use when short-term spring floods were implemented during 2001–2003 compared to the previous 3-year period. Short-term flooding may offer a sustainable option that can be integrated into the overall management plan for several problematic cranberry weed species, especially dodder. Additional research is warranted to further define the most effective environmental conditions needed and to validate the efficacy of short flooding events for effective cranberry weed management.

Effects of Initial Seed-Bank Density on Weed Seedling Emergence during the Transition to an Organic Feed-Grain Crop Rotation

Weed Science ◽  
2009 ◽  
Vol 57 (5) ◽  
pp. 533-540 ◽  
Author(s):  
Richard G. Smith ◽  
Randa Jabbour ◽  
Andrew G. Hulting ◽  
Mary E. Barbercheck ◽  
David A. Mortensen
Keyword(s):  
Seed Bank ◽  
Weed Management ◽  
Cover Crop ◽  
Management Practices ◽  
Transition Period ◽  
Red Clover ◽  
Weed Seed ◽  
Weed Species ◽  
Organic Certification ◽  
Weed Seeds

The transition period to certified organic production can present a significant weed management challenge for growers. Organic certification requires that prohibited fertilizers and pesticides must not have been used for 36 mo before harvest of the first organic crop. Understanding how organic management practices and initial weed seed-bank densities affect weed population dynamics during the transition period may improve weed management efficacy and adoption of organic practices. We examined how tillage systems (full or reduced) and cover crop species planted during the first transition year (rye or a mixture of timothy and red clover) affect the seedling densities of three common annual weed species, common lambsquarters, velvetleaf, and foxtail spp., during the 3-yr transition period. Weed seeds were applied in a one-time pulse at the beginning of the study at three densities, low, medium, and high (60, 460, and 2,100 seeds m−2, respectively), and cumulative seedling densities of each species were assessed annually. Treatment factors had variable and species-specific effects on weed seedling densities. In general, the full-tillage system, with an initial cover crop of timothy and red clover, resulted in the lowest density of weed seedlings following seed-bank augmentation. There was little consistent association between the initial densities of applied weed seeds in the weed seed bank at the start of the transition and weed seedling densities at the end of the transition period. This suggests that when multiple crop and weed cultural management practices are employed during the organic transition period, initial failures in weed management may not necessarily lead to persistent and intractable annual weed species management problems following organic certification.

scholarly journals Studies on weed cover and diversity in coriander (Coriandrum sativum L.) as influenced by weed management and balanced fertilization techniques

2017 ◽  
Vol 5 (3) ◽  
pp. 387-395
Author(s):  
Raj Kumar Nagar ◽  
Dinesh Kumar Jain
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Cyperus Rotundus ◽  
Weed Species ◽  
Significant Interaction Effect ◽  
Weed Density ◽  
Chenopodium Murale ◽  
Balanced Fertilization ◽  
Biological Yield ◽  
Hand Weeding

A field experiment was conducted to analyze the types of flora, intensity, cover and effects on yields of coriander. Pooled analysis of data indicated that Goose foot (Chenopodium murale L.), Corn spurry (Spergula arvensis L.) among dicots and Purple nutsedge (Cyperus rotundus L.) among monocots were found most dominant weeds at all stages of crop growth. Of the total eight weed species reported dicot weeds were found most dominating weed species and comprises 78-80 percent of total weed density throughout crop cycle. All weed management practices significantly reduced the density of monocot and dicot weeds and improved the yield (seed and biological yield) of crop as compared to control. Two hand weeding at 30 and 45 DAS resulted in maximum reduction in total weed density and gave the highest seed (15.84 q/ha) and biological yield (41.11 q/ha) of coriander. However, seed and biological yields was obtained at par by pendimethalin 1.0 kg/ha + one hand weeding at 45 DAS. This treatment also resulted in favorably lowest weed competition index as compared to rest of other practices. Balanced fertilization with N+P+K+S also improved monocot and dicot weed density but the effect was not significant over N+P and N+P+K fertilization. N+P+K+S fertilization significantly enhanced crop seed and biological yields over N+P (1.86 q/ha and 4.36 q/ha, respectively) and N+P+K application (0.94 q/ha and 2.20 q/ha, respectively). Weed management and balanced fertilization practices also found to have significant interaction effect on seed and biological yield of coriander.

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