Article
Agronomy
Maria Belen D'Amico, Guillermo R. Chantre, Guillermo L. Calandrini, Jose L. Gonzalez-Andujar
Summary: Population models are essential for understanding long-term changes in weed dynamics with integrated weed management strategies. The importance of achieving high control efficiencies in controlling herbicide-resistant weeds and the impact of increased barley sowing densities on weed control were highlighted. Non-herbicide methods were found to be ineffective, and a combination of control tactics is necessary for weed eradication, with the effectiveness of increased sowing density diluted as weed control becomes more demanding. Future research should focus on the effects of weed resistance levels on population dynamics and efficiencies in sustainable IWM programs.
Article
Genetics & Heredity
Jefferson Paril, Gunjan Pandey, Emma M. Barnett, Rahul V. Rane, Leon Court, Thomas Walsh, Alexandre Fournier-Level
Summary: The genome of the major agricultural weed species, annual ryegrass (Lolium rigidum), was assembled, annotated and analyzed. The study revealed the remarkable capacity of this weed to evolve resistance to herbicides with various modes of action. The researchers achieved a chromosome-level assembly using advanced sequencing techniques and also found evidence for the expansion of herbicide resistance-related gene families. This research provides important genetic information for the management of this problematic weed species.
FRONTIERS IN GENETICS
(2022)
Article
Agronomy
John W. Piltz, Stephen G. Morris, Leslie A. Weston
Summary: The best approach for controlling barley grass, annual ryegrass, and wild radish was found to be late paddock preparation, early October forage harvest, and effective regrowth control in a single year.
Review
Plant Sciences
Ali Ahsan Bajwa, Sajid Latif, Catherine Borger, Nadeem Iqbal, Md Asaduzzaman, Hanwen Wu, Michael Walsh
Summary: Annual ryegrass has become the most problematic weed in Australian grain production regions, causing significant revenue losses for grain growers. Integrated weed management programs are widely practiced to control the weed due to its genetic diversity and herbicide resistance. A comprehensive review of the biology and management of annual ryegrass in conservation cropping systems is needed for further research and suitable management strategies.
Article
Agronomy
Fortunato de Bortoli Pagnoncelli Junior, Michelangelo Muzell Trezzi, Helis Marina Salomao, Katia Cristina Hartmann, Jose Luis Gonzalez-Andujar
Summary: This study developed and validated an empirical emergence model of Italian ryegrass based on soil thermal time, with the Gompertz model showing the best performance. The model predicted Italian ryegrass emergence start, 50% emergence, and 90% emergence time. Validation results demonstrated the model's good performance in predicting Italian ryegrass emergence.
ACTA SCIENTIARUM-AGRONOMY
(2021)
Article
Geosciences, Multidisciplinary
Yuan Gao, Lili Yao, Ni-Bin Chang, Dingbao Wang
Summary: The study developed a water balance model to estimate mean annual runoff in ungauged basins considering the uncertainty in soil water storage capacity distribution, capturing 88.2% of actual runoff on average. However, underestimation of mean annual runoff was mainly attributed to neglecting the effect of land surface and bedrock topography on low soil water storage capacity estimation.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2021)
Article
Agronomy
Valentina Sostarcic, Roberta Masin, Donato Loddo, Ema Brijacak, Maja Scepanovic
Summary: The study estimated the base temperature and base water potential for four weed species collected from continental Croatia and compared these values with Italian populations. Only the base temperature of Chenopodium album and the base water potential of Amaranthus retroflexus were found to be similar between the two populations. Further field experiments are needed to validate these results.
Article
Engineering, Civil
Ilaria Clemenzi, Eleanor Quinlan, Valentin Mansanarez, Peter Jansson, Jerker Jarsjo, Stefano Manzoni
Summary: Quantifying the components of the hydrological cycle in glacierised catchments is crucial for assessing water resources availability downstream. However, long time series of observations are often unavailable for remote catchments. In this study, a 40-year time series of hydrological data from the Tarfala catchment in Sweden was used to analyze temporal trends in water balance components. The study found increases in evaporation and summer discharge, attributed in part to glacier volume losses. The water balance could not be perfectly closed, with water losses exceeding water inputs by an average of 112 mm per year.
JOURNAL OF HYDROLOGY
(2023)
Article
Agronomy
Michael Thompson, Bhagirath Singh Chauhan
Summary: This article discusses the growth of Lolium rigidum in both winter and summer in Australia, suggesting that the potential cause of its expansion during summer may be related to a change in dormancy duration. However, dormancy alone cannot fully explain the presence of this weed in summer crops, suggesting that there may be additional changes in growth and development that allow for the adaptation and infestation of L. rigidum in summer conditions.
FRONTIERS IN AGRONOMY
(2022)
Article
Multidisciplinary Sciences
Lianman Xu, Linlin Du, Yajing Li, Weizhe Li, Hasa Wu
Summary: Irrigation with mine water can affect the physiological and photosynthetic characteristics of ryegrass, as well as soil properties. A mixture of clean water and mine water at a ratio of 2:1 had the most stimulatory effect on plant growth.
SCIENTIFIC REPORTS
(2022)
Article
Agronomy
Afonso Henrique Schaeffer, Diogenes Cecchin Silveira, Otavio Augusto Schaeffer, Nadia Canali Langaro, Leandro Vargas
Summary: The study compared the dynamics of the soil seed bank of glyphosate-resistant and glyphosate-susceptible biotypes of ryegrass under a no-tillage system. The results showed that the percentage of dormant seeds in the ryegrass seed bank of both biotypes decreased to 11% and 15% at the end of 12 months. However, there was no variation in germination, dormancy, and seed mortality between susceptible and glyphosate-resistant ryegrass. Seeds of both biotypes exhibited similar dynamics in the soil over a period of 12 months.
WEED BIOLOGY AND MANAGEMENT
(2021)
Article
Agronomy
John C. C. Broster, Allison J. J. Chambers, Leslie A. A. Weston, Michael J. J. Walsh
Summary: The study examined the relationships between weed and crop species in Australian farming systems through surveys of randomly selected fields. It found that annual ryegrass, wild oats, and sowthistle were the most common weed species in NSW cropping fields, with varying distribution patterns between regions. Changes in weed species occurrence were attributed to alterations in crop production practices.
Article
Soil Science
Jane M. F. Johnson, Drew Scott, Sharon Weyers
Summary: Fall-planted cover crops are used to scavenge residual reactive N. The study showed that corn yield was affected by planting cover crops, with radish resulting in slightly higher yield and annual ryegrass lower yield compared to no cover crop. While cover crops can scavenge residual N, they did not support the hypothesis that corn yield could be maintained with less N fertilizer compared to no cover crop.
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
(2021)
Article
Biodiversity Conservation
Dennis Baldocchi, Siyan Ma, Joe Verfaillie
Summary: The study found that the annual evapotranspiration of native ecosystems did not show a clear increasing or decreasing trend over time as CO2 concentrations rose, the climate warmed, and rainfall experienced booms and busts. Plants transmit information on soil moisture status through their influence on the vapor pressure deficit of the atmospheric boundary layer, and access to groundwater by oak savannas may make these ecosystems more robust in a warmer world than previously thought.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Environmental Sciences
Shi-Wei Liu, Xiaoming Wang, Lu Zhang, Wei-Ming Kong, Hong-Kai Gao, Cun-De Xiao
Summary: The study investigates the effects of glaciers on runoff in 25 upstream catchments of the Tarim River Basin in western China. The findings show that considering glacier mass balance and glacier fraction improves the performance of the Budyko framework, especially for catchments with a high glacier fraction.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2022)
Article
Entomology
Gabriel Picapietra, Jose L. Gonzalez-Andujar, Horacio A. Acciaresi
Summary: A predictive seedling emergence model based on thermal time was developed and validated for Junglerice, an important annual weed affecting crops in Argentina. The study found that the variations in mean air temperature between late August and early September have a close linear relationship with the beginning of seedling emergence, with a double-logistic model fitting Junglerice seedling emergence better than other functions. Model validation showed high performance in predicting seedling emergence, indicating the potential to contribute to rational weed management.
INTERNATIONAL JOURNAL OF PEST MANAGEMENT
(2021)
Article
Agronomy
Jane Morrison, Jordi Izquierdo, Eva Hernandez Plaza, Jose L. Gonzalez-Andujar
Summary: Global concerns about the decline in pollinators have highlighted the importance of understanding factors influencing wild pollinator abundance in agroecosystems. Agricultural intensification is the main cause of the crisis, leading to reductions in natural areas with floral and nesting resources. This study in a Mediterranean agroecosystem found that native wild weeds like Daucus carota, Papaver rhoeas, and Malva sylvestris are most likely to positively contribute to pollinator conservation due to their attractiveness and low risk for invasiveness. In addition, planting wild flowers in clumps rather than intermingled could improve visitation rates of pollinators.
Article
Agronomy
Maria Belen D'Amico, Guillermo R. Chantre, Guillermo L. Calandrini, Jose L. Gonzalez-Andujar
Summary: Population models are essential for understanding long-term changes in weed dynamics with integrated weed management strategies. The importance of achieving high control efficiencies in controlling herbicide-resistant weeds and the impact of increased barley sowing densities on weed control were highlighted. Non-herbicide methods were found to be ineffective, and a combination of control tactics is necessary for weed eradication, with the effectiveness of increased sowing density diluted as weed control becomes more demanding. Future research should focus on the effects of weed resistance levels on population dynamics and efficiencies in sustainable IWM programs.
Article
Plant Sciences
Hassan Karimmojeni, Hamid Rahimian, Hassan Alizadeh, Ali Reza Yousefi, Jose L. Gonzalez-Andujar, Eileen Mac Sweeney, Andrea Mastinu
Summary: The study explored the physical properties of maize seeds in competition with weeds, finding that weed competition significantly affected the geometric characteristics of maize seeds. Weed density had a notable impact on key parameters such as angle of repose, seed weight, and seed dimensions. These findings highlight the importance of considering weed competition effects in industrial equipment design for seed processing.
Article
Agronomy
Fernando Bastida, Julio Menendez, Daniel Camacho, Jose L. Gonzalez-Andujar
Summary: The demography of weeds with wind-mediated long distance seed movement can be influenced by extra-field seed-source populations, with the spatial distribution of seeds being significantly affected by wind patterns. The study also found that seed dispersal distances vary based on wind direction and time, highlighting the importance of understanding temporal and spatial patterns for effective management.
Article
Plant Sciences
Fatemeh Benakashani, Jose L. Gonzalez-Andujar, Elias Soltani
Summary: This study evaluated the molecular basis of resistance to an ACCase herbicide in four Avena ludoviciana biotypes, finding that certain biotypes exhibited very high resistance due to a specific amino acid substitution. Resistant biotypes required more soil water for germination and had slower germination rates compared to susceptible biotypes. Additionally, biotypes with the Isoleucine-1781-Leucine mutation had lower seed weight but utilized more seed reserve to produce seedlings.
Article
Agronomy
Jordi Izquierdo, Clara Prats, Montserrat Gallart, Daniel Lopez
Summary: Models based on thermal or hydrothermal time are used to predict the seedling emergence pattern of weeds. These models give good predictions at local and regional scales but lose accuracy when extrapolated to different geographic areas. The use of the differential form of the function could improve the accuracy of emergence predictions and be particularly useful in selecting control measures.
Article
Agronomy
Eva Hernandez Plaza, Fernando Bastida, David J. Gibson, Francisco Barro, Maria J. Gimenez, Yesica Pallavicini, Jordi Izquierdo, Jose L. Gonzalez-Andujar
Summary: The structure of weed communities, including their composition, taxonomic diversity, and functional diversity, can explain the variability in crop quality. In this study, weed communities in 26 Spanish wheat fields managed either organically or conventionally were analyzed. The relationship between crop quality and weed community variables was examined, taking into account environmental factors. It was found that nitrogen fertilization, previous crop, and precipitation had significant effects on wheat grain protein concentration and composition. The impact of weed communities on grain quality was limited, with only a small increase in the model's explanatory power. Understanding the mechanisms behind weed effects on crop quality can help in designing sustainable weed management practices.
Article
Multidisciplinary Sciences
Fatemeh Mohammadkhani, Majid Pouryousef, Ali Reza Yousefi, Jose L. Gonzalez-Andujar
Summary: This study evaluated the impact of the saffron-chickpea intercropping system on weed density, biomass, and diversity under two irrigation regimes. The results indicated that one-time irrigation and a 1:1 or 2:2 intercropping ratio can effectively manage weeds.
Review
Multidisciplinary Sciences
Javier Lopez-Tirado, Jose L. Gonzalez-Andujar
Summary: Climate change is a global concern with severe consequences, prompting the need for continuous investigation of agriculture to improve its efficiency. Weeds have played a crucial role in this regard, especially with the increase in tourism and international trade. Species distribution models (SDMs) have been used to study the relationship between weeds and climate change. A review of articles published since 2017 found that the most studied species, scale and location of studies, algorithms used, validation parameters, global change scenarios, variables, and data sources varied. The imbalance between developed and developing countries in terms of published articles highlights the need for more research, particularly in densely populated developing countries.
Article
Agronomy
Kambiz Mootab Laleh, Majid Ghorbani Javid, Iraj Alahdadi, Elias Soltani, Saeid Soufizadeh, Jose Luis Gonzalez-Andujar
Summary: Diminishing yield gaps is a crucial issue in developing nations. This study evaluated the yield gap of wheat fields using comparative performance analysis techniques and identified contributing factors and potential yield. The results showed a yield gap of 3748 kg/ha, which accounted for 40.23% of the potential yield. Factors such as leaf chlorophyll, irrigation, and soil salinity contributed to the yield gap. Therefore, developing nations can effectively utilize these techniques to increase crop production.
Article
Agronomy
Jose L. Gonzalez-Andujar, Maria J. Aguilera, Rene Van Acker
Summary: This study presents a new methodology for determining the relative competitiveness of weed species based on population dynamics theory. The results showed that different weeds have different competitive abilities on different crops, with weaker interspecific competition and stronger intraspecific competition.
Editorial Material
Agronomy
Jose L. Gonzalez-Andujar
Article
Agriculture, Multidisciplinary
Fernando Bastida, Juan A. Lezaun, Jose L. Gonzalez-Andujar
Summary: The study developed a predictive model for the emergence pattern of Phalaris brachystachys in wheat fields under different climate conditions, successfully predicting seedling emergence in commercial wheat fields with high accuracy (R-2 ≥ 0.92). This model can be a valuable tool for improving control measures and reducing infestations of this weed in cereal crops.
SPANISH JOURNAL OF AGRICULTURAL RESEARCH
(2021)
