The association of agricultural chemicals complies with many objectives, such as the simultaneous control of organisms, dosage reduction, increase in the efficacy and prevention of cases of resilience to pesticides. The current paper aims to summarize information on the association of glyphosate with nutrients, herbicides and other pesticides. The association of glyphosate with polyvalent cations (e.g.: Ca and Mn), in general, reduces the efficacy of the herbicide, which can be overcome with the addition of ammonium sulfate to the application […]

The aim of the present text is to recall basic concepts about evolution, neo‑darwinism and mechanisms of plant selection, pooling this knowledge into the weed science as a background which paves the way for the appearance of weed biotypes resistant to herbicides. Some questions which need to be answered regarding current concepts in weed resistance are risen. Epigenetics, secondary metabolism and environment related studies may change our view into plant resistance to herbicides.

Weeds compete for different resources with crops and the management of these plants is necessary so that production losses can be minimized. On the other hand, the diversity of plant species which behave as weeds can positively contribute to the survival of many arthropods and natural enemies. The objective of this review was to systematize the scientific evidence on the impacts of control of weeds and herbicides applied to non-target insects such as predators and parasitoids of pests, which are […]

Herbicide-resistant populations of the species A. palmeri were detected in Brazilian crops in 2014. Plants from this species were never identified in Brazil before. In other places of the world, A. palmeri causes many crop losses due to its biological characteristics and its competitivity in agricultural systems. Furthermore, herbicide-resistant populations become an important management issue, especially in the case of multiple herbicide resistance. This literature review describes the biological characteristics of this species in order to understand its adaptation and […]

Rottboellia cochinchinensis (Lour.) Clayton, popularly known as itchgrass is the main weed of at least 18 crops grown in many countries. Therefore, it is proposed, in this review, to present biological and management aspects of this important weed species. It is an annual or perennial plant reproduced by seeds or from pieces of stems, reaching up to 4.0 m high. The seeds can remain dormant in the soil for up to four years and the light is not a limiting […]

The residual effect of herbicides in the soil on sensitive succeeding crops is known as carryover. Most studies on carryover in vegetable crops have been developed in other countries; however, the problems arising from this phenomenon are also a reality in Brazil. The limited information in the literature, together with the absence of alerts and periods of restriction in the instructions for use of herbicides sold in the country for sensitive vegetables grown in succession contribute to the occurrence of […]

At present, reducing the use of pesticides is sought out, for besides the environmental damage caused by them, there is concern about the consumption of food contaminated with possible residues. This literature review aims to address the use of bioherbicides, besides evaluating their prospects and potential to manage weeds infesting agricultural and nonagricultural environments. There is a growing need to find new molecules or methods able to control weeds found in agricultural and nonagricultural areas. Thus, bioherbicides have aroused the […]

The introduction of new cultivation technologies for soybean, corn and cotton contributed to a significant increase in the productivity of these crops. A highlight among these technological advances is the resistance of these crops to glyphosate, which initially provided for better weed control, especially in areas with a great diversity of species. Additionally, from a practical point of view it can also be highlighted that the increased time span for weed control, looking at the possibility of applying glyphosate at […]

The severity of diseases in plants can be affected by practices such as the application of herbicides for the control of weeds. Therefore, we aimed to present and discuss the relationship between the use of herbicides and the severity of diseases of cultivated plants. After contact, the pathogens try to infect and colonize the hosts, which, in turn, use mechanisms to defend themselves from infection. The trichomes, the cuticles and the epicuticular wax are barriers against penetration. Phenolic compounds, enzymes […]

Non-target-site resistance (NTSR) to herbicides mainly caused by enhanced degradation is highly problematic due to the occurrence of biotypes with multiple resistance and is a new challenge for weed management and herbicide use. Recently, enzymes associated with xenobiotic degradation especially cytochrome P450, GSTs and ABC transporters have been associated with the herbicide resistance in several weeds. This knowledge opens a new window to understand the evolution of NTSR. The aims of this review are to discuss the current knowledge of […]