Anderson Marques

• Professor
• Laboratory of plant physiology at Federal University of Santa Maria

Soil erosion is one of the main causes of land degradation and a threat to global ecosystem conservation. Herbaceous species, such as native species, can be used for surface protection, soil aggregation, and nutrient cycling. However, it is necessary to know the functional traits above and below ground, and how soil attributes and climatic variable...

Kinetic parameters such as Vmax, Km, Cmin and Influx are used to determine nutrient uptake efficiency in plants grown worldwide. Software used to calculate nutrient uptake kinetic parameters in plants remain scarce. The current study proposes a new software with modern functions based on a more accurate kinetic and mathematical model. The aim of th...

Agricultural practices, like fungicides applications and organic/mineral fertilization, as well as industrial mining activities, can be responsible for the increase in the levels of heavy metals in soil. When there is excessive in soil matrix and/or soil solution, these metals can stress the short-cycle plant species producing grains or vegetables,...

Vineyard soils can be contaminated by copper (Cu) due to successive applications of fungicides and organic fertilizers. Soil remediation can be addressed by altering soil properties or selecting efficient Cu‐extracting cover crops tolerant to Cu toxicity. Our objectives were to synthesize the Cu‐extracting efficiency by plant species tested in Braz...

Frequent applications of foliar fungicides on grapevines increase copper (Cu) levels in soils, which may cause toxicity to young grapevines transplanted to eradicated old vineyards, especially because they are more sensitive. Therefore, it is necessary to adopt strategies to mitigate Cu toxic effects, such as grapevine seedlings inoculation with ar...

Soil contamination by Copper (Cu) in vineyards grown in Pampa biome can change the growth and development of native and invasive herbaceous plants who cohabit these sites. The way these features change determines plants' tolerance to Cu contamination and it can assure greater competitive advantage and favor plant establishment in vineyards. The aim...

Orchards and vineyards account for significant copper (Cu) accumulation in the soil due to frequent Cu fungicide applications to control leaf diseases. Although grass species are distributed in these areas likely because of their physiological mechanisms to combat Cu toxicity-related stress, the aim of the present study is to identify grass species...

High acidity and low soil P availability in the soils from the Pampa natural grasslands generally limit the forage growth and economic return. Thus, to increase the economic return and avoid environmental degradation and biodiversity loss due to replacement by intensive cropping systems, it is essential to improve the soil P availability. This stud...

One of the main concerns for the establishment of sustainable agriculture is the development of cultivars that absorb and use phosphorus (P) better. It is possible to produce quality seed potatoes from sprouts, microtubers, minitubers and minicuttings in closed off-soil growing systems. However, little is known if the origin of the propagating mate...

The excess of zinc (Zn) in vineyard soils promotes grape yield restraints. Thus, it is urgent to set up sustainable strategies aiming at decrease phytotoxic potential of Zn for crops. The selection on biochemical and physiological bases of wild plants to intercrop with perennial ones might be the key step to identify and characterize unknown mechan...

This study quantified K uptake kinetic parameters in grass species Paspalum notatum, Paspalum urvillei and Axonopus affinis to associate them with growth. Ten milliliters (10 ml) of nutrient solution were collected in two-liter pots - with five repetitions in 24 hours - in order to determine K concentrations in the samples. Shoot and root dry matte...

Copper (Cu) contents in vineyard soils due to the application of cupric fungicides cause changes in the native covering flora. Under these conditions, the surviving individuals accumulate the metal in and decrease its availability in the soil, reducing the potential toxicity to grapevine. We have identified spontaneous plant species and their phyto...

To develop agricultural systems that produce more food with limited availability of phosphorus (P) it is necessary to explore the genetic variability of plants and select potato clones that are more efficient at P use. The objective of this study was to evaluate the performance of four potato clones for P nutritional efficiency in closed off-soil g...

Phosphorus fertilization and liming are alternatives used to increase forage production in Southern Brazil grasslands (Pampa grasslands) and to avoid its replacement by cultivated exotic crops. However, changes in natural soil fertility can significantly affect the equilibrium of natural vegetation communities. We hypothesized that triple and simpl...

Phosphorus uptake by grass species from natural South American grasslands can change depending on root and leaf attributes capable of determining higher, or lower, relative growth rate. The aim of the current study is to investigate whether leaf and root attributes capable of determining leaf and root area production in native C 4 grass species Axo...

The selection of rootstocks presenting traits of interest, such as resistance to pests and diseases, and compatibility with scion capable of producing fruits attractive to the market, has revolutionized fruit crops worldwide. However, the enormous potential of plants to be selected based on their nutrient uptake efficiency is yet to be properly exp...

Grass species native to South American can have mechanisms to tolerate copper (Cu) excess, which improves their use to phytoremediate Cu-contaminated soils . The aims of the present study are to assess the tolerance of grass species native to South American grasslands to copper-contaminated soils, as well as their adaptive responses under high Cu-s...

Successive pig slurry (PS) applications can substantially increase phosphorus (P) movement due to leaching, mainly in sandy soils found in areas presenting high rainfall rates. The aim of the current study was to assess the transference of different P forms through leachate in a soil managed under no-tillage system, in a crop rotation system subjec...

Iron (Fe) toxicity is a problem that affects many rice areas in lowland environments. The aim of this study was to investigate, through photosynthetic and antioxidant responses, the effect of phosphorus (P) nutrition as a mitigator of iron (Fe) toxicity in rice cultivars. The experimental design used was in randomized blocks, with four replications...

Trichoderma is used as crop growth promoters. However, they may have harmful effects at higher concentrations. The objective of this work was to evaluate the vermicompost effect formulated with different concentrations of sandy soil, bioenriched with higher than recommended doses of trichoderma, on the germination, initial development and chemical...

Grass species grown in South American natural grasslands present different growth strategies related to variations in specific leaf area (SLA), leaf dry matter content (LDMC) and possible nitrogen (N) allocation. Nitrogen fertilisation can have effects on physiological processes such as CO2 assimilation; however, these responses can change dependin...

Study’s objective was to evaluate spatial variability of herbaceous cover species community in vineyards cultivated in soil with increasing Cu levels in Pampa biome. Three vineyards, with increasing soil Cu available contents and a natural field area (NF), were selected. In each experimental area, soil Cu content, botanical composition, cumulative...

Nitrogen (N) is a key nutrient for rice (Oryza sativa L.) and its availability in soil profile can influence the plant root morphology and total nutrient uptake. This study evaluated if N from deeper soil layers would increase rice root growth, N uptake and influence plant nutritional status. Flooded rice was grown in undisturbed soil samples from...

South American natural grasslands are composed of several species with different growth strategies, with variations in specific leaf area (SLA), leaf dry matter content (LDMC), specific root length (SRL) and specific root area (SRA). The objective of this study was characterizing in grasses cultivated with different levels of phosphorus (P) in the...

The great majority of sandy soils present low nitrogen availability, generally below vines physiological demand, and therefore nitrogen fertilizer application, such as urea, is necessary. However, when urea is applied on the soil surface, the vine can use only a small amount of N. Thus, management strategies such as fer-tigation can increase N util...

Successive applications of copper fungicides on vines have resulted in increased copper content in vineyard soils over the years. This high copper content has affected the growth of young vines in eradicated vineyards. Thus, the cultivation of annual species for a few years is an alternative to copper phytostabilization, because it would be a good...

The natural grasslands in South America have soils with low phosphorus (P) availability (1.0 to 7.5 mg kg −1), possibly altering the absorption and accumulation of P in grasses. We evaluated the chemical fractionation of P in the leaves of the most important grasses present in these grasslands to better understand the mechanisms involved in the sto...

Peach (Prunus persica L.) rootstock cultivars are typically selected for scion compatibility, ease of propagation, vigor, development, flowering season, yield, low need for cold temperatures, resistance to diseases, effects on the physical-chemical characteristics of the fruit, plant longevity and adaptation to adverse edaphoclimatic conditions. Ho...

Different growth rates of grasses from South American natural grasslands are adaptations to soils of low fertility. Grasses with fast growth rate are species with an accumulation of nutrients in soluble forms, with a high metabolic rate. This work aimed to study whether grasses with different growth rates have different phosphorus (P) uptake and ef...

Different growth rates of grasses from South American natural grasslands are adaptations to soils of low fertility. Grasses with fast growth rate are species with an accumulation of nutrients in soluble forms, with a high metabolic rate. This work aimed to study whether grasses with different growth rates have different phosphorus (P) uptake and ef...

A absorção de um nutriente pode ser descrita por dois parâmetros, a taxa de influxo máxima (Imax) e a constante de afinidade dos transportadores (Km). De maneira geral, espécies com maior TCR apresentam alto Imax, são espécies que apresentam capacidade de obter P mesmo em concentrações mínimas (Cmin) no solo. Com isso, a determinação das caracterís...

Most of natural grasslands of Southern Brazil have low availability of soil phosphorus (P), and under such conditions, the association with arbuscular mycorrhizae is an adaptation to the nutrient supply. However, one of the alternatives to improve the productivity of these grasslands is P fertilization, which can alter mycorrhizal colonization. Thi...

A hydroponic experiment was carried out to investigate the effect of phosphorus (P) nutrition on arsenic (As) uptake and translocation within the seedlings of rice cultivars. The experiment occurred in three stages: I 5 days of acclimatization (nutritive solution); II 10 days under P (0.0 and 0.09 mM) and As (0.0 and 100 mM) treatments; III 5 days...

In South American natural grasslands coexist species of C 4 grasses with a higher growth strategies and species with low growth strategies. Biological nitrogen fixation (BNF) is very important for these grasses because the soil is nutrient poor. The understanding of this process may help explain the vegetation dynamics and improve the management of...

The aim of this thesis is to evaluate different species of native grasses from southern Brazil grasslands of contrasting in its specific leaf area (SLA) and leaf dry matter content (LDMC) traits, if species of higher SLA have greater assimilation of CO2, as well, its relation with leaf nitrogen (N) under natural fertility conditions and with N fert...

Revista Brasileira de Agroecologia Rev. Bras. de Agroecologia. 11 (3): 1 88-1 95 (201 6) I I S SS SN N: : 1 980-9735 Dejeto de leiteria como alternativa para a adubação do consórcio aveia preta e azevém e seus efeitos na produção e qualidade bromatológica da forragem Dairy waste product as alternative fertilizer for the consortium between black oat...

O cultivo de plantas para cobertura de solo é um dos principais fatores de sucesso no sistema de plantio direto, entretanto, existem poucos estudos relacionados à fertilização das espécies cultivadas para esse fim. Objetivou-se com este trabalho avaliar a influência da adubação com dejeto de bovinos leiteiros e fertilização mineral no consórcio de...

Fertilization can affect vegetation dynamics and natural grassland diversity. This study evaluated the vegetation dynamics of a natural grassland 16 years after the initial fertilization, discussing the long-term effects of addition of triple superphosphate (TP) or Gafsa rock phosphate (RP) sources, as well as the effect of exotic species introduct...

Maximizing the efficiency of existing production systems and reducing the intake of external inputs and production costs is the principle of modern farming and livestock production. In this context, the aim of this study was to evaluate the influence of organic and mineral fertilization on dry mass (DM) development and production of the consortium...

O objetivo foi avaliar a influência de diferentes fontes de fósforo na área foliar total e na área foliar específica de gramíneas nativas de uma pastagem natural do Bioma Pampa. Foram selecionadas as espécies que mais contribuíam com a massa de forragem total da área experimental, sendo elas: Dichanthelium sabulorum, Eustachys uliginosa, Paspalum n...

RESUMO Este estudo teve como objetivo avaliar o efeito do dejeto bovino como forma de adubação em plantas de azevém sob regime de cortes, e sua influência sobre a qualidade e produção de sementes. O experimento foi conduzido na Área Experimental da Universidade Federal do Pampa, Campus Itaqui, utilizou-se o delineamento experimental de blocos ao ac...

Qualidade fisiológica de sementes de azevém de duplo propósito submetido à adubação orgânica e manejo de cortes Physiological quality of ryegrass seeds submitted to dual purpose organic fertilizer and cuts management RESUMO Este trabalho objetivou determinar os efeitos das adubações mineral e orgânica sob condições de cortes na qualidade fisiológic...