Abstract Grazing management is an important component affecting pasture stability, but the underlying demographic mechanisms remain poorly understood in mixed-species systems. This three-year study investigated how grazing height (15 cm and 20 pre-grazing) strategic spring defoliation (7 cm) influence stability mixed pastures composed of complementary C 3 /C 4 grasses ( Lolium arundinaceum Cenchrus clandestinus ). Utilizing tiller size/density relationship theories, we examined population...

Most herbicides applied in crop field, stay the soil for a period, affecting next or even plants using as green manure. Nowadays, use of grow to increase productivity, mainly grain producing region north Rio Grande do Sul state. The objective this study was evaluate effects fomesafen and sulfentrazone on antioxidant system Avena sativa1, Vicia sativa2, Raphanus sativus Lupinus albus. were exposed varying concentrations fomesafen3 (0, 0.125, 0.25 0.5 kg ha -1) 0.3, 0.6 1.2 ha-1). For this,...

ABSTRACTThe objective of the study was to assess relative competitive ability canola hybrids in presence turnip (Raphanus sativus) and ryegrass (Lolium multiflorum) different ratios plants mixture. The experiments were conducted a greenhouse, completely randomized design with four replications. Treatments arranged against or ryegrass: 100:0, 75:25, 50:50, 25:75 0:100. Competitive analysis species accomplished by means diagrams usually applied replacement series also competitiveness indices....

The objective of this work was to evaluate the effectiveness, selectivity and effect on yield components RR® maize as a function herbicide application, applied alone or in tank mix. experiment conducted randomized block design, with four replications, treatments were control without weeding, glyphosate, glyphosate + [atrazine+simazine], [atrazine simazine], tembotrione, glyphosate+mesotrione, T8-glyphosate nicosulfuron, 2,4-D, S-metolachlor], T11-glyphosate (atrazine S-metolachlor),...

The crop yield is related to several factors, among these, soil tillage, compaction and rotation. This study aimed evaluate the winter cover crops rotation influence on physical properties grain of dry beans, maize soybean for two growing seasons. Three experiments were conducted, corresponding crops. It was used randomized block design with three treatments four replications consisted by 3 × 10 m plots. were: systems in no-till, control, consisting fallow conventional tillage. matter,...

Para contornar os casos de plantas daninhas resistentes ao glyphosate torna-se necessário o uso herbicidas com outros mecanizamos ação. Objetivou-se trabalho avaliar a eficácia e seletividade aplicados isolados ou em mistura tanque para manejo infestante da soja resistente glyphosate. Os tratamentos foram forma sequencial, pré-emergência: clomazone (900 g ha-1 i.a.); flumioxazin (50 diclosulam (35,02 s-metolachlor (1152 sulfometuron + chlorimuron-ethyl (18,75 18,75 pendimethalin (1250...

ABSTRACT The effects of different management strategies on improving growth and modifying the botanical composition C 3 4 perennial grasses grown in a mixed canopy are underexplored. We aimed to evaluate vegetation dynamics containing kikuyugrass ( Pennisetum clandestinum Hochst. Ex Chiov) tall fescue Festuca arundinacea Schreber cv. Rizomat) subjected four grazing over 22 mo. experimental design was randomized complete block factorial arrangement (two maintenance heights: grazed 7 cm...

ABSTRACT Identifying the competitive ability of corn hybrids and economic injury level (EIL) caused by Urochloa plantaginea is important for adoption integrated management this weed. This work aims to evaluate interference EIL U. infesting hybrids. Treatments included Syngenta Status VIP3, SX8394 Pioneer P1630H, 30F53 YH, Dow 135021, as well 12 densities each hybrid. We used a rectangular hyperbolic model describe relationship between grain productivity loss explanatory variables — plant...

Abstract A less‐explored alternative to animal production in the subtropics is a mixture of perennial cool‐ and warm‐season forage grasses. This study aimed determine grazing management strategy enhance attenuate seasonality mixed pasture composed kikuyugrass ( Pennisetum clandestinum ) tall fescue Festuca arundinacea ). Four treatments were implemented completely randomized block design using factorial scheme (2 × 2) with three replicates. The arrangement consisted two canopy heights (12 17...

ABSTRACT Among the weeds that cause interference with growth and development of barley turnip stands out, especially by high competitive ability for resources available in environment. The research objective study was to evaluate cultivars live a biotype. Experiments were installed greenhouse, experimental outlining randomized blocks designed four repetitions. treatments arranged replacement series, consisting proportions plants turnip: 100: 0, 75:25, 50:50, 25:75 0: 100% which equivalent...

O emprego de espécies vegetais para fitorremediação solos contaminados com herbicidas persistentes, como os inibidores da enzima protoporfirinogênio oxidase (PROTOX), é uma alternativa interessante dos pontos vista econômico e ambiental. objetivo deste trabalho foi avaliar a influência fomesafen sulfentrazone nas características relacionadas à fisiologia hibernais potencial aplicação fitorremediadoras solo contaminado por esses herbicidas. Dois experimentos foram instalados em casa...

ABSTRACT: Phytoremediation comprises one of the main forms decontamination organic and inorganic substances in soil, being economically viable with a low environmental impact. The aim this study was to verify efficiency winter plant species phytoremediation soil contaminated fomesafen sulfentrazone using cucumber as an indicator presence residue. experimental design completely randomized arranged 6 x 4 factorial scheme four replications for each herbicide. Factor A consisted phytoremediator...

In the soybean crop occurs high losses of grains production, in function weeds.It is noteworthy that among most damaging weeds alexander grass (Urochloa plantaginea).The objective project was to test mathematical models and identify explanatory variables determinate level control estimated cultivars populations competitor.The experiment installed UFFS experimental area Erechim, RS agricultural year 2016/17.The treatments were composed (NS 5445 IPRO, NS 5959 SYN 13561 1059 RR e BMX Elite...

The current work was based on the central hypothesis that grazing management strategies modulate tillering dynamics of mixed canopies composed kikuyu-grass (C4 perennial grass) and tall fescue (C3 grass). Among five conditions evaluated, three (7, 12, 17 cm) represented heights up to which grasses were kept by mimicking a continuous stocking method throughout experimental period (from May 2016 October 2017), other two consisted 12 cm with single 7 in mid-autumn. Nitrogen fertilization...

<title>Abstract</title> Human activities have considerably increased copper (Cu). This study evaluated the potential of phytoextraction in competing and resource-conserving plants. The experiment was carried out a greenhouse with eight tropical forage grasses, at two levels Cu nutrient solution: 0.3 20 µmol L^{− 1}. Variables plant morphogenesis, leaf area measurements, SPAD index, total length, area, volume average diameter roots, specific root density, length were evaluated,...

Abstract In some temperate climate regions, co‐cultivation of warm‐ and cool‐season perennial grass species represents a promising alternative for sustainable food production. However, managing these pastures is challenging, particularly because intra‐annual competition, which can lead to suppressing others. This 3‐year study investigated the effects different defoliation strategies on mixed composed tall fescue ( Schedonorus arundinaceum Schreb; Tf) kikuyugrass Cenchrus clandestinus Hochst....

O feijão do tipo preto é um dos principais grãos cultivados no Brasil, com importância econômica, social e cultural. As perdas de produtividade grãos, por competição as plantas daninhas, em especial Digitaria ciliaris (milhã/capim-colchão) Urochloa plantaginea (capim marmelada/papuã) podem chegar a níveis até 80% caso nem método controle for adotado. Buscando o dessas objetivou-se trabalho avaliar eficácia seletividade herbicidas aplicados pré pós-emergência preto. delineamento experimental...

ABSTRACT: The objective of this work was to evaluate the phytoremediation potential summer-grown species planted in soils contaminated with herbicides fomesafen or sulfentrazone. In a greenhouse, doses (0.0, 0.125, 0.25 and 0.5 kg ha-1) sulfentrazone 0.3, 0.6 1.2 ha-1), were applied pre-emergence brown hemp, millet, velvet bean sorghum. On field, recommended (0.250 (0.600 used sorghum, plus treatment without cultivation. These species, before planting canola (bioindicator species), submitted...

ABSTRACT: The use of plant species for the phytoremediation soils contaminated with herbicides is an alternative that has been emphasized to minimize effects persistence agrochemicals in environment. objective this study was evaluate tolerance potential winter sulfentrazone and fomesafen. experiment a completely randomized design four replications. Doses fomesafen (0.0, 0.125, 0.250, 0.5 kg ha-1) 0.3, 0.6 1.2 were applied during pre-emergence phytoremediate (black oat, vetch, birdsfood...

Zur Steigerung der Abbildungsgenauigkeit Ressourcen eines Fertigungssystems in digitalen Fabrik lassen sich Betriebsdaten heranziehen. Insbesondere Einfluss des Mitarbeiters auf das Erreichen Produktionszielgrößen ist aufgrund seiner Komplexität nicht analytisch vorherzusagen. Im Rahmen dieses Beitrags werden daher eine Methode und deren Anwendung zur Abbildung sowie Herleitung Zusammenhangs zu den anhand von mitarbeiterbezogenen dargestellt. &amp;nbsp; Operating data can be used to increase...