The objective of this work was to evaluate the effects of herbicides applied in post-emergence of Arabic coffee plants inoculated and non-inoculated with arbuscular mycorrhizal fungi. The experiment was conducted in a factorial arrangement 2 x 6, being seedlings of Arabic coffee (Catuaí IAC 99 cv) inoculated and non-inoculated with mycorrhizal fungi (Factor 1), and five herbicides (chlorimuron-ethyl, oxyfluorfen, fluazifop-p-butil, fomesafen, [fluazifop-p-butil + fomesafen]) and a control treatment (Factor 2), with four replications. The seedlings inoculated with mycorrhizal fungi (Rhizophagus […]

The accidental drift can occur as a result of the herbicide application. However, little is known regarding the physiological changes in crops resulting from herbicide drift. The aim of the study was to evaluate the effects of simulated drift of glyphosate and clomazone in tomato. The experimental scheme was randomized and the treatments arranged in a factorial design, where factor A compared herbicides (glyphosate or clomazone) and factor B rates (0, 12.5, 25, 37.5 and 50% of the recommended rate). […]

The objective of this study was to evaluate the physiological characteristics of sugarcane after application of pre-emergence herbicides. For this, an experiment was conducted in a 2×5 factorial scheme, where the first factor consisted of cultivates RB 867515 and SP 81-3250, and factor B of the pre-emergence application of tebuthiuron, diuron, ametryn, a formulated mixture diuron + hexazinone and a control without herbicides. The experimental design was completely randomized, with four replications. The internal concentration of carbon (Ci), internal and […]

The aim of this study was to evaluate glyphosate application in Roundup Ready® soybean and yield at different levels of manganese applied by foliar way. The experiment was conducted in 2011/2012 agricultural year in Nova Maringa County, Mato Grosso State, in randomized blocks experimental design, in factorial scheme 3 x 4, with four replications. Three glyphosate levels (0.0; 0.972; 1.620 kg a.i. ha-1) and four manganese levels (0.0; 0.350; 0.700 and 1.050 kg ha-1) were used. Glyphosate was applied at […]

It was evaluated the effect of glyphosate reduced rates on growth and phosphorus (P) uptake of ‘Xodó’ common bean (Phaseolus vulgaris L.) genotype. The experiment was conducted in factorial scheme 4 x 2, in randomized blocks design with four replications, with the first factor constituted by reduced doses of 0, 4.32, 8.64 and 12.96 g ha-1 equivalent acid (e.a.) of glyphosate and the second factor consisted of soil P rates (50 and 250 mg dm-3). Evaluations were conducted 30 days […]

The objective of this work was to assess the photosynthetic efficiency of sugarcane crop, in pre-emergency application, of two inhibiting photosynthesis herbicides. For sugar cane cuttings planting (SP80-3280 genotype), pots with a capacity of 8 dm3 were used. Atrazine and tebuthiuron application was performed by using a stationary spray installed in laboratory conditions and after treatment application, plants were transported to a green house where were kept until the end of the trial. The reading of electrons transport rate (ETR) […]

There are indications that glyphosate could affect the phosphorus nutrition of soybean. Thus the present study was to evaluate P uptake absorption and allocation in soybean after glyphosate application. Two experiments were conducted in green-house in randomized complete block. The 1st experiment evaluated the glyphosate at 0,0; 1,5; 3,0; 6,0 and 12,0 g ha-1 and the 2nd experiment evaluated the glyphosate at 0,0; 200; 400 and 800 g ha-1. Glyphosate was applied at 21 days after plant emergence in foliar […]

The objective of the work was to evaluate the photosynthetic efficiency through electrons transport rate in sugar cane crop, after S-metolachlor and atrazine herbicides application in post-emergence. For planting sugar cane cuttings (SP80-3280 genotype), vases with 8 dm3 capacity were used for atrazine and S-metolachlor application. Application was performed through a stationary sprayer installed in laboratory and after treatments application, plants were transported to a green house and kept until the end of the study. Reading of electrons transport rate […]

The work aimed to quantify the intensity of herbicides action in Brachiaria decumbens (BRADC) and Digitaria horizontalis (DIGHO) control, through different uptake forms. This way, three experiments were carried out in plastic greenhouse conditions represented by atrazine (3.00 kg ha-1 + mineral oil 0.5% v v-1), oxyfluorfen (0.72 kg ha-1) and isoxaflutole (0.06 kg ha-1) herbicides, applied in initial post-emergence. Three uptake possibilities (root, foliar and root + foliar) and a check treatment were studied, in sandy and clay soils, […]