Radish yield and quality are factors influenced by water stress that may occur during periods of drought or irrigation handled inappropriately, interfering negatively in plants development, producing radishes of inferior quality and in lesser quantity. In addition to irrigation, which makes water available in the system, it is important to maintain it with the use of water-retaining products such as hydrogel. The aim of this work was to evaluate radish yield, submitted to three different hydrogel doses combined with two water slides. The experimental design was in factorial scheme 3 x 2, with three water slides (50%, 75% and 100% Eto – reference evapotranspiration estimate) and two hydrogel doses (40 and 60 g m-2) with four replicates. Number of leaves, horizontal and vertical root diameter (mm), total and shoot length (cm), fresh mass of root and shoot (g), dry mass of shoot and root (g) and yield (t ha-1) were evaluated. The best results, regarding radish production and development, were obtained when using 50% of Eto with 60 g m-2 of hydrogel in combination. Thus, radish cultivation in oxisoil was influenced by the use of hydrogel, which provided a more efficient water level use.

This study aimed to evaluate the effect of water supply and sowing time on yield and yield components of two corn hybrids grown during offseason in the region of Dourados-MS, Brazil. The experimental design was randomized blocks in sub-divided plots, with four replications. In the main plot, two sowing dates were defined (2013 crop year: February 27 and March 27; and 2014 crop year: March 18 and April 5). In subplots, irrigation management systems were defined (irrigated and rainfed). Hybrids AS 1555 and AS 1590 were grown in the sub-plots. The parameters evaluated were plant height, ear insertion height, stem diameter, ear length and diameter, 100-grain weight, and grain yield. Regardless of irrigation and hybrid used, sowing time significantly affected corn yield, which responded to climate changes throughout crop cycle. Water supply increased corn yield, with the highest value being of 9338 kg ha -1 (156 bags ha -1 ) and obtained when irrigated AS 1555 hybrid was sown on February 27, 2013.

Aim of this study was to investigate the influence of the two methods of grafting on  Passiflora gibertti in this antioxidant capacity. Experiment was conducted under field conditions in two agricultural years 2012/2013 and 2013/2014 following a randomized block design, being studied three treatments, plants not grafted, grafted plants by cleft grafting and grafted plants laterally and with maintenance of the root system. Fruit were harvested when they were physiologically ripe and taken to the laboratory for juice extraction and antioxidant compounds analysis. Total phenolic compounds, ascorbic acid, total flavonoids, Xanthoids contents and total antioxidant activity (DPPH) were evaluated. The use of two root systems showed higher contents of total phenolic compounds, flavonoids and ascorbic acid, however, had the total xanthoids contents decreased. It is concluded that the technique of grafting with the use of two root systems is favorable to the accumulation of higher levels of antioxidants.

The experiment was conducted into two stages, the first being the barley seed production and application of glyphosate and the second the vigour tests in the laboratory. Both stages were performed at the Experimental Farm of Agrarian Sciences at Grand Dourados Federal University (UFGD). In field, four cultivars of barley was sowing being: BRS Cryst, BRS Kallibre, BRS Demeter, BRS Sampa. For desiccation, the glyphosate herbicide (480 g L-1 of active ingredient) was used, applied using a backpack sprayer at dose of 5 L ha-1. The experimental design used was randomized blocks, and each cultivar was divided into five replications, applying the herbicide in four of them leaving one without application for control. The application was made when seeds presented water content close to 50%. At second stage, eight evaluation were made being one at the day of glyphosate application, one, two, three, eight, ten and fourteen days after application and without application in natural physiological maturity. In each evaluation, sowing was performed according to Rules to Seed Analysis. The analyses were: First count,  percentage of germination,  germination speed index, mean germination time, mean germination speed, accelerated aging and synchronization index. Glyphosate has interfered negatively in the physiological maturation of barley seeds when the herbicide was applied in pre-harvest. The results obtained showed that there was an increase in seeds germination after 14 days of application, however, the means were significantly smaller in relation to seeds harvested at the point of physiological maturation without glyphosate application.

The objective of the work was to evaluate the interference of saline water in seeds germination of several species of economic interest. The experiment was developed at the Laboratory of Support to Teaching, Research and Extension of the Experimental Farm of Agricultural Sciences, Grand Dourados Federal University, in the municipality of Dourados, Mato Grosso do Sul state, Brazil. The germination tests were performed separately for each species, thus, each one has a methodology determined by Rules for Seed Analysis. The species used were: cotton, chickpea, pea, safflower, sesame, soybeans, and vetch. The treatments were formed by sodium chloride (NaCl) dissolved in water: T1 – control (0.0 g L-1 – 0.065 mS cm-1); T2 – 3.0 g L-1 (5.50 mS cm-1 ); T3 – 6.0 g L-1 (10.70 mS cm-1) and T4 – 9.0 g L-1 (15.10 mS cm-1). All treatments were cultivated in B.O.D with constant light and temperatures according to the species. The characteristics evaluated were: First count; percentage of germination; germination speed index; mean germination time; mean germination speed and seedling length. The experimental design used was completely randomized with four treatments and four replications. Doses up to 6.0 g L-1 of NaCl had not interfered on germination of cotton, chickpea, safflower and sesame seeds. Pea, soybean and vetch have not had their germination influenced by concentrations of NaCl used. Water salinity may not harm germination, however, it affects seedlings growth, and may be a determining factor in achieving the ideal population of each crop at field level.