The objective of the present study was to evaluate the initial growth of Khaya senegalensis plants under water deficit. The work was carried out at Ipameri, Goiás on a bench in full sun following the completely randomized experimental design with six treatments and six replications. 120-day-old mahogany plants (Khaya senegalensis) grown in eight-liter pots were subjected to six treatments for 12 days (plants irrigated daily with 100, 80, 60, 40, 20 and 0% of evapotranspiration) with six replications. At 132 days after emergence, the plants were assessed for: plant height, stem diameter, number of leaves, foliar area, daily transpiration, relative water content, total chlorophylls and carotenoids, leaf, stem and root mass ratios, and total biomass. The data were submitted to F-test and, when significant, to regression test at 5% probability. High stomatal control, reduced transpiration, low leaf concentration of total chlorophylls and increased root system growth to the detriment of the shoot growth indicate that Khaya senegalensis is tolerant to moderate water deficit.

Abscission of flowers and fruit in Citrus latifolia cultivars is more intense than in seeded Citrus ones. The purpose of this study was to evaluate the effect of different levels of branch girdling in C. latifolia fruit fixation. The work was carried out in an orchard of C. latifolia grafted onto three-year-old Citrus limonia spaced 3x1, located in the Goiás State University experimental field. The experiment was set up according to the randomized block design with four treatments (girdling of 0, 25, 50 and 100% of the branches existing in the plant), five replications, parcels of four usable plants and total of 20 plants. Girdling was accomplished on 29/08/2014 and full flowering occurred on 13/09/2014. The plants that had 100% of their branches girdled presented high productivity of fruit with low juice volume. Those with 50% of branches girdled showed higher productivity and good juice yield per fruit. Results indicate that total blocking of transportation of assimilation from the canopy to the root system has negative impact on the volume of fruit juice.

The objective of this study was to evaluate the effects of nutrition and salt stress on the growth and accumulation of mineral elements in Jatropha curcas plants. The work was conducted in greenhouse with 100% solar radiation interception, at Goiás State University, Ipameri Campus, Goiás, Brazil. The experiment was set up in five-liter containers following the completely randomized design in 4 x 2 factorial arrangement (I: Clark's complete nutrient solution, Clark's nutrient solution modified to prevent contents of ii: nitrogen, iii: potassium or iv: magnesium, and two salinity treatments, distilled water and saline water [2 dS m

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