Germinação de sementes e crescimento de plântulas de feijão sob diferentes concentrações de zinco

Abstract

The soils of southern Brazil have satisfactory levels of zinc and large amounts that are fixed in nutritional units of the vegetables, however due to a certain application of pig slurries with the zinc molecules in areas to the fillet of annual vegetables such as beans, excess zinc can cause phytotoxicity problems to the crop. The objective of this analyte and experimental in the effect of different doses in zinc during an germination and development. the experiment was next to the seed laboratory and the community of the federation federation, in a plot of plots subdivided into blocks at random, with cross classification and 4 replicates. The seeds were divided into 5 batches of 16 replicates of 50 seeds and increasingly seeded in germinated paper, previously added to a volume of water corresponding to 2.5 times the weight of the paper. the water published for soaking the five sides of a series of zinc sulphate (znso4), so that the final zinc bases were 0, 100, 200 and 300 mg /L generating four different treatments. the paper rolls were added in germinators at a constant temperature of 25ºC, with the first 5 replicates of each treatment being the fifth, sixth, seventh, eighth and ninth days after sowing, zinc affected the percentage of germination. a significant reduction already in the dosage of 100mg / L, the same occurred for the aerial part and the root of the bean. The use of the most important germination and major to the aerial aerial and the root of planted strathules of tostreptile herbs control tractants with zinc. We conclude that the phytotoxic effect of the element under the analyzed variables.