Influência de retardantes de fogo na germinação de espécies agrícolas

Abstract

Products have been developed to assist in the management of fires, however these products require assessment as your damage to the environment. Therefore, this paper seeks assess the interaction of the physiological process of agricultural seeds germination under different concentrations of fire retardants. The experimental design was completely randomized design with six treatments: (i)) Hidroredentor Polymer at concentrations of 0.0; 0.1; 0.25; 0.5; 0.75 and 1 g L-1; II) Phos-Chek WD-881® at concentrations of 0.0; 0.1; 0.3; 0.6; 0.8 and 1 ml L-1; III) Hold Fire® at concentrations of 0.0; 0.7; 0.9; 1.1; 1.3 and 1.5 m L-1; and four replicates of 100 seeds. Germination tests were conducted in the laboratory, germination Chambers to 25ºc and photoperiod of 12 hours, for 7 and 14 days (depending on the species), the seeds were placed in plastic boxes germination on paper germitest. Phos-Chek products WD-881® influenced negatively the percentage of germination and vigor of millet, and slows the growth of the aerial part of the rice, while in the other species were not affected, Hold Fire® reduces the percentage of germination of corn, dry mass of root system of rice and soybeans and also decreases the length of the aerial part of the culture of soybeans, while the polymer Hidroretentor presented positive results, as well assist in the handling of the fire, did not cause toxicity to the crop seeds successors that are usually on the field in time propitious to fires.