Abstract
Some studies has shown that some fungicides may promote phytotonic effect on plants, resulting in gain on the growth and productivity. The objective here was to evaluate the phytotonic action of different fungicides, when applied on the seed and aerial part treatments on the soybean culture. Experimental design chosen was a randomized-block type with nine treatments consisting of eight groups of fungicides applied as seed treatment and aerial part of the plant with four replications. Pyraclostrobin + Methyl thiophanate favored root development on plantlets, plant height and grain yield, when it was applied on the soybean seeds. Fungicides applied on the plant aerial part showed positive effects on control of foliar diseases in soybean. The weight of one thousand grains was higher, when Pyraclostrobin + Methyl thiophanate was used for seeds treatment.
Key words: Pyraclostrobin, azoxystrobin, strobilurin, nutrients and productivity.
