Dados do Trabalho

Título

DEVELOPMENT OF SOYBEAN SEEDLINGS IN DIFFERENT WATER LEVELS AFTER ZINC NANOPARTICLES APPLICATION

Resumo

Zinc nanoparticle (ZnO NPs) has been used as a new fertilizer alternative, although some applications technique and metal-microbial interactions should be studied. This research evaluated in sand matrix the effiency ZnO NPs of synthetized in a facile and inexpensive way, applied in different forms (seed priming, sand, or foliar) combined in different environment [non-drought, drought and drought +PcO6(Pseudomonas chlororaphis O6)]. ZnO NPs performed in sand (50 mg kg-1) inhibited growth as well as fluorescence parameters which are directly linked to photosynthesis efficiency. On the other hand, when soybean seeds were exposed to seed priming with 0.4% ZnO the root mass root mass was increased, mainly in non-drought conditions. Soybean plants cultivated in drought conditions will have compromised growth and development, although was demonstrate that soybeans seed inoculations with PcO6 may decrease undesired effects from drought mainly in growth assessments. In addition, PcO6 soybean inoculation mitigate metal ZnO toxicity. We concluded one of the first positive report about soybean interaction with PcO6 by drought and metal mitigation of toxicity. In addition, the best way to apply ZnO was through seed priming, while sand application was toxic and foliar application had no effects.

Palavras-chave

nanoparticles; fertilizer; zinc