FERREIRA, L. V.; http://lattes.cnpq.br/7063086334418641; FERREIRA, Laurenio Ventura.
Résumé:
Bell pepper (Capsicum annum L.) is among the ten most cultivated vegetables and of
greatest economic importance in the Brazilian market. change in crop growth and
development. Water scarcity is one of the factors that most limit crop growth and
productivity. Water stress negatively affects physiological and biochemical processes
in plants that restrict plant growth, development and productivity. The use of
nanofertilizers and bioinoculants can be an alternative to reduce the use of chemical
fertilizers in sweet pepper production, in addition to increasing the efficiency of soil
biota due to the addition of beneficial microorganisms. Therefore, the objective of this
work was to evaluate the influence of nanoparticles of zinc oxide (NPZnO) and zinc
sulfate (ZnSO47H2O), associated or not with plant growth promoting bacteria (BPCP)
as attenuator of water stress. The work was carried out at the Experimental Farm
Rolando Henrique Rivas Castellón, at the Federal University of Campina Grande, in
the municipality of São Domingos-PB, 30 km from the Pombal Campus, PB. The
experimental design used was randomized blocks, in a split-plot scheme in space,
where the plots comprised two levels of irrigation (100% and 50% of potential
evapotranspiration -Eto) and the subplots comprised five treatments, composed of the
combination of nanoparticles of zinc oxides, zinc sulfate and bioinoculants (Bio),
composed of a mixture of the commercial product Biobaci® (Bacillus subtillis BV-09,
containing 1.0 x 108 CFU/mL) and Nonema® (B. amyloliquefaciens, containing 1, 0 x
109 CFU/mL), these being (T1 = ZnSO47H2O via foliar, T2 = NPZnO via foliar, T3 =
NPZnO via foliar + Bio, T4 = ZnSO47H2O via soil + Bio and C = Control), with 4
replications. The evaluated variables were the dry mass of leaves, stems and shoots,
number of total fruits, commercial and not; and total production. The application of
NPZnO via foliar, NPZnO via foliar + Bio it is ZnSO47H2O via soil + Bio, under a depth
of 100% of ETo promoted greater gains in the accumulation of phytomass, production
and productivity of bell pepper.
