SANTOS, L. C.; http://lattes.cnpq.br/8152849544001696; SANTOS, Leônidas Canuto dos.
Resumen:
Corn is a crop of high economic expression for Brazil and of great social and
cultural importance for the semiarid region of Northeast Brazil. One of the
factors limiting corn production in this region is water scarcity. Plant growthpromoting bacteria (BPCP) have been shown to be a viable and ecologically
correct alternative to overcome water stress in crops with high water
requirements such as corn. In view of this, it aimed to evaluate the productive
performance of the corn crop submitted to irrigation depths and water stress
attenuating products. The experiment was conducted at the experimental farm of the Federal University of Campina Grande, located in the city of São
Domingos - PB. The design used was in randomized blocks, in a split plot scheme where the plots corresponded to four irrigation depths (40; 60; 80 and
100% of ETo) and the subplots to four products: C = Control - without product application attenuating water stress; P1 = Biobaci (Bacillus subtillis); P2 = No-
Nema (Bacillus amyloliquefaciens) + Azokop (Azospirillum brasiliensis) and P3
= Product from Empresa Ecofertil LTDA (containing Co and Mo) with four replications, making 16 plots and 64 subplots. At the end of the crop cycle,
water use efficiency, weight of 100 grains, productivity and their relative values were evaluated. The use of No-Nema (Bacillus amyloliquefaciens) + Azokop
(Azospirillum brasiliensis) increased the mass of 100 grains and the productivity
under high water scarcity, the efficiency in the use of water, relative productivity
and relative mass of 100 grains presented the best results under severe water scarcity when using the product containing Co and Mo.