Abstract
Corn and garlic are important crops to Curitibanos region (state of Santa Catarina – Brazil), often planted in alternate cropping seasons. Production costs are high, especially due to N fertilizer, since they are highly demanding in N. In addition to reducing economic costs, the search for environmentally sustainable technologies has stimulated the study of interactions between plants and growth-promoting microorganisms. Rhizobacteria, e.g., Bacillus sp., have been presenting as growth-promoting microorganisms. Five isolates of garlic rhizosphere from 27 individuals of [...]
Highlights
In the region of Santa Catarina plateau, where is located the Curitibanos county, in Santa Catarina State, Brazil, agriculture is an important activity, with 2,061 farms, of which 71.85 % are focused on small-scale farmers (CEPA, 2018)
The isolates EB02, EB12, EB14, EB16, and EB23 tested in the greenhouse showed a positive effect on plant growth, similar to the supplying 50 % of the required N (Leoncio and Botelho, 2017)
Concerning plant height, the EB16 isolate was similar to treatments with 100 and 50 % of required N, and they differed from the other treatments (Figure 1a)
Summary
In the region of Santa Catarina plateau, where is located the Curitibanos county, in Santa Catarina State, Brazil, agriculture is an important activity, with 2,061 farms, of which 71.85 % are focused on small-scale farmers (CEPA, 2018). The main crops are soybeans, corn, beans, garlic, and onions (CEPA, 2018). Corn (Zea mays L.) and garlic (Allium sativum L.) are alternately cropped in many farms: corn is grown in spring/summer and garlic, in autumn/winter. Nitrogen fertilization is one of the most expensive agricultural inputs to the production costs (Silva et al, 2005; Silva, 2017). The environmental impact caused by excessive and continued use of these inputs must be considered (Resende, 2002)
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