Microbial activities, carbon, and nitrogen in an irrigated Quartzarenic Neosol cultivated with cowpea in southwest Piauí
| Autor: | João Irene Filho, Alessandro Franco Torres da Silva, Aderson Soares de Andrade Júnior, José Ferreira Lustosa Filho, Júlio César Azevedo Nóbrega, Larissa Castro Diógenes, Rafaela Simão Abrahão Nóbrega |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Total organic carbon
Irrigation Soil test chemistry.chemical_element Atributos biológicos do solo Soil carbon Nitrogênio do solo Biology Nitrogen lcsh:S1-972 Soil respiration Agronomy chemistry Microbial population biology Desertificação Cultivar lcsh:Agriculture (General) General Agricultural and Biological Sciences Vigna unguiculata |
| Zdroj: | Semina: Ciências Agrárias, Vol 38, Iss 4, Pp 1765-1774 (2017) |
| ISSN: | 1679-0359 |
| Popis: | The aim of this study was to evaluate microbial biomass and total organic carbon and nitrogen of an irrigated Quartzarenic Neosol cultivated with two cowpea cultivars in Bom Jesus, Piauí, Brazil. The experiment was conducted in a randomized experimental block design in split plots. The plots consist of two cowpea cultivars (Aracê and Tumucumaque) and the subplots were composed of five different irrigation regimes (L1 = 108.2; L2 = 214.7; L3 = 287.9; L4 = 426.1, and L5 = 527.7 mm). Soil samples were collected at a depth of 0-0.20 m in order to evaluate basal soil respiration, microbial biomass carbon, metabolic quotient, microbial quotient, content, and storage of soil carbon and nitrogen. Basal soil respiration, microbial biomass carbon, microbial metabolic quotient, and microbial quotient are influenced by the interaction between cowpea cultivars and irrigation. The cultivar Aracê showed greater stimulus to the microbial community, while the irrigation regimes with 214.7 and 287.9 mm (60 and 90% of ETo, respectively) provided the best moisture conditions for microbial activities. |
| Databáze: | OpenAIRE |
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