Palisadegrass effects on N fertilizer dynamic in intercropping systems with corn
An. acad. bras. ciênc
; 89(3): 1917-1923, July-Sept. 2017. tab, graf
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em En
| LILACS
| ID: biblio-886757
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BR1.1
ABSTRACT
ABSTRACT Corn grain yield, nitrogen (N) fertilizer efficiency and distribution to corn alone and three forms of corn and palisadegrass (Urochloa spp.) intercropping implantation was investigated. A field experiment with 15N labeling fertilizer was performed in randomized block design. No form of palisadegrass intercropping implantation affected corn grain yield, total N accumulation and N use efficiency (NUE), which were 8.7 t ha-1, 205 kg ha-1 and 37% respectively. The palisadegrass produced on average 1.9 t of dry mass, absorbing a maximum of 6 kg ha-1 or 5.5% of N fertilizer during corn growing. Furthermore, the palisadegrass did not affect N fertilizer distribution in soil-plant system, in which 28.2% was recovered in the soil and 40.4% in the plants (corn + palisadegrass). The results show that for the three intercropping implantation methods the palisadegrass did not compete with corn for N fertilizer.
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Índice:
LILACS
Assunto principal:
Solo
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Produtos Agrícolas
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Zea mays
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Fertilizantes
Tipo de estudo:
Clinical_trials
Idioma:
En
Revista:
An. acad. bras. ciênc
Assunto da revista:
CIENCIA
Ano de publicação:
2017
Tipo de documento:
Article