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- Title
Produção de massa seca e teores de clorofilas no capim tifton 85.
- Authors
BARBIERI JUNIOR, Élio; Pereyra ROSSIELLO, Roberto Oscar; ZONTA, Everaldo; Alberto BUCHER, Carlos; Cristiane RIBEIRO, Roberta
- Abstract
The objective of this study was to evaluate Tifton 85 grass cultivated with nitrogen in the mixed form in relation to the production and chlorophyll content obtained directly and indirectly. The treatments were composed of four doses of N: zero, 80, 160 and 240 mg kg-1 of soil and four sampling dates: 14, 21, 28 and 35 days of regrowth (DAC). Ammonium nitrate (NH4NO3) was used as the source of N. A completely randomized experimental design was used in a factorial scheme 4 x 4 x 4. The parameters evaluated were: dry mass production, leaf leaf ratio (F:C), foliar chlorophyll content total(CFT) and readings obtained with an electronic chlorophyll meter (ICF - Chlorophyll index). The experiment allowed to understand how the development of Tifton 85 grass under nitrogen nutrition of mixed source behaved. The grass responded to treatments with increased dry mass production and the F:C ratio, elevated CFT and ICF. The monitoring of the variation of chlorophyll content, in a non-destructive way, was made possible by the use of the chlorophyllometer apparatus, however, under high doses of N, luxury consumption was identified.
- Publication
Nativa, 2018, Vol 6, Issue 4, p428
- ISSN
2318-7670
- Publication type
Article
- DOI
10.31413/nativa.v6i4.5080