Produção de fitomassa por plantas de cobertura e mineralização de seus resíduos em plantio direto
By José Luiz Rodrigues Torres, M. Pereira, A. J. Fabian. 2008
184 citations recorded by the source corpus.
The objective of this work was to evaluate dry biomass production, decomposition rate and macronutrients release (N, P, Ca, Mg and S) of cover crops cultural residues, in a no-till savanna soil. The cover crops tested were: pearl millet (Pennisetum americanum sin. typhoides), brachiaria grass (Brachiaria brizantha cv. Marandu), sorghum [Sorghum bicolor (L.) Moench], pigeon pea [Cajanus cajan (L.) Millsp.], sunn hemp (Crotalaria juncea L.) and black oat (Avena strigosa Schreb), compared to a fallow plot (control). The experiment was carried out in an Oxisol, medium texture. A randomized block design, in a split-plot array in time, with four replications, was used. Dry biomass production was evaluated 110 days after sowing. Decomposition rate was evaluated by litter bags containing cultural residues. Millet and sunn hemp are the cover crops (grass and legume) with the highest dry biomass production and N accumulation, in the two evaluation periods. The highest decomposition rate and nutrient release occurred at 42 days after desiccation. The highest values of half life were observed in dry period.
Subfields: Plant Science, Soil Science
View Paper: https://www.semanticscholar.org/paper/14b60be4fd880e002ceeb5d1fc8baae47c6b0222
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Citations in the corpus
- Produção de fitomassa e acúmulo e liberação de nutrientes por plantas de cobertura na safrinha (2011, background): “Torres et al. (2008) observaram que a U. brizantha foi mais eficiente em acumular N do que o C. cajan, ao serem semeados no início do período chuvoso.”
- Cover Crops as Affecting Soil Chemical and Physical Properties and Development of Upland Rice and Soybean Cultivated in Rotation (2018, background): “In addition, there is pigeon pea legume (Cajanus cajans) and sunn hemp (Crotalaria spp.) which besides the production of biomass, can fix atmospheric nitrogen (Torres et al, 2008).”