Studies on the nutritional status of habanero pepper (Capsicum chinense Jacq.) in relation to organic fertilization are still incomplete and preliminary. The aim of study were to evaluer the effect of rates of organic fertilizer produced from Family agriculture waste on growth and nutritional status habanero pepper. The experiment was carried out in a greenhouse located at the Federal Rural University of Amazonia, municipality of Belém, State for Pará, Brazil. A completely randomized design (CRD) was used, with five treatments and four replications. Each experimental plot consisted of a pot with a volume of 3.6 dm3 of soil, in which the seeds were sown. Five doses of organic fertilizer were tested : 0%, 15% (525 g), 30% (1050 g), 45% (1575 g) and 60% (2100 g) of substrate volume, composed of a mixture of chicken manure (10%), duck manure (20%), cassava peel (15%) , cassava leaf (15%), bean straw (15%), rice husk (15%) and corn cob (10%), mixed in volumetric proportions in the substrate. To mix the different amounts of organic fertilizer, a Yellow Latosol with a sandy texture was used, removed from the surface layer (0-20 cm). The best results were achieved at 103 days using a dose of 60% of organic fertilizer. The content and accumulation of macronutrients in leaf tissues showed the following order: N˃K≥S˃Ca≥Mg˃P and N˃K˃S˃Mg˃Ca˃P. In the fruits, the content and accumulation of macronutrients presented the following order: N˃K˃S˃P˃Mg˃Ca.
Anthropogenic Dark Earth, one of the most fertile soils in the world, often occur in the Amazon region and shows the effect of intensive occupation of land by pre-Columbian indigenous peoples. By studying Dark Earth, it is possible to develop techniques to reproduce its fertility. This study aimed to reproduce Indian Dark Earth through the use of vegetable and animal waste deposited on oxisol and to survey the biodiversity of the microbial community of this "New Dark Earth" (TPN) in the municipality of Tailândia-Pará, Brazil, during the dry and rainy seasons. The experimental design was a randomized block design with 4 replicates, in an area of 3 ´ 3 m, with 2 m separating them. Combinations of coal (C), waste sawdust (RPS), shredded wood blade waste (RLT), bone residue (RA), as well as blood and fat (S) were used for the following treatments: 1 (C), 2 (RPS), 3 (RLT), 4 (RA), 5 (C + RPS), 6 (C + RLT), 7 (C + RA), 8 (RPS + RLT), 9 (RPS + RA), 10 (RLT + RA), 11 (C + RPS + RLT), 12 (C + RLT + RA), 13 (RPS + RLT + RA), 14 (C + RPS + RLT + RA), 15 (C + RPS + RLT + RA + S), 16 (Control), and 17 (C + RPS + RA). The bacterial population was higher than the fungal population in the 2 study periods, and the rainy season increased the fungal population. The predominant fungi were of the genus Aspergillus, Penicillium, Sclerotium, Trichoderma. The genus Bacillus and gram-negative bacteria were detected in all treatments. The number of fungal colonies was higher than the number of bacterial colonies.
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