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Carnauba bagana (CB) and carbonized rice husk (CRH) have interesting chemical and physical properties for the production of seedlings and cultivation of Chile pepper. The objective was to evaluate the production of seedlings and the production of Chile pepper fruits in substrates based on CB and CRH. The experiment was carried out in a nursery with 50% shade, in a completely randomized design with five treatments, with five replications. biometric parameters were measured before and after transplanting the seedlings. Production parameters were measured at harvest. Analysis of variance was performed and data were explored using regression analysis. The substrates significantly influenced all variables studied. It was observed that CB and CRH positively influenced biometric and productivity parameters. 61.5% CB + 38.5% CRH is recommended to obtain a greater number of fruits and greater weight of Chile pepper fruit. [ABSTRACT FROM AUTHOR]

In the cassava (Manihot esculenta Crantz) cultivation system, planting seedlings directly in the field is widely used. However, establishment of plants by this method is slow, taking about 15 days to start the formation of shoots and roots. The plant in this phase is not very competitive, which leads to the formation of uneven and low-productivity areas. Production of seedlings on substrates is an alternative that can improve the uniformity of the plant stand, as well as allow more careful selection of the best propagules. Viability of this propagation method depends on the substrate, which must have ideal physical and chemical properties to meet the needs of the crop. The objective of this work was to evaluate the use of decomposed buriti stem (Mauritia flexuosa L. f) as a substrate in the propagation of cassava seedlings. The substrates were composed of decomposed buriti stems and soil in the following proportions: 0:100; 20:80; 40:60; 60:40; 80:20; and 100:0 (volume). The addition of decomposed buriti stem improved development of the aerial part, provided greater survival for cassava seedlings in an increasing linear fashion, and promoted increases in the levels of N, P, K, Ca, and Mg of cassava seedlings. It was determined that there is agronomic efficiency in the use of buriti residue for the production of cassava seedlings. [ABSTRACT FROM AUTHOR]

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