The aim of this study was to evaluate the use of different organic residues and bokashi in the substrate formulation in the initial growth of marmelo-do-cerrado. The experiment was carried out in pots under shading (50%). The following organic residues were tested: poultry manure (PM) with rice husk base, PM with wood shavings base, Organosuper®, and castor bean meal, in a control with only soil. All treatments were assessed with and without bokashi. The experimental arrangement was a 5 × 2 factorial scheme in a randomized block design with four replicates and four plants. The greatest plant height was observed when the plants were cultivated in PM with rice husk base with bokashi. The pigment contents, photochemical efficiency, biomasses and quality of seedlings were highest in Organosuper® with bokashi. We recommend the use of Organosuper® and PM with rice husk base, both with bokashi, in the growth of marmelo-do-cerrado.

RESUMO:Objetivou-se com este trabalho avaliar a produção de massa e o teor de flavonoides de plantas de marcela cultivadas com fósforo e cama de frango e colhidas em duas épocas. Estudou-se a combinação de doses de P 2 O 5 (0, 100, 200 e 300 kg ha -1 ) na forma de superfosfato triplo, com e sem cama de frango (10 t ha -1 ), arranjados como fatorial 4x2, no delineamento blocos casualizados, com quatro repetições. Foram feitas duas colheitas das plantas, consideradas como parcelas subdivididas no tempo. A propagação foi indireta, com semeio em bandejas e transplante ao campo. As plantas foram colhidas aos 195 e 223 dias após o transplantio -DAT. A altura máxima das plantas foi de 1,14 m com uso da cama de frango e de 0,97 m sem cama, aos 195 dias após o transplantio. A produção máxima de massa fresca de parte aérea das plantas foi de 30,31 t ha -1 na colheita aos 223 DAT, enquanto a de massa seca foi de 11,38 t ha -1 , ambas com o uso de 300 kg ha -1 de P 2 O 5 . A massa fresca de inflorescências foi maior (4,08 t ha -1 ) com adição de cama de frango ao solo e menor (3,49 t ha -1 ) sem cama de frango; em resposta às doses de fósforo, cresceram linearmente, sendo a máxima de 4,65 t ha -1 com uso de 300 kg ha -1 de P 2 O 5 , independente da época de colheita. A massa seca de inflorescências foi máxima de 2,38 t ha -1 com o uso de 300 kg ha -1 P 2 O 5 na colheita aos 223 DAT. A maior produção de massa seca e o maior teor de flavonoides das inflorescências foram obtidos com o cultivo das plantas de marcela em solo com cama de frango (10 t ha -1 ) e com P 2 O 5 (300 kg ha -1 ) na colheita aos 223 dias após o transplantio.Palavras-chave: Asteraceae, resíduo orgânico, fósforo, planta medicinal.ABSTRACT: Total biomass and flavonoid contents of Achyrocline satureioides in response to phosphate fertilizer and broiler litter at two successive harvests. The aim of this experiment was to evaluate the biomass yield and flavonoid contents of Achyrocline satureioides grown under different levels of phosphate fertilizer in association with broiler litter, during two successive harvests. Four levels of P 2 O 5 (0, 100, 200 and 300 kg ha -1 ), as triple superphosphate, and two levels of broiler litter (0 and 10 t ha -1 ) were arranged as a 4x2 factorial design in randomized blocks with four replications. Two harvests of plants, considered as splitplot, were made. Seeds were sown in polystyrene trays then transplanted to the experimental field and harvested at 195 and 223 days after transplanting (DAT). The maximum heights of the plants were 1.14 m under the addition of broiler litter and 0.97 m without it, at 195 days after transplanting. The highest yields of total fresh weight (30.31 ton ha -1 ) and dry weight (11.38 ton ha -1 ) were obtained at 223 DAT, both with the concentration of 300 kg ha -1 P 2 O 5 . The fresh weight of the inflorescences was greater under the addition of broiler litter (4.08 ton ha -1 ) than without it (3.49 ton ha -1 ). The plants grew linearly in response to the use of phosphate, and the maximum yield wa...

RESUMO:O objetivo do trabalho foi avaliar a influência de diferentes composições de substratos no crescimento inicial de Campomanesia xanthocarpa, bem como avaliar índices fisiológicos. O trabalho foi desenvolvido em Dourados-MS, no período de janeiro a outubro de 2008. Foi estudada aCampomanesia xanthocarpa sob cinco diferentes substratos (LVd/A/O= Latossolo Vermelho distroférrico+areia grossa lavada+Organosuper® (5:4:1 v/v); LVd/A/C= Latossolo Vermelho distroférrico+areia grossa lavada+cama-de-frango (5:4:1 v/v); LVd/A/O2= Latossolo Vermelho distroférrico+areia grossa lavada+Organosuper® (7:2:1 v/v); LVd/A/C2= Latossolo Vermelho distroférrico+areia grossa lavada+cama-de-frango (7:2:1 v/v); LVd/A= Latossolo Vermelho distroférrico+areia grossa lavada (6:4 v/v)), em vasos de 7 dm3, e mantidos em ambiente protegido com 100% de luminosidade. O substrato composto por Latossolo Vermelho distroférrico + areia grossa lavada proporcionou maior diâmetro de caule (8,29 mm), massa seca de raiz, caule e folhas (6,98; 4,49 e 9,06 g/planta, respectivamente) e aumento nos índices fisiológicos nas avaliações finais, indicando que este substrato pode ser utilizado no desenvolvimento de Campomanesia xanthocarpa.

Producing Brazilian Cerrado plants, especially ones endangered, is essential for your maintenance. In this way, fertilization is furthermore uncertain. Here, we demonstrate the impact of soil addition of nitrogen (N, 4.20, 18.90, 31.50, 44.10 and 59.85 mg·dm −3 ) and phosphorus (P, 9.56, 57.38, 95.62, 133.86 and 181.67 mg·dm −3 ) fertilizers levels on the development and on nutrients uptake by Jacaranda decurrens subsp. symmetrifoliolata (carobinha), species of the Brazilian Cerrado, in a long term pot trial. The N and P addition together increased plant height and N concentration in roots. N and P also increased the P concentration and content on the roots in young plants, but in the older plants, isolated effect of both was stronger than their combined action. The N addition promoted branching, production of dry leaves and dry xylopodium, contents of K, Ca and P on the leaves, and N content on the roots. However, the N reduced xylopodium diameter, leaf area, and Mg contents in the young plants, but increased them in the older plants. The P addition increased stem diameter and dry biomass, P concentration and N content on the leaves, Ca content on the roots and also reduced N concentration on the leaves. However, the P addition increased Mg concentration on the roots in the young plants and reduced it in the older plants. In general, N levels ranging between 25.69 -38.85 mg·dm −3 and P levels between 84.39 -109.23 mg·dm −3 promote more effectively the plant development. Thus, N and P fertilization can promote the aerial development of plant and a differential allocation of nutrients between the carobinha tissues.

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