Nutrição e fertilização de plantações clonais de eucalipto sob diferentes condições edafoclimáticas

Melo, Eduardo Aparecido Sereguin Cabral de

doi:10.11606/t.11.2014.tde-04122014-081956

Cited by 3 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Efetuou-se o plantio e a partir deste momento, a cada 2, 6, 10 e 14 dias, pesavam-se alguns vasos de cada turno de rega, determinando o peso médio destes, com o solo na umidade atual e se procedia a irrigação, visando a voltar o vaso ao peso com o solo úmido. Esse procedimento foi determinado, seguindo as recomendações de Melo et al (1998). Paralelamente, foram conduzidos quatro vasos de cada turno de rega para controle do aumento de peso das mudas, foram feitas correções dos pesos médios dos vasos, aos 45 e 90 dias, após o plantio.…”

Section: Methodsunclassified

Efeito de recipientes e substratos utilizados na produção de mudas de cafeeiro no desenvolvimento inicial em casa de vegetação, sob estresse hídrico

et al. 2010

View full text Add to dashboard Cite

Com o objetivo de avaliar os efeitos de recipientes e substratos no desenvolvimento inicial de cafeeiros (Coffea arabica L.) plantados em vasos dentro de casa de vegetação, sob diferentes níveis de estresse hídrico, foi conduzido um experimento no Setor de Cafeicultura da Universidade Federal de Lavras - UFLA, no período de janeiro a maio de 2004. O delineamento experimental utilizado foi em blocos casualizados (DBC) em esquema fatorial (3 x 3 x 4), sendo o primeiro fator constituído de três recipientes utilizados na produção das mudas, tubetes de polietileno rígido de 50 mL; tubetes de 120 mL; e saquinhos de polietileno, nas dimensões de 20 cm de altura por 10 cm de largura e capacidade volumétrica, aproximada, de 700 mL; o segundo fator constituído de três substratos utilizados na produção das mudas, substrato alternativo, composto por 65% de casca de arroz carbonizada + 35% de substrato comercial; substrato comercial Plantmax hortaliças HT; e substrato padrão, composto por 70% de terra + 30% de esterco bovino peneirados e o terceiro fator foi constituído por quatro intervalos entre irrigações, 2, 6, 10 e 14 dias. Observa-se que os recipientes de capacidades volumétricas diferentes e os substratos utilizados influenciam, significativamente, o desenvolvimento dos cafeeiros, sendo que, após 120 dias do transplante das mudas para vasos em casa de vegetação com diferentes níveis de estresse hídrico, as plantas provenientes de mudas produzidas em saquinhos de polietileno e tubetes de 120 mL contendo substratos alternativo e comercial apresentaram melhor desenvolvimento.

show abstract

Section: Methodsunclassified

Efeito de recipientes e substratos utilizados na produção de mudas de cafeeiro no desenvolvimento inicial em casa de vegetação, sob estresse hídrico

et al. 2010

View full text Add to dashboard Cite

show abstract

“…On the day plants were sown, the soil in the T m control pots received mineral fertilization consisting of 300 mg N (ammonium sulfate), 150 mg P (triple superphosphate), and 100 mg K (potassium chloride) per kg soil. The pots also received 30 mL of a micronutrient solution (0.96 g boric acid, 1.97 g copper sulfate pentahydrate, 3.08 g manganese sulfate tetrahydrate, 0.09 g sodium molybdate dihydrate, and 7.33 g zinc sulfate per liter) and 10 mL of a Fe-EDTA solution (Melo et al, 1998). In the WTS treatments, NPK was added to complete the content of these nutrients applied to the T m treatment.…”

Section: Methodsmentioning

confidence: 99%

Chemical attributes of a degraded soil after application of water treatment sludges

Silva

Melo

Teixeira

2005

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Mining is an activity that tends to degrade the environment. The restoration of mining areas, aims to accelerate and improve the succession process according to its future use. The objective of this work was to rehabilitate a soil degraded by tin mining activities in the Amazon Basin (Jamari National Forest, State of Rondônia) with the application of water treatment sludge (WTS), and verify the effect of sludge on values of pH (CaCl 2 0.01 mol L -1 ), organic matter, P, Ca, Mg, K, H+Al, and soil micronutrient contents when cultivated with native plants, legumes, and grass species. A factorial (3 × 5) experimental design was used to optimize the rehabilitation of these areas including three N rates (100, 200, and 300 mg N kg -1 soil supplied by WTS), five plant species (grasses, legumes, and native plants), and two controls (degraded soil with no fertilizer and degraded soil fertilized with mineral fertilizers), with four replications. WTS increased pH values. The chemical products used to treat the water contributed, in greater extension, to increase soil Ca and Fe contents. The use of WTS as fertilizer proved viable, since it contains nutrients for plants; however, nitrogen should not be used as a criterion to define the rate of sludge application, because it is present at small amounts in the WTS.

show abstract

“…Such an increase can be explained by biogeochemical cycling process, mainly because K was the third-most transferred nutrient to the soil via senescent leaf deposition (Figure 4f). Melo (2014) found that K increased between 24 and 48 months in one forest site and attributed this to the nutrient cycling process arising from the deposition of branches and leaves. According to Gonçalves et al (2008), this process starts in the second year of the Eucalyptus crop cycle, when the closure of the forest canopy occurs, and is responsible for the mineralization of the nutrients contained in the litter.…”

Section: Silva (2011) Evaluated the Effects Of Fertilization Levels Amentioning

confidence: 96%

“…Quarztzarênico (Entisol) show that K splitting reduces its leaching in the soil, with the fast K absorption by the crop being the main factor responsible for its decrease in the soil (Silva et al, 2013;Melo, 2014).…”

Section: Silva (2011) Evaluated the Effects Of Fertilization Levels Amentioning

confidence: 99%

“…Several studies report responses of Eucalyptus in soil with K contents below 1.0 mmol c dm -3 . Gava (1997), in plantations of Eucalyptus grandis with K contents of 0.4 mmol c dm -3 , Almeida et al (2010), in E. grandis with K levels of 0.2 mmol c dm -3 , Melo (2014), in clonal eucalypt plantations under different soil and climatic conditions with K contents between 0.3 and 0.4 mmol c dm -3 , and Gazola et al (2015), in Eucalyptus urophylla stands in Neossolo Quartzarênico (Entisol) with initial K contents of 0.2 mmol c dm -3 . Thus, the responses of Eucalyptus to K application are not consistent when K contents of the soil are higher; positive responses were obtained only in soils whose K contents did not exceed 1.0 mmol c dm -3 (Silveira and Malavolta, 2000).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Potassium Fertilization of Eucalyptus in an Entisol in Low-Elevation Cerrado

Gazola

Buzetti

Filho

et al. 2019

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

Potassium (K) is one of the most highly accumulating nutrients in Eucalyptus and, consequently, is heavily exported by the harvesting of wood. Moreover, its availability in the soil in most Brazilian plantation areas is very low, especially in the regions of the Cerrado biome, which has soils with low natural fertility and marked water deficits, implying a lack of nutrient supply and, consequently, a less efficient water use. Our objective was to evaluate the effects of K fertilization on Eucalyptus biomass yield, the addition of nutrients to the soil by leaf deposition, nutrient use efficiency, and soil K availability. The experiment was conducted with clone I144 (Eucalyptus urophylla) in the municipality of Três Lagoas/MS, in a Neossolo Quartzarênico Órtico (Entisol). The experimental design was a randomized block with four treatments and five replicates. The treatments consisted of four K doses (0, 90, 135, and 180 kg ha-1 of K 2 O) as KCl. Plant biomass production (leaves, branches, trunk, and bark), senescent leaf deposition, leaf nutrient concentrations, nutrient accumulation in the different plant compartments, nutrient use efficiency, addition of nutrients to the soil by leaf deposition, and soil K availability were evaluated. Potassium fertilization increased the biomass yield of Eucalyptus plants, senescent leaf K content, the transfer of K to the soil, the accumulation of K in the aerial plant parts, and the K content in the soil. However, it did not influence senescent leaf deposition yield or plant K use efficiency.

show abstract

Nutrição e fertilização de plantações clonais de eucalipto sob diferentes condições edafoclimáticas

Cited by 3 publications

References 49 publications

Efeito de recipientes e substratos utilizados na produção de mudas de cafeeiro no desenvolvimento inicial em casa de vegetação, sob estresse hídrico

Efeito de recipientes e substratos utilizados na produção de mudas de cafeeiro no desenvolvimento inicial em casa de vegetação, sob estresse hídrico

Chemical attributes of a degraded soil after application of water treatment sludges

Potassium Fertilization of Eucalyptus in an Entisol in Low-Elevation Cerrado

Contact Info

Product

Resources

About