Physical, chemical and microbiological properties of a Dystrophic Yellow Latosol using manipueira

Abstract

The study aimed to evaluate chemical, microbiological and hydro-physical changes of a Dystrophic Yellow Latosol, receiver of different levels of manipueira (cassava wastewater) application, in the cultivation of 'Terra Maranhão' banana. The experimental design was a randomized block with three replications in a factorial scheme 3 x 4, in which it was considered three soil depths and four levels of manipueira. It was evaluated the weighted mean diameter of the aggregate, the percentage of aggregation at different periods, soil density, particle density, porosity and soil saturated hydraulic conductivity, in addition to pH of P (mg dm -3), K (mg dm-3), Ca (cmolc dm-3), Mg (cmolc dm-3), Ca+Mg (cmolc dm-3), Al (cmolc dm-3), Na (cmolc dm -3), H+Al (cmolc dm-3), CEC (cmolc dm-3), V%, OM (g kg-1), soil microbial biomass (Ug Cg-1 dry soil), acid phosphatase (Ug PNP g-1 h-1). The use of manipueira influenced some physical characteristic of the soil, but it was not possible to specify the effect of increasing application dosage. Therefore, the application did not affect the biological indicators assessed in the soil or its pH. The use of manipueira as a fertilizer in the doses used in this study showed low increase of K, P, H+Al and Al in the soil and a good increase of Mg, Ca and Ca+Mg, Na, CEC and V%.

Chemical attributes of soil and dry mass accumulation of maize fertilized with cassava wastewater

“…Controversially, SILVA JÚNIOR et al (2012), when administering cassava wastewater as fertilizer source in banana, did not observe significant increase of available phosphorus in soil contents (Typic Dystrophic Yellow Latosol -Oxisol) located in the state of São Paulo.…”

“…On the other hand, SILVA JÚNIOR et al (2012) andCABRAL et al (2010) determined that application of cassava wastewater did not alter soil pH, when cultivating banana and oat, respectively.…”

Chemical Attributes of Soil Fertilized with Cassava Mill Wastewater and Cultivated with Sunflower

“…The pH of dystrophic Entisol soil fertilized with 0 and 65 m 3 ha −1 cassava wastewater “in natura” and planted with lettuce rose from 5.08 to 7.72, respectively [ 25 ]. However, when studying the effect of the cassava wastewater on chemical, physical, and microbiological characteristics of a typical Hapludox in the coastal plains of the Recôncavo da Bahia, Brazil, the application of cassava wastewater did not alter the pH of the soil [ 9 ]. There was an increase in pH of “Oxic Tropudalf” resulting from the application of cassava wastewater to the top soil (0–10 cm), which decreased with increasing soil depth (11–20 cm) and time (5 days).…”

“…In a pioneering research with the application of cassava mill wastewater, a significant increase in the levels of exchangeable potassium and phosphorus was observed in soil cultivated with cassava compared to the surrounding control soils, without deleterious effects on the soil and crop [ 8 ]. There was an increase in fertility in soil treated with cassava mill wastewater for the cultivation of lettuce and banana [ 3 , 9 ], with no report of adverse effects on plants.…”

Vinhaça como fonte de potássio: resposta da sucessão aveia-preta/milho silagem/milho safrinha e alterações químicas do solo na Região Noroeste do Rio Grande do Sul

“…Por isso, SILVA et al (2007) alertam com relação à quantidade de vinhaça aplicada ao solo como fertilizante, para que não exceda a capacidade de retenção de água pelo solo, que pode potencializar a perda de K por lixiviação. Também não Foram encontradas diferenças para os teores de K trocável do solo, quando 50 e 100% da recomendação do K para a cultura do milho foram supridas com vinhaça (BEBÉ et al, 2008).…”