Addition of a fine-textured soil to compost to reduce nutrient leaching in a sandy soil

Nguyen, Trung-Ta; Marschner, Petra

doi:10.1071/sr13105

Cited by 19 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…). Moreover, sandy soils at the xeric site can promote leaching of nutrients (Nguyen and Marschner ), thereby decreasing nutrient availability and thus plant regrowth.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, similar N mineralization rates at mesic and xeric sites below the upper soil surface (<15 cm), as well as higher SWC and higher root biomass at the mesic site (Hendricks et al 2006), would enable greater nutrient availability and uptake (Lavoie et al 2010). Moreover, sandy soils at the xeric site can promote leaching of nutrients (Nguyen and Marschner 2013), thereby decreasing nutrient availability and thus plant regrowth.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The role of understory phenology and productivity in the carbon dynamics of longleaf pine savannas

et al. 2019

View full text Add to dashboard Cite

Savanna ecosystems contribute ~30% of global net primary production (NPP), but they vary substantially in composition and function, specifically in the understory, which can result in complex responses to environmental fluctuations. We tested how understory phenology and its contribution to ecosystem productivity within a longleaf pine ecosystem varied at two ends of a soil moisture gradient (mesic and xeric). We used the Normalized Difference Vegetation Index (NDVI) of the understory and ecosystem productivity estimates from eddy covariance systems to understand how variation in the understory affected overall ecosystem recovery from disturbances (drought and fire). We found that the mesic site recovered more rapidly from the disturbance of fire, compared to the xeric site, indicated by a faster increase in NDVI. During drought, understory NDVI at the xeric site decreased less compared to the mesic site, suggesting adaptation to lower soil moisture conditions. Our results also show large variation within savanna ecosystems in the contribution of the understory to ecosystem productivity and recovery, highlighting the critical need to further subcategorize global savanna ecosystems by their structural features, to accurately predict their contribution to global estimates of NPP.

show abstract

“…). Moreover, sandy soils at the xeric site can promote leaching of nutrients (Nguyen and Marschner ), thereby decreasing nutrient availability and thus plant regrowth.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The role of understory phenology and productivity in the carbon dynamics of longleaf pine savannas

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Although its historical role remains unclear, mixing clayey river sediment with soil can also improve nutrient retention (Guyot et al 2007, Beusch et al 2019 and nutrient status (Herrera et al 1992). Furthermore, addition of clay to compost leads to enhanced nutrient retention (Nguyen and Marschner 2013).…”

Section: Introductionmentioning

confidence: 99%

Transformation of traditional shifting cultivation into permanent cropping systems: a case study in Sarayaku, Ecuador

Schritt¹,

Beusch²,

Guayasamín³

et al. 2020

E&S

View full text Add to dashboard Cite

Slash-and-burn shifting cultivation is common in indigenous societies in the Amazon basin. The large land use of this farming practice is of increasing concern because most indigenous communities are faced with population growth and territory losses. Our study aims to evaluate the feasibility of transforming shifting cultivation into a permanent cropping system by application of Terra Preta practice. For this purpose, an overview of the nutrient cycles of the agroecosystem of an indigenous family in Sarayaku, located in the eastern lowlands of the Ecuadorian Amazon, is provided. Household nutrient input and output data were collected and complemented with information from literature. The balances of nitrogen, phosphorus, and potassium were calculated in five different scenarios: (I) recycling of household waste; (II) recycling of household waste and urine; (III) recycling of household waste, urine, and feces. Whereas the first three scenarios include an external wood source, IV and V additionally integrate a tree plantation. In scenario IV the tree plantation is fertilized only with feces, while in V also with household waste. Even after consideration of nutrient losses, scenarios II to V show potential to accumulate nutrients at the farmland. These results indicate the feasibility of closing nutrient cycles with the purpose to generate permanent farmland by combining knowledge of Terra Preta practice and the way of life of indigenous communities. In a described step by step manner this new agricultural system could be implemented and improve greatly resilience and sustainability of land use in the Amazon.

show abstract

“…Just a little fine-textured soil, clay, or oxides of aluminum (Al) or Fe decreased P leaching compared with sand substrate containing organic material [1,9,10]. Kaolinite and iron (Fe) oxides were the best P sorbents at lower pH whereas illite and smectite clays were better sorbent at mid to higher pH [11,12].…”

Section: Introductionmentioning

confidence: 99%

Nutrient Leaching When Soil Is Part of Plant Growth Media

Logsdon

2017

Water

View full text Add to dashboard Cite

Soils can serve as sorbents for phosphorus (P), negating the need for artificial sorbents. The purpose of this study was to compare soils with different properties for their effect on nutrient levels in effluent. Four soils were mixed with sand and packed into columns 0.5 m long, with or without compost on the surface. Infiltration and effluent concentrations were measured before and after growing plants [Buffalograss (Buchloe dactyloides (Nutt.) Engelm.) and bluegrama grasses (Bouteloua gracilis H.B.K.) and red clover (Trifolium pratense L.)]. The growth media with compost at the surface had higher nutrient levels than the media without the compost, but the final effluent nitrate concentrations post-harvest were significantly lower for columns with the compost blanket (59 vs. 86 mg L −1 ). All of the nitrate concentrations were high (many >100 mg L −1 ) due to mineralization and nitrogen fixation. The final effluent P concentrations before planting were significantly higher in the soil with the most sand (0.71 mg L −1 ), and after harvest in the mixture that contained the high soil P levels (0.58 mg L −1 ). Some soils (high in aluminum or calcium) were adequate sorbents for P without additions of other sorbents, but soils often generated too much nitrate in effluent.

show abstract

Addition of a fine-textured soil to compost to reduce nutrient leaching in a sandy soil

Cited by 19 publications

References 25 publications

The role of understory phenology and productivity in the carbon dynamics of longleaf pine savannas

The role of understory phenology and productivity in the carbon dynamics of longleaf pine savannas

Transformation of traditional shifting cultivation into permanent cropping systems: a case study in Sarayaku, Ecuador

Nutrient Leaching When Soil Is Part of Plant Growth Media

Contact Info

Product

Resources

About