A comparison of the application of different waste products to a lettuce crop: Effects on plant and soil properties

Castro, Elena; Mañas, Pilar; Heras, Jorge de las

doi:10.1016/j.scienta.2009.08.013

Cited by 51 publications

(28 citation statements)

References 26 publications

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“…The previous study has also found that the sewage sludge application increased soil organic matter significantly (Wang et al 2008;Castro et al 2009). The high salinity of mudflat soils limits its use for agriculture.…”

Section: Resultsmentioning

confidence: 82%

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Bai

Tao

et al. 2013

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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The objective of this study was to investigate the impact of sewage sludge amendment (SSA), with the rates of 0, 30, 75, 150, and 300 t ha (1 , on soil chemical properties and biomass, aboveground and root growth, and nitrogen and phosphorus uptake of ryegrass (Lolium perenne L.) seedling grown on a mudflat soil. Results showed that SSA modified the chemical properties of mudflat soil by decreasing soil salinity and pH, increasing soil organic matter, total and available N and P, and heavy metals. The biomass of root and aboveground parts of ryegrass showed increments with increasing SSA rates. Maximum increases of 5.6-and 1.3-fold in fresh weight of aboveground parts and root of ryegrass were observed at 300 t ha (1 rate. Root grown at all SSA rates showed positive response to higher nutrient availability in the mudflat soil with increasing root average diameter and volume. The root length and surface area at 30 t ha (1 SSA rate was significantly higher than those in other treatments. The sewage sludge amendment increased N and P content in both aboveground and root parts of ryegrass. Cd, Cr, Cu, Mn, Ni, and Zn accumulation in ryegrass was positively correlated with SSA rates. However, heavy metal concentrations in ryegrass did not exceed the safety standard for feed in China (GB 13078-1999), except for Cd at 300 t ha (1 SSA rate. The study suggests that sewage sludge can be applied for mudflat soil amendment, which provides an innovative solution pertaining to new arable land resources and solid waste disposal. The optimum SSA rate is 150 t ha (1 with maximum plant yield yet permissible metal accumulation.

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Section: Resultsmentioning

confidence: 82%

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Bai

Tao

et al. 2013

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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“…The Treatment details are given in materials and methods Chatterjee: Nutrient sources and organic lettuce production increased uptake of essential plant nutrients is expected to enhance carbohydrate synthesis and effective translocation of these photosynthetes to the sink which is expressed in head weight and subsequently green biomass yield. Lee et al (2004) stated that addition of manure compost increased total organic matter, macronutrient and micronutrient in the soil that helped in accumulation of fresh weight in lettuce.Workers like Pavlou et al (2007) and Castro et al (2009) also pointed that enhancement of head yield of lettuce under organic nutrient source may be attributed to increased macronutrients and organic matter content of the soil. Naidu et al (2000) observed that application of farmyard manure and vermicompost in presence of biofertilizer harboured signifi cantly more microbes in soil.…”

Section: Resultsmentioning

confidence: 99%

Influence of nutrient sources on growth, yield and economics of organic lettuce production under foothills of eastern Himalayan region

Chatterjee

2015

Emir. J. Food Agric

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“…Sewage sludge, on the other hand, is rich in OM and inorganic nutrients and may be a good nutrient source for crops. Previous studies have shown that the SSA can increase soil OM content significantly (Wang et al 2008;Castro et al 2009), reclaim mine tailing-contaminated soils (Domene et al 2009), amend calcareous soils (Hemmat et al 2010), modify soil physicochemical and biological properties (Singh and Agrawal 2008) and improve physicochemical properties of saline soil, especially C and N contents (Lakhdar et al 2010b). This study demonstrated that the SSA increased OM content of mudflat soil, and soil OM increased with increasing SSA rate.…”

Section: Discussionmentioning

confidence: 99%

Mudflat soil amendment by sewage sludge: Soil physicochemical properties, perennial ryegrass growth, and metal uptake

Bai

Tao

et al. 2013

Soil Science and Plant Nutrition

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The fast pace of cropland loss in China is causing alarm over food security and China's ability to remain selfreliant in crop production. Mudflats after organic amendment can be an important alternative cropland in China. Land application of sewage sludge has become a popular organic amendment to croplands in many countries. Nevertheless, the land application of sludge to mudflats has received little attention. Therefore, the objective of the present work was to investigate the impact of sewage sludge amendment (SSA) at 0, 30, 75, 150 and 300 t ha −1 rates on soil physicochemical properties, perennial ryegrass (Lolium perenne L.) growth and heavy metal accumulation in mudflat soil. The results showed that the application of sewage sludge increased organic matter (OM) content by 3.5-fold while reducing salinity by 76.3% at the 300 t ha −1 rate as compared to unamended soil. The SSA reduced pH, electric conductivity (EC) and bulk density in mudflat soil, increased porosity, cation exchange capacity (CEC) and contents of nitrogen (N), phosphorus (P), exchangeable potassium ions (K + ), sodium ions (Na + ), calcium ions (Ca 2+ ) and magnesium ions (Mg 2+ ) in comparison to unamended soil. There were 98.0, 146.6, 291.4 and 429.2% increases in fresh weight and 92.5, 132.4, 258.6 and 418.9% increases in dry weight of perennial ryegrass at 30, 75, 150, and 300 t ha −1 , respectively, relative to unamended soil. The SSA increased metal concentrations of aboveground and root parts of perennial ryegrass (p < 0.05). The metal concentrations in perennial ryegrass were Zn > Cr > Mn > Cu > Cd > Ni, and the metal concentrations in roots were significantly higher than aboveground parts. The metal accumulation in perennial ryegrass correlated positively with sludge application rates and available metal concentrations in mudflat soil. Land application of sewage sludge was proved to be an effective soil amendment that improved soil fertility and promoted perennial ryegrass growth in mudflat soil. However, heavy metal accumulation in plants may cause food safety concern.

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A comparison of the application of different waste products to a lettuce crop: Effects on plant and soil properties

Cited by 51 publications

References 26 publications

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Influence of nutrient sources on growth, yield and economics of organic lettuce production under foothills of eastern Himalayan region

Mudflat soil amendment by sewage sludge: Soil physicochemical properties, perennial ryegrass growth, and metal uptake

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