Use of Organic Wastes in Agriculture

Odlare, Monica; Lindmark, Johan; Ericsson, Anders; Pell, Mikael

doi:10.1016/j.egypro.2015.07.225

Cited by 19 publications

(8 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The utilization of organic wastes in agriculture has become one of the key ways to decrease the use of nonrenewable resources. This refers not only to the reduction of minerals mined from geological ores, which are necessary for fertilizer production, but also to the lower use of energy carriers (coal, fuel, and methane) [1]. Agriculture is a branch of the economy with a high potential for the effective use of raw biological wastes, as well as those which will eventually be transformed into organic fertilizers [2,3].…”

Section: Introductionmentioning

confidence: 99%

The Multifactorial Effect of Digestate on the Availability of Soil Elements and Grain Yield and Its Mineral Profile—The Case of Maize

Przygocka-Cyna

Grzebisz

2020

Agronomy

View full text Add to dashboard Cite

The fertilizer value of digestate (a biogas plant byproduct) depends on its impact on the availability of soil nutrients and on the concentration of minerals, including heavy metals, in the edible crop parts. This hypothesis was verified in field experiments with maize conducted in the years 2014, 2015, and 2016 in Brody, Poland. The two-factorial experiment consisted of the digestate application method and its rate: 0.2, 0.4, and 0.8 t ha −1 . Maize yield in consecutive years fitted the quadratic regression model, reaching a maximum grain yield of 11.5, 10.8, and 9.2 t ha −1 for an optimum digestate rate of 0.56, 0.66, and 0.62 t ha −1 , respectively. The supply of N-NO 3 to maize, concomitant with a shortage of magnesium and iron, was the key factor limiting the grain yield. Cadmium concentration in maize grain exceeded its threshold content in plants fertilized with digestate. An excessive concentration of lead in grain was recorded in the dry season 2015. Cadmium concentration in grain was controlled by the availability of soil Fe and Pb by a shortage of N-NO 3 , zinc, and copper. The negative relationship of Pb with K, Na, Zn, and Fe contents in grain suggests their usefulness as agents to reduce the accumulation of heavy metals.

show abstract

Section: Introductionmentioning

confidence: 99%

The Multifactorial Effect of Digestate on the Availability of Soil Elements and Grain Yield and Its Mineral Profile—The Case of Maize

Przygocka-Cyna

Grzebisz

2020

Agronomy

View full text Add to dashboard Cite

show abstract

“…The use of organic materials (compost, waste, urine, human waste, wastewater and bio solids) in farming is well documented in literature [1][2][3][4]. The aim is to improve soil fertility and nutrient supply to crops.…”

Section: Introductionmentioning

confidence: 99%

Evidence of uptake of different pollutants in plants harvested from soil treated and fertilized with organic materials as source of soil nutrients from developing countries

Olowoyo

Mugivhisa

2019

Chem. Biol. Technol. Agric.

View full text Add to dashboard Cite

The use of organic materials as soil nutrients to improve agricultural production is well documented. However, these organic materials may contain toxic pollutants that may bio-accumulate in plant tissues and eventually be consumed by humans. There is a misconception about the use of organic materials (sludge, urine, human waste and urban waste) in agriculture and organic farming. The review work examined the sources and uses of organic material in agriculture from developing countries and the dangers posed by the use of polluted organic materials in agriculture. The review examined through literature the availability and uptake of pollutants in crops that are cultivated from farming activities using organic materials. The review established the possibility of uptake of pollutants from treated waste materials that are used for farming. Some of the pollutants that can be bio-accumulated by plants when cultivated on soil containing these pollutants were documented. The review concluded by establishing the need to create awareness on the possible health risks associated with the use of organic materials if the materials used were polluted. The review also highlighted the importance of educating peasant farmers on the dangers associated with collecting waste materials from untreated sources.

show abstract

“…The first one is the supply of plant nutrients [9]. Recycling of organic wastes within agriculture can reduce the need for mineral fertilizer and restore organic carbon deficiency in the soil [10]. Use of organic waste in agriculture would be more sustainable than using inorganic commercial fertilizers.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Levels of Cadmium, Chromium and Lead in Bio Fertilizer from Various Feed Stocks and in Inorganic Fertilizers Used in Kenya

Kinaichu¹,

Nyaga²,

Njogu³

et al. 2020

AJOCS

View full text Add to dashboard Cite

This study was conducted to compare the levels of selected heavy metals (Pb, Cr and Cd) in inorganic fertilizers and bio slurry from different feed stocks. Bio slurry samples from chicken droppings, cow dung and pig wastes were analyzed for levels of selected heavy metals. Inorganic fertilizers for analysis DAP, CAN, Urea and NPK were procured from local market in Juja town next to Jomo Kenyatta University of Agriculture and Technology (JKUAT). Bio slurry samples were collected from Githunguri Sub County in Kiambu County and from mini digesters set up at JKUAT. Concentrations of Cd, Cr, and Pb were determined by Flame Atomic Absorption Spectrophotometer (Shimadzu 6200). Inorganic fertilizers were found to contain detectable amounts of lead metal. DAP had the highest amount of Pb at 0.03 mg/l followed by CAN (0.02 mg/l) Urea and NPK had 0.01 mg/l each. Bio slurry samples contained lower amounts of lead which was below detectable limit in chicken litter and pig wastes. Inorganic fertilizers contained Cd with the highest levels being in the phosphorous containing fertilizers DAP (0.41 mg/l) and NPK (0.48 mg/l). All samples contained Cr with the highest in bio slurry samples being 0.09 mg/l in cow dung collected from Githunguri. CAN had the highest level of Cr (0.08 mg/l) among the inorganic fertilizers. Bio slurry is a better alternative fertilizer in reducing heavy metal uptake and their subsequent bioaccumulation.

show abstract

Use of Organic Wastes in Agriculture

Cited by 19 publications

References 3 publications

The Multifactorial Effect of Digestate on the Availability of Soil Elements and Grain Yield and Its Mineral Profile—The Case of Maize

The Multifactorial Effect of Digestate on the Availability of Soil Elements and Grain Yield and Its Mineral Profile—The Case of Maize

Evidence of uptake of different pollutants in plants harvested from soil treated and fertilized with organic materials as source of soil nutrients from developing countries

Evaluation of Levels of Cadmium, Chromium and Lead in Bio Fertilizer from Various Feed Stocks and in Inorganic Fertilizers Used in Kenya

Contact Info

Product

Resources

About