Organic Waste Materials for Soil Fertility Improvement in the Border Region of the Eastern Cape, South Africa

Adediran, J. A.; Baets, N. De; Mnkeni, P. N. S.; Kiekens, L.; Muyima, N. Y. O.; Thys, A.

doi:10.1080/01448765.2003.9754974

Cited by 45 publications

(39 citation statements)

References 19 publications

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“…Horst et al (2001) observed that while herbaceous cover crops can contribute to increased P availability to crops, these measures cannot substitute for maintenance P fertilizer application. In similar studies, Adediran et al (2003) reported P mineralization of 13 mg P/kg for tobacco waste and about 4 mg P/kg for pineapple waste with P values of 0.22% and 0.12%, respectively. Mafongoya et al (2000) reported net P immobilisation when leaves of agroforestry tree species (Gliricidia sepium, Acacia nilotica), with total P content of \0.2%, were incubated with soil.…”

Section: Discussionmentioning

confidence: 79%

“…Cereal cover crops, such as oats and rye grass produce high biomass with large C and N contents and have potential to improve soil organic matter and reduce N loss through leaching, wind and water erosion (Sainju et al 2005). Organic soil amendments such as cattle manure, pineapple waste, tobacco waste, poultry manure, and pig dung have been shown to improve soil N status in SA (Mkile 2001;Adediran et al 2003).…”

Section: Introductionmentioning

confidence: 99%

“…The quantification of residue decomposition and nutrient release is thus a pre-requisite for optimising nutrient-use efficiency by maize. The fertilizer value of plant residues left on the soil surface will depend on their ability to decompose and release nutrients (Adediran et al 2003). Several studies have determined that N, lignin (L) and polyphenol (PP) contents, C/N, L/N, PP/N and (L ?…”

Section: Introductionmentioning

confidence: 99%

“…Carbon dioxide evolution has been used to indicate microbial activity during decomposition (Mafongoya et al 2000;Adediran et al 2003;Kurzatkowski et al 2004;Chintu et al 2004). Macro-and meso-fauna are responsible for primary decomposition while soil micro-flora (soil microbes) play a major role in nutrient cycling by releasing constituent nutrients found in organic material (Kurzatkowski et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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Decomposition, nitrogen and phosphorus mineralization from winter-grown cover crop residues and suitability for a smallholder farming system in South Africa

Murungu

Chiduza

Muchaonyerwa

et al. 2010

Nutr Cycl Agroecosyst

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Increasing land degradation has prompted interest in conservation agriculture which includes growing cover crops. Besides providing soil cover, decaying cover crops may release substantial amounts of nutrients. Decomposition, N and P release from winter cover crops [grazing vetch (Vicia darsycarpa), forage peas (Pisum sativum) and oats (Avena sativa)] were assessed for suitability in a cropping system found in the smallholder irrigation sector of South Africa. Nitrogen and P contribution to maize growth by cover crop residues was also estimated. Decrease in mass of cover crop residues was highest in grazing vetch (7% remaining mass after 124 days) followed by forage peas (16%) and lastly oats (40%). Maximum net mineralized N and P were higher for grazing vetch (84.8 mg N/kg; 3.6 mg P/kg) than for forage peas (66.3 mg N/kg; 2.7 mg P/ha) and oats (13.7 mg N/kg; 2.8 mg P/kg). Grazing vetch and forage pea residues resulted in higher N contribution to maize stover than oat residues. Farmers may use grazing vetch for improvement of soil mineral N while oats may result in enhancement of soil organic matter and reduction land degradation because of their slow decomposition. Terminating legume cover crops a month before planting summer crops synchronizes nutrient release from winter-grown legume cover crops and uptake by summer crops.

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Section: Discussionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Decomposition, nitrogen and phosphorus mineralization from winter-grown cover crop residues and suitability for a smallholder farming system in South Africa

Murungu

Chiduza

Muchaonyerwa

et al. 2010

Nutr Cycl Agroecosyst

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“…Some studies have shown that composting cassava peels eliminated the problem of waste disposal and increased the manure value of the materials (Adediran et al, 2003;Akanbi et al, 2007). Poultry manure is known to contain nutrient elements which can support crop production and enhance the physical and chemical properties of the soil (John et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Response of African Nightshade (Solanum sp.) to cassava peel-based manure in the humid forest zone of Cameroon

Nkengafac¹,

Francis²,

Ives³

et al. 2017

Afr. J. Agric. Res.

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Studies were conducted at Ekona in the humid forest agro-ecological zone of Cameroon to evaluate the effects of cassava peel-based manures on the growth and yield of African Nightshade. The first experiment consisted of evaluating the composted cassava peel and poultry manure applied at the rates of 0, 5, 10 and 20 t/ha and 150 kg/ha NPK (20:10:10) fertilizer. In the second experiment, a dried and grind mixture of cassava peel and poultry manure were applied at rates of 0, 5, 10 and 20 t/ha and 150 kg/ha NPK (20:10:10) fertilizer. Treatments were laid out in a randomized complete design and replicated three times. Growth and yield data were collected and subjected to analysis of variance (ANOVA). Significant treatments means were separated using students T test at p≤0.05. The different manures prepared were rich in macro nutrients particularly N (1-1.6%), P (0.7-1.4%) and K (1-1.7%). The experimental results showed that the applications of cassava peel-based manures significantly (p<0.05) influenced number of leaves, branches and biomass yield of African Nightshade. The use of cassava peel-based organic manure was very comparable to the use of inorganic fertilizer (NPK). Thus, cassava peel-based manure is promising for the enhancement of African Nightshade production, which could reduce the cost of fertilizer use and limit environmental pollution in Cameroon.

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Composted tobacco waste increases the yield and organoleptic quality of leaf mustard

Nguyen

Dinh

Hoang

et al. 2022

Agrosystems Geosci & Env

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Tobacco (Nicotiana tabacum) waste is produced in many countries and is phytotoxic due to the alkaloid content; in Vietnam the waste is usually burned causing air pollution. We composted tobacco waste with chicken manure in different proportions—1 t of waste ± accelerant (C1 and C2); 0.8 t of waste + 0.2 t of chicken manure ± accelerant (C3 and C4); and 0.7 t of waste + 0.3 t of chicken manure ± accelerant (C5 and C6)—for 30 d in covered heaps. Three mixtures containing the accelerant (C2, C4, and C6) reached temperatures of ∼55 °C, that 5s, hot enough to suppress disease and weeds. Composting decreased the alkaloid content from ∼6,000 to ∼200 mg kg−1, and C4 with a C/N ratio of 19:1, was used in a field trial. The compost treatments (0, 10, 15, and 20 t ha−1) were combined fertilizer with phosphorus (40 kg ha−1), nitrogen (60 kg ha−1) and potassium (90 kg ha−1) for leaf mustard (Brassica integrifolia). The yield increased from ∼17 to ∼29 t ha−1 with the amount of compost applied, and the nitrate concentration decreased concomitantly from ∼67 to ∼42 mg NO3–N kg−1 fresh weight, presumably due to ongoing composting (nitrogen drawdown). Organoleptic evaluation showed a preference for the crops grown with the compost amendments. Whether remains to be seen whether one‐off compost applications >20 t ha−1 and repeated, large applications provide additional, long‐term production benefits, or if the benefits may be outweighed by the accumulation of persistent, phytotoxic alkaloids.

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Organic Waste Materials for Soil Fertility Improvement in the Border Region of the Eastern Cape, South Africa

Cited by 45 publications

References 19 publications

Decomposition, nitrogen and phosphorus mineralization from winter-grown cover crop residues and suitability for a smallholder farming system in South Africa

Decomposition, nitrogen and phosphorus mineralization from winter-grown cover crop residues and suitability for a smallholder farming system in South Africa

Response of African Nightshade (Solanum sp.) to cassava peel-based manure in the humid forest zone of Cameroon

Composted tobacco waste increases the yield and organoleptic quality of leaf mustard

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