Combined Use of Organic and Inorganic Nutrient Sources for Soil Fertility Maintenance and Replenishment

Palm, Cheryl; Myers, Robert J.; Nandwa, S.M.

doi:10.2136/sssaspecpub51.c8

Cited by 220 publications

(111 citation statements)

References 50 publications

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“…This shows that Amaranthus responded positively to the various types of soil amendments. The highest dry matter yields obtained from ½ manure + ½ urea combination concurs with those obtained by Palm et al (1997), Adeniyan and Ojeniyi (2005) and Chen (2008).…”

Section: Discussionsupporting

confidence: 85%

“…Organic residues with high amount of sulphur (S) could reduce soil pH as a result of the addition of sulphate thereby neutralizing the acidity produced by the oxidation of N during decomposition. Sole use of organic manures to sustain high crop production has, however, been reported inadequate, as they are required in rather large quantities to meet crops' nutrient requirements because of their relatively low nutrient content (Palm et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

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Comparative effect of pig manure, urea fertilizer and their combinations on the performance of Amaranthus cruentus in a rainforest Ultisol, Nigeria

Iren¹,

Ijah²,

Asawalam³

et al. 2016

J. Agric. Sci. Pract.

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The influence of pig manure, urea and their combinations on the performance of Amaranthus cruentus was investigated for two years in a rainforest Ultisol of Umudike. The experiment was laid down in a randomized complete block design with four replications. Six treatments consisted of pig manure applied at equivalent rates of 90 kg N/ha as full dose of manure, urea at 60 kg N/ha as full dose of urea. Other treatments were ½ dose of manure (45 kg N/ha) + ½ dose of urea (30 kg N/ha), ¼ dose of manure (22.5 kg N/ha) + ¾ dose of urea (45 kg N/ha), ¾ dose of manure (67.5 kg N/ha) + ¼ dose of urea (15 kg N/ha), and the absolute control. Results indicated that Amaranthus plant height was not significantly (P >0.05) affected by the treatments compared to the control. The overall results showed that the combination of ½ manure + ½ urea significantly (P < 0.05) increased stem girth (17.42 cm), number of leaves per plant (44.76), fresh yield (41.51 t/ha) and dry matter yield (3.49 t/ha) of Amaranthus than sole application of either of them, and is therefore recommended as the best for optimum production of Amaranthus in the study area.

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Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Comparative effect of pig manure, urea fertilizer and their combinations on the performance of Amaranthus cruentus in a rainforest Ultisol, Nigeria

Iren¹,

Ijah²,

Asawalam³

et al. 2016

J. Agric. Sci. Pract.

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“…In addition to providing necessary inputs of N from external sources, maintaining soil N stocks can also be aided by more efficient N r cycling, i.e. transfer of nitrogen already in the field from one component to another (Palm et al 1997).…”

Section: N R Intensification In Low Input Systems and Integrated Soilmentioning

confidence: 99%

Synthesis and review: Tackling the nitrogen management challenge: from global to local scales

Reis

Bekunda

Howard

et al. 2016

Environ. Res. Lett.

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One of the 'grand challenges' of this age is the anthropogenic impact exerted on the nitrogen cycle. Issues of concern range from an excess of fixed nitrogen resulting in environmental pressures for some regions, while for other regions insufficient fixed nitrogen affects food security and may lead to health risks. To address these issues, nitrogen needs to be managed in an integrated fashion, at a variety of scales (from global to local). Such management has to be based on a thorough understanding of the sources of reactive nitrogen released into the environment, its deposition and effects. This requires a comprehensive assessment of the key drivers of changes in the nitrogen cycle both spatially, at the field, regional and global scale and over time. In this focus issue, we address the challenges of managing reactive nitrogen in the context of food production and its impacts on human and ecosystem health. In addition, we discuss the scope for and design of management approaches in regions with too much and too little nitrogen. This focus issue includes several contributions from authors who participated at the N2013 conference in Kampala in November 2013, where delegates compiled and agreed upon the 'Kampala Statement-for-Action on Reactive Nitrogen in Africa and Globally'. These contributions further underline scientifically the claims of the 'Kampala Statement', that simultaneously reducing pollution and increasing nitrogen available in the food system, by improved nitrogen management offers win-wins for environment, health and food security in both developing and developed economies. The specific messages conveyed in the Kampala Statement focus on improving nitrogen management (I), including the reduction of nitrogen losses from agriculture, industry, transport and energy sectors, as well as improving waste treatment and informing individuals and institutions (II). Highlighting the need for innovation and increased awareness among stakeholders (III) and the identification of policy and technology solutions to tackle global nitrogen management issues (IV), this will enable countries to fulfil their regional and global commitments.

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“…Soil management practices that increase soil organic matter (SOM) such as cattle manure application increase the specific surface area of the soil through increased pore space, water transmission and storage porosity (Nyamangara et al, 2001;Celik et al, 2004;Hati et al, 2007;Chakraborty et al, 2010). Cattle manure application is very common in smallholder farming areas in sub-Saharan Africa (Ncube et al, 2009;Materechera, 2010) and offers opportunities for SOM buildup due to its low turnover rate (Palm et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Cattle manure and inorganic nitrogen fertilizer application effects on soil hydraulic properties and maize yield of two soils of Murewa district, Zimbabwe

Dunjana

Nyamugafata

Nyamangara

et al. 2014

Soil Use and Management

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This study set out to determine the effects of cattle manure and inorganic N-fertilizer application on the hydraulic properties and maize yield of a clay and sandy soil in a smallholder farming area of Zimbabwe. Four fields classified as homefields (HF: more fertile and closer to homesteads) and outfields (OF: less fertile and further from the homesteads) were selected on clay and sandy soil. They were subjected to four treatments, control (no fertility amendment), 5, 15 and 25 t/ha cattle manure + 100 kg/ha N (as ammonium nitrate) for 7 years. A two-way randomized complete block design was used with fertility and field type as the two factors. Clay soil hydraulic properties, which included density of macropores with a diameter >300 lm, unsaturated hydraulic conductivity, steadystate infiltration rate, moisture retention under low suction and maize grain yield, were significantly improved (P < 0.05) by fertility management compared with the control and were generally comparable between the HF and OF. Fertility management significantly improved maize grain yield on sandy soils but did not enhance hydraulic parameters, thereby indicating poor responsiveness in structural build-up. On the other hand, significantly different hydraulic parameters between the sandy soil HF and OF suggested effects of other factors not related to soil fertility and field type treatments. We therefore concluded that application of a high rate (25 t/ha) of cattle manure and inorganic Nfertilizer is beneficial for fertility restoration to the degraded OFs with associated comparable hydraulic properties on HFs and OFs on clay soil, unlike on sandy soil.

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Combined Use of Organic and Inorganic Nutrient Sources for Soil Fertility Maintenance and Replenishment

Cited by 220 publications

References 50 publications

Comparative effect of pig manure, urea fertilizer and their combinations on the performance of Amaranthus cruentus in a rainforest Ultisol, Nigeria

Comparative effect of pig manure, urea fertilizer and their combinations on the performance of Amaranthus cruentus in a rainforest Ultisol, Nigeria

Synthesis and review: Tackling the nitrogen management challenge: from global to local scales

Cattle manure and inorganic nitrogen fertilizer application effects on soil hydraulic properties and maize yield of two soils of Murewa district, Zimbabwe

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