Effects of Combinations of Triple Superphosphate and a Reactive Phosphate Rock on Yield and Phosphorus Uptake by Corn

Chien, S. H.; Adams, Fred; Khasawneh, F. E.; Henao, J.

doi:10.2136/sssaj1987.03615995005100060045x

Cited by 44 publications

(25 citation statements)

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“…4, a single curve was able to fit the data points from the check, PAPR, and SSP obtained in the two soils (Savannah T and Venago + Fe-gel) with lowest and highest P-fixing capacity. A similar relationship was also reported by Chien et al (1987), in which the internal efficiency of TSP was the same as that of a mixture of TSP and PR (North Carolina) with a P rate at 50:50. In the latter study, the internal efficiency of PR was found to be lower than that of TSP.…”

Section: Resultssupporting

confidence: 84%

Agronomic effectiveness of partially acidulated phosphate rock as influenced by soil phosphorus-fixing capacity

Chien

Hammond

1989

Plant Soil

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A greenhouse study compared the effect of soil P-fixing capacity on the relative argonomic effectiveness (RAE) of partially acidulated phosphate rock (PAPR) and water-soluble P. Such information is lacking in the literature. Six soils varying widely in P-fixing capacity (5.6%-56.1%) were used. A phosphate rock (Huila PR) from Colombia was acidulated with H2 SO4 at 50% of the level necessary to achieve full conversion to single superphosphate (SSP). Rates of P applied from PAPR or SSP were 0, 50, 100, and 300 mg P kg -~. The P fertilizers were mixed with the soils, and maize was grown for 6 weeks before harvest.The results show that the effectiveness of PAPR in increasing dry-matter yield and P uptake over yield and uptake obtained with SSP linearly increased as the soil P-fixing capacity increased. PAPR and SSP were equally effective in increasing dry-matter yield or P uptake at P-fixing capacities of 28 % or 36%, respectively. PAPR was found to be more effective than SSP in soils (treated with Fe-gel) with P-fixing capacity higher than these values. The internal efficiency, which is defined as the ratio between dry-matter yield and P uptake, was the same for both PAPR and SSP in all the soils.

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Section: Resultssupporting

confidence: 84%

Agronomic effectiveness of partially acidulated phosphate rock as influenced by soil phosphorus-fixing capacity

Chien

Hammond

1989

Plant Soil

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“…Another probable explanation for this interaction is the initial effect caused by the water-soluble P that would lead to higher plant uptake of P from PR due to better root system development (Chien et al, 1987).…”

Section: Resultsmentioning

confidence: 99%

“…As an alternative to the use of superphosphates, phosphate rocks or an association of both sources can be used to manage P fertilization with sources presenting distinct solubility traits (Chien et al, 2009). The joint utilization of these sources can be either accomplished by applying combinations of phosphate rock and soluble sources (Chien et al, 1987;Franzini et al, 2009aFranzini et al, , 2009bNachtigall et al, 1989;Menon et al, 1991;Prochnow et al, 2004b;Villanueva et al, 2006) or by applying them separately but in the same area (associated use).…”

Section: Introductionmentioning

confidence: 99%

Soybean yield in response to application of phosphate rock associated with triple superphosphate

Júnior

Prochnow

Klepker

2011

Sci. agric. (Piracicaba, Braz.)

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Soybean (Glycine max L. Merrill) crop started to be planted in the Brazilian Cerrado in the 1970's, and this region currently contributes with 57% of total soybean production in Brazil. Under natural conditions in this region, the soils present chemical limitations such as low pH, low Cation Exchange Capacity, low nutrient availability, and moreover, clayey soils have a high P fixation capacity mainly due to high contents of Fe/Al oxides. Since P is the most limiting nutrient is this region, a study was performed in the state of Maranhão, Brazil, in a Typic Hapludox, with clayey texture and low available P (extracted by resin). Treatments were defined to evaluate soybean response to broadcast Arad phosphate rock (PR) plus banded triple superphosphate (TSP) and to evaluate the soybean response to three proportions of PR and TSP. The experiment was established in October 2004 and was carried out for three consecutive crop years (2004/05 to 2006/07). The associated use of PR and TSP, in several situations, resulted in yields at least similar to that obtained with the use of the water soluble P source and, in some cases, even using lower P rates. Regarding the "mixtures", a linear response was observed when they were banded; however, when they were broadcasted, no increase in yield was observed above 50% of relative solubility. In conclusion, the association of sources differing in solubility may be a feasible agronomic option for P fertilizer management of soybeans. Key words: Brazil, Glycine max L. Merrill, Oxisols, P source solubility, phosphorus, cerrado soils Produtividade da soja em resposta à aplicação de fosfato de rocha associado ao superfosfato triplo RESUMO: O cultivo de soja (Glycine max L. Merrill) na região do Cerrado iniciou-se na década de 1970 e, atualmente, representa aproximadamente 57% da produção total do Brasil. Sob condições naturais, os solos dessa região apresentam limitações químicas, como baixos valores de pH, de Capacidade de Troca de Cátions, de disponibilidade de nutrientes, bem como elevada capacidade de fixação de P nos solos de textura argilosa, principalmente pelos altos teores de óxidos de Fe/Al. Levando-se em conta que o P é o nutriente mais limitante à produção nessa região, foi instalado um experimento no estado do Maranhão, em Latossolo Vermelho-Amarelo distrófico argiloso e com baixo teor disponível de P (extraído com resina). Objetivou-se verificar a resposta da cultura à aplicação do fosfato de rocha Arad (FR) em área total mais superfosfato triplo (SFT) em aplicação localizada; e verificar a resposta da cultura a três proporções de FR e SFT. O experimento foi instalado em outubro de 2004 e conduzido por três safras consecutivas (2004/05 a 2006/07). A utilização associada de FR e SFT, em várias condições, resultou em produtividades no mínimo semelhantes à obtida com a fonte solúvel e, em alguns casos, até utilizando menores quantidades de P. Quanto às "misturas", verificou-se resposta linear para a aplicação localizada; entretanto, para a aplicação a lanço, não hou...

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“…Acidulation, Partial acidulation , Blending with sulphur (Rajan 1982(Rajan , 1983(Rajan , 1987, Heap leaching (Habashi 1989(Habashi , 1994, Blending and granulation (Lupin and Le 1983, Chien et al 1987, Chien and Menon 1995a (Lai and Eberl 1986).…”

Section: Chemical Modificationmentioning

confidence: 99%

Farming with rocks and minerals: challenges and opportunities

Straaten

2006

An. Acad. Bras. Ciênc.

158

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In many parts of the world food security is at risk. One of the biophysical root causes of falling per-capita food production is the declining quality and quantity of soils. To reverse this trend and increase soil fertility soil and plant nutrients have to be replenished. This review provides a literature survey of experiences of using multi-nutrient rock fertilizers for soil fertility enhancement from temperate and tropical environments. Advantages and limitations of the application of rock fertilizers are discussed. Examples are provided from two successful nutrient replenishment projects in Africa where locally available rock fertilizers are used on highly leached acid soils. The potential of combining organic materials alongside rock fertilizers in soil fertility replenishment strategies is stressed.

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Effects of Combinations of Triple Superphosphate and a Reactive Phosphate Rock on Yield and Phosphorus Uptake by Corn

Cited by 44 publications

References 0 publications

Agronomic effectiveness of partially acidulated phosphate rock as influenced by soil phosphorus-fixing capacity

Agronomic effectiveness of partially acidulated phosphate rock as influenced by soil phosphorus-fixing capacity

Soybean yield in response to application of phosphate rock associated with triple superphosphate

Farming with rocks and minerals: challenges and opportunities

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