Phosphorus and potassium balance in soil under crop rotation and fertilization

Steiner, Fábio; Pivetta, Laércio Augusto; Castoldi, Gustavo; Costa, Mônica Sarolli Silva de Mendonça; Costa, Luiz Antônio de Mendonça

doi:10.5433/1679-0359.2012v33n6p2173

Cited by 11 publications

(14 citation statements)

References 24 publications

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“…The higher uptake in M TSP -F at seedling stage in the LRS of both years was due to the high solubility of TSP fertilizer and consequently availability in soil (Table 2). P is immediately released into soil with addition of mineral fertilizers (Steiner et al, 2012). Wasonga et al (2008) found significantly (P < 0.05) increases in P uptake by maize varieties following TSP application.…”

Section: Phosphorus Uptakementioning

confidence: 93%

“…Determination of P balances: Soil P balance (kg ha -1 yr -1 ) was calculated after the second year of the experiment as the sum of the total amount of P nutrient applied as fertilizer (kg ha -1 ), the change in the amount of P in a layer of soil to 0.20 m depth (kg ha -1 ) and the total amount exported in harvested grain (kg ha -1 ), all divided by the duration of the assessment period (years), according to the following equation (Steiner et al, 2012;Raij et al, 1997);…”

Section: Calculation Proceduresmentioning

confidence: 99%

“…When the outputs of a particular nutrient are larger than the inputs in the farming system, the condition is one of unsustainability (Steiner et al, 2012).…”

Section: P Balances In Soilmentioning

confidence: 99%

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White Lupin (Lupinus albus L. cv. Amiga) Increases Solubility of Minjingu Phosphate Rock, Phosphorus Balances and Maize Yields in Njoro Kenya

Lelei¹,

Onwonga²

2014

SAR

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Exudation of high amounts of citrate in white lupin (Lupinus albus L. cv. Amiga) has the advantage of being effective in mobilization of a wide range of sparingly soluble P sources. To improve cultivation system of maize, a field experiment was conducted to assess effectiveness of white lupin (Lupinus albus L. cv. Amiga) in increasing solubility of minjingu phosphate rock (MPR), phosphorus balances and maize yields in Njoro sub-County, Kenya. The randomized complete block design experiment was conducted for four seasons; short (October -February) and long rain seasons

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Section: Phosphorus Uptakementioning

confidence: 93%

Section: Calculation Proceduresmentioning

confidence: 99%

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White Lupin (Lupinus albus L. cv. Amiga) Increases Solubility of Minjingu Phosphate Rock, Phosphorus Balances and Maize Yields in Njoro Kenya

Lelei¹,

Onwonga²

2014

SAR

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“…Phosphorus availability is not only affected by nutrient management, but also cropping system (Nunes et al, 2011), which can help with the sustainability of agricultural production (Steiner et al, 2012). Phosphorus in plant residues from previous crop may be utilized by following crops (Noack et al, 2012).…”

Section: Ajabsmentioning

confidence: 99%

Influence of Phosphorus Application With Avail on Following Soybeans in Southeastern Coastal Plains

Wiatrak¹

2013

American Journal of Agricultural and Biological Sciences

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Application of Phosphorus (P) in combination of with polymer Avail to previous crop may affect soybeans [Glycine max (L.) Merr.] under dryland conditions. The objective of this study was to determine the effect of two P rates (45 and 90 kg P 2 O 5 ha −1 ) with and without Avail applied to winter wheat (Triticum aestivum L.) previous crop on growth and yields of dryland soybeans near Blackville, SC from 2011 to 2012. Soybeans were evaluated for Leaf Area Index (LAI), plant Normalized Difference Vegetation Index (NDVI), plant height, grain moisture, seed weight and grain yields. Compared to untreated control, P applications at 45 kg and 90 kg ha −1 with Avail to winter wheat significantly increased soybean grain yields by 12.3% and 20.2%, respectively. Phosphorus applied to previous crop at 45 kg and 90 kg P ha −1 with polymer Avail, improved soybean yields by 8.1 and 4.0% over P treatments not treated with Avail, respectively. Soybean LAI significantly increased by 22.8% at 3 months after planting with application of P at 90 kg ha −1 and polymer Avail to winter wheat previous crop compared to untreated control. Lower P rate of 45 kg ha −1 with Avail to winter wheat increased soybean LAI by 11.8%. Applications of 45 kg and 90 kg P ha −1 with Avail to previous crop improved plant NDVI at 3 months after soybean planting by 1.8% and 2.5%, respectively. Based on significant linear relationship, increasing plant NDVI by 0.1 improved soybean yields by 126.1 kg ha −1 . Applications of P with Avail to winter wheat did not affect soybean LAI and NDVI at 2 months after planting, plant height, grain moisture and seed weight. Results from this study indicate that P applications with Avail to previous crop significantly improved plant LAI and NDVI at 3 months after planting and increased soybean yields.

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“…However, the available K pool is relatively low and corresponds to crop demand during only a few years of intense cropping and the release of K from nonexchangeable sources can contribute significantly to plant K nutrition in some soils in the short and medium term (SIMONSSON et al, 2007;STEINER et al, 2012;ROSOLEM et al, 2012). When solution and exchangeable K are reduced to low levels by plant uptake, non-exchangeable K can be released from clay interlayers (BORTOLUZZI et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization

et al. 2015

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The changes in soil potassium pools under intense cropping and fertilized with potash fertilizer are still little known to the soils of Paraná State. The effects of potassium fertilization and successive cropping on changes in K pools in different soils of Paraná, Brazil, were investigated in this study. Twelve soil samples, collected from the upper layer 0-0.20 m, were fertilized or not with K and subjected to six successive cropping (i.e., soybean, pearl millet, wheat, common beans, soybean and maize). All the crops were grown for 45 days, and at the end of the second, fourth and sixth cropping, the soil from each pot was sampled to determination of the total K, non-exchangeable K, exchangeable K and solution K. The result showed that the soil potassium pools varied widely. Total K concentration ranged from 547 to 15,563 mg kg -1 (4,714 mg kg -1 , on average). On the average, structural K, non-exchangeable K, exchangeable K and solution K of the soils constituted 84.0, 11.3, 4.6 and 0.1% of the total K, respectively. Soils differ in the ability to supply potassium to the plants in the short to medium term, due to the wide range of parent material and the degree of soil weathering. When the soils were not fertilized with K, the successive cropping of plants resulted in a continuous process of depletion of nonexchangeable K and exchangeable K pools; however, this depletion was less pronounced in soils with higher potential buffer capacity of K. The concentrations of K non-exchangeable and exchangeable K were increased with the addition of potassium fertilizers, indicating the occurrence of K fixation in soil. After the second cropping, the soil exchangeable K levels remained constant with values of 141 and 36 mg kg -1 , respectively, with and without the addition of K fertilizer, reflecting in establishing of a new dynamic equilibrium of K in the soil. Key words: Potassium availability, non-exchangeable K, exchangeable K, potassium supply power, intense cropping ResumoAs alterações nas formas químicas de potássio (K) em solos cultivados e submetidos à fertilização potássica, ainda, são pouco conhecidas para os solos do Estado do Paraná. Neste estudo, os efeitos de cultivos sucessivos e da fertilização potássica nas alterações das formas de K foram estudados em solos com diferentes características físico-químicas do Estado do Paraná. Amostras de 12 solos coletadas da camada de 0-20 cm de profundidade, foram submetidas à adição ou não de fertilizante potássico e a seis cultivos sucessivos de plantas (soja, milheto, trigo, feijão, soja e milho). Em todos os cultivos as plantas foram cultivadas por um período de 40 dias. Após o segundo, quarto e sexto cultivo foram coletadas

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Phosphorus and potassium balance in soil under crop rotation and fertilization

Cited by 11 publications

References 24 publications

White Lupin (Lupinus albus L. cv. Amiga) Increases Solubility of Minjingu Phosphate Rock, Phosphorus Balances and Maize Yields in Njoro Kenya

White Lupin (Lupinus albus L. cv. Amiga) Increases Solubility of Minjingu Phosphate Rock, Phosphorus Balances and Maize Yields in Njoro Kenya

Influence of Phosphorus Application With Avail on Following Soybeans in Southeastern Coastal Plains

Changes in potassium pools in Paraná soils under successive cropping and potassium fertilization

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