Phosphorus availability to rice (Oriza sativa L.)–wheat (Triticum estivum L.) in a Vertisol after eight years of inorganic and organic fertilizer additions

Singh, Muneshwar; Reddy, K. Sammi; Singh, V. P.; Rupa, T. R.

doi:10.1016/j.biortech.2006.02.045

Cited by 57 publications

(36 citation statements)

References 19 publications

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“…As a result, for all studied soils, the P contents in different P o fractions increased during soil incubation, which suggests the existence of an organic phosphorus synthesis mechanism linked to manure application. A similar result was also found by Singh et al (2007).…”

Section: Organic Phosphorus (P O ) Fractionssupporting

confidence: 79%

“…The Ca-P, Fe-P, Al-P and organic P fractions are considered to be relatively active depending on the actual properties of the soil (Jalali and Ranjbar, 2010). In addition, it has been reported that P application in excess to what is taken up by the crop remained in the soil, and its transformation into organic or inorganic forms depends on the management practices of other nutrients and the inherent soil conditions (Singh, 2007). Information on the chemical forms of P is fundamental to understanding P dynamics and interactions in paddy soils, which is necessary for management of P. However, little is known about the cycling of P in soil, including the fate of P in manure applied to paddy soil.…”

Section: Introductionmentioning

confidence: 99%

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Transformation of phosphorus fractions in paddy soil amended with pig manure

Yin

Liang

2013

J. Soil Sci. Plant Nutr.

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This paper examines phosphorus forms following application of organic fertilizer. Dynamic changes in the phosphorus fraction content were simulated by the waterlogged incubation method. This study was carried out using comparison tests between sterilized and non-sterilized treatments to analyze the effect of organic fertilizer on phosphorus form transformation. The experimental results showed that fertilization of paddy soil could significantly increase the content of the phosphorus fraction (p<0.05). Furthermore, the organic phosphorus content increased during incubation. The levels of organic phosphorus in the non-sterilized treatments were higher than in the sterilized treatments. However, the variation of the inorganic phosphorus content was contradictory. A significant correlation (r=-0.484, p≤0.01) was observed between O-P and highly resistant organic phosphorus, as well as among Al-P, Ca-P, moderately labile organic phosphorus and moderately resistant organic phosphorus. Therefore, it is concluded that applying organic fertilizer can increase the content of the phosphorus fractions of paddy soil. With microorganisms present, Al-P and Ca-P can be transformed into moderately labile organic phosphorus and moderately resistant organic phosphorus, and O-P can be transformed into highly resistant organic phosphorus.

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Section: Organic Phosphorus (P O ) Fractionssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Transformation of phosphorus fractions in paddy soil amended with pig manure

Yin

Liang

2013

J. Soil Sci. Plant Nutr.

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“…Nagumo et al (2009) observed a significant correlation between the amount of nitrogen uptake and the rice yield in our 6 plots: the order of nitrogen uptake rate was T1 >T4, T5 >T2, T3>T6 plot, and it agreed with the order of the rice yield. Increasing rice yield derived from higher nitrogen input enhanced P uptake through better crop growth (Singh et al, 2007). Dorbermann et al (1996) also indicated that the rice P uptake could vary according to the rice yield, which was largely influenced by nitrogen availability.…”

Section: Discussionmentioning

confidence: 99%

Phosphorus Balance and Soil Phosphorus Status in Paddy Rice Fields with Various Fertilizer Practices

Nagumo

Tajima

Chikushi

et al. 2013

Plant Production Science

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Excess phosphorus (P) has accumulated in Japanese paddy soils, due to fertilizer P inputs over crop requirement for several decades, and improvement of the excess of P is necessary in view of environmental conservation. This study aimed to evaluate the input/output balance of P related to soil P status in paddy rice systems, and to obtain a practical indication. , indicating no response to the P input. This was attributed to a large amount of plant-available Bray-and Truog-P in our soils. In our fields, paddy rice could be cultivated with no P-containing fertilizer or amendment. As a result, increase in the P input led to an increase in partial P balance (PPB). Cumulative increase in PPB resulted in the increase in soil total P, whereas cumulative decrease of PPB tended to decrease it. Excess accumulation of the soil P results in a loss of P into the environment. We concluded that P fertilization should be restricted to 20 kg ha -1 yr -1 (corresponding to 46 kg ha -1 yr -1 as P 2 O 5 ), based on evenly balanced P input with the rice P uptake. It is also important to include all of the P-containing fertilizers and amendments when determining the amount of application.

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“…Similarly, Kundu et al (2007b) and Lv et al (2011) also reported that available P content in long-term unfertilized soil was decreased. However, Singh et al (2007) observed that available P content in 8 yr unfertilized Vertisol in India was increased. The available K content was significantly higher in the compost treatment than in the chemical fertilizer and control treatment and initial values, and Liu et al (2010) reported consistent with results.…”

Section: Soil Nutrients Soil Ph and Bulk Densitymentioning

confidence: 96%

Soil carbon and nitrogen sequestration and crop growth as influenced by long-term application of effective microorganism compost

Xia

Chen

et al. 2018

Chil. j. agric. res.

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Long-term excessive application of inorganic fertilizers not only wastes resources but also contaminates the environment. The use of natural substitutes could overcome these drawbacks. We hypothesize that organic fertilizers could increase soil C, N sequestration and improve soil fertility more effectively than inorganic fertilizers, and that in particular effective microorganism (EM) could improve the effects of traditional compost. So, a long-term field experiment regarding improvement of soil fertility, protecting soil environment, and increasing of maize and wheat yield was conducted at China Agricultural University's Qu-Zhou experiment station since 1993. Field experiment included EM compost treatment, traditional compost treatment, chemical fertilizer treatment, and unfertilized treatment. Soil organic C (SOC), total N, nutrient concentrations, pH, bulk density, and crop yields were determined. The results revealed that long-term repeated application of EM compost promoted soil C and N sequestration, increased soil nutrient contents, decreased soil pH and bulk density, enhanced crop yields in contrast to chemical fertilizer and control treatment. Soil organic C stocks (0-20 cm) were increased by 87.32%, 81.51%, 33.05%, 25.20% and soil total N stocks were increased by 93.26%, 77.53%, 37.64%, 34.83% in contrast to initial values in EM compost, traditional compost, chemical fertilizer and control treatments, respectively. Moreover, maize grain yields in EM compost, traditional compost, and chemical fertilizer treatments were significantly increased by 163.49%, 128.34%, 62.36% compared with control treatment, respectively. The effect of increased soil C and N sequestration, improving soil fertility and enhanced crop yields in application of compost appending EM was better than alone application of compost.

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Phosphorus availability to rice (Oriza sativa L.)–wheat (Triticum estivum L.) in a Vertisol after eight years of inorganic and organic fertilizer additions

Cited by 57 publications

References 19 publications

Transformation of phosphorus fractions in paddy soil amended with pig manure

Transformation of phosphorus fractions in paddy soil amended with pig manure

Phosphorus Balance and Soil Phosphorus Status in Paddy Rice Fields with Various Fertilizer Practices

Soil carbon and nitrogen sequestration and crop growth as influenced by long-term application of effective microorganism compost

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