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

Nagumo, Toshiyuki; Tajima, Shoko; Chikushi, Sanae; Yamashita, Ayako

doi:10.1626/pps.16.69

Cited by 29 publications

(16 citation statements)

References 19 publications

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“…The P inputs from irrigation as well as dry and wet depositions and the P output from the P loss were neglected, as in other studies [4,18]. The P budget is an important factor for evaluating the P management in agroecosystems, and it affects the soil P changes over time [23,24]. At a global scale, P deficits cover 30% while P surplus covers 70% of the total cropland [3].…”

Section: Soil P Budget and Crop Yieldmentioning

confidence: 99%

The response of soil Olsen-P to the P budgets of three typical cropland soil types under long-term fertilization

Zhang

Wang

Wu³

et al. 2020

PLoS ONE

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The Olsen phosphorus (Olsen-P) concentration of soil is generally a good indicator for estimating the bioavailability of P and environmental risk in soils. To maintain soil Olsen-P at adequate levels for crop growth and environmental sustainability, the relationship between soil Olsen-P and the P budget (the P input minus the output) as well as the variations of soil Olsen-P and P budget were investigated from three long-term (22 years) experiments in China. Five treatments were selected: (1) unfertilized control (CK); (2) nitrogen and potassium (NK); (3) nitrogen, phosphorous, and potassium (NPK); (4) nitrogen, phosphorous, potassium and straw; (5) nitrogen, phosphorous, potassium and manure. The results showed that without P fertilizers (CK, NK), there was a soil P deficit of 75-640 kg ha-1 , and the lowest P deficit (mean of CK and NK) was in Eutric Cambisol. Soil Olsen-P decreased by 0.11-0.39 mg kg-1 year-1 in the order of Luvic Phaeozems > Eutric Cambisol > Calcaric Cambisol. Soil Olsen-P and the P deficit had a significantly (P<0.01) positive linear relationship. For every 100 kg of P ha-1 of deficit, soil Olsen-P decreased by 0.44-9.19 mg kg-1 in the order of Eutric Cambisol > Luvic Phaeozems > Calcaric Cambisol. Under the P fertilizer treatments (NPK, NPKS, and NPKM), soil Olsen-P showed an obvious surplus (except the NPK and NPKS in Luvic Phaeozems) of 122-2190 kg ha-1 , and the largest P surplus was found under the NPKM treatment at each site. The relation between soil Olsen-P and the experimental years could be simulated using quadratic equation of one unknown in Calcaric Cambisol for the lower P input after 14 years of fertilization. And soil Olsen-P increased by 1.30-7.69 mg kg-1 year-1 in the order of Luvic Phaeozems > Eutric Cambisol. The relation between soil Olsen-P and the P surplus could be simulated by a simple linear equation except under NPK and NPKS in Luvic Phaeozems. With 100 kg ha-1 P surplus, soil Olsen-P increased by 3.24-7.27 mg kg-1 in the order of Calcaric Cambisol (6.42 mg kg-1) > Eutric Cambisol (3.24 mg kg-1). In addition, the change in soil Olsen-P with a 100 kg P ha-1 surplus (soil Olsen-P efficiency) was

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Section: Soil P Budget and Crop Yieldmentioning

confidence: 99%

The response of soil Olsen-P to the P budgets of three typical cropland soil types under long-term fertilization

Zhang

Wang

Wu³

et al. 2020

PLoS ONE

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“…The reason is a significant amount of phosphorous applied accumulates in the soil [24], which is a major loss during phosphorous utilization [9]. The variation in the non-food sector is around 10%, and this is because the phosphate rock exports of 41.4kt are also included in the calculation, but are not sourced from agricultural land.…”

Section: Resultsmentioning

confidence: 99%

“…It indicates that 5291 kt phosphorous is stabilized in the agricultural land, and this is nearly 43% of the total fertilizer applied (both chemical fertilizer and animal manure). Agricultural land took up 56% of the total national land area in 2012 [24], which suggests an average phosphorous input of 26 kg P/ha and average phosphorous output of 16 kg P/ha. Thus, the phosphorous utilization efficiency in agriculture is 62%.…”

Section: Resultsmentioning

confidence: 99%

Substance Flow Analysis of Phosphorous in China

Li¹,

Boiarkina²,

Young³

et al. 2015

IJESD

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Phosphorous is an essential natural resource that is projected to run out rapidly. Environmental pollution and resource scarcity pressures require the development of a phosphorous management system in China. One of the fundamental steps to achieve this is to understand the way that phosphorous flows throughout the country. It helps to find out the current phosphorous utilization conditions and provide reliable evidence for both technology and strategy development. Based on these reasons, substance flow analysis of phosphorous was thus conducted to investigate phosphorous flow types and quantify stream values for China. The result indicates that phosphate rock resources in china will run out within 35 years at the current consumption rate, which indicates the urgency of phosphorous recovery. The substance flow analysis will also provide a guide for efficient recovery schemes design in future work. Overall, with a phosphorous crisis approaching in China, it is suggested that work be carried out into phosphorous recovery techniques and management policies.

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“…Interaksi bahan organik dengan pupuk kimia dapat meretensi P di dalam tanah, karena hampir 80% pupuk yang diberikan ke dalam tanah akan terfiksasi oleh liat dan oksida Fe dan Al [29]. Hasil penelitian Nagumo et al [30] menunjukkan bahwa kombinasi kompos-Biochar dengan pupuk sintetik tidak hanya mampu meretensi hara, tetapi juga meningkatkan penyerapan P di dalam tanaman.…”

Section: Hasil Dan Pembahasan Kandungan C-organik Tanahunclassified

“…Semakin besar kepadatan perakaran tanaman maka akses tanaman terhadap area difusi fosfat menjadi semakin luas. Sejalan dengan pernyataan Czarnecki et al [29] bahwa tingkat serapan P tanaman berbanding lurus dengan pertumbuhan perakaran tanaman. Kondisi lahan yang tergenang air juga dapat memberi kontribusi peningkatan ketersediaan fosfat tanah, karena mendukung terjadinya reduksi feri phosphate menjadi bentuk fero phosphate melalui proses hidrolisis senyawa fosfat di dalamnya [33].…”

Section: Hasil Dan Pembahasan Kandungan C-organik Tanahunclassified

Kontribusi Kompos Jerami-Biochar Dalam Peningkatan P-Tersedia, Jumlah Populasi BPF dan Hasil Padi Sawah

Noviani¹,

Slamet²,

Citraresmini³

2018

J. Ilmiah Aplikasi Isotop dan Radiasi

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ABSTRAKBahan organik telah terbukti berperan efektif dalam memulihkan kesuburan tanah. Indikator kesuburan tanah ini antara lain terletak pada kandungan C-organik tanah, jumlah populasi mikroba tanah, kandungan hara tersedia dan hasil tanaman. Penelitian ini dilakukan dengan tujuan mengetahui pengaruh dosis aplikasi kompos jerami-Biochar yang berinteraksi dengan pupuk kimia NPK, terhadap kandungan Corganik tanah, jumlah populasi Bakteri Pelarut Fosfat (BPF), ketersediaan P dan hasil tanaman padi sawah. Sasaran penelitian ini adalah mendapatkan interaksi perlakuan yang mampu memperbaiki kesuburan tanah, meningkatkan ketersediaan hara sehingga mendorong produksi tanaman lebih optimal, dan pemakaian pupuk NPK yang efisien. Percobaan dilakukan pada bulan April sampai dengan Agustus 2014 di kebun percobaan SPLPP Fakultas Pertanian UNPAD, berlokasi di Ciparay Kabupaten Bandung Jawa Barat. Perlakuan yang diterapkan adalah dosis kompos jerami-Biochar dalam 5 taraf dosis (0; 1; 2; 3; 4 t ha -1 ) dan dosis pupuk NPK dalam 4 taraf dosis yang semakin menurun dari dosis rekomendasi (100%, 80%; 60%; 40%), dengan menerapkan disain percobaan RAK pola faktorial. Hasil percobaan menunjukkan dosis kompos jerami-Biochar 2 t ha -1 mampu menyebabkan perbedaan respons yang signifikan dan tercapainya hasil tertinggi pada parameter respons kandungan C-organik tanah, jumlah populasi BPF, ketersediaan P, dan berat kering gabah. Interaksi 2 t ha -1 kompos jerami-Biochar dengan pupuk NPK mampu menurunkan pemakaian pupuk hingga 40%, pada hasil berat kering gabah tertinggi.Kata kunci : BPF, biochar, fosfat, kompos jerami, padi ABSTRACTOrganic matter has been shown to play an effective role in restoring soil fertility. These soil fertility indicators include, among others, the soil C-organic content, the population of soil microbes, the nutrient availability and plant yield. This study conducted with the purpose of assessing the impact of rice straw compost-Biochar and NPK chemical fertilizer application on soil C-organic content, phosphate solubilizer bacteria (PSB) population, P availability and crop production. The objective of this research is to get treatment interaction which is able to improve soil fertility, increase soil nutrient availability to encourage more optimal crop production, and provide the efficient use of NPK fertilizer. The experiment conducted from April to August 2014 in SPLPP experimental station of Agriculture Faculty UNPAD, located in Ciparay-Bandung regency West Java. Treatment applied is rice straw compost -Biochar in 5 level of doses (0; 1; 2; 3; 4 t ha -1 ) and NPK fertilizer in 4 levels of doses decreasing from recommendation dose (100%, 80%; 60 %; 40%), by applying the Complete Randomized Block design in the factorial pattern. The experimental results showed that 2 ts ha -1 of rice straw compost-Biochar was able to induce significant different responses and the highest soil C-organic content, number of PSB population, P availability, and dry weight of grain. Interaction of 2 ts ha -1 rice straw compost -Biochar...

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

Cited by 29 publications

References 19 publications

The response of soil Olsen-P to the P budgets of three typical cropland soil types under long-term fertilization

The response of soil Olsen-P to the P budgets of three typical cropland soil types under long-term fertilization

Substance Flow Analysis of Phosphorous in China

Kontribusi Kompos Jerami-Biochar Dalam Peningkatan P-Tersedia, Jumlah Populasi BPF dan Hasil Padi Sawah

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