Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, China
Phosphorus (P) is an important macronutrient for plant but can also cause potential environmental risk. In this paper, we studied the long-term fertilizer experiment (started 1980) to assess the soil P dynamic, balance, critical P value and the crop yield response in Taihu Lake region, China. To avo...
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| Format: | Article |
| Language: | English |
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Elsevier
2015-12-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311915611832 |
| _version_ | 1818641920971243520 |
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| author | Lin-lin SHI Ming-xing SHEN Chang-yin LU Hai-hou WANG Xin-wei ZHOU Mei-juan JIN Tong-dong WU |
| author_facet | Lin-lin SHI Ming-xing SHEN Chang-yin LU Hai-hou WANG Xin-wei ZHOU Mei-juan JIN Tong-dong WU |
| author_sort | Lin-lin SHI |
| collection | DOAJ |
| description | Phosphorus (P) is an important macronutrient for plant but can also cause potential environmental risk. In this paper, we studied the long-term fertilizer experiment (started 1980) to assess the soil P dynamic, balance, critical P value and the crop yield response in Taihu Lake region, China. To avoid the effect of nitrogen (N) and potassium (K), only the following treatments were chosen for subsequent discussion, including: C0 (control treatment without any fertilizer or organic manure), CNK treatment (mineral N and K only), CNPK (balanced fertilization with mineral N, P and K), MNK (integrated organic manure and mineral N and K), and MNPK (organic manure plus balanced fertilization). The results revealed that the response of wheat yield was more sensitive than rice, and no significant differences of crop yield had been detected among MNK, CNPK and MNPK until 2013. Dynamic and balance of soil total P (TP) and Olsen-P showed soil TP pool was enlarged significantly over consistent fertilization. However, the diminishing marginal utility of soil Olsen-P was also found, indicating that high-level P application in the present condition could not increase soil Olsen-P contents anymore. Linear-linear and Mitscherlich models were used to estimate the critical value of Olsen-P for crops. The average critical P value for rice and wheat was 3.40 and 4.08 mg kg−1, respectively. The smaller critical P value than in uplands indicated a stronger ability of P supply for crops in this paddy soil. We concluded that no more mineral P should be applied in rice-wheat system in Taihu Lake region if soil Olsen-P is higher than the critical P value. The agricultural technique and management referring to activate the plant-available P pool are also considerable, such as integrated use of low-P organic manure with mineral N and K. |
| first_indexed | 2024-12-16T23:34:50Z |
| format | Article |
| id | doaj.art-a34e29f33cd041b1bf43fc47f4e8d88c |
| institution | Directory Open Access Journal |
| issn | 2095-3119 |
| language | English |
| last_indexed | 2024-12-16T23:34:50Z |
| publishDate | 2015-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj.art-a34e29f33cd041b1bf43fc47f4e8d88c2022-12-21T22:11:46ZengElsevierJournal of Integrative Agriculture2095-31192015-12-01141224462455Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, ChinaLin-lin SHI0Ming-xing SHEN1Chang-yin LU2Hai-hou WANG3Xin-wei ZHOU4Mei-juan JIN5Tong-dong WU6Institute of Agricultural Science in Taihu Lake Region, Suzhou 215155, P.R.China; Key Scientific Observation & Experiment Station for Paddy Field Eco-environment, Ministry of Agriculture, Suzhou 215155, P.R.ChinaInstitute of Agricultural Science in Taihu Lake Region, Suzhou 215155, P.R.China; Key Scientific Observation & Experiment Station for Paddy Field Eco-environment, Ministry of Agriculture, Suzhou 215155, P.R.China; Correspondence SHEN Ming-xing, Tel: +86-512-65380551, Fax: +86-512-65385097Institute of Agricultural Science in Taihu Lake Region, Suzhou 215155, P.R.China; Key Scientific Observation & Experiment Station for Paddy Field Eco-environment, Ministry of Agriculture, Suzhou 215155, P.R.ChinaInstitute of Agricultural Science in Taihu Lake Region, Suzhou 215155, P.R.China; Key Scientific Observation & Experiment Station for Paddy Field Eco-environment, Ministry of Agriculture, Suzhou 215155, P.R.ChinaInstitute of Agricultural Science in Taihu Lake Region, Suzhou 215155, P.R.China; Key Scientific Observation & Experiment Station for Paddy Field Eco-environment, Ministry of Agriculture, Suzhou 215155, P.R.ChinaInstitute of Agricultural Science in Taihu Lake Region, Suzhou 215155, P.R.China; Key Scientific Observation & Experiment Station for Paddy Field Eco-environment, Ministry of Agriculture, Suzhou 215155, P.R.ChinaInstitute of Agricultural Science in Taihu Lake Region, Suzhou 215155, P.R.China; Key Scientific Observation & Experiment Station for Paddy Field Eco-environment, Ministry of Agriculture, Suzhou 215155, P.R.ChinaPhosphorus (P) is an important macronutrient for plant but can also cause potential environmental risk. In this paper, we studied the long-term fertilizer experiment (started 1980) to assess the soil P dynamic, balance, critical P value and the crop yield response in Taihu Lake region, China. To avoid the effect of nitrogen (N) and potassium (K), only the following treatments were chosen for subsequent discussion, including: C0 (control treatment without any fertilizer or organic manure), CNK treatment (mineral N and K only), CNPK (balanced fertilization with mineral N, P and K), MNK (integrated organic manure and mineral N and K), and MNPK (organic manure plus balanced fertilization). The results revealed that the response of wheat yield was more sensitive than rice, and no significant differences of crop yield had been detected among MNK, CNPK and MNPK until 2013. Dynamic and balance of soil total P (TP) and Olsen-P showed soil TP pool was enlarged significantly over consistent fertilization. However, the diminishing marginal utility of soil Olsen-P was also found, indicating that high-level P application in the present condition could not increase soil Olsen-P contents anymore. Linear-linear and Mitscherlich models were used to estimate the critical value of Olsen-P for crops. The average critical P value for rice and wheat was 3.40 and 4.08 mg kg−1, respectively. The smaller critical P value than in uplands indicated a stronger ability of P supply for crops in this paddy soil. We concluded that no more mineral P should be applied in rice-wheat system in Taihu Lake region if soil Olsen-P is higher than the critical P value. The agricultural technique and management referring to activate the plant-available P pool are also considerable, such as integrated use of low-P organic manure with mineral N and K.http://www.sciencedirect.com/science/article/pii/S2095311915611832long-term fertilizationsoil P dynamicsoil P balancecrop yieldcritical P value |
| spellingShingle | Lin-lin SHI Ming-xing SHEN Chang-yin LU Hai-hou WANG Xin-wei ZHOU Mei-juan JIN Tong-dong WU Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, China Journal of Integrative Agriculture long-term fertilization soil P dynamic soil P balance crop yield critical P value |
| title | Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, China |
| title_full | Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, China |
| title_fullStr | Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, China |
| title_full_unstemmed | Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, China |
| title_short | Soil phosphorus dynamic, balance and critical P values in long-term fertilization experiment in Taihu Lake region, China |
| title_sort | soil phosphorus dynamic balance and critical p values in long term fertilization experiment in taihu lake region china |
| topic | long-term fertilization soil P dynamic soil P balance crop yield critical P value |
| url | http://www.sciencedirect.com/science/article/pii/S2095311915611832 |
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