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Mineralization and Chemical Properties Changes in Soil Amended with Azolla |
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| รหัสดีโอไอ | |
| Creator | Sirilak Kaewsuralikhit |
| Title | Mineralization and Chemical Properties Changes in Soil Amended with Azolla |
| Contributor | Patcharin Namwong, Praphai Thongra-ar, Nisarat Thaweenut, Kanda Chatchaisiri |
| Publisher | Department of Agriculture |
| Publication Year | 2563 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 38 |
| Journal No. | 2 |
| Page no. | 139-149 |
| Keyword | mineralization, ammonium, nitrate, Azolla |
| URL Website | http://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | Azolla is a kind of bio-fertilizer that can be used as a nitrogen source for plants. It also contained high amount of other macro nutrients, which when decomposed will release them to the soils. Azolla can be used in both fresh and dried form, This research was tostudy the mineralization of plant nutrients and the change in chemical properties in soilamended with fresh and dried Azolla. Fresh and dried Azolla were incubated in soil (PakChong series) at the temperature of 30 ?oC, water holding capacity of 60% for 154 days.Results revealed that in soil amended with fresh Azolla, amount of ammonium-N washigher than nitrate-N during the first 35 days of incubation period. After that, amount ofammonium-N declined, and by the end of the study time all was mineralized to nitrate-N.In comparison, the amount of ammonium-N in the soil amended with dried Azolla washigher than nitrate-N only during the first 7 days then declined, thus enabled nitrate-Naccumulation till the end of the study. Mineralization of phosphorus and potassium occurredin the similar pattern as that of nitrogen. The amount of available phosphorus andexchangeable potassium was found higher in the soil amended with dried Azolla than thatamended with the fresh one. Mineralization of phosphorus and potassium occurred in morethan 150 days of the study. We also found that soil amended with both fresh and driedAzolla had slightly lower pH but higher organic matter accumulation when compared withthe unamended soil. However, the soil amended with dried Azolla had higher soil EC thanthat amended with fresh one. |
