Shaquilla, Putri Aurelia (2025) SOIL PHOSPHORUS STUDY ON LAND USE TYPES IN WONOSALAM DISTRICT, JOMBANG REGENCY. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Phosphorus (P) is an essential macronutrient for plant growth, where its availability in the soil is significantly influenced by land use practices. Different land use systems can alter soil chemical properties and directly impact the status of soil P. This study was conducted to analyze the effect of four distinct land use systems (monoculture, intercropping, agrosilviculture, and agrosilvopasture) on the status of soil phosphorus and its supporting chemical properties, such as pH, Cation Exchange Capacity (CEC), and C-Organic content in Wonosalam District, Jombang. Soil samples were collected through purposive random sampling from four different land use systems: monoculture, intercropping, agrosilviculture, and agrosilvopasture, each with three replications. Composite soil samples were taken from two depths, 0–30 cm and 30–60 cm. Key soil chemical properties were analyzed in the laboratory, including available P (Olsen), P-HCl 25%, pH, C-Organic, and Cation Exchange Capacity (CEC). The data were then analyzed using t-tests and linear regression to determine the differences and relationships among the variables. The results showed that the land use system had a significant effect on soil phosphorus status. The agrosilvopasture system exhibited the highest average concentration of both available phosphorus (P-available) at 11.12 mg/100g and potential phosphorus (P-HCl 25%) at 86.47 mg/100g. These values were statistically significantly higher compared to the monoculture, intercropping, and agrosilviculture systems. In contrast, the monoculture system recorded the lowest levels of P-available (3.72 mg/100g). While variations were observed in other parameters like soil pH, C-Organic, and CEC, the differences among the land use systems were not statistically significant. Regression analysis confirmed a very strong positive correlation between potential P and available P (R² = 0.7374), indicating that P reserves are a dominant factor controlling phosphorus availability at the research site.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | S Agriculture > S Agriculture (General) > S590-599.9 Soils. Soil science S Agriculture > S Agriculture (General) > S631-667 Fertilizers and Improvement of the soil |
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| Divisions: | Faculty of Agriculture > Departement of Agritechnology | ||||||||||||
| Depositing User: | Putri Aurelia Shaquilla | ||||||||||||
| Date Deposited: | 19 Sep 2025 02:16 | ||||||||||||
| Last Modified: | 19 Sep 2025 02:16 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/43808 |
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