Rice is commonly used as a staple food source for several different Asian and Latin American countries. Rice is a unique crop because unlike most crops, it grows in extremely wet conditions. Since rice is such a widely used food source, the demand is increasing exponentially. This research experiment focuses on a rice paddy field located in Gongan County, Hubei Province, China and was treated with six different treatments that consisted of different amounts of nitrogen and organic fertilizer, specifically animal manure, added to the soil. The purpose is to see the impact of additional nutrients (such as nitrogen and organic fertilizer) on a rice paddy field and how it affects the overall land management. Eighteen plots were created and two different types of soil samples were collected from each plot as they were sampled from different depths, i.e., 0-10cm and 10-20cm. The plots with the same treatment and depth were condensed into one sample, totaling twelve overall samples. Ammonium, nitrates, and total nitrogen (TN) concentrations were measured and concluded that sample four had the most nitrogen in all of these tests. Other chemical tests include total phosphorus (TP) concentration to identify additional soil chemical property differences among the samples. Soil fractionation results indicate that majority of the soil particle sizes are larger than two millimeters while moisture content reveals that plot one, the control of the experiment, lost the most water. pH results demonstrate that plot eleven has the highest pH with a water solvent while plot twelve has the highest pH with a potassium chloride solvent. However, all soils are between neutral and slightly basic concentrations. Other physical soil properties, such as organic carbon and heavy metals, will also be measured in order to comprehensively understand the impact of land management on soil quality.

Effects of organic matter and nitrogen fertilizer on rice paddy soil in Gongan County, Hubei Province

2019 Spring National Meeting

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