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Fig. 5. Effect of predecomposition period of rice straw on mineral N (NH4 + NO3) dynamics in soil amended with 100 mg N kg1 and incubated at 75% field capacity moisture regime at 30°C. Values of LSD (0.05) for comparing treatment means at each sampling period are 5.94 for 10 d, 7.14 for 20 d, 5.46 for 30 d, 4.77 for 45 d and 4.25 for 60 d. Each data point represents mean of three replicates.
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