Research Article
Ammonia Volatilization from Urea-Application Influenced Germination and Early Seedling Growth of Dry Direct-Seeded Rice
Table 2
Ammonia volatilization from three different soils with ammonium sulfate, urea, and urea + NBPT in comparison with zero N input (control) in Petri dish incubation experiment.
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Within a row, means followed by different letters are significantly different at 0.05 probability level according to Least Significant Difference (LSD) test. aAmmonia volatilization was determined at four days after incubation. bThe rate of ammonium sulfate and urea was 0.15 g N per Petri dish. cThe rate of NBPT was 1.5 mg per Petri dish. |