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How much nitrogen is in the soil

How much nitrogen is in the soil, Total:7 items.

In the international standard classification, How much nitrogen is in the soil involves: Soil quality. Pedology.

Indonesia Standards, How much nitrogen is in the soil

• SNI 13-4721-1998 Methods for determination of total nitrogen content in soils

RU-GOST R, How much nitrogen is in the soil

• GOST R 53219-2008 Soil quality. Determination of nitrogen in air-dry soils using calcium chloride solution

VN-TCVN, How much nitrogen is in the soil

• TCVN 7373-2004 Soils quality.Index values of total nitrogen content in the soils of Vietnam
• TCVN 6643-2000 Soil quality.Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant

Association Francaise de Normalisation, How much nitrogen is in the soil

• NF X31-115:2001 Soil quality - Sampling and storage of soil samples in view of determination of mineral nitrogen on fresh soil.

German Institute for Standardization, How much nitrogen is in the soil

• DIN ISO 14255:1998 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant (ISO 14255:1998)

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, How much nitrogen is in the soil

• GB/T 42490-2023 Soil quality Determination of organic carbon content and carbon isotope ratio, total nitrogen content and nitrogen isotope ratio in soil and biological samples Stable isotope ratio mass spectrometry

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