Sentence examples for nitrogen soil from inspiring English sources

High nitrogen soil fertility reduced the effect of nitrogen fertilizer on crop yield.

Low-cost individual tests for potentially mineralizable nitrogen, soil texture, wet aggregate stability, available water capacity, active carbon, and bean root bioassay.

Three variables at the local scale explain native plant cover — soil nitrogen, soil organic matter, and soil pH.

Laboratory analysis (particle size analysis, total carbon, total nitrogen, soil organic matter) was conducted at Texas Tech University, USA.

On the basis of agricultural statistics, survey questionnaires and experimental data, the nitrogen soil surface balance (N-SSB) has been established at the scale of a small 104-km2 caThement (The Orgeval sub-basin), representative of the intensive cash crop farming in the Seine basin.

The δ15NNO3 and δ18ONO3 values indicated that the dominant NO3− sources in surface water were soil nitrogen (soil N) and chemical fertilizers, while the main NO3− sources in groundwater were soil N from the forest, chemical fertilizers and manure in the tea garden, domestic sewage from the small, old residential area in the forest as well as urban areas.

Soil organic matter (SOM) fractions, particulate organic matter (POM), POM-carbon, POM-nitrogen, soil nutrient status and underlying soil characteristics were quantified on the 14th year of a gliricidia/maize intercrop establish in 1991 on a Ferric Lixisol in southern Malawi.

Tasks will include extracting available nitrogen from soils, measuring soil carbon and nitrogen cycling, and preparing samples for elemental analysis.

That nitrogen causes soil organisms to better use phosphorous in the soil, meaning less phosphorous runs into rivers and streams.

He uses it to assess how much nitrogen the soil needs in each section of land.

Mineralizable nitrogen in soil followed the same trend.