Results 261 to 270 of about 175,815 (312)

Study on quantitative retrieval of soil nutrients

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
Soil spectral reflectance is affected by soil physicochemical characteristics and the physical basis of the soil remote sensing. Generally, the impact factors of the soil spectral features include water content, organic matter content, iron oxides content, physical composition and the parent material.
Heng Dong, Chao Chen, Jinliang Wang 0004, Qiming Qin, Hongbo Jiang 0001, Ning Zhang, Mingchao Liu   +6 more
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Soil nutrient availability

1989
Many methods have been developed for assessing the availability of soil nutrients, but for a variety of reasons none are universally applicable. In this chapter, we discuss the conceptual basis for measuring nutrient availability and describe the strengths and limitations of some of the methods for assessing nonagricultural soils.
Dan Binkley, Peter Vitousek
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Soil microbes and the availability of soil nutrients

Acta Physiologiae Plantarum, 2013
It is likely to provide plants with their necessary nutrients using chemical and biological fertilization. Although chemical fertilization is a quick method, it is not recommendable economically and environmentally, especially if overused. Biological fertilization is the use of soil microbes including arbuscular mycorrhizal fungi and plant growth ...
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The Availability of Soil Nutrients

1964
In the foregoing discussion of the physical and chemical properties of soil attention has been drawn to the important part played by clay minerals and organic matter, with its end product humus, in regulating soil processes. In the course of this exposition nutritive elements have been referred to in a general way.
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Nutrient cycling in soils

2018
Sustainable agricultural systems must enable profitable production of sufficient high-quality crops to meet human demands while simultaneously minimising off-site impacts. Though simple chemical equilibrium plays a part, nutrient cycling processes in soil are largely the outcome of biochemical processes resulting from the activity and interactions of a
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Soil carbon dynamics and nutrient cycling.

2014
The quantity of organic carbon in soil and the quantity and type of organic inputs have profound impacts on the dynamics of nutrients. Soil organic matter itself represents a large reservoir of nutrients that are released gradually through the action of soil fauna and microorganisms: this is especially important for the supply of N, P and S to plants ...
Powlson, David S., Cai, Zucong, Lemanceau, Philippe   +2 more
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Nutrient Budget and Soil Nutrient Status in Greenhouse System

Agricultural Sciences in China, 2010
This paper is based on nutrient budget and its effects on soil nutrient status in typical greenhouse system in China to provide a basis for raising the utilization rate of fertilizers and maintaining the sustainable development of agriculture in the greenhouse.
Hai-ying YU, Ting-xuan LI, Xi-zhou ZHANG
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Nutrient Management of Soil Grown Crops

2009
The management of the fertilization of soil grown crops in greenhouses can be distinguished in the addition of fertilizers before cultivation, the base dressing and those added during the cultivations period of the crops, the top dressing. The growing period of the crops in greenhouse production varies strongly.
Sonneveld, C., Voogt, W.
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Soil Nutrient—Vegetation Relationships in the Eden Area, N.S.W: I. Soil Nutrient Survey

Australian Forestry, 1978
SUMMARY The soils of the six main geological types in the forests of the Eden area were sampled at three depths and analysed for pH, organic matter content, nitrogen, phosphorus and exchangeable calcium, magnesium, potassium, sodium and aluminium.
JOSEPH KELLY, JOHN TURNER
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Extraction and Integration of Different Soil Nutrient Grading Systems for Soil Nutrient Mapping

2016
These works present a model to integrate and harmonize different nutrient grading indexes originating from various existing soil polygon maps. The soil nutrient grading indexes might be different from one national soil survey to another and even be different for the different counties in the same national soil survey in China. Soil nutrients mapping in
Shuxia Wu, Weili Zhang, Aiguo Xu, Qiuliang Lei   +3 more
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