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Thereby soil bulk density is always less than soil particle density and is a good indicator of soil compaction. [47] The soil bulk density of cultivated loam is about 1.1 to 1.4 g/cm 3 (for comparison water is 1.0 g/cm 3). [48] Contrary to particle density, soil bulk density is highly variable for a given soil, with a strong causal relationship ...
The density of quartz is around 2.65 g/cm 3 but the (dry) bulk density of a mineral soil is normally about half that density, between 1.0 and 1.6 g/cm 3. In contrast, soils rich in soil organic carbon and some friable clays tend to have lower bulk densities ( <1.0 g/cm 3 ) due to a combination of the low-density of the organic materials ...
The Department of Agriculture (DOA) functions under the Ministry of Agriculture of Government of Sri Lanka is one of the largest government departments with a high profile community of agricultural scientists and a network of institutions covering different agro ecological regions island wide. DOA focuses on maintaining and increasing ...
Soil bulk density, when determined at standardized moisture conditions, is an estimate of soil compaction. [60] Soil porosity consists of the void part of the soil volume and is occupied by gases or water. Soil consistency is the ability of soil materials to stick together. Soil temperature and colour are self-defining.
The lowland rain forests accounts for 2.14 percent of Sri Lanka's land area. [3] This ecoregion is the home of the jungle shrew, a small endemic mammal of Sri Lanka. [4] Sri Lanka has the highest density of amphibian species worldwide. [2] Many of these, including 250 species of tree frogs, live in these rain forests.
According to the U.N. FAO, 28.8% of Sri Lanka was forested in 2010 (about 1,86 million hectares). In 1995, it was 1.94 million hectares or 32.2% [11] of the land area that was classified as dense forests while the balance 0.47 million hectares or 7% the land area classified as open forests.
It is one of the main sources of foreign exchange for Sri Lanka and accounts for 2% of GDP, generating roughly $700 million annually to the economy of Sri Lanka. It employs, directly or indirectly over 1 million people, and in 1995 directly employed 215,338 on tea plantations and estates. Sri Lanka is the world's fourth largest producer of tea.
Sri Lanka Freedom Party: 27 July 2005: Minister of Agriculture [35] Maithripala Sirisena: Sri Lanka Freedom Party: 23 November 2005: Mahinda Rajapaksa: Minister of Agriculture, Environment, Irrigation and Mahaweli Development [36] 28 January 2007: Minister of Agricultural Development and Agrarian Services [37] [38] [39] Mahinda Yapa Abeywardena ...