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Humic substances account for 50 – 90% of cation exchange capacity in soils. "Humic substances" is an umbrella term covering humic acid, fulvic acid and humin, which differ in solubility. By definition, humic acid (HA) is soluble in water at neutral and alkaline pH, but insoluble at acidic pH < 2. Fulvic acid (FA) is soluble in water at any pH.
Apparently "humic substance" is a relatively rarely used term and concept, which refers to compounds present in untreated humus; whereas "humic acid", "fulvic acid" and "humin" are not "humic substances", but compounds derived from humus by chemical treatment. While "humic acid" and "fulvic acid" have indefinite chemical composition, they are ...
The Daily FT or the Daily Financial Times is a daily English-language newspaper published in Colombo, Sri Lanka, by Wijeya Newspapers. Its sister newspaper The Daily Mirror (Sri Lanka) and its Sunday counterpart Sunday Times are among the important newspapers in Sri Lanka. [1]
Company Name Symbol C M Holdings: CSE: COLO.N0000: C T Holdings: CSE: CTHR.N0000: C T Land Development: CSE: CTLD.N0000: C. W. Mackie: CSE: CWM.N0000: Capital ...
Rubber production in Sri Lanka commenced in 1876, with the planting of 1,919 rubber seedlings at the Henarathgoda Botanical Gardens in Gampaha. [1] The total extent under rubber in 1890 was around 50 ha (120 acres) and in the early 1900s it increased to around 10,000 ha (25,000 acres).
The State Pharmaceuticals Corporation (SPC) is a state-owned enterprise with its headquarters in Colombo, Sri Lanka.It is the largest supplier of drugs in the country, and is tasked with providing quality-assured health care items that are safe and effective, at an affordable price, while educating the public on the rational use of drugs.
John Keells Holdings PLC (JKH) is a Sri Lankan multinational conglomerate company. It has business interests in hotels and resorts management, port, marine fuel and logistics services, IT services, manufacturing of food and beverages, supermarkets, tea, stock broking, life insurance, banking, and real estate.
In 2000, only 25% of the households in Sri Lanka got their water through pipes. Even the water that does come through the pipe from local suppliers is not monitored efficiently. This is why a part of the population does not get clean drinking water. [2] Sri Lanka's wastewater management requires a lot of work.