|
John Innes compost is a set of four formulae for growing medium, developed at the former John Innes Horticultural Institution (JIHI), now the John Innes Centre, in the 1930s and released into the public domain. The scientists who developed the formulae were William Lawrence and John Newell.〔(History of the John Innes Compost )〕 The director at the time was Daniel Hall〔(A History of the John Innes Centre )〕 Lawrence started to investigate the whole procedure of making seed and potting composts following a major disaster in 1933 with ''Primula sinensis'' seedlings, an important experimental plant for JIHI geneticists. After hundreds of trials, Lawrence and Newell arrived at two basic composts, a base fertiliser for use in the potting compost and a standard feed. The formulae of these as yet unnamed composts were published in 1938.〔(John Innes Centre historical timeline )〕 These composts originally provided a sterile and well balanced growing medium for the experimental plant material needed at the institute. The Institution made the formulae generally available, but never manufactured the composts for sale nor benefited financially from their production.〔(John Innes, more than just a compost )〕 The name ‘John Innes Compost’ was allotted in 1938–39; the horticultural retail trade in the composts made ‘John Innes’ a household name, but JIHI received no financial benefit from them.〔 The formulae contain loam, peat, sand or grit, and fertiliser in varying ratios for specific purposes. The composts are "soil-based". ==External links== *(John Innes Centre information on John Innes Compost ) *(John Innes Manufacturers' Association ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「John Innes compost」の詳細全文を読む スポンサード リンク
|