Proceedings of the South & East African combined agricultural, cotton, entomological and mycological conference held at Nairobi, August, 1926

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Monograph

Identifikator:: 1738588467

URN:: urn:nbn:de:zbw-retromon-115043

Document type:: Monograph

Title:: Proceedings of the South & East African combined agricultural, cotton, entomological and mycological conference held at Nairobi, August, 1926

Place of publication:: Nairobi

Publisher:: East African Standard

Year of publication:: 1926

Scope:: VI, 337 Seiten; Ill.

Digitisation:: 2020

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: Part III. Cotton

Collection:: Economics Books

: ENCLOSURE TO PART III. Subsequently a paper on the meteorological instruments required for Cotton Stations was submitted by Messrs. Nye and Ducker: this was discussed by the section, and the following was approved. : Meteorological Instruments for Cotton Stations. The list given below refers to instruments considered essential for Stations under direct European control. A few instruments are mentioned as useful but not essential, and their acquisition will be a matter whether or no, funds are avaliable, and whether the Staff of the Station 1s strong enough to use them. Soil Moisture, though not strict.y speaking a meteorological consideration, is closely bound up with such phenomena as Ramtall and Temperature, and Is considered w= suitable subject for inclusion under the above heading: — The following instruments are Attention is called to the following considered necessary. instruments, which may be iound necessary in certain circumstances. Rain Gauge. Automatic Raingauge. Hygrograph* Anemometer (Anemograph). Thermograph® Wet and Dry Bulb Thermometers Barometer (Barograph). Evaporimeter. Maximum and Minimum Minimum Thermometer for deter- Thermometers. mining terrestrial radiation. Soil Thermometers. Auger, Dishes, Drying Bath, and Balance for determination of soil moisture. Stevenson Thermometer Screen. Black & White Bulb thermometers. Sunshine Recorder (Campbell- Stokes or Jordans). * These two may be combined as a Thermo-Hydrograph. It is considered important that all instruments be of the best quality and be obtained from a reliable and well-known firm of makers. All thermometers should be tested and all records shouid be kept in a standardised form. As far as British Possessions are concerned it is suggested that records be kept as follows: — Rainfall... a ne ... recorded in inches and decimals. Humidity and Soil Moisture ... recorded in percentages. Evaporation ALA pr . recorded as quantity per unit area per diem. Temperatures ... oh recorded in degrees Fahrenheit. Sunshine ... 22 2 recorded in hours and minutes per diem. As a manual for guidance in the use of the instruments recom- mended it is suggested that all observers should make use of the Royal Meteorological Society’s publication entitled *° Hints to Meteorological Observers.’ ~~ Mr. NYE with regard to growth records, said he would like to know the method adopted in other places; in Uganda, if the plant was measured from the ground, difficulties invariably arose from wash after heavy rain. 146

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