By B.V. Ilaco (Eds.)
Agricultural Compendium: For Rural improvement within the Tropics and Subtropics specializes in the improvement of rural assets within the tropics and subtropics, in addition to weather, water keep an eye on, and animal construction.
The ebook first deals details on weather and soil and land category. issues contain phenomena suitable to agricultural meteorology, class of weather, mum or dad fabrics of soils, soil fertility and outline, land review, and structures of soil category. The textual content then takes a glance at geodesy, in addition to aerial images, tools and components, measuring equipment, and calculation of surfaces.
The e-book elaborates on water keep watch over and land development, together with floor water and groundwater hydrology, drainage, irrigation, land clearing and leveling, reclamation of saline and alkali soils, and soil development. The textual content then examines agriculture, animal construction, fisheries, and farm economics.
The manuscript is very advised for agriculturists and readers drawn to the advance of rural assets within the tropics and subtropics.
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Extra resources for Agricultural Compendium. For Rural Development in the Tropics and Subtropics
2/5. ) (England) (England) 59°54'N, 52°04'N, 51°70'N, 51°64'N, 15Ί2Έ 5°53'E 1°20'W 0°24'W Kew observatory Kanzelhöhe Lindenberg S. France Russia Washington Virginia Bassour California Mt. ) (India) 51°30'N, 47°20'N, 47°15'N, 44° N, 5 CHO'W 14° O'E 1,500 890 8Ί8Έ 3° E ·- - - 200 60 39°54'N, 77° 6'W 34 540 37° O'N, 78° O'W 36°47'N, 3° 2Έ 1,160 36°40'N, 120° O'W 36°36'N. 520 35°40'N, 97°40'W 363 18°30'N, 73°54'E 564 0-43 068 0-53 0-44 0-53 062 0-47 0-34 0-59 0-61 0-44 0-52 0-48-0-42 0-66-0-64 0-50 0-48-0-68 0-55-0-62 b 0082 0041 0065 0080 0067 0056 0063 OHO 0-042 0050 0061 0066 0058 0040-0052 0-032 0056-0036 0038-0029 Sources: Schölte Ubing, Studies on solar and net radiation and on evapotranspiration of grass.
1 General Many precipitation records cannot be compared unless they are adjusted since they cover different periods, or because of changes in the location or surroundings of stations, in observation procedures, or in instrument exposure, etc. There are three methods of adjustment: Double-mass method. This is a graphical method to identify inconsistencies in a station's records by comparing the trend of the time/depth relationship with those of other stations. Successive annual or seasonal totals of the station are plotted against those of a reliable nearby station (or against the average of several nearby stations), resulting in a double-mass curve.
SEPT. 1 195/ Fig. 2/10. Weekly average of daily maximum and minimum soil temperatures at 10 cm depth in plots of mulched and unmulched growing corn at various geographical locations Source: Van Wijk, Larson & Barrows. Soil temperature and early growth of corn from mulched and unmulched soil. Soil Sei. Soc. America, Proc. 2 3 , 1959. can be increased by hedges, which are usually planted as wind protection, but these may well prevent the ventilation of cold air by light winds in flat terrains. • Sprinkler irrigation is mostly applied in night frost prevention.