Eolian additions to soil

Abstract

Dust s torms have long been of interest to mankind. "Dry fog" in parts of Australia, sirocco dust storms of the Sahara, harmatan haze in northern and central Africa, and "red rains" (reddish dust carried in rain fall) of Europe caught the attention of men in historic times, while extensive loess (silt) and dune sand and soils formed thereon have received scientific attention.in U.

Effect of Intra-Row Spacing and Potassium Levels on Soil Analysis and Sweet Corn Quality Traits (Zea Mays L. Var. Saccharata)

“…The samples were grind to pass through 2 mm sieve for analysis. Organic Carbon: Estimation of organic carbon in soil was carried out by Walkley and Black method as describes by Jackson (1974). Available Nitrogen: Estimation of available N content in soil were analyzed by Alkaline KMnO 4 method as described by Jackson (1974).…”

“…Organic Carbon: Estimation of organic carbon in soil was carried out by Walkley and Black method as describes by Jackson (1974). Available Nitrogen: Estimation of available N content in soil were analyzed by Alkaline KMnO 4 method as described by Jackson (1974). Available Phosphorus: Available phosphorous in soil was extracted with 0.5 M sodium bicarbonate (1:20) and determined by Olsen's method as described by Olsen et al (1954).…”

“…Available Phosphorus: Available phosphorous in soil was extracted with 0.5 M sodium bicarbonate (1:20) and determined by Olsen's method as described by Olsen et al (1954). Available Potassium: Available potassium in soil was determined by flame photometer method as given by Jackson (1974). Nitrogen content: Nitrogen content in cob and fodder were determined on per cent dry weight basis by Kjeldahl's method described by Jackson (1974).…”

Oxygen isotopic ratios in quartz as an indicator of provenance of dust

“…L--of the interrelationships of dust to paleoclimate, geomorphology, and continental drift (Jackson, 1974a(Jackson, , 1975 The micaceous mineral component of atmospheric dusts sequesters 137Cs of fallout (Syers et al, 1972); a health safety factor adding importance 10 to the study .…”

“…Goldberg estimated (quoted by Peterson and Junge, 1971) to be 500 x 10 (Judson, 1968;Jackson, 1974a (often 1-10 Um in diameter) is then obtained by sieving, gravity sedimen-7 tation, and centrifugation (Jacks6n, 1974b). Fractions still showing black 8 color (some shales) are boiled in a glass beaker for 2 minutes in 5 ml of 9 concentrated HNO3 (with drops of concentrated H2SO4 present) and then 2 ml 10 of 60% HC104 is added and the suspension is heated to fumes for a few 11 minutes (hood) thereby removing the carbon and leaving a white residue;…”