ISSN:
1573-5036
Keywords:
Barley straw
;
Decomposed straw
;
Phytotoxicity
;
Soluble carbon
;
Soluble nitrogen
;
Winter wheat
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Aerobically decomposed straws containing various contents of available C and N were tested for resultant aggregating effect on Mt. St. Helen's ash and Palouse silt loam. Aggregation decreased when straw N content increased in the range 0.25–1.09% w/w. These results suggest that microbial extra-cellular products are very important for stabilizing soils. Microbial production of acetic acid, which can be phytotoxic to wheat plant seedlings, was greatest initially from the 1.09% N w/w straw. After the first three days of aerobic decomposition, acetic acid production was not linked to the straw N content. The potential of barley and wheat straw to serve as a substrate for acetic acid production was greater than that of the remains of the flowering heads (chaff). However, the chaff might pack more tightly than the straw in the field, which would increase effectively its acetic acid concentration over that of the straw.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02450367
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