Fallow soils

Germination and survival of endoconidia and chlainydospores of Thieh iopsis hct-sicola in fallow soil and in soil adjacent to germinating bean seed, Plmopalholof>y 59 371 (1969). 

Smit AAMFR, van den Berg F, Leistra M (1997) Estimation method for the volatilization from fallow soils. Environmental Planning Bureau series 2, Wageningen, Netherlands, DLO Winand Staring Centre... 

Bromilow, R.H. and Leistra, M. Measured and simulated behaviour of aldicarb and its oxidation products in fallow soils, Pestic. Sci, 11 (4) 389-395, 1980. 

E. coli 0157 H7 in soil. In unplanted, fallow soils, . coli 0157 H7 persisted only for 25-41 days, but was found up to 92 and 96 days if alfalfa or rye plants were present, respectively. Ibeweke et al. (2004) also found that the presence of roots in contaminated soils increased concentrations of E. coli 0157 H7. In this study, E. coli introduced through irrigation water was found to reach higher densities in rhizosphere soils than in nonrhizo-sphere soils (Ibeweke et al, 2004). Bacterial populations in soil increased after the addition of plant material to soil the bacterial population spiked and then fluctuated in a wave-like fashion that was not found to be the result of nitrogen shortages or pH (Ibeweke et al, 2004). In contrast to... 

It is a general observation that herbicide degradation occurs more readily in cultivated than fallow soil, suggesting that rhizosphere organisms are effective herbicide degraders. Whether this can be effectively exploited in a phytoremediation strategy remains to be seen. 

Glotfelty, D.E., Taylor, A.W., Turner, B.C., Zoller, W.H. (1984) Volatilization of surface-applied pesticides from fallow soils. J. Agric. Food Chem. 32, 638-643. 

K Fertilizers from Lakeland Sand Under Grass and Fallow, Soil Crop Sci. Soc. Fla. Froc. (1970) 30 pp. 

Fig.5.1. Mineralization of nitrogen in cropped and fallow soils after 5, 9, and 13 weeks. (From Goring and Clark, 1948.)...

Comparisons of stubble mulch with complete chemical fallow systems of farming have usually given results that favor the former system. For example. Black and Power (1965) reported that wheat yields on stubble-mulched soils were higher than where spray was used. Furthermore, neither chemical fallow nor combinations of chemical and mechanically-tilled plots resulted in more moisture conservation than with conventional stubble mulch. Wind erodibility was, however, less with complete chemical fallow soils, doubtless because of complete absence of tillage. 

Studies reported by Army et al. (1961) showed that the soil moisture content below 2 inches was not materially increased by surface residues. Evaporation losses during the summer months from both stubble-mulched and bare fallow soils constitute a high percentage of the total precipitation. A summary of many experiments conducted in the Great Plains showed losses during the fallow period of 76% of the precipitation. In other tests 83% of the rainfall was lost between the harvest of one crop and the seeding of the next (Mathews and Army, 1960). 

Glotfelty DE, Taylor AW, Turner BC, et al. 1984. Volatilization of surface- applied pesticides from fallow soil. J Agric Food Chem 32 638-644. 

Glotfelty, D.E., A.W. Taylor, B.C. Turner, and W.H. Zoller. Volatilization of Surface-Apphed Pesticides from Fallow Soil, J. Agric. Food Ghem., 32 638-643 (1984). Gohre, K. and G.C. Miller. Pholooxidation of Thioether Pesticides on Soil Surfaces, J. Agric. Food Ghem., 34(4) 709-713 (1986). 

A. 1980. A comparison of in planted and in fallow soils. Soil Biology and Biochemistry, 12 281-291. 

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