Fertility, effect

Bahia grasses Elorida and southern coastal plains competes with Bermuda grasses when fertilized effect on overall yield is in dispute... [Pg.34]

However, the fertilizing effect of nitrates (and sulfates) may be counterbalanced by the leaching of potassium, magnesium, calcium, and other nutrients from forest soils. There is little evidence that agricultural crops are being injured by exposures to nitrates in precipitation. The amount of nitrates in rainwater is almost always... [Pg.24]

Fluxes are linear functions of reservoir contents. Reservoir size and the residence time of the carbon in the reservoir are the parameters used in the functions. Between the ocean and the atmosphere and within the ocean, fluxes rates are calculated theoretically using size of the reservoir, surface area of contact between reservoirs, concentration of CO2, partial pressures of CO2, temperature, and solubility as factors. The flux of carbon into the vegetation reservoir is a function of the size of the carbon pool and a fertilization effect of increased CO2 concentration in the atmosphere. Flux from vegetation into the atmosphere is a function of respiration rates estimated by Whittaker and Likens (79) and the decomposition of short-lived organic matter which was assumed to be half of the gross assimilation or equal to the amount transferred to dead organic matter. Carbon in organic matter that decomposes slowly is transferred... [Pg.417]

Gregorich EG, Drury CF, Ellert BH, Liang BC (1997b) Fertilization effects on physically protected light fraction organic matter. Soil Sci Soc Am J... [Pg.226]

Clark ER, Jordan VC (1976) Oestrogenic, anti-oestrogenic and fertility effects of some triphenylethanes and triphenylethylenes related to ethamoxytriphetol (MER 25). Br J Pharmacol 57(4) 487—493... [Pg.296]

EPA, U.S. Environmental Protection Agency, Reproductive and Fertility Effects, Health Effects Test Guidelines, OPPTS 870.3800, EPA712-C-98-208,1998b. http //www.epa.gov /opptsfrs/OPPTS Harmonized/870 Health Effects Test Guidelines/Series/870-6300. pdf... [Pg.339]

Potter, D. A. (1993). Pesticide and fertilizer effects on beneficial invertebrates and consequences for thatch degradation and pest outbreaks in turfgrass. ACS Symposium Series 522 331-343. [Pg.165]

Raupp, J. (1996). Fertilization effects on product quality and examination of parameters and methods for quality assessment. Publications of the Istitute for... [Pg.119]

US EPA (Environmental Protection Agency), OPPTS (Office of Prevention, Pesticides and Toxic Substances). (1998) Health effects test guidelines. OPPTS 870.3800. Reproduction and fertility effects... [Pg.293]

Estrogenic effect. Hexane extract of the fruit, at a concentration of 5 nM, inhibited the binding of mibolerone and methyl-trienolone to androgen receptors "" Fertility effect. Tetrahydrofuran extract of the fruit, administered orally to hamster at a concentration of 9 mg/mL, reduced sperm penetration " . Zona-free hamster oocytes, pretreated with 0.6 mg/mL of St. John s wort at a concentration of 0.06 mg/mL, resulted... [Pg.468]

The rapid fertilizing effects of bones depend on the state in which they are presented to the roots of plants, When buried in the entire state, they nndeigo decomposition very slowly, Henee it has been found neccs-... [Pg.562]

The assessment of sperm quality includes measures of sperm number, anomalies, and motility, but the ability of the sperm to fertilize the ovum is not assessed. In order to increase the sensitivity for detection of fertility effects, investigation of in vitro fertilization could be considered. Another potentially more sensitive option may be the continuous breeding protocol, where the animals produce several litters instead of only one litter per pair. [Pg.205]

Bationo, A. and B.R. Ntare (2000) Rotation and nitrogen fertilizer effects on pearl millet, cowpea and groundnut yield and soil chemical properties in a sandy... [Pg.77]

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