Agricultural field

The yield of hydroquinone is 85 to 90% based on aniline. The process is mainly a batch process where significant amounts of soHds must be handled (manganese dioxide as well as metal iron finely divided). However, the principal drawback of this process resides in the massive coproduction of mineral products such as manganese sulfate, ammonium sulfate, or iron oxides which are environmentally not friendly. Even though purified manganese sulfate is used in the agricultural field, few solutions have been developed to dispose of this unsuitable coproduct. Such methods include MnSO reoxidation to MnO (1), or MnSO electrochemical reduction to metal manganese (2). None of these methods has found appHcations on an industrial scale. In addition, since 1980, few innovative studies have been pubUshed on this process (3). 

Air Pollution Emission Factors for Agricultural Field Burning... 

As a result of its use as an insecticide on cotton, fruit trees, vegetables, and other crops, methyl parathion is released directly to the atmosphere during application. It is applied primarily by spraying from aircraft or ground equipment (NPIRS 1986). Aerial application of methyl parathion to agricultural fields releases the insecticide to the air. 

Agricultural Field Experiments Design and Analysis, Roger G. Petersen... 

J.N. Seiber, J.E. Woodrow, P.S. Honaganahalli, J.S. LeNoir, and K.C. Dowling, Flux, dispersion characteristics, and sinks for airborne methyl bromide downwind of a treated agricultural field, in Fumigants Environmental Fate, Exposure, and Analysis, ed. J.N. Seiber, J.A. Knuteson, J.E. Woodrow, N.L. Wolfe, M.V. Yates, and S.R. Yates, ACS Symposium Series No. 652, American Chemical Society, Washington, DC, pp. 154-177 (1997). 

Oakland, B.G., Schabacker, D.J., Dodd, R.B., and Ross, R.H. (1992b) The evaluation of protective clothing as chemical barriers for mixer/loaders and applicators in agricultural field tests designed to meet FIFRA GLP testing standards, in Performance of Protective Clothing, Vol. 4, McBriarty, J.P and Henry, N.W., Eds., ASTM STP 1133, American Society for Testing and Materials, Philadelphia, PA, pp. 481-495. 

Stehfest E, Bouwman L (2006) N20 and NO emission from agricultural fields and soils under natural vegetation summarizing available measurement data and modelling of global annual emissions. Nutr Cycl Agroecosyst 74 207-228... 

Safety margins of 78-131 for fertilisation of agricultural fields with sewage sludge were calculated. 

Developing hedgerows of fodder trees should also be practiced on rainfed agricultural fields on sloping terrain, since this is another effective adaptation technique that reduces the risk of slope failure and soil erosion. 

Fig. 9. GC-MS TIC traces for silylated total extracts of soil, river sediment and aerosol samples (a) Amazon Forest soil (Manaus, Brazil) (b) almond orchard agricultural field soil (CA, USA) (c) Harney River sediment in Everglades National Park (FL, USA), and (d) Gosan Island (Korea) aerosol during Asian dust event (April 27—28, 2001). Numbers refer to carbon chain length of homologous series ( = rj-alkane, o = rj-alkanol, A = rj-alkanoic acid, DHA = dehydroabietic acid, ik = isoprenoid ketone, S = sitosterol). 

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