Results 211 to 220 of about 42,606 (255)
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RECYCLING CROP RESIDUES FOR USE IN RECIRCULATING HYDROPONIC CROP PRODUCTION
Acta Horticulturae, 1996As part of bioregenerative life support feasibility testing by NASA, crop residues are being used to resupply elemental nutrients to recirculating hydroponic crop production systems. Methods for recovering nutrients from crop residues have evolved from water soaking (leaching) to rapid aerobic bioreactor processing.
C L, Mackowiak, J L, Garland, J C, Sager
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Wind Erosion Control with Crop Residues in the Sahel
Soil Science Society of America Journal, 1997Abstract Mulching for wind erosion control in Sahelian farming systems is limited by low biomass production and use of crop residues for other purposes. The aim of this study was to test the effectiveness in soil protection created by two low amounts of crop residues.
Sterk, G., Spaan, W.P.
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2016
In developing countries, the key in promoting physical, chemical, and biological attributes of soil health in agricultural systems is mainly through the retention of crop residue in fields in view of scarcity of alternative source of organic amendments.
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In developing countries, the key in promoting physical, chemical, and biological attributes of soil health in agricultural systems is mainly through the retention of crop residue in fields in view of scarcity of alternative source of organic amendments.
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Parathion Residues as a Cause of Poisoning in Crop Workers
Journal of Occupational and Environmental Medicine, 1958The application of parathion as a pesticidal spray in fields and orchards leaves a residue that declines rapidly on most crops for the first few days and more gradually during a period of weeks. Persons not actually engaged in spraying but working among trees and vines thereafter run a risk of poisoning that depends on a number of factors.
G E, QUINBY, A B, LEMMON
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Rogor (dimethoate) residues in food crops
1965Owing to its high insecticidal activity, systemic properties and relatively low toxicity to mammals, Rogor [O,O-dimethyl S-(N-methyl carba- moylmethyl)phosphorodithioate], also known as dimethoate in the USA and in other countries and as Fosfamide in the Soviet Union, has found a progressively increasing use for the control of several species of ...
P, De Pietri-Tonelli, B, Bazzi, R, Santi
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Variability of pesticide residues in crop units
Pest Management Science, 2006AbstractThe results of 89 new field trials and 11 supervised trials were considered, together with 91 sets of residue data evaluated earlier. The datasets consisted of 22 643 valid residue data. As all variability factors calculated from individual sample sets are affected by the uncertainties of sampling and analysis, the average of the P0.975/Rave ...
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