Fluorides 



industrial wastes, p. 37 



phytotoxicity, p. 154 



public water supplies, p. 23, 23 



toxicity — sea water, p. 88 

 Foliar absorption 



irrigation water, p. 172 

 Food cleaning 



canneries, p. 208 

 Food industry 



carbonated beverage industry, p. 211 



industrial water, p. 187 



water consumption, p. 188 



water quality requirements, p. 210 



water utilization, p. 208 



see also Canneries; Carbonated beverage industry 

 Foods 



waterfowl, p. 94 

 Forages 



salt tolerance, p. 149, 150 

 Fowl cholera 



transmission prevention, p. 38 

 Fresh water 



algae, p. 51 



alkylbenzene sulfonates, p. 35 



bacteria, p. 51 



bioassay and application factor recommendation, p. 59 



carbon dioxide, p. 33 



color, p. 34, 48 



cooling water, p. 193 



dissolved materials, p. 32 



dissolved oxygen, p. 33 



dissolved solids, p. 39 



heavy metals, p. 59 



hydrogen ion concentration, p. 32 



light penetration, p. 34 



linear alkylate sulfonates, p. 35 



nuisance algae and plant nutrients, p. 34-35 



oil, p. 33 



pesticides toxicity, p. 35 



radioactive wastes, p. 49 



sediments, p. 34 



tainting prohibition, p. 34 



tainting substances, p. 48 



temperature effects on organisms, p. 32 



toxicity, p. 34 



turbidity, p. 34 



waste concentration recommendation, p. 59 



water quality, p. 39-66 

 Fresh water fish 



oil, p. 46 



sediments, p. 47 



tainting substances, p. 48 



water temperature, p. 32, 43 



see also Fish 

 Fruit crops 



chloride concentration in soil solution, p. 156 



salt tolerance, p. 150 

 Fungicides 



fresh water recommendation, p. 64 



median tolerance limit, p. 64 



Garbage dumps 



sea water, p. 76 

 Gas chromatography 



water analysis, p. 178, 179 

 Germination 



prevention through growth of planktonic algae, p. 51 

 Giant Spirogyra 



chemical composition, p. 55 



Glossary 



water and waste water control, p. 107-110 

 Groundwater 



farmstead water sources, p. 121 



irrigation practices, p. 112, 113 



water quality, p. 122 

 Growth inhibitors 



heavy metals, p. 60 

 Growth stages — plants 



salt tolerance, p. 150, 151 

 Gulf of Mexico Western Basins 



dissolved solids, p. 168 

 Gyinnodinium, p. 137 



Habitat 



waterfowl requirements, p. 38 

 Hardness (water) 



ambiguity, p. 41 



calcium carbonate, p. 41 



causes, p. 41 



farmstead water supplies p. 121, 122 



public water supplies, p. 23 

 Heat exchangers 



boiler feed water, p. 192 



cooling water, p. 192 



water properties, p. 192 



water quality, p. 192 

 Heat treatment 



water purification, p. 128 



water treatment, p. 128 

 Heavy metals 



algal control, p. 61 



calcium-magnesium influence, p. 60 



copper — freshwater, p. 60 



fresh water, p. 59 



mode of toxic action, p. 85 



phaeophyta, p. 84 



plankton, p. 84 



sea water, p. 84 



temperature influence on toxicity, p. 60 



toxicity — sea water, p. 84 



uptake by invertebrates, p. 84 



zinc — fresh water, p. 59 

 Helminth transmission 



irrigation water, p. 162 

 Heptachlor 



toxicity, p. 37, 83 

 Herbicides 



fresh water recommendation, p. 63 



irrigation water, p. 118, 118, 156, 158 



median tolerance limit, p. 64 



residues — public water supplies, p. 25 



stock water, p. 137, 138 

 Herbivores 



pesticide residues, p. 81 

 Hogs 



saline water tolerance, p. 134 

 Horsehair worms 



nematodes, p. 142 

 Horses 



saline water tolerance, p. 134 

 Humid areas 



arid lands, p. 172 



evapotranspiration, p. 172 ' 



irrigation water quality criteria, p. 172 



salinity, p. 173 



soil chemical properties, p. 173 

 Humid climates 



acidic soils, p. 172 



irrigation water quality, p. 171 



222 



