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<br />Robi nson, F. E. (1969b) Carrot popu I at i on dens i ty and y I el din an arl d <br />environment. Agron. J. 61: 499-500. <br /> <br />C:':1 <br /> <br />Robinson, F. E. (1969c) Stands for automation achieved by sprinkling. <br />J. Irrigation and Drainage Div., ASCE, No. IR3, Proc. Paper 6774, 95: <br />385-389. <br /> <br />""'" <br />~ <br />.- <br />~ <br /> <br />. <br /> <br />Robinson, F. E. (1970a) Microcl imate of a sprinkled field In an arid area. <br />Proceedings 1970 Annual Technical Conference. Sprinkler Irrigation <br />Assn., Denver, Colorado. pp.62-70. <br /> <br />Robinson, F. E. (1970b) Modifying an arid microclimate with sprinklers. <br />(J726). J. Am. Soc. Agric. Engineers, p. 465. <br /> <br />Robinson, F. E. (1970c) Population density and growth rate of head lettuce <br />(Lactuca sativa L.) in an arid climate with sprinkler irrigation. J. <br />Amer. Soc. Hort. Scl. 95: 831-834. <br /> <br />Robinson, F. E. (1972) Solid set sprinkler Irrigation agricultural engineer- <br />ing. J. Am. Soc. Agrlc. Engineers 53(4): 15-16. <br /> <br />Robinson, F. E. "and J. N. Luthin. (1967) A comparison of deep and shallow <br />drain tile for reduction of soil salinity in Imperial Valley. Calif. <br />Agrlc. 21: 2-4. <br /> <br />Robinson, F. E. and O. D. McCoy. (1965) The effect of sprinkler irrigation <br />with saline water and rates of seeding on germination and growth of <br />lettuce. J. Amer. Soc. Hort. Scl. 87: 318-323. <br /> <br />Robinson, F. E. and O. D. McCoy. (1967) Population, growth rate, and maturi ty <br />of vegetable crops in relation to soil salinity and texture under <br />sprinkler and furrow Irrigation. Agron. J. 59: 178-181. <br /> <br />Robinson, F. E., O. D. McCoy, G. F. ~Iorker, Jr., H. F. Lehman. (1968) <br />SprInkler and surface Irrigation of vegetables and field crops in an <br />arrd environment. Agron. J. 60: 696-700. <br /> <br />Robinson, F. E. and G. F. Worker, Jr. (1966) Factors affecting the emergence <br />of sugar beets in an irrigated desert environment. Agron. J. 58: 433-435. <br /> <br />Robinson, F. E. and G. F. Horker. <br />beets in an arid environment. <br /> <br />(1969) Plant density and yield of sugar <br />Agron. J. 61: 441-443. <br /> <br />Schofield, C. s. (1935) Smith Institute Report: 275-87. <br /> <br />Schofield, C. S. (1940) Salt balance in irrigated areas. J. Agr. <br />Res. USA 61: 17-39. <br /> <br />Shackelford, Ernest. 1964, 65, 66, 67, 68, 69, 70, 72, 73. <br />County acreage and crop report, Palo Verde District. <br /> <br />Riverside <br />Blythe, Ca 11 f. <br /> <br />. <br /> <br />Shakhov, A. A. (1956) Salt resistance of plants. Moskva Aka!. Nank SSSR. <br />Russian with English summary. <br /> <br />Sharma, M. L. <br />gypsum. <br /> <br />(1972) Hater movement in unsaturated soils as Influenced by <br />Anst J. Soi 1 Resh. 10 (I): 25-34. <br /> <br />61 <br /> <br />J <br />