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111, Nutrition of Flori cultural and Ornamental Crops » (l) 



Study the relations between varying soil nutrient levels, flower 

 production, and quality of carnations and (2) soil nutrient 

 requirements of floricultural pot plant crops, 

 Hort. 65-353 



Mi, The Relationship of the Mineral Nutrients and of Nutrient 



Levels to the Growth and Flowering of the Azalea Under Greenhouse 

 Conditions . To (1) determine growth and flower bud production 

 under various levels of nutrition with controlled environmental 

 conditions; (2) correlate nutritional findings with growing and 

 forcing practices to improve rapidity and habit of growth and 

 subsequent flowering; and (3) study causes and conditions under 

 which "iron" chlorosis develops and methods of prevention or 

 control, 



Hort. I-79-H 



Mi, The Balance and Intensity of Inorganic Nutrient Elements 



as They Affect the Growth. Flowering, and Qij^lit'y of Hydrangea 

 Macrophylla Thunb , Under Greenhouse Conditions^ To (1) study 

 effects of major elements and their intensities on growth of 

 the plant; (2) study deficiency symptoms of this crop as to minor 

 elanents and response to minor elonent fertilization; (3) develop 

 more definite means of flower color control; (A) develop better 

 means of correcting iron deficiences in hydrangeas; and (5) study 

 effects of ratio, intensity, frequency, and time of fertilizer 

 applications during growing and forcing period, to develop a 

 fertilizer program for this crop under florist ♦s conditions, 

 Hort, 1-7^1 



Mass, Use of Sewage Sludge in Conposting , Investigate sewage sludge 



as a source of composting micro-organisms with particular reference 

 to the decOTiposition of cellulosic material, 

 Bact, 18 



Mass, The Effect of Iron Chelators on Nutrition of Roses , To 



determine the effect of iron chelators on foliar chlorosis and 

 nutrition of roses, grown in soils with different levels of 

 phosphate • 



Hort, 60 



Mass, Effect of Nutrient Elements, Light and Temperature on Growth 



of Carnations , To study (1) B requirements of carnations and identify 

 deficiency symptoms, (2) interaction of Ca and B in nutrition of 

 carnations and establish a satisfactory B-Ca ratio for carnation pro- 

 duction, (3) interaction of K and Mg in nutrition of carnations, and 

 effect of high levels of K in inducing Mg deficiency in carnations, 

 (a) effect of P levels on carnation production in soils prepared with 

 relatively large quantities of peat moss, (5) effect of supple- 

 mentary light on growth and production of carnations, (6) relation- 

 ship of light duration and night temperatures for carnation production, 

 Hort, 61 



