[54 STAT. PUBLIC LAWS--CH. 421-JUNE 25, 1940 Experimentalgreen- Experimental greenhouse maintenance: For maintenance and oper- emintenane. ation of experimental greenhouses and adjacent experimental grounds and plots, $77,372. Fertilizer investiga- Fertilizer investigations: For investigations within the United tions. States of fertilizers, fertilizer ingredients, including phosphoric acid and potash, and other soil amendments and their suitability for agri- cultural use, $240,000. Forage crops and Forage crops and diseases: For the investigation and improvement diesees. of forage crops, including grasses, alfalfas, clovers, soybeans, lespe- dezas, vetches, cowpeas, field peas, and miscellaneous legumes; for the investigation of green-manure crops and cover crops; for inves- tigations looking to the improvement of pastures; and for the inves- tigation of forage-crop diseases and methods of control, $300,000. Forest pathology. Forest pathology: For the investigation of diseases of forest and ornamental trees and shrubs, including a study of the nature and habits of the parasitic fungi causing the chestnut-tree bark disease, the white-pine blister rust, and other epidemic tree diseases, for the purpose of discovering new methods of control and applying methods of eradication or control already discovered, and including $110,969 for investigations of diseases of forest trees and forest products, 45stat. 701. under section 3 of the Act approved May 22, 1928 (16 U. S . C . 581b), $245,000. Fruit and vegetable Fruit and vegetable crops and diseases: For investigation and con- crops and diseases. trol of diseases, for improvement of methods of culture, propagation, breeding, selection, and related activities concerned with the pro- duction of fruits, nuts, vegetables, ornamentals, and related plants, for investigation of methods of harvesting, packing, shipping, stor- ing and utilizing these products, and for studies of the physiological and related changes of such products during processes of marketing and while in commercial storage, $1,300,000. Genetics and bio Genetics and biophysics: For biophysical investigations in con- physics. nection with the various lines of work herein authorized, $25,000. Irrigation agricul- Irrigation agriculture: For investigations of crop production on Post, p. 639. irrigable lands, the quality of irrigation water and its use by crops, and methods for improving and maintaining the productivity of irrigated soils, $133,500. Mycolo'g and d ls , Mycology and disease survey: For mycological collections and the ease survey. maintenance of a plant-disease survey, $45,818. National Arboreo National Arboretum: For the maintenance and development of t. the National Arboretum established under the provisions of the Act entitled "An Act authorizing the Secretary of Agriculture to estab- 44 Stat. 1422. lish a National Arboretum, and for other purposes', approved March 4, 1927 (20 U. S . C . 191-194), erection of buildings, employment of persons and means in the city of Washington and elsewhere, and traveling expenses of employees and advisory council, $54,587, of which such amounts as may be necessary may be expended by con- tract or otherwise for the services of consulting landscape architects 42 Stat. 148. without reference to the Classification Act of 1923, as amended, or 5 U.S . C. §§ 661-674; supp. V, T673, 673c. civil-service rules. Nematology. Nematology: For crop technological investigations, including the study of plant-infesting nematodes, $48,961. Plant exploration Plant exploration and introduction: For investigations in seed and and introduction plant introduction, including the study, collection, purchase, testing, propagation, and distribution of rare and valuable seeds, bulbs, trees, shrubs, vines, cuttings, and plants from foreign countries and from our possessions, for experiments with reference to their introduction and cultivation in this country, and for investigation of their diseases, $224,533. 544
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