April 26, 1919 



HORTIC ULTURE 



39] 



Dakota, Minnesota, Montana, Wiscon- 

 sin, Michigan, Wyoming and Colorado. 

 Now, therefore, I, David P, Houston, 

 Secretary of Agriculture, under the 

 authority conferred by Section 8 of 

 the Plant Quarantine Act of August 

 20, 1912 (37 Stat., 315), as amended by 

 the Act of Congress approved March 4, 

 1917 (39 Stat., 1134, 1165), do hereby 

 quarantine, effective May 1, 1919, the 

 states of Alabama, Arizonia, Arkansas, 

 California, Connecticut, Delaware, 

 Florida, Georgia, Idaho, Kansas, Ken- 

 tucky, Louisiana, Maine, Maryland, 

 Massachusetts, Mississippi, Missouri, 

 Nevada, New Hampshire, New Jersey, 

 New Mexico, New York, North Calo- 

 lina, Oklahoma. Oregon, Pennsylvania, 

 Rhode Island, South Carolina, Tennes- 

 see, Texas, Utah, Vermont, Virginia, 

 Washington, West Virginia, and the 

 District of Columbia, and by this 

 Notice of Quarantine No. 38 do order 

 that no plants of the following species, 

 Berberis aethensis, B. altaica, B. 

 amurensis, B. aristata, B. asiatica, B. 

 atropurpurea, B. braehybotrys, B. 

 brevipaniculata, B. buxifolia, B. cana- 

 densis, B. caroliniana (Carolina), B. 

 coriaria, B. cretica, B. declinatum, B. 

 fendleri, B. flscheri, B. fremontii, B. 

 heteropoda, B. ilicifolia, B. integer- 

 rima. B. laciflora, B. lycium, B. ma- 

 crophylla, B. neapalensis, B. neubertii, 

 B. siberica, B. sieboldii, B. sinensis, B. 

 trifoliolata, B. umbellata, B. vulgaris 

 including its subspecies and horticul- 

 tural varieties, Mahonia aquifolium, M. 

 diversifolia, M. glauca, and M. repens, 

 shall be moved or allowed to move in- 

 terstate to points outside of the quar- 

 antined area. 



This quarantine shall not apply to 

 the movement by the United States De- 

 partment of Agriculture of the prod- 

 ucts named for experimental or scien- 

 tific purposes. 



Done in the District of Columbia 

 this 15th day of April, 1919. 



Witness my hand and the seal of the 

 United States Department of Agricul- 

 ture. D. F. Houston, 

 Secretary of Agriculture. 



INSTRUCTIONS FOR STERILIZA- 

 TION OF SAND, SOIL, OR 

 EARTH USED FOR PACK- 

 ING BULBS IMPORTED 

 UNDER NOTICE OF 

 QUARANTINE 

 NO. 37. 



Amendment No. 1 to the regulations 

 supplemental to Notice of Quarantine 

 No. 37 provides that the requirement 

 of Regulation 3 as to freedom from 

 sand, soil, or earth of nursery stock 

 and other plants and seeds permitted 

 entry under that regulation, shall not 



apply to sand, soil, or earth used for 

 packing the articles enumerated in 

 Item No. 1 when such sand, soil, or 

 earth has been previously sterilized in 

 accordance with methods prescribed 

 by the Federal Horticultural Board 

 under the supervision of a duly au- 

 thorized inspector of the country of 

 origin. 



The requirement as to sterilization 

 may be met by heating the sand, soil, 

 or earth to a temperature of 100 de- 

 grees Centigrade (212 degrees Fah- 

 renheit) and maintaining that temper- 

 ature for a period of one hour. Such 

 sterilization is accomplished at one of 

 the field stations of this Department 

 by the use of a large iron receptacle 

 holding about a cubic yard of soil. A 

 fire is built under the receptacle and 

 in a short period the contained earth 

 is heated sufficiently to kill all larvae, 

 nematodes, etc. It is necessary to 

 keep the soil stirred while heating. 

 Any device which will maintain the 

 heat at the required temperature for 

 one hour will be satisfactory to the 

 Board. 



The invoice covering importations 

 of bulbs packed in such sterilized 

 sand, soil, or earth must be accom- 

 panied by a certificate of a duly au- 

 thorized inspector of the country of 

 origin to the effect that the required 

 sterilization has been accomplished 

 under his direction. The certificate 

 should indicate the marks and num- 

 bers on the cases and should contain 

 such other information as may be 

 necessary to identify the cases which 

 it covers. 



C. L. Maklatt, 

 Chairman of Board. 

 April 10, 1919. 



FERTILIZE THE FARM ORCHARD. 



The farm orchard can be maintain- 

 ed in satisfactory condition by the use 

 of stable manure and wood ashes ap- 

 plied on the ground about the tree, 

 spreading it well beyond the extent 

 of branches as well as under the 

 branches. Give a liberal application. 

 On poor soil use more than on a more 

 fertile soil. 



For those who cannot obtain stable 

 manure use a high grade commercial 

 fertilizer, applying from 20 to 30 

 pounds per mature tree. Ground bone 

 is an excellent material to use, but 

 for immediate effect a more quickly 

 available form of nitrogen should be 

 used, such as nitrate of soda, two to 

 five pounds per tree, or sulphate of 

 ammonia in similar amounts. Tank- 

 age is a good fertilizer. Stable man- 

 ure and acid phosphate or in some 

 cases rock phosphate may be used. 

 Lime is needed on many soils and may 



be applied at the rate of a ton or more 

 per acre or 25 to 50 pounds per ma- 

 ture tree; if ground lime stone is used 

 apply double the amount mentioned. 



Peaches, perhaps, more than any 

 other fruit tree, require liberal ferti- 

 lization for paying crops of fruit. 

 Trees which are inclined to be weak, 

 either from the severe winter, effects 

 of leaf curl, over-bearing, or other 

 causes, may be revived by stimulating 

 them with nitrate of soda, applied 

 just as the buds are starting in the 

 spring and again during the summer. 

 If the fertilizer is applied before a 

 light rain, the effect upon the tree may 

 appear within a few days. While a 

 complete fertilizer is recommended 

 for peaches, nitrogen has been found 

 to be the limiting factor in many 

 peach orchard experiments. Two light 

 applications give better results than 

 one heavy one. The nitrogen is quick- 

 ly available and may be lost by leach- 

 ing if only one application is made 

 early in the season. 



No hard and fast rule can be made 

 in regard to the fertilization of or- 

 chards, but for those who have un- 

 profitable trees, perhaps neglected, 

 unpruned and unsprayed, the follow- 

 ing program is submitted: 



Prune your trees. 



Spray them. 



Fertilize them, using any of the 

 following: 



For Mature Apple Trees. 



1. Stable manure — ten to fifteen 

 loads per acre, or half a load per tree. 



2. Stable manure and 300 pounds 

 Acid phosphate. 



3. 500 pounds of a high grade fer- 

 tilizer analyzing 6 per cent nitrogen 

 and 8 per cent phosphorus. 



4. Nitrate of soda — 4 to 8 pounds 

 per tree. 



Acid phosphate — 5 to 8 pounds per 

 tree. 



Muriate of potash — 2 to 3 pounds 

 per tree (if available and needed). 

 Peach Trees. 



1. One and two year old trees % 

 lb. nitrate of soda. Mature trees may 

 receive as high as three pounds in two 

 applications. 



2. High grade complete fertilizer, 

 5 pounds per mature tree. 



3. Ground bone 5 to 10 pounds and 

 l / 2 pound nitrate of soda per tree. 



Plum and Cherry Trees. 



The growth and condition of the 

 crop will be an indication as to their 

 fertilizer needs, and that recommended 

 for peaches may be used. 

 Grapes. 



A complete fertilizer high in nitro- 

 gen, 1 to 3 pounds per vine; or 

 Nitrate of soda 14 to y, lb. per vine 

 may be used. 



