FIELD J 

 Columns 37, 38, 39, 

 40, 41, and 42 



When the seed or fleshy part of the fruit has dehydrated (prunes, dried apricots, dried peanuts, 

 dried corn and beans, etc. , including seeds and fruits which dry before removal from the plant) even 

 though they may contain still living embryos, the CBCC has regarded them, for coding purposes, as 

 being sufficiently altered from the living organ of the plant to be coded as a non-living host , i. e. , a 

 plant "material". Thus, wheat, oats, corn, beans, peanuts, etc. , which have been dried sufficiently 

 for successful storage are coded as non-living hosts (symbol series V- of Field J) when a test compound 

 is applied to them to protect them from test organisms. In this case, Fields K, L, H-l, and I are not 

 coded, except that Fields H-l and I are available for coding structures of the test organism . 



6. Living seeds (or fruits containing living seeds), treated to affect a test organism on the 

 EMBRYOS 



In general, coding of stored seeds and fruits as hosts is according to the procedure described 

 in Division 5 above. However, if the treatment is made to the seed or fruit when the host structure is 

 precisely the living, dormant or germinating embryo or young seedling in or on which is (or will be) the 

 test organism, the treatment is considered as being to the young, living plant and the symbol for the 

 plant should be coded in Field J (rather than the symbol for the plant seed or fruit), regardless of whether 

 the seed or fruit is dehydrated; Field K should be coded with the stage treated (embryo), Field L should 

 not be coded, Field H-l will be coded with "embryo unspecified" (or with the embryonic part on which 

 is the test organism), and Field H-2 will be coded with the external coat of the seed or fruit on which 

 the chemical application was made. 



7. The material in which a plant, as a TEST ORGANISM, is rooted is not necessarily coded 

 as the plant's host 



When a plant is the test organism and it is growing in ordinary, suitable soil, and when appli- 

 cation of the test compound is directly to the aerial part of the plant, the soil is not a significantly 

 variable factor of the test any more than is the air surrounding the plant. Therefore, neither soil nor 

 air need be coded in Field J in this situation; i. e. , Field J will not be used. 



However, if the test compound is applied to the soil, rather than directly to the plant, the soil 

 assumes an important role in the test and must be coded in Field J as the environmental "host" material 

 through which the test organism receives the test compound. 



If a series of chemical tests are performed on plants which differ only in being potted in soil 

 variants (sand, clay, loam, e. g. ) and the chemical is applied only to the aerial portion in each test, 

 the soil assumes an importance that it does not have when only one soil type is used (which may be 

 assumed to be the preferred soil for the plant). In the code line for each test of such a series, the 

 soil type should be coded in Field J, even though the chemical application is not made to it. (For 

 this situation in which Field J is coded, yet application of the test compound is directly to the test 

 organism, note carefully the coding of Fields M and N, as explained in Division 8 below. ) 



When plants are grown in a medium in which they are not naturally found growing (i. e. , an 

 artificial medium such as a nutrient solution, perlite, vermiculite, etc. , or a soil or water to which 

 they are essentially alien), that medium is coded in Field J as the host, even when the test compound 

 is not applied to it but directly to the test organism. (Note carefully the coding of Fields M and N in 

 these situations, as described in Division 8, below. ) 



8. Relationship between Field J and the dosage fields, M and N 



When Field J is coded, it is assumed that the dosage recorded in Fields M and N is the dosage 

 administered to that host, by the route indicated in Field S-3. Any exception to this must be indicated 

 by code in Fields M and/or N, according to whether one or both are coded. Thus, when the dose in 

 Fields M and N is the dose to which the test organism (or tumor) is directly exposed, any entry in 

 Field J must be accompanied by a symbol designating that the entry in Fields M and N is not the dose 

 the host receives but is the dose to which the test organism or tumor is exposed; this distinguishing 

 symbol is the IBM 11 zone punch in Columns 45 and/or 47 of Fields M and N (coded as Symbol #). If 

 there should be determined the concentration to which was exposed a responding organ or tissue of a 

 test organism in a host, this would be indicated by using the zone punch in Columns 45 and/or 47 

 (coded as Symbol 0). 



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