﻿EFFECT OF BORAX ON GROWTH AND YIELD OF CROPS. 7 



germination on the 400-pound plat, and only 7 seeds germinated 

 where 200 pounds were used. 



Table 1. — Effect of various quantities of borax on Lima beans in field plats on silty clay 

 loam, at Arlington, Va., in 1920. 





Sec. 1. — Fertilizer applied in 

 drill 7 days before planting. 



Sec. 2.— Fertilizer applied in 

 drill at time of planting. 



Sec. 3. — Fertilizer applied 

 broadcast at time of planting. 



Borax per 

 acre. 



Plants up 

 June 25. 



Yield per plat 

 (pounds). 



Plants up 

 June 25. 



Yield per plat 

 (pounds). 



Plants up Yield per plat 

 June 25. , (pounds;. 





Num- 

 ber. 



Height, 

 inches. 



Beans. 



Vines. 



Num- 

 ber. 



Height, 

 inches. 



Beans. 



Vines. 



Num- 

 ber. 



Height, 

 inches. 



Beans. 



Vines. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



1 pound. . . . 



2 pounds . 



3 pounds... 

 None 



4 pounds 



5 pounds 



10 pounds... 



None 



20 pounds... 

 30 pounds.. 

 50 pounds... 



None 



100 pounds. 

 200 pounds. 

 400 pounds. 



i 72 

 75 

 62 

 73 

 70 

 77 

 85 

 82 

 65 

 77 

 74 

 83 

 48 

 37 

 4 



8.0 

 9.2 

 7.8 

 9.4 

 7.5 

 7.0 

 6.8 

 9.0 

 6.9 

 6.2 

 5.2 

 9.3 

 2.6 



25.0 

 26.0 

 26.4 

 24.7 

 21.7 

 27.5 

 21.6 

 18.8 

 19.7 

 19.8 

 19.0 

 19.9 

 5.2 

 4.8 

 



49 

 57 

 46 



. 43 

 42 

 45 

 48 

 46 



. 39 

 31 

 34 

 46 

 15 

 16 

 



60 

 52 

 60 

 82 

 76 

 71 

 42 

 75 

 48 

 32 

 19 

 73 

 9 

 8 



5 



7.7 

 7.7 

 7.7 

 8.7 

 8.1 

 7.4 

 6.7 

 9.1 

 6.1 

 5.2 

 3.8 

 8.1 



21.0 

 22.5 

 23.5 

 20.0 

 21.8 

 27.7 

 16.9 

 22. S 



2o!s 



12.0 

 9.5 



16.5 

 2.6 

 2.4 

 



52 

 46 

 47 

 47 

 44 

 46 

 37 

 49 

 35 

 31 

 21 

 42 

 15 

 10 

 



80 

 63 

 58 

 78 

 76 

 72 

 63 

 70 

 41 

 63 

 39 

 83 

 17 

 7 

 



7.7 

 8.6 

 8.0 

 8.9 

 6.8 

 6.8 

 6.3 

 8.8 

 5.7 

 5.6 

 4.1 

 8.7 



23.0 

 26.1 

 25.0 

 22.9 

 21.0 

 25.1 

 23.2 

 23.5 

 15.9 

 19.2 

 11.7 

 17.8 



3.5 











51 

 47 

 47 

 49 

 46 

 43 

 41 

 40 

 38 

 45 

 38 

 45 

 15 

 

 



Where the fertilizer was applied in the drill, the borax in as small 

 quantities as 1, 2, 3, and 4 pounds per acre had a retarding effect on 

 the early growth of the beans, and 10 pounds of borax markedly 

 stunted the plants. There was not much noticeable depression of 

 growth by borax in quantities under 4 pounds, and when the bean 

 vines reached maturity they had outgrown all injury. 



In section 1, 20 pounds of borax decreased the growth of vines, but 

 the production of beans was not influenced by quantities under 100 

 pounds per acre. In section 2, 10 pounds per acre caused marked 

 depression in the final yield of both vines and beans. In the broad- 

 casted section 20 pounds per acre depressed the production of beans, 

 but vine growth was not influenced by quantities smaller than 50 

 pounds. There was some stimulation in all sections by the smaller 

 applications. 



EFFECT OF BORAX ON SNAP BEANS. 



The experiment with snap beans was similar in all details to that of 

 the Lima beans. The seeds were planted on May 26, somewhat thick 

 in the row and thinned to 125 per plat on June 15. They had 

 matured by August 13, on which date the experiment was terminated. 

 The beans were picked weekly, and the record is given in pounds of 

 green beans produced. 



The snap beans proved to be very sensitive to borax. During the 

 first month the plants where 1, 2, 3, 4, and 5 pounds of borax were 

 applied in section 2 showed a slightly lighter color of foliage than the 

 no-borax plat, although there was no distinct bleaching. There was 

 a distinct and marked bleaching of leaves with 10 pounds and upward. 

 This effect was distinguished by a curled leaf having yellow and brown 



