﻿EFFECT OF BORAX ON GROWTH AND YIELD OF CHOPS. 



15 



COTTON. 



Experiments with the Cleveland Big Boll variety of cotton similar 

 to those with corn just described were also made and some interesting 

 results obtained. Cotton planted as late as June at Arlington could 

 not mature. The effects of borax, however, were noted on ger- 

 mination, growth, and boll formation. In these tests each treatment 

 occupied one row or an area of one two-hundred-and-seventieth of an 

 acre. The 4-8-4 fertilizer was used at the rate of 1,000 pounds per 

 acre. The cotton was planted thick and thinned to 45 hills per plat, 

 with 2 plants to each hill. The complete data are given in Table 7. 



Table 7. — Effect of various quantities of borax on the growth and fruiting of cotton on 

 silty clay loam at Arlington, Va., in 1920. 



[The measurements of height of plants were made in experiment series A and B, for sections 2 and 3, on 

 July 27; for section 1, on August 3; those for experiment series C, sections 2 and 3, on August 3, and for 

 section 1, on August 10.] 





Yield per plat. 





Sec. 1.— Fertilizer applied in 



Sec. 



2.— Fertilizer applied 



Sec 



3.— Fertilizer applied 



Experiment, 

 date started, 

 and borax per 



drill 7 days before planting. 



in drill at time of planting. 



broadcast at time of planting. 



Plants. 



6 





A 



Plants. 



■a 





aS 



T3 



Plants. 



6 



a 



A- 



-d 









03 £ 



o ai 









03 g 



o a3 









03 g 









., 



£«i 



Eh 



K 03 



Sol 





i«. 



8* 



tH 



8o3 





- 



8 § 



U4 



<g°3 





si 



M 



'53 

 W 



■as 



S £ 

 I 3 



~ 3 

 o w 



m 



03 £ 

 O 



a 



w 



be o> 

 •53 £ 



03 £ 



o 



a 



o m 



m 



03 £ 



1— 1 



■M 



'53 



H 



■53 £ 



« £ 

 £o 



o 



a 



— c 



O M 



n 



£ " 



o 



a 

 i— i 



Series A, June 2: 



Ins. 



Lbs. 



P.ct. 



No. 



P.ct. 



7ns. 



Lbs. 



P.ct. 



No. 



P.ct. 



Ins. 



Lbs. 



P.ct. 



No. 



P.ct. 



None 



16.9 



61 





1,680 





12.5 



60 





1,777 





14.8 



73 





1,435 





5 pounds 



12.4 



56 



-8.2 



1,295 



-22.9 



11.6 



59 



-1.7 



1,000 



-43.7 



14.1 



80 



+ 9.6 



1,252 



-12.7 



10 pounds . . . 

 Series B, June 9: 



11.2 



58 



- 5 



1,315 



-21.7 



10.1 



61 



+ 1.7 



967 



-45.6 



11.0 



55 



-24.7 



901 



-37.2 

































None 



8.8 



67 





1,478 





11.5 



72 





1,441 





13.0 



72 





1,525 





5 pounds 



8.1 



69 



+ 3 



1,400- 5.3 



7.3 



62 



-14 



1,305 



-9.4 



10.0 



79 



+ 9.7 



1,503 



-1.4 



10 pounds 



Series C, June 18: 



6.9 



67 







1,302-11.9 



6.5 



58 



-19.5 



1,361 



- 5.6 



8.8 



68 



-5.6 



1,600 



+ 5 









1 























None 



9.6 



62 



1,500 ! 



10.2 



69 





1,697 





10.7 



68 





1,692 







7.0 



62| 



1,590+ 6 



9.6 



70 



+ 1.4 



1,750 



+ 3.1 



9.1 



71 



+ 4.4 



1,800 



+ 6.4 



10 pounds 



6.7 



571- 8 



1,490- .7 



8.7 



72 



+ 4.4 



1,505 



-11.3 



7.8 



64 



- 5.9 



1,613 



- 4.7 



20 pounds . . . 

 Series D, July 7: 



6.5 



56|- 9.7 



1,380- 8 



6.8 



49 



-29 



1,480-12.8 



7.2 



53 



-22 



1,520 



-10.2 





















- ..;. 

















40 

 37 

 29 

 21 



-7.5 

 -27.7 

 -47.5 



1,100 



1,000 



760 



597 







45 

 49 

 33 

 29 



+ 8.9 

 -26.7 

 -35.5 



1,539 



1,392 



1,050 



930 







54 

 51 

 41 

 35 



-5.6 

 -24.2 

 -35.2 



1,610 

 1,630 

 1,210 

 1,030 









- 9.1 

 -30.9 

 -45.7 





-9.5 

 -31.7 

 -39.5 





+ 1.2 







-24.8 







-36 



Series E, July 15: 











26 

 25 

 21 

 21 





 -19.2 

 -19.2 



622 

 680 

 585 

 560 







28 

 24 

 23 

 18 



-14.3 



-18 



-36 



823 

 822 

 718 

 434 







35 

 36 

 33 

 30 



-2.9 

 -5.8 

 -14.3 



1,146 

 1,137 

 1,005 

 1,020 









+ 9 

 - 6 

 -10 





- .1 

 -12.7 

 -47.2 





-0.8 







-12.3 







-11 



Series F,August5: 











10 



10! 

 8-20 

 91—10 





 

 







13 

 11 

 12 



8 



-15.4 



-7.7 

 -38.4 





 

 

 







17 

 14 

 14 

 13 



-i7.6 

 -17.6 

 -23.5 





 

 

 











































































An examination of the data given in Table 7 shows generally that 

 the growth was checked and the fruiting decreased by the borax. 

 A record of the height of the plants, made when the crop was young, 

 shows that the growth was checked in the very beginning by the oorax. 

 The degree of injury, however, varies with the different plantings and 

 with the different methods of applying the fertilizers. The germina- 

 tion was rather irregular where 20 pounds of borax were applied, 

 and in spots the young cotton died. The use of 10 pounds of borax 

 had a decided effect on the color of the foliage in each experiment, 



