
9 










f Analyses of pineapple soils. 
No. 79. No. 101. No. 102. No. 132. | No. 152. 
Soil constituents and reactions. (plants (plants (plants (plants | (plants 
chlorotic). | chlorotic). | chlorotic). | healthy). | healthy). 
Per cent. Per cent. Per cent. Per cent. | Percent. 
INSHlaDIS THAb Ors. — iat. soc es celan snes en's 54. 04 56. 85 OO) Gdn ase ee eee 89. 76 
IPetash CKsO)F cece hook 2 tomers . 06 - 03 OR eee SSeS } . 08 
PANG COA ye oe enc et cae eeeee rede === 22. 27 20. 40 C2 Fag Wl eee al pa -15 
Maoriesia\( MeO) i233. o2 - teem ne 2.01 -78 S86) Bender ce Blt 
Ferric and al:1minic oxids (Fe203 and Al203) .79 2.06 pi all bat sare oe 5. 70 
Phosphorus pentoxid (P205)-.------------- - 04 -05 OBI Sate peaptoaes - 03 
Wolstilesnatiers 22° 2Sseseoes-2. 2 fe 2. 22. 20. 79 19. 87 yA eA) ee oe Se 3.16 
Migtalnse® Sa: Soed- © eke is Ses 5-2 100. 00 100. 04 AOOKHS [sass one ee | 99. 65 
inirorenICIN) has22---- asec ashlee <r 5 ct - 02 ii APD) he as ea - 06 
JAGR ih ae 2 ee Oe ees ee ee ae 137, 4.01 Pe De eae See eae - 43 
Garbon dioxid (COs)o.. 02... sot sc sss os leb ees testes 14.88 14.14 Trace. Trace. 
Galewmmicarbonate (CaO Os). 3.2 2 =< 5 nce n= oll ore seem wi 33. 85 32.17 Trace. Trace. 
Besction to: litmMusy.. .b se scces 20% -0 5+ Alkaline. | Alkaline. | Alkaline. | Alkaline. Neutral. 



It will be seen by the above analyses that the soils where the plants 
became chlorotic contain a large amount of carbonate of lime, that 
the soil where the plants remained healthy contains a trace, and that 
the soil where the chlorotic plants recovered contains but little lime and 
no carbonate of lime. 
SOIL SURVEY II. 
Plantation of the Bird Bros. at Luquillo: This planting of Red 
Spanish pineapples consisted of about 10 acres or more; it was on a 
loose sandy soil a few hundred yards from the sea. The pineapples 
were planted between coconut trees. The soil was of good physical 
condition, but the land was so low that the drainage was poor. After 
very heavy rains the water was found standing within 12 inches of the 
surface. : 
The chlorosis here was more marked than on any other plantation. 
When 6 or 8 months old most of the plants were waxy white. At the 
end of 18 months many plants were dead, the greater part of the 
remainder were colorless, while a few were of a light green with long 
spiky leaves. About a dozen plants with very small fruits were found. 
On no part of this field were the plants vigorous. The analyses of sam- 
ples of soil taken from various parts of the planting are given below: 
Analyses of pineapple soils (plants chlorotic). 







Soil constituents and reaction. No. 163. No. 191. No. 194. 
Per cent. Per cent. Per cent. 
Insoluble matter 7.84 3. 53 cba 
Potash (620): .i2--tecee--< PLOE | Ee ersnecee een wosmaee ee 
hime (CaO) =.522-222-544545 44.73 43. 49 42.94 
Magnesia ps Sal i tes A abate > ee et 2 7 oie i Fe See a ae 2. 26 1. 43 5.78 
Ferric and aluminic oxids (Fe:O3 and AlgO3)........-..------------ 3.16 4.71 3.08 
PResphonus peniexid (lsOg)2 a. seen es sce ee eee ae ese eee aaa -16 al - 20 
MGIIBIGAMALLED. — 2 cc cls ceo sets = nice ba = a's a nig td ee ae ia be ess 42. 25 45. 87 44, 29 
TESTE Be eo Oe oats ae One ESE IE Eee Bo eR EE ar Se POO: BO |S ren ced eels a eet 
SSSERT Ea OS) aE ES een ee eae epee oreo ease rere os ae . 20 .19 soni 
SIS ITO eed eh eat Ae eae ots SEL) cee eb epee ece eas ae sce 1.78 1.70 1.90 
(Dinar CesT Ole Fee Cees ES Sees aogier 35. 03 33. 55 35. 06 
Galenmicarbonate((Cal Os)... 2: oh )-etsees-25a-\de Sas sse2 2264 2 79. 70 76. 33 79. 76 
EOHG TMAE EU TENIS MS a amo e a clas oo ac cals cum Wels eairamisinmermcinet = ste Alkaline. | Alkaline. Alkaline. 
ee 
412°—Bull. 11—11——2 
