. The Cuba review. 26 THE CUBA REVIEW. Five Sisters in Cuba. All Americans. Ihe Use of Lime in Cuba. i5\- Dr. Paul Karutz. Ceballus, Cuba, Aug., '09. Tlu- general soil-condition in Culja calls for lime, either for neutralizing the soil's acidity or for setting tree plant- food that nature intendea to rc;;.erve. On the hcav}- red soil the addition of lime will be benelicial also for the soils, pre- venting baking and cracking drring dry weather. Since the iime has the powei' to make available the stored plant-food /t seems to be the cheapest kind of fertilizer, but here we have to be very caref
. The Cuba review. 26 THE CUBA REVIEW. Five Sisters in Cuba. All Americans. Ihe Use of Lime in Cuba. i5\- Dr. Paul Karutz. Ceballus, Cuba, Aug., '09. Tlu- general soil-condition in Culja calls for lime, either for neutralizing the soil's acidity or for setting tree plant- food that nature intendea to rc;;.erve. On the hcav}- red soil the addition of lime will be benelicial also for the soils, pre- venting baking and cracking drring dry weather. Since the iime has the powei' to make available the stored plant-food /t seems to be the cheapest kind of fertilizer, but here we have to be very careful. Re- peated applications of lime will draw on the plant-food reserve all right, but it cannot add anything except bettering the physical condition of the soil. Therefore lime can never replace proper fertilizers. The replacing of the drawn plant-food by organic or artificial fertilization has to follow under all circumstances. At the present time where the fruit growing in Cuba is more or less in its infancy and where poor bearing of trees can l)e traced to sour soil and unavailable plant-food, we have to start with lime. There are three kinds of lime we can use: carbonate of lime, represented by the coral formation which underlies the Cuban soil: burned lime, which is cal- cium oxide, the corals less the carbonic acid which has been driven out by burn- ing; and calcium hydroxide, which has l)een formed out of the by absorb- ing water out of the air, and is called air-slacked lime. When this air-slacked lime has been exposed to the air for a longer time it absorbs again carbonic acid, changing into carbonate of lime; resembling chemically the corals, but. of course, in powder form. This absorb- ing of carbonic acid also takes place in the soil when burned or air-slaked lime has been applied. It makes very little differenc; whether the soil receives the calcium in any of the three combinations, the value lays more in the grade of fineness than in the chemical combinati
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