The chemical composition of green coffee beans and coffee leaves as related to soil and foliar applications of secondary and minor elements
Samples of green beans and leaves of coffee trees (Coffea arabica L. var. bourbon Choussy) were collected in 1959 from an experiment located at the Coffee Experiment Substation in Puerto Rico. The substation is located at an elevation of 2,000 feet; mean monthly temperatures of 70 to 80 degrees Fahrenheit, and 70 inches of rainfall annually. The soil is lateritic with 30 to 45 slope, and has a low exchange capacity and a pH of 4.72. The experimental plants were nursery seedlings and were planted in sunhedges. The experimental design was a 3 x 4 triple rectangular lattice with six replications and six trees per plot. The treatments consisted of applying the minor elements (iron, manganese, zinc, boron and molybdenum) and magnesium, as a complete nutrient treatment to the soil and to the foliage. Lime was applied to the soil at 3.5 tons per acre. Two complete nutrient treatments were applied to the soil with out lime or with an equivalent amount of gypsum. One treatment was used in which the minor elements were supplied as FTE (fritted trace elements) to the soil in the presence of lime. The balance of the treatments consisted in omitting one of the minor elements from the soil or foliar application
| Main Authors: | , |
|---|---|
| Format: | biblioteca |
| Published: |
East Lansing, Michigan (EUA)
1961
|
| Subjects: | COFFEA ARABICA, FERTILIZANTES NPK, OLIGOELEMENTOS, COMPOSICION, FRUTO, HOJAS, FISIOLOGIA, ANALISIS DE TEJIDOS, BOURBON, |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|