use of S on strongly weathered soils with a poor reserve of minerals could not be recommended. The injurious effect of applying S to slightly weathered soils with a sufficient reserve of minerals had no practical significance, since the adsorption complex impoverished of bases, enriched itself again by gradual weathering.
Another advantage associated with the use of S was that it seemed to control some parasitic root fungi of the tea plant, fungi which mainly occurred on slightly weathered young volcanic soils.
How far these results of pot trials would also hold for field conditions would largely depend on the thoroughness of mixing S and soil. In new plantations, S could be applied primarily to the plant holes. In nursery trials, however, S should be mixed with the whole top soil. The influence of base status of the soil on adult tea plants was not studied.
|Qualification||Doctor of Philosophy|
|Award date||8 Jul 1932|
|Place of Publication||Wageningen|
|Publication status||Published - 1932|
- camellia sinensis
- cation exchange
- soil science
- netherlands east indies