Results of crossing experiments are discussed. Two varieties could set fruit without wind and insects; another one was closely dependent on wind. The preliminary fruit set was 5 to 24 times as large as final yield. Flies were the only regular visitors, although not in large numbers. There were no wild bees in Pasuruan.
Introducing hives each of 13,000 to 15,000 bees per 10 trees into the mango gardens showed that some mango varieties were frequently visited, others less so. The commercial varieties attracted many (or fairly many) bees. Although no definitive conclusions could be drawn, an increased yield of 23 fruits per tree would already meet the expenses of bee-keeping. For peasant culture the profits would be even greater.
|Qualification||Doctor of Philosophy|
|Award date||1 Mar 1937|
|Place of Publication||Wageningen|
|Publication status||Published - 1937|
- mangifera indica
- netherlands east indies