a person trained and skilled in the design, construction, and use of engines or machines, or in any of various branches of engineering: a mechanical engineer; a civil engineer. a person who operates or is in charge of an engine.
The most important things to remember with planting rambutan seeds are: 1  Seeds must be put in flat. 2  Don't bury seeds too deep. 3  Soil must be kept loose.  Soil must be 1  loamy. It will take about 10-21 days for the rambutan seed to germinate.
Rambutan trees grow best in deep, well drained soils, rich in organic matter. They can grow in heavy soils, if well drained, and in sandy soils, if these have good organic matter. A pH of 4.5-6.5 is suitable. At higher pH, iron and zinc deficiencies are common resulting in chlorosis and leaf yellowing. Varieties.