New RRIC 100 clones recommended for planting [Hevea, Sri Lanka]

agronomic characters asia asie clone clones crops cultivation cultivo cultivos dicotiledoneas dicotyledons economic plants euphorbiaceae formas de descendencia forme de descendance geraniales hevea hevea brasiliensis industrial crops methode methods multiplication des plantes plant propagation plantas plantas industriales plantation plante plante de culture plante industrielle planting plants pratique culturale productividad productivity profitability progeny forms pure lines rendement rendimiento rentabilidad rubber crops sri lanka yields