Effect of seed quantity on growth performance of rubber seedling plants and quality of planting material

High-quality rubber seeds ensure high seedling performance and successful production of planting materials in the nursery management. An experiment was conducted at Moneragala Sub Station RRISL 2020 to investigate plants raised from different seed quantities determine growth bud-grafting success. Treatments were setup as two times quantity taken harvested three rounds (T1-control), (T2), four five one round (T3 T4). Seed beds each treatment arranged according Randomized Complete Block Design (RCBD) with replications. Germinated transferred rootstock soon tip radical has forced its way through coat. Once establishment completed, evaluated under condition. The which have significantly increased stem diameter when compared control (T1). It also revealed that dead plant percentage seedlings (T1) T3 T4 treatments. Increasing number fresh required gives more opportunities select early germinators vigor. Therefore, by treatments shown a higher bud grafting success (about 80%) T1 T2 overall results productivity can be achieved one-time quantities. However, availability cost effectiveness producing should considered application suggested method.