A research to get inheritance of Arabica coffee resistance to Radopholus similisnematode was done in screen house and laboratory of Indonesian Coffee and Cocoa Research Institute. also at endemic area of coffee plantation. using F1. F1 R and F2 crossing between BP 542 A(resistant) x Andungsari 1 (susceptible) with their reciprocal. https://www.fitnessgravesyardes.shop/product-category/speed-sensor-assemly/