SOLBAR, soldarmiyon hosildihii darakhtoni mevador va jangaliro guyand. Darakhthoi mevador odatan har sol hosil medihand, vale bo qadri pir shudan hosilnokii onho kam shuda, beshtar sol dar miyon bor meorand. Dar surati navdeshidani tadbirhoi agrotekhniki darakhtoni navnihol ham kamhosil meshavand. Rastanihoi mevaashon donakdor va gujummeva odatan har sol hosil medihand.