حسین سردابی
حیدر شرفیه
نجاتعلی سالار
غلامرضا مرادی حقیقی

‭The trial was conducted to establish plant cover for the degraded and semi‬ص ‭degraded forests and left water catchment of north semnan provice of ) Islamic Republic of Iran. The aims of the trials were to conserve soil and . water, flood control, environment reha~ilitation and involve the local forest dewelers anclniral communities' in forest conservation (sharing them in the walnut producJ income). The trial was cbnducted under experimental design of split plots with two treatments (walnunt genotypes and rainwater catchment system), each at three levels and three replicates. r . The results sh0r'ed that only the efects of rainwater catchment systems and the . , interaction of the both treatment on height, survival and crown diameter of the luglam regia were significant. Teerewas not significant difference between the walnut genotypes in their growth performances. The walnut seedlings which were planted under the mulch treatment, had the greatest growth and survival performance in comparison to control and crescent banquette methods.‬

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