Faidherbia albida tree is known for its positive influence on most crops due to reverse leafing phenology. This study aimed at investigating the impact of pollarding F. albida on tree growth, wheat physiological performance and soil conditions. The study was conducted from June 2015 to October 2016 in Ejerssa Joro, a semi-arid region of Ethiopia. Leaflet per twig were scored. Sap flow volume and radial cambium growth were measured. Experimental design was employed with 1m² areas under non-pollarded and pollarded trees from three directions and from different distances. Soil moisture, photosynthetically Active Radiation (PAR), air temperature and relative humidity (RH) were measured. Soil physicochemical properties were analysed. Wheat growth and physiology were measured. Sap volume in non-pollarded was 4590 L month⁻¹ in January 2016 when the tree was fully foliated. Despite the spatiotemporal differences in leaflet per twigs between and within the trees, complete reverse leaf phenology was not observed during the study periods. Cambium growth was affected by pollarding F. albida. The PAR level and midday air temperature under non-pollarded were reduced by 77% and 6%, respectively. On the other hand, RH in dry periods and soil moisture in July under non-pollarded were higher by 15% and 42%, respectively. Most of the soil macronutrients found under non-pollarded trees ranged from moderate to high. The SPAD reading, shoot height and number tillers were significantly (p < 0.05) higher under non-pollarded trees compared to under pollarded trees of same distances. Thus, Pollarding F. albida reduced tree growth, wheat productivity, and understory microclimate conditions.

Faidherbia albida树因其逆向生长的物候学而对大多数作物产生积极影响而闻名。本研究旨在调查授粉F. albida对树木生长、小麦生理性能和土壤条件的影响。该研究于2015年6月至2016年10月在埃塞俄比亚半干旱地区埃杰萨乔罗进行。对每根树枝的小叶进行评分。测量了液流体积和径向形成层生长。实验设计是从三个方向和不同距离对未授粉和授粉树下的1m ²区域进行的。测量土壤湿度、光合有效辐射（PAR）、空气温度和相对湿度（RH）。分析了土壤理化性质。测量了小麦的生长和生理学。2016年1月，当树完全长叶时，未授粉的树液量为4590 L月^{-1 。}尽管树间和树内每根小枝的小叶存在时空差异，但在研究期间没有观察到完全相反的叶子物候学。形成层生长受到授粉F. albida的影响。无花粉条件下的 PAR 水平和正午气温分别降低了 77% 和 6%。另一方面，未授粉条件下干旱期相对湿度和7月土壤湿度分别高出15%和42%。在未授粉的树木下发现的大多数土壤常量营养素的范围从中等到高。 与相同距离的授粉树木相比，未授粉树木的SPAD 读数、芽高和分蘖数显着较高 ( p < 0.05)。因此，Polarding F. albida会降低树木生长、小麦生产力和林下小气候条件。