Effect of Organic Fertilizer Bio Health and Nano Calcium on the Growth and Yield of Fig Trees Ficus carica L. c.v Waziri under Greenhouse Conditions

This experiment was undertaken on one of the private farms in the village of Kani Sard in the Sharbazhir district near the Sitak area, which is approximately 35 km northeast of the center of the Sulaymaniyah Governorate - Iraq, It was designed to study the effect of adding biostimulants and non-fertilizers, individually and in combination, on 54 homogeneous fig trees (Ficus circa L. C.v Al-Waziri), three years old, grown under the plastic house. In addition, the treatments consisted of control, added organic fertilizer (Bio Health) at three levels (0, 15, 30) gm. tree-1 into the soil, and sprayed with nano calcium at three levels (0, 75, 150) mg. L-1 on the trees. A randomized complete block design (RCBD) with three replications was performed in a factorial.Several basic characteristics were assessed, including leaf area, chlorophyll concentration, leaf dry matter content, fruit size, fruit weight, total soluble solids content, and total acidity content. The results revealed that treatments, including combining the two greatest concentrations of organic fertilizer and nano calcium, were optimal, confirmed progress leaf area, chlorophyll content, and improved leaf dry matter content. The quality of the fruits also significantly increased in terms of size, weight, and total soluble solids content (TSS), which reflected positively on the taste and storage quality, while total acidity decreased which made the fruits more appealing for consumption. The study advises using Bio Health organic fertilizer with nano-calcium spraying as an integrated approach to improving fig tree productivity and fruit quality, especially in protected situations, to achieve sustainable agricultural returns.