تأثير اإلضافة األرضية لحامض الهيومك و الرش الورقي لمعمق الخميرة عمى نباتات الباذنجان )صنف برشمونة( المزروع في البيوت البالستيكية.L melongena Solan

Abstract

This experiment was conducted during grown season 2020-2021 in one of greenhouses in the second research station (Al Bandar) of the College of Agriculture / University of Al-Muthanna, to study the effect of adding humic acid (potassium humate) (0, 5.0, 10.0, 15.0 g L-1) and Foliar application of yeast suspension at three concentrations(0, 5.0, 10.0 g L-1) on eggplant (Solanum melongena L. Barcelona var.), Plants grown in greenhouses under a drip irrigation system. A factorial experiment was carried out according to a randomized complete block design (RCBD) with three replications. Means were compared based on least significant differences (LSD) at 0.05 of probability.The results showed a positive significant effect of each of humic acid and yeast suspension and their interactions in all experimental characteristics under study (N %, Chlorophyll Index (SPAD), TSS % Fruit, Leaf Area, Plant Hight, Branch No., Early Yield), as the results showed that adding humic acid at a concentration of 15.0 g L-1 and yeast suspension at a concentration of 10.0 g L-1 gave the highest values (6.42 %, 66.69 SPAD, 15.21 %, 49.30 dm2 plant-1, 95.77 cm, 5.79, 758.50 g).