FIELD PERFORMANCE OF POTATO TREATED WITH ECO-FRIENDLY FERTILIZERS TECHNIQUES

:A field experiment was conducted during the spring growing season of 2022–2023 at the research stations, College of Agricultural Engineering Sciences, University of Baghdad. The study aimed to evaluate the impact of foliar application of eco-friendly fertilizers on the field performance and the quantitative and chemical yield characteristics of potato plants (Arizona hybrid). The experiment included two factors: the first involved foliar spraying with four treatments—water only, 5 mL L⁻¹ shrimp shell extract, 5 mL L⁻¹ dried fish extract, and 5 mL L⁻¹ sardine extract—coded as F0, F1, F2, and F3, respectively. The second factor included spraying with three concentrations of organic silicon: 0, 1, and 2 mL L⁻¹, coded as Si0, Si1, and Si2, respectively, along with their interactions. The research was implemented as a factorial experiment following a Randomized Complete Block Design (R.C.B.D.) with three replications. The results indicated that treatment (F1) resulted in the highest values for the number of aerial branches, marketable plant yield, number of tubers, tuber weight, and total soluble solids (T.S.S.).Treatment Si1 resulted in tubers with the highest yield, dry matter content, and specific gravity. The interaction treatment F1Si2 produced the highest number of tubers, while F2Si2 yielded the firmest tubers.