Responses of Two Red Cabbage Hybrids to Nano NPK and Zinc Fertilizers (Brassica oleracea L. var. capitata rubra)

Abstract

The experiment was indicated in the field condition at protected cultivation Department/ in Zakho Technical Institute/Dohuk Polytechnic University, Kurdistan Region/Iraq, during the winter growing season (2021-2022), which aimed to investigate the effectiveness three levels of nano NPK (0, 1 and 2 g l-1) and three level of Zinc fertilizers (0, 2 and 4 g l-1) on growth and yield of two red Cabbage hybrids (Brassica oleracea L. var. capitata rubra) plants. Results showed that the Zeina hybrid plants superior to Tropicana hybrid in all parameter weight of plants, number of Leaves per Head, Weight of head, head circumstances, head length and total yield. While the plants treated with and 1 g l-1 nano NPK fertilizers had significantly influenced on number of leaves per head, weight of plants, weight of head, head circumstance, total yield, when compared with control. Additionally, increased concentrations of nano NPK fertilizers sprayed on plants to 2 g l-1 caused a significantly increase of weight of head and stem diameters. Furthermore, the plants sprayed with 4 g l-1 Zinc fertilizers had significantly affected on number of leaves per head, weight of head, stem diameter and total yield. Whereas, head weight and length of head significantly increased when plants treated with 2 g l-1 Zinc fertilizers. Further research is needed to investigate whether the other cabbage cultivar and higher concentrations nano NPK and Zinc fertilizers than used in this research will give the better parameters.