Effect of spraying organic fertilizer extract and hydrous zinc sulphate on some quality growth and yield of Jerusalem artichoke plant Helianthus tuberosus L.

Abstract

An experiment was conducted in one of the agricultural field in Kerbala province during agricultural season 2017 to study the effect of spraying organic fertilizer extract and hydrous zinc sulphate on growth and yield parameters of Jerusalem artichoke plant. Experiment was conducted by Randomized Complete Block Design(R.C.B.D) with three replicates in two factors. First spraying two concentrations of organic fertilizer extract i.e.(0 and 500)ml.L-1. Second spraying of hydrous zinc sulphate ZnSO4.7H2O (35% Zn) in three concentrations i.e.(0, 4 and 6)g.L-1 . Organic fertilizer extract and hydrous zinc sulphate spraying were done twice, first after one month form planting, second after two month from first sprayer .Means were compared by using the Multiple Range Test Duncan test at probability of 0.05. Results showed that spraying organic fertilizer extract or hydrous zinc sulphate significantly effect in all growth and yield parameters of Jerusalem artichoke. From the interaction between two factors,the results showed that spraying organic fertilizer extract and hydrous zinc sulphate at a concentration 4g. L-1 increased significantly plant height, shoot dry weight per plant to 265.67cm and 961.40gm.plant -1 compared to control treatment which gave the lowest values 180.33cm and 632.90 gm.plant -1 respectively. Meanwhile spraying organic fertilizer extract at a concentration 500ml. L-1 and hydrous zinc sulphate at a concentrations 6g. L-1 gave the highest percentage of tuber dry weight, number of tuber per plant and plant yield to 22.45%, 35.68 tuber and 1486.61gm, compared to control treatment( spraying with distilled water only) which gave the lowest values 20.47%, 632.9031.05 tuber and 1180.00gm respectively.