The Effect of Organic and Mineral Fertilizers on Growth and Productivity of Some Quinoa )Chenopodium quinoa Willd.( Cultivars

Abstract

The research was carried out at the Qarhta Research Station of the General Commission for Scientific Agricultural Research (GCSAR), Syria, during 2021-2022 season, with the aim of studying the effect of adding organic fertilizers on the growth and productivity of some quinoa cultivars compared to chemical fertilizers, depending on some morphological and quantitative traits. The experiment was laid out according to randomized completely block design (RCBD) in split plot arrangement with three replications. where the cultivars are in the main plots and the fertilization treatments are in the split plots. Experimental factors included three varieties (Giza, Red Carina, Q₂₆) and three fertilization treatments. The results of statistical analysis showed significant differences (P≤0.05) among studied varieties, fertilization treatments and interaction between verities and fertilization treatments for all investigated traits. Cultivar (Red Carina) was superior in most of the studied yield traits (number of branches per plant, grain weight per plant, grain yield, biological yield and harvest index). whereas, cultivar (Q₂₆) was superior in both the main bunch length and width. The chemical fertilization treatment excelled in (plant height, main bunch length, number of branches per plant, leaf area index). While the response was higher when using organic fertilization (vermicompost) in terms of (grain weight, thousand grain weight, grain yield, biological yield, and harvest index). The results indicate the role of both organic fertilizer (vermicompost) and bio-fertilizer as a supplement and alternative fertilizer that is safer on the environment, in addition to it’s positive impact on yield and their functions, which contributes to reducing the added and consumed quantities of chemical fertilizers and thus reducing it’s negative effects.