Effect of the Bio and Organic Fertilizer on Rapeseed Yield in Central Cropping Region of Mongolia

Abstract

The research work was carried out in 2022-2023 at the field of experience of Institute of Plant Agricultural and Science located in Hongor sum of Darkhan-Uul province.

The purpose of the study is to improve the quality and yield of rape seeds by applying fertilizers in accordance with the biochemical characteristics of rapeseed in the conditions of the central agricultural region. The innovative aspect of the research work is to test the quality and yield of rapeseed new types of fertilizers (Darkhan humate, Darkhan Rizo, mixed) and determine the appropriate rate and time.

Since 2001, the soil microbiology laboratory of Institute of Plant Agricultural and Science has produced rhizobacterial fertilizers in dry form in laboratory conditions, containing local active strains (Azospirilum brasilense, Azoarcus sp, Azotobacter chroococum) that absorb air nitrogen into the soil and break down indigestible phosphorus into the soil. The conditions and opportunities for high yield have been created.

According to the results of the analysis conducted in the Soil &Agrochemical laboratory of Institute of Plant Agricultural and Science , the composition of "Darkhan Humate" organic fertilizer contains an average of 22.6% humic acid, 20.4% fulvic acid, and 4 types of macro elements that play an important role in plant nutrition: NPK (13-21-13%), sulfur S - 7.5%, 10 types of macro &micro elements: calcium Ca – 1.12%, magnesium Mg – 0.69%, sodium Na – 2.7%, silicon Si – 2.1%, iron Fe – 0.7%, manganese Mn – 0.2%, cobalt So – 0.015%, zinc Zn – It contains not less than 0.72%, boron B – 0.35%, copper Cu – 0.35%, 2.5% of 18 types of plant-derived amino acids, and 0.05-0.1% of auxin or 3 types of hormones that increase the national development and green mass of plants [4]. In the current situation of deteriorating soil fertility in Mongolia, the yield of rapeseed is still low and the oil content is still low due to the lack of nutrients. Therefore, a study was conducted to investigate the effect of using a mixture of bio and organic fertilizers on crop yield and quality.