The bio-organic nano fertilizer improves sugar beet photosynthesis process and productivity

Abstract

Applications of biological agents intensify the growth of crops, so they more quickly form a maximum leaf area, optimize photosynthesis, increase plant productivity and quality. Chemical producers offer a new generation of bio-organic fertilizers based on nano technologies. Such fertilizers have not been well investigated yet; therefore, the aim of this study was to ascertain the influence of the fertilization rates by bio-organic nano fertilizer, made from cattle manure on the effectiveness of sugar beet crop photosynthesis and productivity parameters. The investigations were carried out in 2011-2012 at Aleksandras Stulginskis University's Research Station, Kaunas district, Lithuania (54º52′ N, 23º49′ E) on a silty loam Luvisol (Calcari-Epihypogleyic Luvisol, LVg-p-w-cc). Sugar beet plants were sprayed with the fertilizer at doses of 0.5 or 1.0 L ha -1 at the BBCH 18 and/or BBCH 31 stages. Single application of the bio-organic fertilizer at single 1 L ha -1 dose was more effective than at single 0.5 L ha -1 or double 0.5 + 0.5 L ha -1 doses. At the beginning of intensive sugar beet development (BBCH 37-38), single 1 L hadose increased the number of leaves by 19.6%, leaf area by 13.4%, root diameter by 11.1%, canopy dry biomass by 29.1%, root biomass by 42.6%, net photosynthetic productivity by 15.8%, root yield by 12.6%, sucrose content by 1.03 percentage points and yield of white sugar by 19.2% in comparison with the untreated beets. Double 1 + 1 L ha -1 dose of fertilizer was slightly more effective but economically less suitable than single (1 L ha -1 ). In general, the application of bio-organic fertilizer revealed a great potential for optimization of sugar beet development, productivity and quality parameters.

Smectite clay pillared with copper complexed polyhedral oligosilsesquioxane for adsorption of chloridazon and its metabolites

“…3,4 Chloridazon, a selective systemic herbicide used for the control of annual broadleaf weeds, has been widely employed especially in sugar-beet cultivation since it was considered to be a relatively non-harmful herbicide. 5 Its degradation leads to the formation of desphenyl-chloridazon and methyl-desphenyl-chloridazon; 6 the former, produced by aerobic degradation in soil, is predominant. According to European regulations, the maximum residue limit for herbicides is 0.1 μg L −1 for single compounds and 0.5 μg L −1 for the sum of all herbicides.…”

Highly Efficient Remediation of Chloridazon and Its Metabolites: The Case of Graphene Oxide Nanoplatelets

“…1,2 Chloridazon, a herbicide that inhibits the photosynthesis process in annual broad-leaf weeds, has been widely used in the past several decades because it was considered as relatively harmless. 3,4 The degradation of chloridazon generates two metabolites, desphenyl-chloridazon and methyl-desphenyl-chloridazon. 5,6 Due to their polarity and solubility, they are regarded as mobile compounds, which cause surface water and groundwater pollution.…”

From an Empirical to Conceptual Modeling View of Energy Crop Productivity

“…These plants grow rapidly and create a large biomass, although because of economic and ecological reasons, they are grown in poorly cultivated soils (McKendry, 2002a;Jakienė et al, 2015;Allen et al, 2014). Not only is productivity important while growing such plants, but also their ecological impact, i.e.…”