Four postemergence herbicides were applied during the harvest season to an established asparagus crop. The spears were harvested every alternate day for 3 weeks after treatment, counted, assessed for quality and production, and analysed in the laboratory for presence of herbicide residues. The suggested use rates of clopyralid and dicamba caused little damage to spears and their residues in the...

This study presents a comparison of the usual statistical methods used for crop model assessment. A case was conducted using data set from observations total dry weight in diploid potato crop, and six simulated sets derived observationsaimed to predict measured data. Statistical indices such as coefficient determination, root mean squared error, relative index agreement, modified revised modeli...

ABSTRACT: Crop residues decomposition are controlled by chemical tissue components. This study evaluated changes on plant components, separated the Van Soest partitioning method, during cover crop decomposition. The soluble fraction was first to be released from residues, followed cellulose and hemicellulose. Lignin residue component that suffered least degradation, for certain types, lignin de...

Solving traction force and energy consumption problem in crop production, the use of strategically selected bioproducts can change physical properties soil influence changes during tillage technological operations. The aim this work was to investigate different biopreparations on soil, winter wheat residues machine shallow tillage. In spring, after resumption vegetation, seven their mixtures we...

Crop residues such as corn (Zea mays L.) stover are viewed as an abundant and inexpensive source of biomass that can be removed from fields to produce bioenergy. Assumptions include that with minimum or no-tillage farming methods, there will be no deleterious production or environmental effects. A long-term field study was established in eastern Nebraska, USA, to compare the switchgrass managed...

Abstract Purpose In recent years, considerable research has been conducted on the use of plant growth regulators (PGRs) to improve crop yields. Large amounts PGRs are applied regulate growth. However, few studies have assessed impact PGRs, which leave soil residues, microorganisms, especially rhizobia. Methods this study, influence inoculation soybean roots with Sinorhizobium fredii and Bradyrh...

In this assay, edible cattle tissues from local markets of Ardabil, a Province of Iran, were examined for residues of tetracycline antibiotics (tetracycline, oxytetracycline and chlortetracycline). In total, 110 samples of triceps, gluteal muscle, diaphragm, kidney and liver were randomly obtained from the local markets of the city of Ardabil. Solid-phase extraction (SPE) and high-performance l...

Biochar is an effective means to withdraw carbon dioxide (CO2) from the atmosphere and consequently influence the trend of global climate change. However, there still are substantial knowledge gaps for this idea to be applicable. One big question is how to produce biochar from biomass on a large scale. Our idea is to use biogas produced from agricultural wastes as thermal energy for biochar pro...

in order to evaluate the effect of nitrogen (n) and seeding rate and presence of rapeseed residues on yield and yield components of wheat, a field experiment was conducted in cropping year 2011- 12 at college of agriculture, shiraz university (badjgah), shiraz, iran as split-split plot arranged in randomized complete blocks design with three replications. treatment included presence and absence...