Clomazone exposure-driven photosynthetic responses plasticity of Pontederia crassipes.

Clomazone is known to contaminate aquatic environments and have a negative impact on macrophytes. However, recent reports suggests that Pontederia crassipes Mart. can withstand clomazone exposure while maintaining growth rates.

Effects and productive performance of urban agriculture on collective and environmental health in the city of Rio de Janeiro, Brazil.

Urban agriculture may help promote key indicators, such as improvement of environmental health and food security and reduction of social inequality. The present article aims to help understand the current situation of urban agriculture in the city of Rio de Janeiro by focusing on the Hortas Cariocas Program (HCP). To this end, two approaches were adopted.

Alkaloids (emetine and cephalin) production - affected by full sunlight stress in .

This study evaluated the responses of to sunlight stress-induced changes in the electron transport chain and its extended effects on alkaloid production (emetine and cephalin). The treatments consisted of: (i). 50, 70, and 90% shading (controls) and their respective exposure to full sunlight; besides, full sunlight (55 days of direct sun exposure).

Biological pilot treatment reduces physicochemical and microbiological parameters of dairy cattle wastewater.

The objectives of the present study were to characterize and evaluate a pilot treatment unit (PTU) for dairy cattle wastewater (DCW) in relation to its efficiency in reducing the physicochemical and microbiological parameters and possible application of this fertilizer in organic production. A PTU was set up, composed of the following elements: a dung pit of 7.8 m, already in place; a septic tank; a set of anaerobic biological filters comprising an upflow filter and a downward-flow filter filled with fragments PVC corrugated conduit; and two constructed wetland systems (CWSs) of horizontal subsurface flow in two parallel routes (Routes 1 and 2), controlled by means of a flow rate divider box.

Potassium supply promotes the mitigation of NaCl-induced effects on leaf photochemistry, metabolism and morphology of Setaria viridis.

Soil salinity has the potential to severely affect crop performance. To maintain cell functioning and improve salt tolerance, the maintenance of K homeostasis is crucial in several plant metabolism processes. Besides, potassium fertilization can efficiently alleviate the perilous effects of salinity.