Merremia emarginata plants were treated with different plant growth regulators (PGRs): naphthyl acetic acid (NAA), phenyl acetic acid (PAA) and gibberellic acid (GA 3). To determine the role of wall stiffening enzymes in internode elongation, IAA oxidase and peroxidase in the presence of different hydrogen donors like caffeic acid, chlorogenic acid and guaiacol were assayed. The levels of total...

ABSTRACT A great challenge of scientific research with carrot in semi-arid regions is obtaining the best productive characteristics and economic conditions by optimizing green manure amounts using spontaneous species from Caatinga biome, such as hairy woodrose (Merremia aegyptia L.) roostertree (Calotropis procera Ait.). Therefore, this work aimed to agronomically economically optimize producti...

The broadleaf vegetables require large amounts of nutrients to provide a high productivity, and quality products, mainly due their short period development growth. green manuring has emerged as viable alternative these requirements for vegetables, from spontaneous species in the Caatinga biome. Thus, aim this study was evaluate estimate maximum physical economic efficiencies lettuce arugula agr...

ABSTRACT Given the lack of information on use spontaneous plants from Caatinga biome as green manure to produce grains, present work aimed agronomically and economically optimize cowpea production for grains their components when fertilized with equitable biomass amounts hairy woodrose (Merremia aegyptia L.) roostertree (Calotropis procera Ait.) in two cropping seasons a semi-arid environment. ...