616 documents found, page 1 of 62
Methylobacterium symbioticum Applied as a Foliar Inoculant Was Little Effective...
Arrobas, Margarida; Correia, Carlos M.; Rodrigues, M.A.Nitrogen (N) is a limiting ecological factor for plant growth in most agroecosystems. Biological N fixation, especially from nodulated legumes, has been promoted in recent decades as an alternative or complement to industrially synthesized N fertilizers. The possibility of utilizing N-fixing organisms from the phyllosphere that demonstrate effectiveness across a wide range of crops is particularly exciting. In ...
Foliar application of biostimulants improves nutritional and bioactive quality ...
Pascoalino, Liege; Pires, Tânia C.S.P.; Pinela, José; Rodrigues, M.A.; Ferreira, Isabel C.F.R.; Barros, Lillian; Barreira, João C.M.; Reis, Filipa S.Owing to their health benefits, walnuts are attracting interest as a good option for nutritious meals, thereby promoting their production. Furthermore, the adoption of ecologically and environmentally friendly agriculture strengthens biostimulant use as a sustainable complement to traditional fertilizers. This study evaluated the effects of different foliarapplied biostimulants in walnut tree orchards, in north...
Different Species and Cultivars of Broad Beans, Lupins, and Clovers Demonstrate...
Aguiar, Peltier; Arrobas, Margarida; Nharreluga, Ézar Alfredo; Rodrigues, M.A.The success of growing legumes as green manure depends on their spatial and temporal integration within agroecosystems, which minimizes competition with cash crops, and on their nitrogen (N) fixation potential. This study evaluated seven legume species for biomass production, N fixation, and suitability for use in cropping systems in northern Portugal. Oats (Avena sativa L.) were grown to estimate the N fixatio...
Ground Management Through Grazing in Rainfed Olive Orchards Provides High Olive...
Dimande, Paulo; Arrobas, Margarida; Correia, Carlos M.; Rodrigues, M.A.Soil management in orchards can have several economic and environmental implications. In this study, three different soil management systems were compared in a dry-farmed olive grove: conventional tillage (tillage), glyphosate-based herbicide (herbicide) and sheep grazing. The experiment lasted eleven years (2011-2022) and was carried out after a previous trial conducted on the same plot with the same treatment...
Assessing the Effect of Plant Biostimulants and Nutrient-Rich Foliar Sprays on ...
Roque, João; Carvalho, Ana; Rodrigues, M.A.; Correia, Carlos M.; Lima-Brito, JoséThe cultivation of walnuts (Juglans regia L.) has become increasingly popular worldwide due to the nutritional value of the nuts. Plant biostimulants (PBs) and nutrient-rich products have been increasingly used in agriculture to improve yield, quality, and abiotic stress tolerance. However, farmers need fast laboratory studies to determine the most suitable treatment per crop or ecosystem to take full advantage...
Differential responses of photosynthesis, yield and soil properties 4 years aft...
Martins, Sandra; Brito, Cátia; Gonçalves, Alexandre; Moutinho-Pereira, José; Pereira, Ermelinda; Arrobas, Margarida; Rodrigues, M.A.; Nunes, FernandoOlive orchards represent a key agricultural system in the Mediterranean Basin. Soil degradation processes associated with unsustainable agronomic practices and climate change could severely impact the sustainability of Mediterranean rainfed olive orchards. In this context, soil amendments are important tools that can be used to enhance soil fertility for sustained environmental quality and plant performance. In...
Reduced Effect of Commercial Leonardite and Seaweed Extract on Lettuce Growth u...
Aguiar, Peltier; Corrêa, Gediane Maria Garcia; Rodrigues, M.A.; Arrobas, MargaridaIn this study, two commercial products based on the main groups of contemporary biostimulants—a commercial leonardite and a seaweed extract—were tested with the objective of assessing the conditions under which they can enhance lettuce (Lactuca sativa L.) performance, particularly to determine if synergies with conventional fertilization methods can be observed. The experimental protocol was arranged as a facto...
Intercropped Maize and Cowpea Increased the Land Equivalent Ratio and Enhanced ...
Dimande, Paulo; Arrobas, Margarida; Rodrigues, M.A.Sub-Saharan African smallholder farmers face challenges due to limited access to commercial fertilizers, affecting food security. Exploring the benefits of intercropping is promising, but evaluating crop performance in specific agroecological contexts is crucial. This study in Vilankulo, Mozambique, conducted over two growth seasons (2018 and 2019), aimed to assess the benefits of intercropping maize (Zea mays ...
Nitrogen Fixation and Growth of Potted Olive Plants through Foliar Application ...
Rodrigues, M.A.; Raimundo, Soraia; Correia, Carlos M.; Arrobas, MargaridaGiven the importance of biological nitrogen (N) fixation in agroecosystems, using inoculants with phyllosphere N fixers effective across various crops would revolutionize agriculture. In this study, the application of an inoculant prepared from Methylobacterium symbioticum was tested on young olive trees. The pot experiment was arranged in a factorial design, with inoculant (Yes and No) and mineral N applied to...
The Application of a Foliar Spray Containing Methylobacterium symbioticum Had a...
Rodrigues, M.A.; Correia, Carlos M.; Arrobas, MargaridaIn this study, the effectiveness of an inoculant containing a nitrogen (N)-fixing microorganism (Methylobacterium symbioticum) was evaluated on maize (Zea mays L.) grown both in the field (silage maize) and in pots over two years (2021 and 2022). The field trial included the following two treatments: with (Yes) and without (No) the inoculant. The pot experiment was designed as a factorial arrangement with two f...