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Increased soybean tolerance to water deficiency through biostimulant based on fulvic acids and Ascophyllum nodosum (L.) seaweed extract
- Source :
- Scopus, Repositório Institucional da UNESP, Universidade Estadual Paulista (UNESP), instacron:UNESP
- Publication Year :
- 2020
-
Abstract
- Made available in DSpace on 2021-06-25T10:16:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) To meet the growing demand for soybean it is necessary to increase crop yield, even in low water availability conditions. To circumvent the negative effects of water deficit, application of biostimulants with anti-stress effect has been adopted, including products based on fulvic acids and Ascophyllum nodosum (L.) seaweed extracts. In this study, we determined which formulation and dosage of a biostimulant is more efficient in promoting the recovery of soybean plants after stress due to water deficit. The experiment was conducted in a greenhouse, in a double-factorial randomized block design with two additional factors, four repetitions and eleven treatments consisting of three biostimulant formulations (F1, F2 and F3), and three dosages (0.25; 0.50 and 1.0 kg ha−1); a control with water deficit and a control without water deficit. Soybean plants were kept at 50% of the pot's water capacity for three days, then rehydrated and submitted to the application of treatments with biostimulant. After two days of recovery, growth, physiological, biochemical and yield parameters were evaluated. All plants that received the application of the biostimulant produced more than the water-stressed control plants. The biostimulant provided higher photosynthetic rates, more efficient mechanisms for dissipating excess energy and higher activities of antioxidant enzymes. Plants treated with biostimulant were more efficient in the recovery of the metabolic activities after rewatering, resulting in increased soybean tolerance to water deficit and reduced yield losses. The best result obtained was through the application of formulation 2 of the biostimulant at a dosage of 0.25 kg ha−1. Laboratory of Ecophysiology Applied to Agriculture School of Agricultural Sciences São Paulo State University (UNESP) Laboratory of Ecophysiology and Crop Production Federal Goianian Institute (IF Goiano), Campus Rio Verde Fertilizers Heringer Laboratory of Ecophysiology Applied to Agriculture School of Agricultural Sciences São Paulo State University (UNESP)
- Subjects :
- 0106 biological sciences
0301 basic medicine
Antioxidant
Dose
Physiology
medicine.medical_treatment
Randomized block design
Bioprotection
Gas exchanges
Greenhouse
Plant Science
Photosynthesis
01 natural sciences
03 medical and health sciences
Antioxidant activity
Genetics
medicine
Benzopyrans
Ascophyllum
biology
Dehydration
Abiotic stress
Chemistry
Plant Extracts
Crop yield
Glycine max (L.) merrill
food and beverages
Water
biology.organism_classification
Seaweed
Anti-stress effect
Horticulture
030104 developmental biology
Soybeans
010606 plant biology & botany
Subjects
Details
- ISSN :
- 18732690
- Volume :
- 158
- Database :
- OpenAIRE
- Journal :
- Plant physiology and biochemistry : PPB
- Accession number :
- edsair.doi.dedup.....bc6007366969de4484a40997663a2c7f