title: Yield, Quality, and Nutrient Concentrations of Strawberry (Fragaria ×ananassa Duch. cv. 'Sonata') Grown with Different Organic Fertilizer Strategies.
abstract: Four combinations of two solid organic fertilizers (Monterra Malt and chicken manure) applied before planting and two liquid organic fertilizers (broad bean and Pioner Hi-Fruit/K-Max) given through drip irrigation (fertigation) were compared with inorganic fertilization regarding growth, yield, nutrient concentration, and fruit quality of strawberries. Broad bean fertigation combined with Monterra Malt resulted in a similar fruit yield as inorganic fertilizer and a higher yield than Monterra Malt combined with Pioner; however, total soluble solids, firmness, and titratable acid were improved with Pioner fertigation, although these parameters were more affected by harvest time than the applied fertilizers. The concentrations of most nutrients in fruits and leaves were higher in inorganically fertigated plants. The reductions in fruit yield in three of four treatments and fruit weight in all organic treatments may be due to a combination of the following conditions in the root zone: (1) high pH and high NH4(+)/NO3(-) ratio; (2) high EC and/or high NaCl concentration; (3) cation imbalance; and (4) nutrient deficiency.
authors.affiliation: †Department of Food Science, Aarhus University, Kirstinebjergvej 10, DK-5792 Aarslev, Denmark.
authors.forename: Bhaniswor
authors.initials: B
authors.lastname: Pokhrel
authors.affiliation: §Plant and Soil Science Section, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg, Denmark.
authors.forename: Kristian Holst
authors.initials: KH
authors.lastname: Laursen
authors.affiliation: †Department of Food Science, Aarhus University, Kirstinebjergvej 10, DK-5792 Aarslev, Denmark.
authors.forename: Karen Koefoed
authors.initials: KK
authors.lastname: Petersen
mesh_terms: D000818:Animals; D002645:Chickens; D005308:Fertilizers / Q000032:analysis*; D031985:Fragaria / Q000737:chemistry* / Q000254:growth & development; D005638:Fruit / Q000737:chemistry / Q000254:growth & development*; D008372:Manure / Q000032:analysis; D009753:Nutritive Value; D058871:Organic Agriculture / Q000295:instrumentation / Q000379:methods*
chemical_list: D005308:Fertilizers; D008372:Manure
keywords: fertigation; fruit quality; marketable yield; nutrient concentration; organic fertilizer; strawberry