Seaweed extracts are agricultural biostimulants that have been shown to increase the productivity of many crops. The aim of this study was to determine the effect of a seaweed extract from the brown algae Durvillaea potatorum and Ascophyllum nodosum as a soil treatment on the yield of wine grapes grown in Australian production and climate conditions. This study used a series of seven field experiments (2012–2017), across five locations, in three Australian states and four cultivars, and analysed data using a linear mixed model approach. The analysis revealed that recurring soil applications of the seaweed extract significantly increased wine grape yield by an average of 14.7% across multiple growing years that experienced climate extremes. Partial budget analysis showed that the use of the seaweed extract increased profits depending on the grape cultivar. This study is the most extensive investigation of its type in Australian viticulture to understand the effect of a soil-applied seaweed extract on wine grape production.

The heathers of Europe and adjacent areas. Andromeda polzfolia, Bruckenthalia spiculifolia, Calluna vulgaris, two species of Daboecia, 19 of Erica with five subspecies and seven natural hybrids are discussed. Comment is chiefly given on E . andevalenszs, E . maderensis and the group currently denominated: E . anthura, E . manipuliflora, E . multtjora and E . vagans. Two new combinations are made.

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The type specimens of Encn Ci/Zarti, E. tetralix and of E . x watsonu are located. The variant of E. cilzaris without glandular hairs o n its stems and leaves is chosen as the lectotype of the species; the lecrorvpe o1 t;. /r/ralzx ia glandular-haired, as is that ofE. x watsonii.

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