SodininkyStĖ ir darŽininkyStĖ 27(3)

SODININKYSTĖ IR DARŽININKYSTĖ. SCIENTIFIC ARTICLES. 2008. 27(3).Investigation of fruit and berry plant nurtitionJ. LanauskasSummaryThe review presents results of fruit and berry plant nutrition experiments carried out atthe Lithuanian Institute of Horticulture during last two decades. Phosphogypsum increasedapple tree yield both in alkaline and acid soils. Phosphogypsum was recommended for orchardfertilizing as a source of calcium and sulphur. Foliar applied calcium fertilizers in theyears favourable for bitter pit development decreased apple bitter pit incidence during storage.For everbearing raspberries 90–120 kg ha -1 of nitrogen (N) and 130–180 kg ha -1 of potassium(K 2O) was recommended annually. Foliar applied iron fertilizers increased raspberry andstrawberry leaf iron content but did not effect plant growth and yield. Foliar applied complexfertilizers with micronutrients had not positive effect on strawberries grown in fertile soil.Nitrogen nutrition of apple trees was influenced by soil agrochemical composition.Apple trees of cv. ‘Vytenis’ on rootstock MM.106 grown in the soil rich with humushad optimal leaf nitrogen content whereas the ones in low humus soil suffered nitrogendeficiency. 100 kg ha -1 of nitrogen (N) applied annually improved growth, yield, fruitquality and increased leaf nitrogen content of nitrogen deficient apple trees on rootstock M.9.In ecological experiments it was established that apples from trees grown closeto the roads with heavy traffic had increased content of chromium and plumbum.They were accumulated in peel and central part of apple close to the seeds.Key words: fertilizers, apple trees, raspberries, strawberries, phosphogypsum, nitrogen,potassium, calcium, iron.125