Saldo un skābo ķiršu pētījumi:

• ģenētisko resursu izpēte un selekcijas materiāla izvērtēšana,
• šķirņu, potcelmu un audzēšanas sistēmu pārbaude,
• ziemcietības pētījumi.

Nozīmīgākās publikācijas:

• G. Bujdosó, K. Hrotkó, D. Feldmane, D. Giovannini, H. Demirsoy, R. Tao, S. Ercisli, N. Ertek and S. Malchev (2020) What kind of sweet cherries do the final consumers prefer? South Western Journal of Horticulture, Biology and Environment Vol.11 (1): 37-48 
• D. Feldmane, I. Druva-Lūsīte, V. Pole, M. Butac, M. Militaru, I. Missa, D. Meiere, E. Rubauskis (2020) Rhizophagus irregularis MUCL 41,833 association with green cuttings of Prunus sp. rootstocks. Journal of Plant Growth Regulation. DOI 10.1007/s00344-020-10116-1 
• Feldmane D., Ruisa S., Pole V., Militaru M., Butac M. (2017). Fruit set of several sour cherry cultivars in Latvia influenced by weather conditions before and during flowering. Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences vol. 71(3): 178-183
• Pole V., Feldmane D., Ruisa S. (2017). Estimation of chlorophyll and nitrogen status in sour cherries grown with woodchip mulch and drip irrigation. Acta Horticulturae 1161: 435-442
• Feldmane D., Ruisa S., Rubauskis E., Kaufmane E. (2016). Winter hardiness of sour cherries influenced by cultivar and soil moisture treatment. Acta Horticulturae 1130: 111-116
• Feldmane D. (2014) Drip irrigation and woodchip mulch influence on growth and yield of young sour cherries. Acta Horticulturae 1038: 531 – 537.
• Feldmane D., Samsone I., Krasnova I. (2013) Assessment of sour cherry (Prunus cerasus L.) cultivars in Latvia. Acta Horticulturae 976: 115 - 120.
• Feldmane D., Ruisa S., Krasnova I. (2012) Effect of cultivar and growing system on the biochemical composition of sour cherries (Prunus cerasus L.) grown in Latvia. Acta Horticulturae 932: 239 – 244.
• Feldmane D. (2010) Precocity of sour cherry cultivars influenced by using woodchip mulch and drip irrigation. Proceedings of 16th annual international scientific conference “Research for Rural Development 2010”/ Latvia University of Agriculture, p. 48 – 55.
• Feldmane D., Ruisa S. (2008) The estimation of some sweet cherry (Prunus avium L.) hybrids at the Latvia State Institut of Fruit Growing. Proceedings of international scientific conference „Suistainable Fruit Growing: From Plant To Product”/ Latvia State Institute of Fruit Growing, p. 38 – 43.