Mildew is an important plant disease, which also infects ornamental tree plants and is often observed in nurseries. Typical disease symptoms are white powdery spots on leaves and other living parts of plants. At the end of the vegetation season, visible chasmothecia develop in the mycelium. The...
Author(s)
Bimšteine, G.; Ļevicka, I.
Publisher
Latvijas Lauksaimniecības Universitāte, Jelgava, Latvia
Citation
Zinātniski praktiskās konferences, "Līdzsvarota lauksaimniecība", Latvia University of Agriculture, Jelgava, Latvia, 22nd February 2018, 2018, pp 98-102
Author(s)
Rupias, A.; Stalazbreve˜s, A.; Strelčūns, R.
Publisher
RPD Science, Dobele, Latvia
Citation
Kokaugu kaitekļu noteicejs pec bojājumiem augļdārzos un apstādījumos, 2014, pp 221 pp.
Research data are summarized to understand mineral nutrient turnover in young stands of birch in different forest growing condition and soil types: Gr Aegopodiosa/alluvial sod-gley soil (ALv); Dm Hylocomiosa/typical sod-calcareous on heavy clay (VKt); Vr Oxalidosa/sod-podzolic soil (PVv); Sl ...
Author(s)
Daugaviete, M.; Korica, A.; Siliņš, I.; Bārdulis, A.; Bārdule, A.; Daugavietis, U.; Spalvis, K.
Publisher
Latvian State Forest Research Institute "Silava", Salaspils, Latvia
Citation
Mežzinātne, 2013, No.27, pp 17-35
Lophodermium seditiosum (Minter, Staley & Millar) is one of the main needle pathogens in forest nurseries and young pine plantations causing Lophodermium needle cast on pines. Every season in forest nurseries Scots pine (Pinus sylvestris L.) seedlings are treated with fungicides to prevent...
Author(s)
Kļaviņa, D.; Ķiesnere, R. D.; Korica, A. M.; Arhipova, N.; Daugavietis, M.; Gaitnieks, T.
Publisher
Latvian State Forest Research Institute "Silava", Salaspils, Latvia
Citation
Mežzinātne, 2012, No.26, pp 167-181
Needlecast (Lophodermium seditiosum Minter, Staley & Millar) is infecting young needles of pines in autumn and causes them to die out and fall of in beginning of next summer. Needlecast epidemics are frequently occurring in nurseries, if efficient fungicides are not used, but may affect young...
Author(s)
Jansons, Ā.; Neimane, U.; Baumanis, I.
Publisher
Latvian State Forest Research Institute "Silava", Salaspils, Latvia
Citation
Mežzinātne, 2008, No.18, pp 3-18
A monograph of the genus Russula in Latvia, with detailed descriptions of 90 species, an identification key, indexes etc. Species of Russula are important mycorrhizal fungi in many forest communities.
Publisher
Avots, Riga, Latvia
Citation
Berzlapes., 1992, pp 204 pp.
KEYWORDS: Acer taxonomy
Citation
Kalmia, Levittown, Pa., 1969, 1, 18-20,
Descriptions, with line drawings of: Wettinia utilis, Virola dixonii, V. reidii, Clusia venusta spp. nov., Inga spectabilis var. schimpfii comb. nov. (I. schimpfii). KEYWORDS: biosystematics \ taxonomy \ floras \ check lists \ biosystematics \ taxonomy \ taxonomic studies \ keys \ Clusia venusta \...
Author(s)
Little, E. L., Jr.
Citation
Phytologia, 1970, 19, 4, pp 251-69
Diploid aspens (Populus tremula) exceeded the triploids in ht., diam., leaf size and stoma length in a study of the anatomical and morphological characteristics of autotriploid aspens (2n = 3x = 57) found in Latvia.
Author(s)
Smilga, J.; Jervekilga, I.
Citation
Jaunakais Mezsaimnieciba, 1978, No. 20, pp 23-32
Observations on natural hybrids of A. incana X A. glutinosa showed that they are found mainly on site classes I or II, in Oxalis, Aegopodium, fern/Carex, or Spiraea forest types. Hybrid vigour is evident-height and diameter growth exceed those of A. glutinosa by 12 and 33% respectively, and those...
Author(s)
Kundzins, A.; Pirags, D.
Citation
Trudy Inst. Lesohoz. Probl., Riga, 1960, No. 20, pp 35-54