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1

Effects of different calcium treatments on endocarp lesion disorder and some nut characteristics in Pistacia vera cv. Akbari

100%
Sajadian H.
Electronic Journal of Polish Agricultural Universities. Series: Horticulture
|
2016
|
tom 19
|
nr 1
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Leaf nutrient status of ‘Trakya İlkeren’ grape variety (Vitis vinifera L.) in different phenological stages

84%
Kose B., Horuz A., Akinoglu G.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2018
|
tom 17
|
nr 4
Nutrition of grapevines is very sensitive issue in vineyards. Soil quality is very important matter for growth and quality in vine growing. Rootstocks affect the growth and productivity of grapevine as well as increase or decrease of the nutrient uptake. The present study was conducted to determine the phenological changes of nutrient uptakes in 10 years ‘Trakya İlkeren’ grape variety (Vitis vinifera L.) in the heavy clay soil conditions. The grapevines are grown on 5BB and 5C rootstocks. The changes of macro and micronutrients in leaf blades from bud burst to post harvest period were investigated in the experiment. Leaf nutrient contents of leaf blades show varied depending on the phenological stages and rootstocks (P < 0.01 and P < 0.05). Nitrogen and phosphorus content of leaf blade was decreased until veraison stage for both rootstocks. The highest potassium (K) content was obtained at blooming stage. In blooming stage nitrogen (N), phosphorus (P), potassium (K) and magnesium (Mg) nutrients was found high on 5C rootstock whereas calcium (Ca) was high on 5BB. Grapevines were found insufficient for P, K and Mg nutrients in the study. Total chlorophyll and chlorophyll a/b ratio showed significantly varied among to rootstocks and phenological stages (P < 0.01). While the highest leaf chlorophyll content was measured during flowering period it was found at the lowest through to harvest on both rootstocks. Overall total chlorophyll contents and chlorophyll a/b ratio were significantly higher on 5BB grafted vines. In the research, 5C was found to be more successful rootstock than 5BB for nutrient uptakes.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Growing the endangered species Astragalus nitidiflorus in the nursery: fertilization rate affects growth, and leaf nutrient and chlorophyll contents

84%
Vicente M. J., Martinez-Sanchez J. J., Franco J. A., Banon S.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2018
|
tom 17
|
nr 4
Astragalus nitidiflorus is an endangered legume endemic to the southeast of the Iberian Peninsula. This species develops symbiotic relationships with N-fixing bacteria. However, the problem of isolating its rhizobia has not been solved. Because poor N fixation in plants can be corrected by fertilization, the effect of N-P-K fertilizers on growth, leaf chlorophyll and mineral ions was studied. Plants of A. nitidiflorus were grown in 100%-substrate with different N-P-K fertilizer rates (mg l–1): 1-1-8 (S0), 69-29-35 (SL), 144-43-131 (SM) and 245-58-235 (SH). A treatment with substrate plus soil from the natural habitat and no fertilizers (T0) was included. The reference foliar contents of N, P and K were 42.5, 3.5 and 36.5 mg g–1, respectively. Although the species did not form root nodules when grown in substrate, T0 plants produced active nodules that allowed the plants to grow properly without fertilization. In the absence of nodules, both N fertilization (~144 mg l–1) and Fe fertilization (>12 mg l–1) are vital, as is, to a lesser extent, K fertilization (~75 mg l–1 K2O). The S0 and SL reduced leaf chlorophyll, while SM prevented its degradation.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effects of boron on yield, quality and leaf nutrients of Isabella (Vitis labrusca L.) grape cultivar

67%
Bilir Ekbic H., Gokdemir N., Erdem H.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2018
|
tom 17
|
nr 1
The present study was conducted in 2014 vegetation season in a vineyard of Giresun Hazelnut Research Institute. Isabella (Vitis labrusca L.) grape cultivar were treated with four different boric acid (H3BO3) doses (control, 0.1%, 0.2%, 0.3%) at two different periods (a week before and after full-bloom). The effects of foliar boron treatments on yield, quality and leaf nutrients were investigated. Boric acid treatments positively influenced cluster weight, width and volumes and increasing values were observed with increasing boron doses. Boric acid treatments also influenced berry homogeneity and yielded more homogeneous appearance. Chlorophyll contents increased with increasing boron treatments. The greatest yield, cluster length, cluster volume, cluster size, cluster width, berry width and leaf area were obtained from 0.3% boric acid treatments. In general, leaf nitrogen, phosphorus, calcium, magnesium, zinc and copper concentrations increased, but potassium and iron concentrations decreased with increasing boron doses. As compared to control treatment, all treatments had broader leaf sizes and higher chlorophyll contents. Especially 0.3% boric acid treatments had quite positive influences on quality, size and color homogeneity. Considering the nutrients and pH level of experimental soils, it was concluded that foliar nutrient treatments may support plant growth and development and 0.3% boric acid treatments were recommended for high quality and quantity yields in Isabella grape cultivar.
5

Effects of some plant growth promoting rhizobacteria [PGPR] strains on plant growth and leaf nutrient content of apple

59%
Karakurt H., Aslantas R.
Journal of Fruit and Ornamental Plant Research
|
2010
|
tom 18
|
nr 1
101-110
This investigation was conducted to evaluate the effects of four strains of plant growth promoting rhizobacteria (Agrobacterium rubi A-18, Bacillus subtilis OSU- 142, Burkholderia gladioli OSU-7 and Pseudomonas putida BA-8) on growth and leaf nutrient content of 'Starking Delicious', 'Granny Smith', 'Starkrimson Delicious', 'Starkspur Golden Delicious' and 'Golden Delicious' apple cultivars grafted on semi-dwarf rootstock MM-106. The applications of bacterial strains increased the leaf number and area as well as number of annual shoots and their diameter, although OSU-7 application suppressed annual shoot length. BA-8 application resulted in the highest annual shoot number (52.4) and OSU-142 in the largest leaf area (16.12 cm2). The applications of A-18 bacteria decreased the concentration of N, K and Cu and increased the concentration of P and Zn in the leaves. OSU-142 application resulted in the highest Mg (0.13%) and Fe (32.7 ppm) contents and OSU-7 in the highest Mn content (40.3 ppm). None of the applications affected the concentration of Na and Ca in the leaves.
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