1,720,964 research outputs found
Nitrogen availability of different slow release fertilizers as determined by incubation in a sand based growing medium
No full textMisura della fotosintesi in campo. (3) Tassi di fotosintesi netta fogliare e curve di risposta a fattori ambientali di alberi da frutto.
No full textVegetative growth, yield and root system conformation in kiwifruit plants obtained by different propagation techniques
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Morphological and anatomical modifications induced by in vitro propagation of kiwifruit plants.
No full textModificazioni indotte da diversi tipi di lavorazione del terreno su alcune caratteristiche chimiche di un suolo Tipic Xerofluvent
No full textPeach rootstocks as affected by selenate addition to soil.
No full textSelenium is known to be non essential for plant growth, but it may have beneficial biological functions in some species, known as ‘accumulators’, which required Se for their normal growth. Selenate and selenite are the major forms readily absorbed by plants and converted to organic Se. Both anions may be toxic at higher concentrations, reducing the plant yield, but can stimulate plant growth at low concentrations. Some soils contain Se above the normal levels and it may produce toxicity in plants. Little is known about the physiological response of fruit-tree species to selenium. The present study aimed at investigating the ability of two peach rootstocks to absorb selenium and the physiological responses to the Se accumulated in plant tissue
Gas exchange characteristics and water relations of kiwifruit vines during drought cycles
No full textInteraction effects of phosphorus and zinc on photosynthesis, growth and yield of dwarf bean grown in two environments
No full textTwo experiments were conducted in a factorial combination of three Zn levels (0, 10 and 40 mg Zn kg-1 soil) and two P levels (0 and 200 mg P kg-1 soil). Experiment 1 was carried out during winter in a heated glasshouse, and experiment 2 during summer under a rain shelter. Plants of dwarf bean (Phaseolus vulgaris L., cv. Borlotto nano) were grown in pots filled with sandy soil. In both experiments, leaf Zn concentration was reduced by the addition of P to plants grown at low Zn supply. However, leaf Zn concentration lower than the critical level was observed only during experiment 2, and the main effects of low Zn were reductions of internode length, light use efficiency and maximum photosynthetic rate. In plants with leaf Zn concentration lower than the critical level, saturating irradiance levels fell from ~1000 μmol m-2 s-1 PPFD to ~300-400 μmol m-2 s-1 PPFD. Reduction of net photosynthesis was observed from the beginning of flowering and led to decreased seed production
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