this experiment was carried out to study effects of mechanical and chemical treatments for developing lateral shoot and increasing quality of sweet cherry, apple and pear trees in 2010-2011 in three independent experiments. in the first experiment, effect of the heading treatments in four levels (‍control, 40, 60 and 80 cm), in the second experiment, ba treatments in four levels (0, 200, 400, 6...

ABSTRACT- To study the effect of tree roots on increasing water infiltration in soil and also to determine and assess the coefficients of different infiltration models, some infiltration tests were performed in three tree plantation areas in Badjgah, Fars province with different soil textures (clay loam for pear plantation, sandy loam for grape plantation, loamy sand for pine trees). In each pl...

We analysed Pyrus communis cv. Conference and Cydonia oblonga BA29, differently tolerant to lime-induced chlorosis, to identify the key mechanisms involved in their different performance under Fe deficiency induced by the absence of Fe (-Fe) or by the presence of bicarbonate (+FeBic). Under our experimental conditions, a decrease in root elongation was observed in BA29 under bicarbonate supply....

Information is provided about the new book of second volume «Pomology», prepared at VNIISPK with participation breeders and cultivars leading horticultural institutions in Russia. The was published under general editorship Academician Russian Academy Sciences E.N. Sedov Doctor Agricultural E.A. Dolmatov, republished additions end 2022 expense Sciences. In updated «Pomology» «Pear. Quince» addit...

The effects of placing solid implants containing Fe sulfate in branches of Fe-deficient pear and peach trees on the composition of the xylem sap have been studied. Iron sulfate implants are commercially used in northeastern Spain to control iron chlorosis in fruit trees. Implants increased Fe concentrations and decreased organic acid concentrations in the xylem sap, whereas xylem sap pH was onl...

Rootstocks of the genus Pyrus are easily adapted to climatic conditions and such trees more resistant Erwinia amylovora, but they also have disadvantages because these lush difficult grow in dense composition. The production pears a composition is tendency intensive pear production, quince rootstocks used for this purpose, it easier control height stem.
 increase density orchards directly ...

Abstract Background and Aims: Hop stunt viroid (HSVd, genus Hostuviroid, family Pospiviroidae) has a wide host range among trees and herbaceous plants. The objectives of this study were to compare biological and physical characteristics of three isolates of HSVd from mulberry, fig and citrus and search for other hosts of this viroid in Iran. Materials and Methods: Plant samples were col...