This investigation was carried out during 2015 and 2016 growing seasons on 12- year- old Le-
Conte pear trees (Pyrus communis L.X Pyrus pyrifolia N.) budded on Pyrus betulaefolia rootstock,
planted at 5 × 5 meters apart (168 trees / feddan) in sandy soil under drip irrigation system and grown
at El-Kassasien Horticultural Research Station, Ismailia Governorate. These study included effected
of soil bio-fertilizers such as Phosphorene, Rhizobacterin and Potassein at 40 g /tree, foliar spray with
Super Amino Bacter at 1.5ml/ litter/tree, foliar spray with Potassium silicate at 8ml/ litter/tree and
foliar sprays of some plant extracts (Roselle, Cinnamon, Ginger) at 5L/tree on fruit set, fruit yield,
physical and chemical fruit quality .The results showed that foliar spray with the three plant extracts
each at 5L/tree (Roselle, Cinnamon and Ginger) associated with soil bio-fertilization was the best one
in this respect. Meanwhile, foliar spray with each individual plant extract at 5L/tree lonely extract
combined with soil bio-fertilization came in the second rank in this respect. Besides, foliar spray with
each individual plant extract as lonely extract at 5L/tree without soil bio-fertilization, as well as foliar
spray with K-silicate at8ml/L and soil bio-fertilization alone were less effective in increasing these
properties and subsequently arranged in the third rank in this respect. On the other hand, the untreated
trees with any of the investigated treatments was the inferior one in this respect as it recorded the least
value of these parameters, followed in ascending order by spraying with super amino bacter at 1.5
ml/L during both seasons of study. |
