Title of article
The Effect of Chemical Thinning on Seasonal Changes of Mineral Nutrient Concentrations in Leaves and Fruits of ‘Soltani’ Apple Trees
Author/Authors
ZAREI ، M. - Isfahan University of Technology , ZAREI ، M. - Isfahan University of Technology , B. BANINASAB ، B. - Isfahan University of Technology , B. BANINASAB ، B. - Isfahan University of Technology , RAMIN ، A. A. - Isfahan University of Technology , RAMIN ، A. A. - Isfahan University of Technology , PIRMORADIAN ، M. - Isfahan Research Center for Agricultural Science and Natural Resources , PIRMORADIAN ، M. - Isfahan Research Center for Agricultural Science and Natural Resources
Pages
12
From page
89
To page
100
Abstract
The purpose of this study was to elucidate the effects of chemical thinning on seasonal variations of leaf and fruit mineral compositions of ‘Soltani’ apple trees. Treatments, including unthinned control, naphthalene acetic acid (NAA) at 5 and 10 mg L^-1, naphthaeneacetamide (NAD) at 25 and 50 mg L^-1, benzyladenine (BA) at 50 and 100 mg L^-1 and carbaryl at 500 and 1000 mg L^-1 were applied when fruit diameters were about 8 to10 mm. The results showed that leaf nitrogen (N), phosphorus (P) and potassium (K) concentrations decreased, whereas calcium (Ca) and magnesium (Mg) increased during the season. Fruit mineral concentration changed with the age of the fruits. All nutrients decreased with fruit maturation. Most chemical thinners affected leaf concentrations of N and K but not P, Ca and Mg. Chemical thinning increased the fruits’ P, K and Mg concentrations. It is concluded that fruit chemical thinning may affect the accumulation of some nutrients, especially P and K in apple fruits and could improve fruit quality as well.
Keywords
Apple , Chemical thinning , Mineral nutrients
Journal title
Iran Agricultural Research
Serial Year
2013
Journal title
Iran Agricultural Research
Record number
2455368
Link To Document