EFFECT OF SOME CHEMICAL COMPOUNDS ON SOME CHARACTERISTICS OF SHOOT AND FRUIT OF PEACH (Prunus persica L.) CV. EARLY CORONET

Sarfaraz F A Al- Bamarny

doi:10.33899/magrj.2010.33935

Abstract

This study was carried out during 2008 growing season on peach trees (Prunus persica L.) cv. Early Coronet selected from orchard in Seiujh - Duhok city - Kurdistan Region, Iraq, to investigate the effect of [Naphthalene acetic acid [NAA, Riedel-de Haen (0 and 5 mg.l-1); KNO3 (Merck) (0, 0.1 and 0.2 %), and Fe (NaFeEDDHA) Technical Sodium Ferric ethylenediamine di-o-hydroxyphenyle acetate (0, 30 and 60 mg.l-1] on growth and fruit characteristics. One month after fruit set, trees were sprayed at two date (24/April/2008 and 25/May/2008) with NAA, KNO3 and Fe. Raising the levels of NAA to 5 mg.l-1, KNO3 to 0.2 % and Fe to 60 mg.l-1 led to a significant increase in the value of shoot dry weight, total chlorophyll, fruit number, fruit length, fruit diameter, total carotene as compared with untreated trees. The interaction between Foliar spray of 5 mg.l-1 NAA 0.2% KNO3 60 mg.l-1 Fe were the best treatment which gave the highest means of shoot dry weight, total chlorophyll, fruit number, fruit length, fruit diameter and total carotene.

Highlights

The peach Prunus persica is known as a species of prunus that bear an edible juicy fruit
ElSheikh et al, (2007) Sprayed "Florida Prince and Desert Red" peach trees once, twice and thrice a year with combinations of chelate at the rate of Fe, Zn and Mn or combinations of Zn, Mn, Fe sulphate, The results indicated that spraying the trees twice or thrice yearly was more effective than spraying once a year or control in improving and increasing yield, fruit weight, fruit size and fruit firmness of both peach fruits
This study investigates foliar application of nutrients and the interactive effect of NAA, KNO3 and Fe on nutrient status, shoot and yield characteristics of peach

Summary

INTRODUCTION

The peach Prunus persica is known as a species of prunus that bear an edible juicy fruit. Heavy peaches crops year after year tends to decrease nutrients availability in soil due to continuous removal of nutrients from the soil, application of fertilizers to improve yield of plant is required (Westwood, 1978) Auxins such as NAA have been used since a long time to improve fruit quantity and quality in many deciduous fruit tree. ElSheikh et al, (2007) Sprayed "Florida Prince and Desert Red" peach trees once, twice and thrice a year with combinations of chelate at the rate of Fe, Zn and Mn or combinations of Zn, Mn, Fe sulphate, The results indicated that spraying the trees twice or thrice yearly was more effective than spraying once a year or control in improving and increasing yield, fruit weight, fruit size and fruit firmness of both peach fruits They improved most of fruit quality parameters. All the data were tabulated and statistically analyzed with computer using (SAS system 2002)

Available nutrient content

RESULTS

Fe Mean

Early Coronet