EFFECT OF WAVELENGTH ON QUALITY OF TOMATO FRUIT

Abstract

A field experiment was carried out in Horticulture Department farms ofAgriculture College, Baghdad University, during the spring seasons of 2011 and2012 to study the effect of wavelength which transmitted from tunnel cover onquality of tomato fruit under organic system. Split plot experiment inRandomized Complete Block Design (RCBD) with 3 replicates was adaptedunder low tunnels conditions. The means were compared according to L.S.D. testat 5% significant level. Two factors were studied, the first was fertilizer type(main plots) which contained of control T0, cow manure 20% of soil volume T2,poultry manure 10% of soil volume T3, mix of half level of previous manure T4,mineral fertilizer T1, the second factor was tunnels cover color (sub plots) whichcontained Clear C, yellow Y, red R and blue B. Results showed that TSS,Acidity, Vit C. in first season, Beta caroten increased in T2 treatment, Ytreatment increased acidity, TSS and vit. C increased R cover treatment, T2Rincreased TSS while acidity increased T1C and T4Y, T2B and T3Y increasedfruit Vit. C for two seasons, T4Y and T2Y increased beta caroten for two season,From the results can be concluded that growing tomato plants under yellowcover enhanced most characters study with cow manure under organic system.