Effect of some nutrients treatments ongrowth and yield of some broccoli cultivars

Abstract EN

This investigation was carried out at theAgricultural Experimental Station, Faculty of Agricultural, Cairo University, Giza, Egypt during the two successive winter seasons of 2014 and 2015 to study the effect ofsome fertilization treatments, cultivars and their interactions onvegetative growth characteristic, yield and quality of broccoli (Brassica oleracea L.

van.

italica)plants.

Thenutrient elements applications were as follows, potassium (K) 96 kg/fed, K2O, sulphur (S) 150 kg S/fed, zinc (Zn) 200 ppm and nitric oxide (NO) 100 ppm plus the control with three cultivars namely, 'Marathon F1', 'Heraklion F1' and 'Centauro F1'.

The experimental design was a split plot with 3 replicates, where cultivars were allocated in the main plots and the nutrient elementsin the sub - plots.

Results showed that plant vegetative growth, yield and quality of heads were greatly affected by the three cultivars andthe nutrient elements.

In this respect, Marathon F1cultivargave the highest values of vegetative growth traits expressed as plant height and number of leaves per plant, while the highest leaf area and total fresh weight of plant were recorded with 'Centauro F1' in both seasons.

As well as The highest values ofmost vegetative growth were recorded for potassium soil application.

The interaction between'Centauro F1' and potassium application showed the highest leaf area and total fresh weight, while the lowest valuesfor these triets were obtained from 'Heraklion F1' with the control.

Total main head weight / plot was increased with 'Centauro F1', while'Marathon F1' and interaction between cv.

Marathon F1 and sulfur gave the highesttotal weight of a secondary head / plot and total head yield / plot and Fedden.

The interaction between cultivars and nutrients treatment gave considerable effect on head weight in both seasons, therefore the highest head weight was achieved by 'Centauro F1' and potassium in both seasons.On the other hand,the highest values of head diameter and head height wereobtained by 'Centauro F1' with sulfur in both season