Al-Qadisiyah Journal For Agriculture Sciences

The current experiment has been conducted at a plastic house belongs to the College of Agriculture / university of Al-Qadisiya during the growing season 2012-2013 to study the effect of spraying seaweed extract at 0, 3, and 6 ml.L-1 and amino acids at 0, 400, and 800 mg. L-1 and their combination on some floral and fruits characters of two cultivars of sweet pepper Capsicum annuum L. cv. Flavio F1 and California wonder. Results show that there is a significant increase in flowers number per plant (51.14 and 33.99) and fruit set (70.99 and 60.30) for Flavio F1 and California wonder, respectively, due to the use of sea weed extract at 6 ml. L-1. Using amino acids at 800 mg. L-1 have the same effect. Also, fruit number, weight and volume, vitamin C content, total soluble solids and total sugars are significantly increased at the highest concentrations of sea weed extract (23.26, 119.70 gm, 438.94 cm3, 49.47 mg/100 ml fresh weight, 9.03% and 5.27, respectively for Flavio F1 cultivar and 16.41, 76.31 gm, 146.93 cm3, 31.03 mg/100 ml fresh weight, 5.84% and 4.50, respectively for California wonder cultivar). Same results show the highest concentration of the amino acids. As for the interactions, the combination of seaweed extract at 6 ml. L-1 and amino acids at 800 mg. L-1 give the highest values for all the parameters measured in comparison with the control treatment.

An experiment has been conducted in Altalia'a City / Babylon on Paprika Capsicum annunm, California wander cultivar , during the season 2012 under open field in loamy soil . This study includes (9) treatments which are resulted form three levels of humic acid ( 0 , 30 , 40 )g/m2 with 3 dates of added at (15 , 30, 45 days ) from transplanting and their effect on vegetative and fruit growth . The experiment adopts the Split Plot Design (SPD) within RCBD with three replicates and the means are compared to Duncan's Multiple Range Test at the probability level of 0.05.
Results show superiority of all concentrations of humic acid treatments significantly as compared with control treatment in all vegetative growth and fruiting properties and the interaction of is C×T significantly affected the above parameters to control treatment for the four pickings ( 2 , 4 , 6 , 8 ) , for recipes studied .
The treatment dates added have more than the first date on the other two date for prescription rate of plant height (cm) of the four pickings and the results are ( 115.3 , 120.4 , 130.7 , 145.4 ) cm , respectively .While the number of leaves / plant and the area cm2 / plant the second and the third date is superior on the first date , while the number of fruits / plant for the third date has significant above the picking (4, 6 , 8) and the results are ( 20.37 , 19.84 , 13.70 ), fruit / plant , respectively .
Whereas fruit weight in first and second dates are superior. Either recipe yield plant kg / plant outweigh the second date of the another dates and for the four pickings ( 2, 4, 6, 8 ) are ( 0.719 , 2.058 , 2.842 , 3.490 ) kg / plant , respectively