The Effect of Two Organic Fertilizers Addition on Vegetative Growth and Yield of Strawberry (Fragaria ananassa Duch) Plant Variety ( Ruby Gem).

Abstract

This study project was conducted at the unheated greenhouse of the department of horticulture and gardening landscape/College of Agriculture/ University of Tikrit during the growing season of 2016-2017, to study the effect of addition of two organic fertilizers on the vegetative growth and yield of strawberry (Fragaria ananassa Duch) plant variety (Ruby Gem). The study included addition of Humic acid at two levels; no addition H1 and 4 ml.liter-1 addition, H2. The second factor was poultry and sheep manure addition at three levels 0.00, 3, 6 tones. Donim-1 as change followed: O1 – no addition, O2 – Poultry manure 3.0 tones. Donim-1, O3 – Poultry manure 6.0 tones. Donim-1, O4 – sheep manure 3.0 tones. Donim-1, O5 – sheep manure 6.0 tones. Donim-1.The experiment was designed using Randomized complete block design (RCBD), with three replicates. Each replicate included 12 experimental units with 10 plants in each unit. Duncan multiple range test at 5% probability was applied to compared the results. The results showed that the addition of Humic acid significantly increased the number of leaves, their chlorophyll contents, average of fruit weight size, TSS percentage, and sugar percentage in the fruit juice. The addition of poultry and sheep manures showed a domination of O3 (6.0 tones. Donim-1 poultry manure) and significantly affected all the properties. The combination of Humic acid and poultry manure (6.0 tones. Donim-1) got a significant effect on all the properties of vegetative growth and yield.