Abstract
A study was conducted in the Lath house of Horticulture and Landscape Department, College of Agriculture, University of Anbar, during the growing season 2013, to investigate the effect of Bat guano (P) and seaweed extract Kelpak (K) on some vegetative growth traits of Olive seedling cv. Ashrasi. A factorial experiment with three replicates was carried out in a randomized complete block design (R.C.B.D.). The two organic manures were used in three concentrations ( 0 , 1 and 2 g for 1 kg of soil) for the Bat guano and (0 , 2 and 4 g.l-1) for the seaweed extract. The above treatments repeated two times (beginning of April and June). All measurements were taken at mid October . The obtained data was statistically analyzed using Genstat software, and the means were compared according to least significant difference test with 5% level of significance. The experimental results can be summarized as follows:-
The Bat guano affected significantly as added in all of traits except dry matter in leaves and the high concentration of Bat guano (P2) achieved high values reached 7.4 cm , 7.9 branch.seedling-1 , 38.0 leaf.seedling-1 , 6.9 cm2 , 83.6% , 14.58% , 1.68% , 0.49% and 0.85% for traits (average increase of main length stem, branches number, average increase of leaves number, leaf area, chlorophyll content in leaves , carbohydrate percentage in leaves and nitrogen , phosphorus and potassium content in leaves), respectively. On the other hand the above traits achieved lowest value at the treatment (P0).
The seaweed extract affected significantly as soil application in all of traits except potassium percentage in leaves and (K2) treatment was characterized by giving the best effect for traits (average increase of main length stem , branches number, leaf area, chlorophyll content in leaves, leaves dry matter percentage, nitrogen and phosphorus content in leaves) which gave 7.5 cm, 5.9 branch. seedling-1 , 6.6 cm2 , 47.1 spad unit , 13.66% , 1.68% and 0.46% , respectively. While the leaves number and chlorophyll content in leaves increased to the highest average as it reached 31.4 leaf.seedling-1 and 80.0 spad unit where with (K1) treatment. The (K0) treatment showed lowest value at the most of traits.
The interaction between two study factors reached a significant level in all of traits, The highest effect of interactions was depended on the treatment type, whereas the lowest value of interactions between the two study factors showed by the control treatment in most of study traits.