تأثير السماد العضوي و الرش بحامض الهيومك في بعض صفات التربة و حاصل البطاطا

Abstract EN

A field experiment was carried out during the autumn season of 2014/2015, in the Organic fertilizer and Mashroom Planting preparation project at Alhusainiya township/Karbala province in clay loam soil to study the effect of four levels of organic fertilizer (date palm leaves compost) which were 0 , 20 , 40 , and 60 ton h‾¹ and three centrationcon of humic acid which 0 , 1.5 , and 3 ml L‾¹ and their interaction on some soil characteristics and yield qualtity characteristics of potato plant (Solanum tuberosum L.) Alla´a alddin variety.The experiment was included 12 treatment using RCBD design with 3 replications and the treatmentts were distributed randomzy on the experimentes units , and use LSD test to compare between means under 0.05 level .

The results has summarized the study, including the following :Asignificant differences between organic fertilizer levels on the effect on some soil caharcteristics after planting , in to reducing the bulk density means and increase available nitrogen , phosphorus , and potassium in Soil .

The 60 ton h‾¹ was suporior sygnificant when gave lower mean values of bluk density reached to 1.02 mecagram m‾3 ,and increase the means of NPK when reached to 144.86 mg kg‾¹ , 38.33 mg kg‾¹ , and 170.40 mg kg‾¹ respectively , while humic acid was suporior at the level 3 ml L‾¹ when gave lower mean value of bluk density reached 1.13 mecagram m-3 ,and gave higher values for then means of NPK reached to 130.72 mg kg‾¹ , 30.53 mg kg‾¹ , and 142.20 mg kg‾¹ respectively .

The interaction between treatments showed that treatment C4H3 suporior for gaving lowest mean value of bluck density and highest mean to the soil content of NPK compare to the control treat ment.

Significant differences was found between organic fertilizer levels for the effect on yield qualtity charaeristics such as number , weight of tubers , and marketing yield quantity of tubers , the 60 ton h‾¹ gave higher mean values for the characteristics above when reached to 6.43 tuber.

plant‾¹ , 96.86 gm and 624.86 gm.

plant‾¹ respectively .In addition, level 3 ml L‾¹ of humic acid was significatly gave higher means for the the some characteristics above when reached to 6.35 tuber.

plant‾¹ , 89.75 gm , 572.45 gm.

plant‾¹ respectively, However, the interaction treatment s showed that C4H3 was superior for gaving highest means for the yeild markketing characteristics above.