Effect of mineral fertilizers, Nitrogen and phosphorus, and biological fertilizer, nitrobien, on growth and yield of garlic
2011
Omer, Kh.A. | Esho, K.B.
The experiment was carried out in the Vegetable Field, Horticulture Department, College of Agriculture and Forestry, Mosul University , Iraq for two autumn seasons of 2007/2008 and 2008/2009, to study the effect of levels of nitrogen and phosphorus fertilizer (0 , 0) ( 25, 50) (50, 100) and (75, 150) kg/donum with or without the biological fertilizer (Nitrobien) .The experiment involved eight treatments and the Complete Randomized Block Design (C.R.B.D) was used with three replicates The data showed that there was significant increase in the vegetative growth characteristics and for the two growing seasons as a result of fertilization with nitrogen and phosphorus and also with nitrobien , and the interaction of them The treatment showed that there was a significant increase in the characteristics of head of the garlic ( weight , diameter and height) , and in the numbers of bulbs/head The interaction between (50 , 100) levels of nitrogen and phosphorus with biological fertilizer (Nitrobien) gave the best result in both of the two seasons and also this treatment gave the best significant increase in characteristic quality of bulbs (weight , length , and diameter) and also in T.S.S and the percentage of dry matter in bulbs in both two seasons . The interaction between (50 ,100) levels of nitrogen and phosphous with Nitrobien gave the highest total yield per unit which was 12.32 and 10.20 ton/hectar in both two seasons, respectively .
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