Role of Organic and Chemical Nutrients in Growth and Yield of Eggplant under protected cultivation
DOI:
https://doi.org/10.59658/jkas.v2i2.496Abstract
An experiment was conducted in plastic house units – Horticulture department – College of Agriculture – Baghdad University (Abu Ghraib) during 2011 – 2012 and 2012 – 2013 growing seasons aimed to study the effect of organic and chemical fertilizers on growth and production of eggplant(Hybrid Barcelona). Randomized complete block design (RCBD) with three replicates were used. An experiment contained 14 treatments, the treatments without fertilization (A1) and chemical fertilizer as recommended (NPK) with manure at a rate of 5 % of soil volume(A2)were considered as contral. So, the treatments Results of other treatments(12 treatments) compared with them, six treatments (level of organic fertilizer Biotron S + level of chemical fertilizer NPK) were A3 (100% +50%), A4 (100% + 0%), A5 (150% + 50%), A6 (150% + 0%), A7 (200% + 50%) and A8 (200% +0%). and six treatments like them with spray organic fertilizer Vegeamino (1 ml.L-1) were A9, A10, A11, A12, A13 and A14 sequentially.
The results of An experiment showed that reduced level of chemical fertilizer in the two treatments(A13 and A11) and chemical fertilizer as recommended (A2) gave the highest increases in percentage or concentration of N, P and K in the leaves. The treatments A13, A11, A9 and A2 gave a significant increases in most characteristics such as vegetative, flowery, yield and quality of fruits compared with most other treatments. The treatment(A13) was recorded as the best treatment among treatment combinations on number of leaves and chlorophyll content of leaves(second season). It’s distinguished with values of number of flower clusters(trusses) per plant, length of fruit and number of fruit that were not significant with the highest values recorded in A2 treatment in that characters. A13 treatment also gave the highest values in yield of plant with an increment of 160.8% in first season as compared with the control(A1) whereas in second season it’s gave values were close to highest values in above characters given by A2 treatment with an increment of 135.5% as compared with the control(A1).The highest significant total soluble solids for both seasons and anthocyanin content in the rind(first season)were obtained from A2 treatment whereas at second season A13 treatment gave the highest increase.
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