THE EFFECT OF COMBINATION ORGANIC AND MINERAL FERTILIZERS ON GROWTH AND YIELD OF MAIZE

THE EFFECT OF COMBINATION ORGANIC AND MINERAL FERTILIZERS ON GROWTH AND YIELD OF MAIZE

Raji Ali Mousa PHD student

Erciyes University, Graduate School of Natural and Applied Science

Supervisors: Prof. Dr. Abdullah Ulas Turkey

ABSTRACT

Background : It is known that maize is one of the crops that stresses the soil and deprives it of nutrients , so every season we need chemical fertilizers and this fertilizer has harmful effects on the environment and living organisms , and the organic fertilizer alone is slow to decompose, and It contains few nutrients so the thinking turned to combining organic fertilizer with mineral fertilizer to increase soil fertility.

Practical experiments have confirmed that the combination of organic fertilizer and mineral fertilizer can affect the growth and production of maize plants and improve soil properties. The project aims to know and evaluate the effect of replacing part of the mineral fertilizers with organic fertilizers.

The effect of combination organic manure (sheep) with mineral fertilizer in percentage on the growth of maize and some soil properties .

Method of work :The experiment carried out in In the fields of the Iraqi Agricultural Research Department - Dabouni Station in (2021) with the treatment groups as follows: Group (Control, no manure, no fertilizer (T1) Sheep fertilizer, 20 tons ha−1 [SF] (T2) Mineral fertilizer ( N.P.K ) 320 kgN/ha ,100kg P2O5/ha and 120Kg K2O/ha (NPK100%) (T3) Mixture of sheep (20 tons/ha + and mineral fertilizer NPK 320 kgN/ha ,100kg P2O5/ha and 120Kg K2O/ha, 5) Sheep manure + 25%, N.P.K [SMF25%] (T4) Sheep manure+ 50%, N.P.K [SMF50%] (T5)6) Sheep manure + 75%, N.P.K [SMF75%] (T6) Sheep manure +100% N.P.K [SMF100%] (T7)

The experiment laid out in Randomized Complete Block Design (RCBD), with three replications.

The results : experiment showed that the combination of organic fertilizer and mineral fertilizer [SMF100%](T7) gave significant differences in average of plant length growth (161) cm compared to mineral fertilizer (109) cm and organic fertilizer (99) cm respectively, also (T7) gives significant differences in root length ,ear length leaf area,500 grain weight ,biological yield, Grain yield) and content of organic matter in the soil, but in the same significant of fertilization treatment [SMF75%](T6)

The treatment [Mineral F](T3) gives significant difference in the value of EC (4.2) Dsm-1 and PH (7.5) of the soil Compared to other treatments in the experiment .

Conclusions & Recommendations : We can be concluded from blending organic fertilizer with mineral fertilizer to obtain good quality, growth and high productivity of maize and soil fertility and to reduce the amount of mineral fertilizer. Then we recommend that it can be applied by farmers by using other varieties of maize and in other locations to confirm the results.

Keywords: Mineral , Fertilizers , N.P.K , Organic , Mixing , Maize , Significant