Growth, yield, water use efficiency of coriander (Coriandrum sativum) affected by irrigation levels and fertigation
C B HARISHA | HONNAPP A ASANGI | RAVINDRA SINGH
Understanding the effect of irrigation and fertigation on yield is essential for planning irrigation and nutrient management strategies in water scares regions. Therefore two years field experiment (2014-15 and 2015-16) was conducted to find out the interaction effect of irrigation regimes and fertigation on growth, seed yield, quality, water and nutrient use efficiency of coriander (Coriandrum sativum Benth.). In this study four irrigation levels (0.4 ET, 0.6 ET, 0.8 ET and 1.0 ET) and three fertigation levels (F1-50% nutrients F2-75% nutrients and F3-100% nutrients) were maintained using drip irrigation.Irrigation and fertigation significantly influenced the growth and seed yield along with water and nutrient use efficiency. The study revealed that irrigation at 0.8 evapotranspiration (ET) was optimum for obtaining better crop growth and seed yield in coriander. Significantly increase the essential oil content of seeds varying from 0.19% to 0.24% in drip irrigation at 0.4 ET and 1.0 ET, respectively. But fertigation has no significant influence on essential oil content. Water use efficiency was found higher in irrigation at 0.4 ET and it is 7.98 kg/ha mm of water and lowest was 5.07 kg/ha mm of water in case of irrigation at 1.0 ET. It is also observed that increasing irrigation level tends to improve nutrient use efficiency. It is concluded that drip irrigation at 0.8 ET along with 75% recommended dose of nutrients are optimum for coriander production, which ensures higher seed yield, water use efficiency and essential oil content.
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