Ecology, Environment and Conservation Paper

EFFECT OF DIFFERENT FERTIGATION LEVELS ON GROWTH ANDYIELD PARAMETERS OF ONION CROP IN RED LOAMY SOILS,ANANTAPURAMU DISTRICT

M. Baby, G. Muralee Krishna, H.V. Hema Kumar and Jaripiti Trivikrama Raju

Abstract

The effect of different fertigation levels on onion crop growth and yield parameters in red loamy soils ofAnantapuramu district were assessed in research, the variety ‘Nashik red’ was tested using randomizedblock design with five different treatments i.e., 100%, 80%, 60%, 40% RDF and Control with the four numberof replications. The growth and yield parameters namely plant height, the number of leaves per plant, drymatter content (g plant-1), neck thickness of the bulb (mm), a polar diameter of the bulb (cm), equatorialdiameter of the bulb (cm), average bulb weight (g), yield of onion bulbs (t ha-1) are measured.From theresults, observed that average of plant height (70.18 cm), number of leaves (15.20), dry matter content (27.95 g plant-1), neck thickness of bulb (19 mm), polar diameter of bulb (5.43 cm), equatorial diameter ofbulb (7.28 cm), average bulb weight (129.30 g), yield of onion bulbs (51.61 t ha-1) parameters were foundsuperior in T1. however, it was on par with control in many observations. The significantly highest yield ofonion was obtained in treatment T1(100% RDF) where 100% WSF was followed in 13 splits apportioned asper crop growth stages through the drip irrigation system.