Response of pop corn (Zea mays L. everta) varieties to varying fertility levels

Abstract

A field experiment was conducted during rainy season of 2016 at Instructional Farm, Rajasthan
College of Agriculture, Udaipur to ascertain suitable pop corn variety and its fertility level. Treatment
consisted four pop corn varieties viz., V L Amber pop corn, BPCH-6, V L pop corn-1 and Jawahar
pop corn-11 and four fertility levels viz., 90 + 30, 110 + 40, 130 + 50 and 150 + 60 kg N + P2O5 ha–1. Soil
of the experimental site was having medium in N, P and K status. The results indicated that highest
values of growth, yield attributing parameters, nutrient uptake, grain (17.97 q ha–1), stover yield
(24.47 q ha–1), net returns (` 157495 ha–1 and B:C ratio 5.97) were obtained with variety BPCH-6.
Application of 130 + 50 kg N + P2O5 ha–1 improved growth, yield components consequently grain
yield (17.76 q ha–1), stover yield (27.44 q ha–1) over rest of the fertility levels and proved economically
beneficial with net returns (` 155058 ha–1) and B:C ratio of (5.85). At harvest experimental soil with
BPCH-6 pop corn had significantly lower N and P status, however K status of soil did not vary
significantly. Application of 150 + 60 kg N + P2O5 ha–1 resulted in significantly higher N and P
content in soil. K status did not differ with varying fertility levels.