INFLUENCE OF NUTRIENT LEVELS AND TIME OF APPLICATION ON PLANT GROWTH, SEED YIELD AND QUALITY OF MAIZE (Zea mays L.) HYBRID HEMA (NAH-1137)
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Date
2015-07-10
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
The field and laboratory experiments were during kharif 2014-15 to study the
influence of nutrients levels and time of application on plant growth, seed yield and
quality of maize hybrid (Zea mays L.)-Hema. The study comprised of four treatments and
five replications. The results revealed that among the different nutrient levels of
applications T3: 225:112.5:60 NPK kg ha-1 ( 20 % N, 100 % P & K at sowing, 25 % N at
4th leaf stage, 30 % N at 8th leaf stage, 20 % N at tasseling stage and 5 % N at grain filling
stage) recorded highest plant height at 4 th leaf and 8 th leaf stage (24.04 and 50.32 cm),
cob length (23.46 cm), cob width (3.65 cm), seed yield per cob (123.05 g), Bulk seed
yield (26.68 q ha-1) , processed seed yield (24.38 q ha-1) and also recorded highest
quality parameters like seed germination (95.60 %), SVI-1 and SVI-II (2570 and 6284).
Accelerated ageing test was also conducted for these four treatments with a period of 0,
1, 2, 3, 4, 5, 6, days among these treatments highest field emergence (87.38 %) and
germination (90.05 %) was recorded in T3. Economics and cost benefit ratio was
calculated. The Marginal cost production and marginal return differed due to different
nutrient level treatments. Marginal cost production and marginal return was highest in T3
(Rs 69,524 and Rs 1,49,430), while lowest was observed in control T4 (Rs 59,905 and Rs
1,06,710).
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