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EFFECT OF CULTIVARS AND NITROGEN APPLICATION ON GROWTH, YIELD AND QUALITY OF WINTER BABY CORN (Zea mays L.)

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Title EFFECT OF CULTIVARS AND NITROGEN APPLICATION ON GROWTH, YIELD AND QUALITY OF WINTER BABY CORN (Zea mays L.)
 
Creator Madhav Prasad Neupane
 
Contributor Prof. S. P. Singh
 
Subject Winter baby corn, cultivars, growth, yield and quality
 
Description Ph. D.
The field experiments were carried out during two consecutive winter seasons of 2011-12 and 2012-13 at the Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. The soil of the experimental field was sandy clay loam in nature, neutral in reaction (pH 7.4) having low organic carbon (0.33%), available nitrogen (191.25 kg ha-1), potassium (181.24 kg ha-1) and zinc (0.48 ppm) and medium in available phosphorus (18.94 kg ha-1) and sulphur (17.68 kg ha-1). Factorial experiment was laid out in RCBD with combination of 2 factors i.e. three cultivars (V1: HM-4, V2: HQPM-1 and V3: Azad Uttam) and six different schedules of split nitrogen application [N1: 50% as basal + 50% at knee high stage
(KHS), N2: 50% as basal + 50% at tassel emergence (TE), N3: 50% as basal + 25% at KHS + 25% at TE, N4 : 25% as basal + 50% at KHS + 25% at TE, N5: 50% as basal + 25% at KHS + 20% at TE + 5% foliar spray after first picking (FSAFP) and N6: 25% N as basal + 50% N at KHS + 20% N at TE + 5% foliar spray after first picking (FSAFP)]. A total of 18 treatment combinations were tested in the experiment. Test cultivars include two single cross hybrids (V1 & V2) and a composite (V3). Six schedules of split nitrogen application comprised of 2 split (N1 & N2), 3 split (N3 & N4) and 4 split (N5 and N6) at critical crop growth stages. Baby corn was sown adopting the seed rate 40 kg ha-1 by opening 5 cm deep furrow at 40 × 20 cm spacing on 13th October and 11th October during winter seasons of 2011-12 and 2012-13, respectively. Crop responses to different treatments were measured in terms of quantitative and qualitative indices of baby corn growth attributes viz., plant height (cm), no. of green leaves plant-1 and dry matter accumulation plant-1 (g) were recorded at 15, 30, 45, 60 DAS and at harvest. Leaf area index (LAI) and chlorophyll content (SPAD Value) were noted at 45 and 60 DAS. Initial and final plant stand (000’ ha-1), no. of barren plants and barrenness (%) were recorded. Yield attributes viz., days taken to initiation of baby corn harvest, 50% silk emergence, period of harvest, no. of baby cobs plant-1, length and girth (cm) of baby corn, baby cob and baby corn weight cob-1 (g), baby cob: baby corn ratio, baby cob and baby corn yield (picking wise and total yield q ha-1) and fodder yield (q ha-1) were recorded during both the years of study. Nutrient content i.e. NPK and their uptake by baby corn, cob husk and green fodder were estimated. The qualitative parameters viz., protein, carbohydrate, starch and sugar content in baby corn were also worked out. Finally, the economics of different treatments were also computed. Pooled analyses of the important parameters were done to draw valid conclusions. Among cultivars tested, HM-4 proved superior to HQPM-1 & Azad Uttam regarding growth and yield attributes, yield, nutrient content and their uptake besides improving the quality parameters, gross return, net return and B: C ratio of baby corn. - Application of nitrogen 50% RDN as basal + 25% RDN at KHS + 20% RDN at TE + 5% RDN as urea foliar spray (3%) after 1st picking (N5) produced higher growth and yield attributes, yield, nutrient content and their uptake besides improving the quality parameters but observed at par with 50% N as basal + 25% N at KHS + 25% N at TE (N3). - Application of nitrogen 50% RDN as basal + 25% RDN at KHS + 20% RDN at TE + 5% RDN as urea foliar spray (3%) after 1st picking (N5) resulted in maximum gross return, net return and B: C ratio of baby corn than any other treatment of split nitrogen application.
Baby corn as a winter crop be grown with the cultivar HM-4 using recommended dose (150 kg N ha-1) along with split application of nitrogen viz., 50% RDN as basal + 25% RDN at KHS + 20% RDN at TE + 5% RDN as urea foliar spray (3%) after 1st picking for achieving higher yield and net return under eastern U.P. conditions.
 
Date 2016-09-20T21:47:06Z
2016-09-20T21:47:06Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/77837
 
Language en
 
Relation P00111;
 
Format application/pdf
 
Publisher Institute of Agricultural Sciences, Banaras Hindu University