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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2016.5(6): 827-836
DOI: http://dx.doi.org/10.20546/ijcmas.2016.506.091


Productivity and Nutrient Uptake of Rice Fallow Maize (Zea mays L.) as Influenced by Plant Density and Fertilizer N Under No-Till Conditions
P.Venkata Rao1*, G. Subbaiah2 and R.Veeraraghavaiah3
1RARS, Lam, Guntur-522 034, A P, India
2Agricultural College, Bapatla-522 101, Guntur, A P, India
3Dean of P.G.Studies, ANGRAU, Guntur, A P, India
*Corresponding author
Abstract:

A field experiment was conducted on clay loam soils of Agricultural College Farm, Bapatla, Guntur (A P) during rabi 2009-10 and 2010-11 to study the influence of plant density and fertilizer N on productivity and nutrient uptake of rice fallow maize   under no-till conditions. Yield attributes (cob length, number of kernels cob-1, kernel weight cob-1 and shelling percentage) were significantly higher at lower planting density but, kernel (79.3 and 81.7 q ha-1) and stover yields (101.1 and 100.4 q ha-1) were significantly higher at 100000 plants ha-1 than that recorded with 67000 plants ha-1 but was on a par with 80000 plants ha-1. Harvest index was also higher with lower planting density of 67000 plants ha-1(46.0 and 46.1%) than that recorded with higher level of planting density (100000 plants ha-1) (43.9 and 44.8%). Nutrient uptake was significantly superior with higher level of planting density. However, soil fertility status reduced with increase in planting density from 67000 to 100000 plants ha-1. Application of N significantly increased yield attributes, yields and net returns during both the years. The maximum kernel yield was recorded with application of 300 kg N ha-1 (81.3 and 85.3 q ha-1) but was statistically on par with 240 kg N ha-1 (77.5 and 79.0 q ha-1). The uptake of N, P and K by maize at harvest was significantly higher with higher plant density and higher level of N application. The available N-P-K status of the soil was higher due to the enhanced levels of nutrients to the soil. The highest net returns and benefit cost ratio (BCR) were obtained in the treatment of higher planting density (100000 plants ha-1) in combination with 300 kg N ha-1.


Keywords: Available nutrients,Grain yield,Maize,Nutrient uptake, Soil fertility status
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How to cite this article:

Venkata Rao, P., G. Subbaiah and R.Veeraraghavaiah. 2016. Productivity and Nutrient Uptake of Rice Fallow Maize (Zea mays L.) as Influenced by Plant Density and Fertilizer N Under No-Till ConditionsInt.J.Curr.Microbiol.App.Sci. 5(6): 827-836. doi: http://dx.doi.org/10.20546/ijcmas.2016.506.091