International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (766) Last page : (770)
Article doi: http://dx.doi.org/10.18782/2320-7051.5512
Effect of Fertilizers, Biochar and Humic acid on Seed, Stover Yield, Harvest index and Economics of Maize (Zea mays L.) Grown on Alfisols
P. Madhavi*, V. Sailaja, T. Ram Prakash and S. A. Hussain
Department of Soil Science and Agricultural Chemistry, College of Agriculture,
Professor Jayashankar Telangana State Agricultural University, Hyderabad -500030
*Corresponding Author E-mail: honey.madhu76@gmail.com
Received: 30.07.2017 | Revised: 6.08.2017 | Accepted: 8.08.2017
ABSTRACT
A field study was carried out at college farm, College of Agriculture, Rajendranagar, Hyderabad, Andhra Pradesh during Kharif 2013 on an Alfisol to find out most efficient combination of biochar, humic acid and inorganic sources of nutrients to increase the productivity and economics of maize. Soil had a pH of 7.72, EC of 0.217 dS m-1with low organic carbon (0.49%) and available nitrogen (138.6 kg ha-1), high available phosphorus (31.28 kg ha-1) and potassium (629 kg ha-1) and sufficient available sulphur (28 ppm). The experiment was laid out in a Randomized Block Design and replicated thrice with three factors comprised of factor-I (fertilizers- 100 % RDF and 75 % RDF), Factor-II (biochar levels- 0, 5 and 7.5 t ha-1) and Factor-III (humic acid levels of 0 and 30 kg ha-1). Recommended dose of NPK along with biochar at 7.5 t ha-1and humic acid at 30 kg ha-1 was recorded significantly highest seed (60.71 q ha-1) and stover yield (91.43 q ha-1). Though in the absence of biochar, 75% NPK put forth significantly lower yield (41.22 q ha-1) than 100% NPK (52.10 q ha-1), integration with biochar at the highest level of 7.5 t ha-1 and humic acid at 30 kg ha-1, the yields from the two levels of fertilizers were at a par. Highest harvest index (0.447) was obtained in 100 percent NPK alone, was on par with treatment receiving 100 percent NPK along with biochar @ 5.0 t ha-1. Highest B: C ratio (3.84) was obtained in treatment receiving 75 percent NPK with biochar @ 7.5 t ha-1.
Key words: Maize, Biochar, Humic acid, Seed yield, Stover yield, Harvest index, Economics.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Madhavi, P., Sailaja, V., Prakash, T.R. and Hussain, S.A., Effect of Fertilizers, Biochar and Humic acid on Seed, Stover Yield, Harvest index and Economics of Maize (Zea mays L.) Grown on Alfisols, Int. J. Pure App. Biosci.5(4): 766-770 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5512
