International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 3
First page : (530) Last page : (539)
Article doi: http://dx.doi.org/10.18782/2320-7051.5079
Response of Okra (Abelmoschus esculentus L.) to Various Levels of Nitrogen and Potassium at Different Crop Growth Stages
B. Naveen Kumar*, G. Padmaja and P. Chandrasekhar Rao
Department of Soil Science and Agricultural Chemistry, College of Agriculture,
Professor Jayashankar Telangana State Agricultural University, Hyderabad
*Corresponding Author E-mail: naveenb.agri999@gmail.com
Received: 11.06.2017 | Revised: 19.06.2017 | Accepted: 20.06.2017
ABSTRACT
A field experiment was conducted during kharif season of 2011 on a sandy loam soil (Alfisol) at Student’s Farm, College of Agriculture, Rajendranagar, Hyderabad with a view to study the effect of levels of nitrogen (0, 60, 120 and 180 kg N ha-1) and potassium (0, 30, 60 and 90 kg K2O ha-1) on dry matter accumulation and uptake of nutrients by okra at different stages of crop growth. Randomized Block Design (RBD) with factorial concept was followed. The results of the experiment revealed that with increase in successive levels of nitrogen upto 180 kg ha-1 and potassium upto 90 kg ha-1 there was significant increase in dry matter production of okra at all the stages of crop growth viz., 30, 60 and 90 DAS. However, the dry matter production was higher with combined application of 180 kg N ha-1 along with 90 kg K2O ha-1 at 30 (1243.9 kg ha-1), 60 (2274.4 kg ha-1) and 90 DAS (3467.4 kg ha-1) than with nitrogen and potassium alone. Similar results were obtained with regard to per cent nutrient content viz., N, P and K and nutrient uptake by okra. The nutrient content and uptake of N, P and K by okra plants at all the growth stages viz., 30, 60 and 90 DAS were highest with N3K3 combination and the total (plant + pod) N and K uptake values at harvest was foundto be 83.83 and 75.19 kg ha-1, respectively and it was also observed that dry matter production and nutrient uptake increased with increase in age of the crop. From the results it was evident that higher levels of N and K had met the requirement of okra crop at different growth stages.
Key words: Nitrogen, Potassium, Dry matter, Nutrient content, Nutrient uptake, Okra.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Kumar, B.N., Padmaja, G. and Rao, P.C., Response of Okra (Abelmoschus esculentus L.) to Various Levels of Nitrogen and Potassium at Different Crop Growth Stages, Int. J. Pure App. Biosci.5(3): 530-539 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5079
