Vol. 6, Issue 4 (2018)
Response of potato (Solanum tuberosum L.) to nitrogen levels under different cultural practices
Author(s): Roop Singh Dangi, SP Singh, Dharmendra Gaur, JP Dixit, Sanjay Sharma and Rahul Patidar
Abstract: A field experiment, entitled “Response of potato (Solanum tuberosum L.) to nitrogen levels under different cultural practices†was conducted at the Research Farm of ICAR - Central Potato Research Institute, RS, Gwalior (M.P.) during Rabi season of 2016-17 on silty clay loam soil having 0.29% organic carbon, 160.25 kg available N, 24.35 kg available P, 270.01 kg available K/ha and pH 6.3. The experiment was laid out in split plot design with 8 treatment combinations replicated three times. The treatment combination consists of 2 cultural operations and 4 nitrogen levels. Heat tolerant potato variety “Kufri Surya†was planted using seed rate of 30 q ha-1. The results revealed that application of 225 kg nitrogen ha-1 without hoeing produced higher plant height at harvest. There was no any significant effect of nitrogen levels and cultural practices on plant height. Application of 225 kg ha-1 in combination without hoeing exerted significant effect on plant height, similarly no. of stem plant-1 and no. of compound leaves plant-1 were statistically at par under different treatments except for no. of stem plant-1 (2.79) at 50 DAP which was significantly higher for hoeing treatment. Cultural operations did not show any significant effect on tuber yield however increasing nitrogen levels significantly increased tuber yield. Highest tuber yield (24.81 t ha-1) was recorded with 225 kg N ha-1 which was statistically superior over control and 75 kg N ha-1. Cultural operation significantly increased tuber N uptake (63.98 kg ha-1) over without cultural operation. Increasing levels of N application significantly reduced tuber K uptake. Non-significant effect of cultural operation was observed on harvest index. Increasing application of N significantly increased harvest index. Interaction effect of cultural operation with N rates was significant. Crop N demand reduced when cultural operation was followed. Under non- hoeing condition for getting optimum yield, there is need to enhance applied dose of N. However, application of 225 kg nitrogen ha-1 recorded significantly higher biological yield, harvest index and N uptake by crop. Whereas application of 225 kg nitrogen ha-1 without hoeing produced higher plant height at 30, 50 day after planting and at harvest. The maximum net return (Rs. 78, 419 ha-1) and benefit: cost ratio (2.03) were recorded with hoeing with 225 kg nitrogen level. Whereas, lowest net return (Rs. 37, 427 ha-1) and benefit: cost ratio (1.52) were found in without hoeing without nitrogen application, respectively.
Pages: 1589-1593 | 508 Views 65 Downloads
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How to cite this article:
Roop Singh Dangi, SP Singh, Dharmendra Gaur, JP Dixit, Sanjay Sharma, Rahul Patidar. Response of potato (Solanum tuberosum L.) to nitrogen levels under different cultural practices. Int J Chem Stud 2018;6(4):1589-1593.
