Influence of Nitrogen Application Rates on Yield and Yield Attributes of Long Duration Varieties of Cassava (Manihot esculenta Crantz)

Authors

  • J. Suresh Kumar Division of Crop Production-Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram, Kerala (695 017), India https://orcid.org/0000-0003-1916-2387
  • R. Riswana Division of Crop Production -Central Tuber Crops Research Institute, Kerala (695 017), India
  • A. U. Akash ICAR-Central Tuber Crops Research Institute, Kerala (695 017), India
  • S. Sunitha Division of Crop Production-Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram, Kerala (695 017), India

DOI:

https://doi.org/10.23910/1.2023.3314a

Keywords:

Cassava, carotene, chlorophyll, growth, nitrogen, plant, variety, yield

Abstract

A field experiment was carried out at ICAR- Central Tuber Crops Research Institute (CTCRI), Sreekariyam, Thiruvananthapuram, Kerala, India to investigate the effect of different nitrogen application rates on yield and yield attributes of two long-duration cassava varieties during March, 2021 to February, 2022. The experiment was set up in Factorial Randomized Block Design (FRBD) with three replications involving two factors- two cassava varieties (Sree Pavithra and Sree Reksha) and five different nitrogen application rates (0%, 25%, 50%, 100% and 125%) of recommended nitrogen dose of 100 kg ha-1. The study revealed that the application of super optimal dose of nitrogen (125%RD of nitrogen @ 125 kg ha-1) significantly increased the yield (52.61 t ha-1) and yield attributes  namely number of tubers (3.55) plant-1, average lenth of tuber (25.48 cm), average diameter of the tuber (12 cm) and average tuber yield plant-1 (4.24 kg) in cassava. Also, super optimal dose of nitrogen positively influenced SPAD 502 chlorophyll meter reading (45.13), leaf chlorophyll a content (1.52, 1.72 mg g-1), chlorophyll b (0.64, 0.72 mg g-1) content and total chlorophyll content (2.20, 2.49 mg g-1), leaf carotene content (0.42, 0.48 mg g-1) in V1 (Sree Pavithra) V2 (Sree Reksha) respectively. Super optimal level of nitrogen positively influenced nitrogen content in leaf,stem and tuber along with phosphorous and potash content in both varieties of cassava.

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Published

2023-05-18

How to Cite

1.
Kumar JS, Riswana R, Akash AU, Sunitha S. Influence of Nitrogen Application Rates on Yield and Yield Attributes of Long Duration Varieties of Cassava (Manihot esculenta Crantz). IJBSM [Internet]. 2023 May 18 [cited 2024 May 18];14(Jan, 1):068-74. Available from: https://ojs.pphouse.org/index.php/IJBSM/article/view/507

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