Drought tolerance and ion accumulation of rice following application of additional potassium fertilizer

Five levels of water stress cycle (control flooded, control saturated, 5, 10, and 15 days of irrigation interval) and three potassium fertilization levels [80 kg, 120 kg, and kg 160 dipotassium oxide (K2O) ha−1] were exposed to investigate the influence of potassium fertilizer for minimizing water s...

Full description

Saved in:
Bibliographic Details
Main Authors: Mohd Zain, Nurul Amalina, Ismail, Mohd Razi, Puteh, Adam, Mahmood, Maziah, Islam, Md Robiul
Format: Article
Language:English
Published: Taylor & Francis 2014
Online Access:http://psasir.upm.edu.my/id/eprint/37162/1/Drought%20tolerance%20and%20ion%20accumulation%20of%20rice%20following%20application%20of%20additional%20potassium%20fertilizer.pdf
http://psasir.upm.edu.my/id/eprint/37162/
http://www.tandfonline.com/doi/abs/10.1080/00103624.2014.932374#.VlK_F79rsZM
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Universiti Putra Malaysia
Language: English
Description
Summary:Five levels of water stress cycle (control flooded, control saturated, 5, 10, and 15 days of irrigation interval) and three potassium fertilization levels [80 kg, 120 kg, and kg 160 dipotassium oxide (K2O) ha−1] were exposed to investigate the influence of potassium fertilizer for minimizing water stress effect and maximizing productivity of rice. Different phyto-physiological parameters as well as uptake of major nutrient elements [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe)] were examined. It was observed that rice yield, harvest index, and other physiological parameters reduces with increasing duration of water stress while application of additional potassium fertilizer has progressive impact on those parameters. From our observation, 10 days of watering cycle with potassium fertilization at 120 kg K2O ha−1 produces highest grain yield and harvest index. Uptake of major nutrient elements was also enhanced by potassium fertilizer. Therefore, it can be stated that additional potassium fertilizer application could be useful to mitigate water stress effect in rice.