Potassium Application Improves Grain Yield and Alleviates Drought Susceptibility in Diverse Maize Hybrids.

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ID: 82016
2020
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Abstract
Maize ( L.) is an important component of global food security but its production is threatened by abiotic stresses in climate change scenarios, especially drought stress. Many multinational companies have introduced maize hybrids worldwide which have variable performance under diverse environmental conditions. The maize production is likely to be affected by a future water crisis. Potassium (K) is a well-known macronutrient which improves the performance of cereals under abiotic stresses. In this field experiment, we assessed the influence of soil applied K on the productivity of diverse maize hybrids grown under well-watered and drought stress conditions. The study consisted of three K levels viz., control (no KCl), KCl at 50 kg ha, and KCI at 75 kg ha factorally combined with two irrigation levels (i.e., normal recommended irrigation, well-watered condition, and half of the recommended irrigation, drought stress condition) and eight maize hybrids. Irrigation was kept in main plots, potassium in subplot, and maize hybrids in sub-subplots. The results revealed that performance of the maize hybrids was significantly influenced by all three factors, and the interaction of irrigation with potassium and irrigation with hybrids was significant; results being non-significant for all other interactions. Potassium application improved yield traits and water productivity under both normal and water stress conditions but effect was more prominent under water stress conditions than normal conditions. Potassium application also alleviated drought susceptibility of all maize hybrids. In all cases, the performance of maize hybrids was maximum under potassium application at 75 kg ha.
Reference Key
ulallah2020potassiumplants Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ul-Allah, Sami;Ijaz, Muhammad;Nawaz, Ahmad;Sattar, Abdul;Sher, Ahmad;Naeem, Muhammad;Shahzad, Umbreen;Farooq, Umar;Nawaz, Farukh;Mahmood, Khalid;
Journal Plants (Basel, Switzerland)
Year 2020
DOI
E75
URL
Keywords
grain yield water deficit biological yield drought susceptibility index

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