Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop

Nutrient management is a key component of best agronomic practices for optimal crop production. The continuous use of high yielding genotypes and exhaustive cropping systems has resulted in potassium deficiency. Furthermore, the imbalanced use of nutrients, particularly potassium (K), has resulted i...

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Main Authors: Ali Izhar, Khan Asad Ali, Munsif Fazal, He Liang, Khan Aziz, Ullah Saif, Saeed Wajid, Iqbal Anas, Adnan Muhammad, Ligeng Jiang
Format: Article
Language:English
Published: De Gruyter 2019-10-01
Series:Open Agriculture
Subjects:
Online Access:https://doi.org/10.1515/opag-2019-0049
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spelling doaj-50bb987e2e5a4f01b0dda87fd1db6abd2021-09-05T20:51:16ZengDe GruyterOpen Agriculture2391-95312019-10-014150050810.1515/opag-2019-0049opag-2019-0049Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat cropAli Izhar0Khan Asad Ali1Munsif Fazal2He Liang3Khan Aziz4Ullah Saif5Saeed Wajid6Iqbal Anas7Adnan Muhammad8Ligeng Jiang9Key Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaDepartment of Agronomy, Faculty of Crop Production Sciences, The University of Agriculture, Peshawar-PakistanKey Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaKey Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaKey Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaKey Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaKey Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaKey Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaState key laboratory of conservation and utilization of subtropical Agro-bioresources Guangxi University, Nanning530004, P.R.ChinaKey Laboratory of Crop Cultivation and Farming System, Guangxi University, Nanning530004, P.R.ChinaNutrient management is a key component of best agronomic practices for optimal crop production. The continuous use of high yielding genotypes and exhaustive cropping systems has resulted in potassium deficiency. Furthermore, the imbalanced use of nutrients, particularly potassium (K), has resulted in persistent depletion from agricultural soils. To address this issue, a field experiment was conducted to determine the influence of different potassium levels under a split application on yield and yield attributes of wheat crops. The experiment was laid out in a randomized complete block design replicated four times. Five K levels (0, 60, 80, 100 and 120 kg ha−1) and different K application timings (whole dose (Basal) at sowing, equal doses at sowing+ 30 DAS, half dose at sowing+ equal doses at 30 +60 DAS and equal doses at sowing+30+60+ 90 DAS). The findings of the study revealed that potassium levels and their application times substantially influenced yield and yield components of wheat. The application of K at 120 kg ha−1 delayed anthesis and maturity and enhanced chlorophyll content (53), tillers m−2 (293.4 m−2) and increased plant height (97.1cm). The application of K 80 kg ha−1 significantly increased grain protein, nitrogen, phosphorus and potassium content which resulted in a higher (4227 kg ha−1) grain yield. In the case of K timings application, the higher grain yield (3758 kg ha−1) was achieved when K was applied one time at sowing time. It is concluded that K at the rate of 80 kg ha−1 should be applied in full at sowing for achieving higher wheat production.https://doi.org/10.1515/opag-2019-0049potassium split applicationgrain crude proteingrain potassium contentwheat
collection DOAJ
language English
format Article
sources DOAJ
author Ali Izhar
Khan Asad Ali
Munsif Fazal
He Liang
Khan Aziz
Ullah Saif
Saeed Wajid
Iqbal Anas
Adnan Muhammad
Ligeng Jiang
spellingShingle Ali Izhar
Khan Asad Ali
Munsif Fazal
He Liang
Khan Aziz
Ullah Saif
Saeed Wajid
Iqbal Anas
Adnan Muhammad
Ligeng Jiang
Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop
Open Agriculture
potassium split application
grain crude protein
grain potassium content
wheat
author_facet Ali Izhar
Khan Asad Ali
Munsif Fazal
He Liang
Khan Aziz
Ullah Saif
Saeed Wajid
Iqbal Anas
Adnan Muhammad
Ligeng Jiang
author_sort Ali Izhar
title Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop
title_short Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop
title_full Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop
title_fullStr Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop
title_full_unstemmed Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop
title_sort optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop
publisher De Gruyter
series Open Agriculture
issn 2391-9531
publishDate 2019-10-01
description Nutrient management is a key component of best agronomic practices for optimal crop production. The continuous use of high yielding genotypes and exhaustive cropping systems has resulted in potassium deficiency. Furthermore, the imbalanced use of nutrients, particularly potassium (K), has resulted in persistent depletion from agricultural soils. To address this issue, a field experiment was conducted to determine the influence of different potassium levels under a split application on yield and yield attributes of wheat crops. The experiment was laid out in a randomized complete block design replicated four times. Five K levels (0, 60, 80, 100 and 120 kg ha−1) and different K application timings (whole dose (Basal) at sowing, equal doses at sowing+ 30 DAS, half dose at sowing+ equal doses at 30 +60 DAS and equal doses at sowing+30+60+ 90 DAS). The findings of the study revealed that potassium levels and their application times substantially influenced yield and yield components of wheat. The application of K at 120 kg ha−1 delayed anthesis and maturity and enhanced chlorophyll content (53), tillers m−2 (293.4 m−2) and increased plant height (97.1cm). The application of K 80 kg ha−1 significantly increased grain protein, nitrogen, phosphorus and potassium content which resulted in a higher (4227 kg ha−1) grain yield. In the case of K timings application, the higher grain yield (3758 kg ha−1) was achieved when K was applied one time at sowing time. It is concluded that K at the rate of 80 kg ha−1 should be applied in full at sowing for achieving higher wheat production.
topic potassium split application
grain crude protein
grain potassium content
wheat
url https://doi.org/10.1515/opag-2019-0049
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