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http://krishi.icar.gov.in/jspui/handle/123456789/31928
Title: | Growth and productivity of wheat (Triticum aestivum) as influenced by potassium application |
Other Titles: | Not Available |
Authors: | S. VIJAYAKUMAR, DINESH KUMAR, Y.S. SHIVAY, ANJALI ANAND, D.K. SHARMA, V.K. SHARMA AND V. GOVINDASAMY |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Indian Agricultural Research Institute |
Published/ Complete Date: | 2019-09-01 |
Project Code: | Not Available |
Keywords: | Growth parameters, Growth analysis, Potassium, Wheat, Yields |
Publisher: | Indian Society of Agronomy |
Citation: | VIJAYAKUMAR S, KUMAR D, SHIVAY Y, ANAND A, SHARMA D, SHARMA V, GOVINDASAMY V. Growth and productivity of wheat (Triticum aestivum) as influenced by potassium application. Indian Journal of Agronomy. 2019 Sep;64(3):341__347. |
Series/Report no.: | Not Available; |
Abstract/Description: | A field experiment was conducted during winter (rabi) seasons of 2015–16 and 2016–17 at New Delhi to assess the effects of rate, methods, time and sources of potassium (K) fertilization on wheat (Triticum aestivum L.) growth, growth indices, yield and returns from investment on K. Application of 60 kg K2O/ha in 2 splits, half basal and remaining half at spike initiation stage or 75% basal and remaining 25% at spike initiation stage increased the grain yield (5.5 t/ha) by 8.8% over applying entire dose as basal. The split application of recommended dose of K also increased the growth parameters (plant height, dry-matter, leaf area index) and growth indices [crop growth rate (CGR), relative growth rate (RGR), net assimilation rate (NAR)] significantly over control. All the growth parameters and growth indices were recorded the highest with 75% RDK as basal + 25% at spike initiation + 2 foliar spray of 2.5% KNO3 (68.8 kg K2O/ha), whereas control recorded the lowest. A strong positive and significant correlation was observed between dry matter production and grain yield during 90 days after sowing (DAS) (r2=0.76) and 120 DAS (r2=0.74). Similarly, positive and significant correlation was also observed between LAI and grain yield during 90 DAS (r2=0.72) and 120 DAS (r2=0.71). The highest returns from investment on K fertilizer was obtained with 2 foliar spray, whereas 150% as basal gave the lowest returns. Application of 60 kg K2O/ha in 2 splits (50:50 or 75:25 ratio) increased returns from investment on K by 4 rupees over application of entire dose as basal. Thus, for wheat application of 60 kg K2O/ha in 2 equal splits (50% as basal + 50% at spike initiation) is recommended to realize maximum benefit from K fertilization. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Indian Journal of Agronomy |
NAAS Rating: | 5.55 |
Volume No.: | 64(3) |
Page Number: | 341__347 |
Name of the Division/Regional Station: | Agronomy |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/31928 |
Appears in Collections: | CS-NRRI-Publication |
Files in This Item:
File | Description | Size | Format | |
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ISA_September.pdf | 423.14 kB | Adobe PDF | View/Open |
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