|
The effect of potassium and zinc spraying time on grain yield, morphophysiological characteristics and the amount of elements in corn leaf under deficit irrigation conditions
|
Morteza Kuchak Dezfuli   , Alireza Shokuhfar * , Shahram Lack , Mojtaba Alavifazel , Mani Mojaddam |
|
|
|
Abstract: (2305 Views) |
| In order to determine the appropriate time of potassium and zinc spraying on yield and morphological characteristics of corn under low irrigation conditions, this research was carried out in summer of 2015 and 2016 in split split plots in a randomized complete blocks design and three replications in Ahvaz. The main factor included irrigation cut in three stages (12 leaf stage, emergence stage of thistle and control) and a sub plots including potassium spraying (8 leaf, 8+12 leaf and control) and sub-sub factor including zinc spraying (8 leaf, 8+12 leaf and control). The results showed the interaction of low irrigation tension, potassium foliar application and zinc were significant on the traits of grain yield, number of leaves, ear length, ear diameter, leaf nitrogen, leaf phosphorus, leaf potassium, and leaf zinc. The highest amounts of grain yield (1073.8 gram per meter square), number of leaves per plant (14.96), ear length (26.6 cm) ,ear diameter (6.8 cm) and leaf nitrogen (4.3 percent) was obtained in complete irrigation with potassium and zinc spraying in two steps of 8 and 12 leaf stage. Improving all qualifications measured by two stages of potassium and zinc spraying under deficit irrigation conditions, could greatly compensate the damage caused by tension and increase the grain yield. |
|
| Keywords: Optimal irrigation, Tassal emergence, Grain yield and Ear length. |
|
|
Full-Text [PDF 1183 kb]
(2007 Downloads)
|
Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2020/01/2 | Accepted: 2020/01/2 | Published: 2020/01/2
|
|
|
|
|
|
|
| Add your comments about this article |
|
|
|
