Potassium Applications on Rice (Oryza sativaL.) Genotypes under Saline Environme

Main Article Content

M. A. BHAGAT
A. R. MAHAR
I. RAJPAR
G. S. CHANNA
A. A. MIRBAHAR
M. A. SAAND
A. MAJID
W. B. JATOI
M. H. SIROHI

Abstract

Potassium (K) nutrition play a vital role in improving plant health by mitigating the severity of disease, drought and salinity stresses and improve yield of plants. We assessed the performance of three rice genotypes (DR-92, DR-51 and IR-6) using potassium treatments under saline environment. The experiments were laid down in completely randomized design with five potassium treatments (T=0.0, T2= 37.0, T=40.7, T= 44.4 and T= 48.1 kg ha-1) at Green house, Shah Abdul Latif University Khairpur. The recommended rates of N:P fertilizer (160:90 kg ha-1) were applied. Five seedlings of twenty-five days old were transplanted in each pot filled with ten kg of naturally occurring saline soil (EC 6.25 dS m-1). Agronomic parameters were recorded at the time of maturity. Ionic analysis i.e. the contents of K+, Na+ and K+/Na+ ratio were determined in shoot dry matter and grains. The results revealed a significant increase in vegetative and yield components of rice genotypes at higher potassium applications. Moreover, Na+ contents in grain and straw samples of rice genotypes decreased with increasing potassium applications. Overall, genotype DR-92 followed by DR-51 performed better with potassium application to mitigate salt stress.

Article Details

How to Cite
M. A. BHAGAT, A. R. MAHAR, I. RAJPAR, G. S. CHANNA, A. A. MIRBAHAR, M. A. SAAND, A. MAJID, W. B. JATOI, & M. H. SIROHI. (2020). Potassium Applications on Rice (Oryza sativaL.) Genotypes under Saline Environme. Sindh University Research Journal - SURJ (Science Series), 51(2). Retrieved from https://sujo.usindh.edu.pk/index.php/SURJ/article/view/863
Section
Articles