Root Characters of High Oleic and Normal Groundnut Varieties as Influenced by Nutrient Management under Well Water and Water Stress Environments

Aims: To find out the influence of moisture stress and nutrient management on root parameters of high oleic and normal groundnut varieties.

Background: A field experiment was conducted at ICRISAT, Patancheru, Hyderabad, during rabi 2022-23 and 2023-24 to evaluate the performance of high oleic and normal Groundnut varieties with nutrient management practices under well watered and water stress conditions.

Methodology: During the years 2022-23 and 2023-24 an experiment was performed in a split plot design over the environments. Under well watered conditions irrigation is given at 1.0 cumulative Epan, whereas in water stress irrigation is scheduled at 0.5 cumulative Epan. Girnar 4 (ICGV 15083) and Girnar 5 (ICGV 15090) are the high oleic varieties and Kadiri Lepakshi (K1812) is the normal oleic variety, which were used in the study.

Results: The root parameters of oleic and normal groundnut varieties differed significantly between well watered and water stress conditions. The root dry weight and root volume was significantly higher in well watered condition (E I) over water stress (E II). There was no significant variation in nutrient management treatments with respect to all the root parameters studied. Among varieties V2- Girnar 5 (ICGV 15090) registered the higher values for the root parameters and those were at par with V1-Girnar 4 (ICGV 15083). Whereas, Kadiri Lepakshi variety (V3) has recorded the lower values for the root parameters studied.