Release behaviour of iron and zinc in different textured soil and its distribution in rice plant (Oryza sativa L.) in North West of India

Abstract

The present study aimed to assess the relationship of soil properties with extractable zinc (Zn) and iron (Fe) in soil as well as rice plant at different incubation period. The soil and plant samples were collected from 10 districts (Yamuna Nagar, Sonipat, Jind, Panipat, Karnal, Panchkula, Kaithal, Rohtak Ambala, and Kurukshetra) of RWCS (Rice wheat cropping system) of northwest Haryana of India. The effects of soil properties especially soil texture with the micronutrient in soil and rice plant at different incubation period have not been well studied. In the lab-cum-survey study, the analysis of grain samples collected from different districts of Haryana under varied soil texture showed a positive correlation between Zn/Fe concentration in grain and mean release rate of Zn/Fe in soil (Zn – 0.80; Fe – 0.98). The highest Fe concentration in grain was found in clayey soils (59.74–60.41 mg/kg) having a maximum mean soil Fe release rate (17.98–18.03 mg/kg). Likewise, the highest Zn concentration in grain was recorded in clayey soils (29.71– 30.57 mg/kg) of Yamuna Nagar and Panchkula, which has the highest mean soil Zn release rate (1.03–1.14 mg/kg). Univariate and multivariate analysis under principal component analysis (PCA) was carried out to determine the linear relationship between soil properties and extractable soil Zn and Fe concentration as well correlogram correlation matrix using for soil properties with grain Zn and Fe concentration. Hence, the study concluded that the detection for Zn and Fe are more successful in soils with a higher proportion of clay particles than in sandy soils. Plant uptake potential is highly influenced by soil micronutrient interactions with soil properties, especially soil texture, which can be predicted by extractable soil micronutrients