Soil micronutrients (Zn and Fe) fractions and response of rice (Oryza Sativa) in different soil of Haryana under rice-wheat cropping system

• Published in: Journal of plant nutrition Vol. 47; no. 19; pp. 3393 - 3410
• Main Authors: Jangir, Chetan Kumar, Sangwan, Pratap Singh, Panghaal, Dheeraj, Kumar, Sandeep, Pareek, Shruti Shree
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 25.11.2024; Taylor & Francis Ltd
• Subjects: Agricultural production; Cereal crops; Clay soils; Crop production; Crop yield; Cropping systems; foliar and micronutrient fractions; Grain; Harvesting; Iron; micronutrient; Micronutrients; Oryza sativa; Planting; Rice; Sandy soils; Soil improvement; Soil properties; Soil texture; Texture recognition; Wheat; Zinc; Zinc sulfate
• ISSN: 0190-4167; 1532-4087
• DOI: 10.1080/01904167.2024.2379578

The significance of zinc and iron in crop production, particularly in rice-wheat cropping systems, has been increasingly recognized. The present study aimed to determine the effect of different soil samples collected from the rice-wheat cropping system of Haryana with different soil texture on rice grain yield and micronutrient content using a greenhouse trial with four levels of Fe (0, 25, 50 mg kg −1 as soil and 0.5% foliar spray of FeSO 4 at 45 DAS) and four levels of Zn (0, 5, 10 mg kg −1 as soil and 0.5% foliar spray of ZnSO 4 at 35 DAS). This study discovered that rice grain yield showed a positive correlation with soil Zn and Fe concentrations in soil before sowing and a negative correlation with soil Fe and Zn concentrations in soil after crop harvesting. In most of the soils studied, foliar spray alone Fe @ 0.5% foliar (45 DAS) and Zn @ 0.5% foliar (35 DAS) improved Fe and Zn concentrations in rice significantly more than soil application of 25 mg Fe kg −1 and 5 mg Zn kg −1 , respectively. The rice grain yield in clay soil was 14-42% higher than in sandy soil with different doses of Zn and Fe application. The order of preponderance of different Fe and Zn fractions were CA-Fe < OM-Fe < EX-Fe < FeMnOX-Fe < Res-Fe and Res-Zn > FeMnOX-Zn > OM-Zn > CA-Zn > Ex-Zn in the soils, respectively. Conclusively, concomitant consideration of grain yield and grain Zn and Fe concentrations of rice are the sustainable approach toward food targets achievement.