Effect of cultivation practice on the heavy metal content of rice paddy field soil in Western Ghats of India

Hegade, Ranjana Ramesha; Chethanakumara, Masarooru Veerabhadrappa; Krishnamurthy, Sannanegunda Venkatarama Bhatta

doi:10.1007/s12665-023-11317-z

Cited by 3 publications

(1 citation statement)

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“…K ex is necessary for nutrient synthesis and transport in plants, helps alleviate the adverse effects of the imbalance of some plant nutrients in the soil, and is effective in regulating water absorption, coping with drought stress, nitrogen synthesis, and activating enzymes(Marschner 1995). The reasons for the increase may vary depending on regional conditions and soil management, potentially in uenced by war-related residues or rice cultivation in these lands(Hegade et al 2024). The use of Mn-containing compounds and substances that shift soil pH towards acidity are appropriate strategies to address manganese de ciency in the study areas.…”

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confidence: 99%

Assessment of Soil Fertility and Nutrient Management Strategies in Calcareous Soils of Khuzestan Province: A Case Study Using the Nutrient Index Value Method

Abdehvand,

Karimi,

Rangzan

et al. 2024

Preprint

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Soil fertility (SF) is crucial factor that directly impact the performance and quality of crop production. To investigate the SF status in agricultural lands under winter wheat in Khuzestan province, 811 samples were collected from the soil surface (0–25 cm) depth. Eleven soil properties i.e. electrical conductivity (EC), soil organic carbon (SOC), total nitrogen (TN), calcium carbonate equivalent (CCE), available phosphorus (Pav), exchangeable potassium (Kex), iron (Fe), copper (Cu), zinc (Zn), manganese (Mn), and soil pH. The Nutrient Index Value (NIV) was calculated based on wheat nutritional requirements. The results indicated that 100%, 93%, and 74% of the study areas for CCE, pH, and EC fell into the low, moderate, and moderate to high NIV classes, respectively. Also, 25% of area is classified as low fertility (NIV < 1.67), 75% falls under medium fertility (1.67 < NIV value < 2.33), and none of in high fertility (NIV value > 2.33). Assessment of the mean wheat yield (AWY) and its comparison with NIV showed that the highest yield was in the Ramhormoz region (5200 Kg. ha− 1), while the lowest yield was in the Hendijan region (3000 Kg. ha− 1) with the lowest EC rate in the study area. Elevated levels of salinity and CCE in soils had the most negative impact on irrigated WY, while Pav, TN, and Mn availability showed significant effects on crop production. Therefore, implementing SF management practices is essential for both quantitative and qualitative improvement in irrigated wheat production in Khuzestan province.

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confidence: 99%