Evaluation of nutrient status of kale and spinach as affected by sewage sludge and mineral fertilizers
| Autor: | Ajaykumar Kadam, Sameer Farooq, Tasadoq Hussain Jaweed, Hilal Ahmad Qazi, Farooq A. Lone, Sabia Zafar |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
biology Physiology 04 agricultural and veterinary sciences biology.organism_classification 01 natural sciences Nutrient Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Brassica oleracea Spinach Agronomy and Crop Science Sludge Cumulative effect 010606 plant biology & botany |
| DOI: | 10.6084/m9.figshare.12845103 |
| Popis: | The main objective of this study is to investigate the cumulative effect of mineral fertilizers and sewage sludge on nutrient status of kale (Brassica oleracea L. cv. ���GM Dari���) and spinach (Spinacia oleracea L. cv. ���Shalimar Green���). The experiment was carried out in a completely randomized block design with nine treatments including: no fertilizer or sewage sludge as a control (T1), 25% Sewage Sludge + 0% Recommended fertilizer dose (RFD) (T2), 50% Sewage Sludge + 0% RFD (T3), 75% Sewage Sludge + 0% RFD (T4), 100% Sewage Sludge + 0% RFD (T5), 25% Sewage Sludge + 75% RFD (T6), 50% Sewage Sludge + 50% RFD (T7), 75% Sewage Sludge + 25% RFD (T8), and 0% Sewage Sludge + 100% RFD (T9). The recommended fertilizer doses are made to apply fertilizers to meet the nutrient requirements of the crop and to build up the nutrient level in the soil to a critical soil test level over a planned time frame usually recommended by agronomists. The results of the study showed that the concentration of all macro nutrients (N, P, K, Ca, and Mg), micro nutrients (Mn, Cu, Zn, and Fe) and heavy metals (Cd, Cr, Pb, and Ni) in both kale and spinach were significantly highest in the plots treated with 75% sludge + 25% NPK, whereas, the values of these elements in control treatments were recorded to be the lowest. However, the total nitrogen content in spinach and lead concentration in kale remained significantly higher under the treatment of 50% sludge + 50% NPK. The study lead to an important conclusion that the treatment of soil with 75% sewage sludge + 25% NPK can improve the nutrient accumulation in these plants thereby enhancing yield production. |
| Databáze: | OpenAIRE |
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