| Zinc deficiency | Nutrient management | "Zinc (Zn) deficiency affects several biochemical processes in the rice plant, thus severely affecting plant growth. Zinc deficiency has similar symptoms as Fe deficiency (also occurs on alkaline soils), Fe toxicity (leaf spots, appearance), grassy stunt virus, and tungro virus. " | Zinc (Zn) deficiency in rice, symptoms of zinc deficiency, zinc deficient soil types, zinc deficiency effect on plant growth, how to manage zinc deficiency |
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| Zinc | Nutrient management | Zn is an essential plant nutrient required for several biochemical processes in the rice plant, including chlorophyll production and membrane integrity. Thus, Zn deficiencies affect plant colour and turgor. Zinc is only slightly mobile in the plant and quite immobile in soil. | essential plant nutrient, zinc (Zn) in rice, zinc deficiency symptoms, Zn fertilizer, sources of Zn |
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| Using organic materials and manures | Nutrient management | Organic material and manures are those materials that come from plant or animal waste or byproducts such as cattle or poultry manure, composted rice straw or other crop residues, sewage sludge, oil cakes, green manures, and legume clippings. | organic materials and manures, green manure, soil fertility, rice plant nutrients, organic fertilizer |
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| Sulphur deficiency | Nutrient management | "Sulfur (S) deficiency affects chlorophyll production, protein synthesis, and plant function and structure. It can lead to delayed plant development and maturity. If deficiency occurs at vegetative stage, it can affect yield. " | Sulfur (S) deficiency in rice, sulfur deficiency symptoms, effects of sulfur deficiency, management practices for sulfur deficiency |
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| Sulfide toxicity | Nutrient management | Sulfide toxicity reduces nutrient uptake of plants by reducing root respiration. It has an adverse effect on metabolism, particularly when an excessive amount is taken up by the rice plant. | sulfide toxicity in rice, symptoms of sulfide toxicity, how to manage sulfide toxicity, fertilizer for sulfide toxicity |
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| Silicon deficiency | Nutrient management | "Silicon (Si) deficiency affects the development of strong leaves, stems, and roots. It also affects the formation of a thick silicated epidermal cell layer, and makes the rice plants susceptible to fungal and bacterial disease, and insect and mite pests. " | Silicon (Si) deficiency in rice, symptoms of silicon deficiency, management practices for silicon deficiency, effects of Severe silicon deficiency |
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| Potassium deficiency | Nutrient management | "Potassium (K) deficiency affects canopy photosynthesis, thus affecting crop growth. The general pattern of damage is patchy within the field, affecting single hills rather than the whole field. " | Potassium (K) deficiency in rice, management practices for potassium deficiency, potassium deficiency signs & symptoms, potassium deficient soils |
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| Potassium | Nutrient management | Potassium (K) is an essential plant nutrient that improves root growth and plant vigor, helps prevent lodging and enhances crop resistance to pests and diseases. Potassium is mobile in the plant and quite mobile in the soil. | potassium management in rice, essential plant nutrients, K deficiency symptoms, sources of K |
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| Phosphorus deficiency | Nutrient management | P deficiency affects the major functions in energy storage and transfer of plants. Specifically, it affects tillering, root development, early flowering, and ripening. | phosphorus deficiency symptoms, P deficiency in rice, P deficient soil types, how to identify P deficiency, how to manage P deficiency |
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| Phosphorus | Nutrient management | Phosphorous (P) is an essential plant nutrient important for root development, tillering, early flowering, and ripening. It is mobile within the plant, but not in the soil. | phosphorus management in rice, P deficiency symptoms, phosphorus fertilizers, sources of P |
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