| Nitrogen split applications | Nutrient management | The splitting pattern approach provides a recommendation for the total N fertilizer requirement (kg/ha) and a plan for the splitting and timing of applications in accordance with crop growth stage, cropping season, variety used, and crop establishment method. | nitrogen split application in rice, leaf colour chart, N fertilizer requirement, split doses of nitrogen |
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| Nitrogen excess | Nutrient management | When plants receive too much Nitrogen (N), they become more attractive to insects and diseases. It can also cause excessive growth and reduce the strength of the stems. | nitrogen excess problem in rice, how to identify excess nitrogen, how to check nitrogen in field, how to manage nitrogen, right nitrogen application |
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| Nitrogen deficiency | Nutrient management | Nitrogen (N) deficiency is one of the most common problems in rice in Asia. It is common in all rice-growing soils where modern varieties are grown without sufficient mineral N fertilizer. | nitrogen deficiency in rice, N deficiency symptoms, N fertilizer, how to identify N deficiency |
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| Nitrogen | Nutrient management | Nitrogen (N) is an essential plant nutrient being a component of amino acids, nucleic acids, nucleotides, chlorophyll, enzymes, and hormones. | nitrogen fertilizers, essential plant nutrient, nitrogen management in rice, N deficiency symptoms, leaf colour chart, sources of N |
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| Manganese toxicity | Nutrient management | Manganese (Mn) toxicity affects the plants metabolic processes such as enzyme activities and organic compounds. This can lead to sterility in plants. | Manganese (Mn) toxicity in rice, symptoms of Mn toxicity, management options for Mn toxicity, effects of managnese toxicity |
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| Manganese deficiency | Nutrient management | Manganese (Mn) deficiency affects photosynthesis and protein synthesis. Mn-deficient plants are often deficient in Phosphorus. | manganese deficiency, Mn deficiency symptoms, Mn deficient soil, Mn deficiency management |
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| Magnesium deficiency | Nutrient management | "Magnesium (Mg) deficiency affects several enzyme activities in plants, including carbon dioxide (C02) assimilation and protein synthesis, and the cellular pH and the cation-anion balance activation. It may reduce grain quality." | magnesium (Mg) deficiency in rice, why Mg deficiency occurs in rice, symptoms of Mg deficiency, how to manage Mg deficiency |
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| Iron toxicity | Nutrient management | "Iron (Fe) toxicity occurs on a wide range of soils, but generally in lowland rice soils with permanent flooding during crop growth. It can happen throughout the growth cycle of the crop. " | iron toxicity in rice, iron toxicity symptoms, why iron toxicity occurs in rice, how to control iron toxicity, management practices for Fe toxicity |
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| Iron deficiency | Nutrient management | Iron deficiency affects photosynthesis and leads to reduced yield and dry matter production. | iron deficiency symptoms, iron efficient rice varieties, iron fertilizer, iron deficient soil, iron deficiency managment |
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| Site-specific nutrient management for rice | Nutrient management | Site-specific nutrient management is a plant-based approach which helps farmers to optimize the use of N, P and K in their rice fields. The growth and nutrient needs of each rice crop will vary not only within and between fields, but between seasons and years. | site-specific nutrient management, ssnm for rice, effective use of fertilizer, rice crop manager, rcm for nutrient management |
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