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Open research questions in Agricultural Science and Fertilization

68 unresolved questions extracted from the limitations and future-work sections of 658 Agricultural Science and Fertilization papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Opuntia ficus-indica production is critical for both human and animal consumption. The plant's production is affected by various environmental factors. There is a need to develop effective management strategies for improving tender cladode production.

    Effects of organic amendments and humic substances on tender cladode production of Opuntia ficus-indica (L.) Mill. · 2026 · DOI

  • Chronic shortages of quality fodder in Bangladesh. Limited land availability for dedicated forage production. Acidic soils constrain crop growth and productivity.

    Cultivar and planting density effects on biomass yield and forage quality of Moringa oleifera on acidic soils in subtropical Bangladesh · 2026 · DOI

  • The challenge of sustaining soil fertility while maintaining crop productivity. The need for alternative fertilization strategies that balance productivity with sustainability.

    Effects of Organomineral Fertilizer Treatments on Morphological Parameters and Leaf Macronutrient Contents of Maize Plant · 2026 · DOI

  • Future research can focus on addressing the nitrogen deficiency in the substrate. Studies can investigate the effects of different particle sizes on nutrient composition.

    Development and Statistical Evaluation of Fortified Soil Nutrient Formulation from Sugarcane Leaves Biomass for Soil Amelioration · 2026 · DOI

  • There is a need to address the nitrogen deficiency identified in the substrate. A mixed soil ameliorating protocol is necessary for robust soil quality.

    Development and Statistical Evaluation of Fortified Soil Nutrient Formulation from Sugarcane Leaves Biomass for Soil Amelioration · 2026 · DOI

  • The environmental footprint of sanitation systems, - The contribution of synthetic fertilizers to eutrophication, biodiversity loss, and greenhouse gas emissions, - The need for circular nutrient management strategies

    Application of nitrified urine fertilizer and fecal compost for growing kohlrabi in a controlled greenhouse environment · 2026 · DOI

  • Poor soil quality and soil degradation in Madagascar. Limited availability of effective and sustainable fertilizer options. Need for improved crop yields and food security.

    Assessment of cricket frass as a sustainable organic fertilizer: Effects on seedling establishment, growth and fruit yield of zucchini (Cucurbita pepo) · 2026 · DOI

  • Intensive agricultural production often relies on excessive potassium fertilization, causing soil potassium fixation and nutrient accumulation. Long-term irrational potassium input triggers soil secondary salinization, disrupts soil nutrient balance, and deteriorates soil quality. Optimized fertilization practices are needed to improve soybean production capacity and reduce environmental impacts.

    Controlled-release potassium sulfate combined with the deep banding method on soybean productivity and soil microbial characteristics · 2026 · DOI

  • There is a lack of research on the optimal dose of fertilizers for potatoes under acidic soil conditions. Prior studies have not fully addressed the effects of different fertilizer treatments on potato yield and quality.

    Optimization of potato yield and quality through nutrient management in acidic soils of Assam, India · 2026 · DOI

  • Sweet corn productivity on peat soils is often constrained by high acidity, low fertility, and limited nutrient availability. There is a need to evaluate the effects of organic-based soil amendments on sweet corn growth and yield in peat soil.

    Effect of rice husk ash and cattle manure on sweet corn in peat soil · 2026 · DOI

  • Low agronomical research on Raikia bean. Lack of proper nutrient management practices. Over-reliance on chemical phosphorus fertilisers.

    Optimisation of phosphorus dose with beneficial microorganism application for enhancing growth, yield and economic efficiency in Raikia bean (Phaseolus vulgaris L.) · 2026 · DOI

  • There is a lack of understanding of the relationships between earthworms, soil properties, and soybean performance. The impact of integrated nutrient management on earthworm ecology is not well understood.

    Earthworm community, Soil fertility and Soybean Performance under Integrated Nutrient Management in Black Clay Soils of Sagar District, Madhya Pradesh, India. · 2026 · DOI

  • There is a need to examine the long-term effects of integrated nutrient management on soil fertility. There is a need to investigate the changes in soil biological activity, carbon sequestration, and nutrient efficiency over successive seasons.

    Integrated nutrient management studies in cauliflower (Brassica oleracea L.) cv. Pusa Snowball K-1 · 2026 · DOI

  • The study identifies a research gap in the understanding of the effects of fortified farm yard manure on soil health and crop yield. The study aims to fill this gap by evaluating the effects of different doses of fortified farm yard manure on Indian mustard production.

    Fortified farm yard manure to bio-stimulate nutrient availability and production of Indian mustard · 2026 · DOI

  • Ecological vulnerabilities associated with conventional monocropping systems. Economic vulnerabilities associated with conventional monocropping systems. Limited adoption of sustainable agricultural practices in the Upper Gangetic Plains.

    Horticulture-Based Integrated Farming Enhances Productivity, Profitability, and Soil Biological Activity in Ustochrepts of the Upper Gangetic Plains, India · 2026 · DOI

  • The study identifies a gap in the development of sustainable agricultural practices in the Upper Gangetic Plains. It highlights the need for alternative farming systems that can improve productivity and profitability while enhancing soil health and biological activity.

    Horticulture-Based Integrated Farming Enhances Productivity, Profitability, and Soil Biological Activity in Ustochrepts of the Upper Gangetic Plains, India · 2026 · DOI

  • There is a need to evaluate the effects of organic amendments and humic substances on tender cladode production of Opuntia ficus-indica. The optimal combination of substrate and humic/fulvic acid treatments for improving tender cladode production is unknown.

    Effects of organic amendments and humic substances on tender cladode production of Opuntia ficus-indica (L.) Mill. · 2026 · DOI

  • Nutrient limitations, particularly low OM, N deficiency, and reduced Mn-Zn availability, necessitate improved fertilization practices and targeted soil management.

    Soil Nutrient Status and Fertility Assessment of Rice Cultivation Areas in Keşan, Türkiye · 2026 · DOI

  • The study was conducted on a specific soil type (acidic terrace soil) and may not be generalizable to other soil types. The experiment was conducted over a limited period (one year) and may not capture long-term effects.

    Cultivar and planting density effects on biomass yield and forage quality of Moringa oleifera on acidic soils in subtropical Bangladesh · 2026 · DOI

  • Further research on optimizing the nutrient quality of LOF - The application of LOF in other types of plants and farming systems

    Addition of Eco Enzyme as a Biostimulant for Liquid Organic Fertilizer for the Growth of Curly Lettuce (Lactuca sativa L.) in the Kampoeng Pintar Oase Tembok Gede Vertical Garden · 2026 · DOI

  • The lack of optimal nutrient quality in LOF - The need for alternative fertilizers that support food security

    Addition of Eco Enzyme as a Biostimulant for Liquid Organic Fertilizer for the Growth of Curly Lettuce (Lactuca sativa L.) in the Kampoeng Pintar Oase Tembok Gede Vertical Garden · 2026 · DOI

  • The need for alternative fertilization strategies that balance productivity with sustainability. The lack of research on the effects of organomineral fertilizers on maize growth and nutrient uptake.

    Effects of Organomineral Fertilizer Treatments on Morphological Parameters and Leaf Macronutrient Contents of Maize Plant · 2026 · DOI

  • The study identifies a gap in understanding the relationships between soil characteristics and hazelnut kernel quality. The study highlights the need for further research on soil-kernel interactions in different production systems.

    Correlations Between Kernel Quality and Soil Traits under Different Agricultural Practices in Hazelnut · 2026 · DOI

  • There is a lack of data on nutrient requirements and soil nutrient depletion rates of Juniperus and Picea species. Fertilization practices in Turkish forest nurseries are not optimized.

    Investigation of Feeding Activities for Juniperus and Picea Species Grown in Turkish Forest Nurseries · 2026 · DOI

  • There is a need for alternative fertilization management programs to provide plants with sufficient amounts of nutrients. The excessive use of chemical fertilizers in agricultural production has led to a decrease in yield and quality of agricultural products.

    Effects of Mycorrhiza and Animal Manure Applications on Fruit Yield and Quality in Greenhouse Cucumber Cultivation · 2026 · DOI

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68 open questions have been extracted from the limitations and future-work passages of 658 Agricultural Science and Fertilization papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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