K. Njira

Publications19
h-index6
Citations67
Highly Influential Citations2
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Biological nitrogen fixation in sole and doubled-up legume cropping systems on the sandy soils of Kasungu, Central Malawi
Nitrogen is the most limiting element in Malawi soils with respect to crop production. However, grain legumes that are associated with biological nitrogen fixation are commonly grown in the country.… Expand
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Global Sourcing of Low-Inorganic Arsenic Rice Grain
Arsenic in rice grain is dominated by two species: the carcinogen inorganic arsenic (the sum of arsenate and arsenite) and dimethylarsinic acid (DMA). Rice is the dominant source of inorganic arsenic… Expand
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Rice Grain Cadmium Concentrations in the Global Supply-Chain
One of cadmium’s major exposure routes to humans is through rice consumption. The concentrations of cadmium in the global polished (white), market rice supply-chain were assessed in 2270 samples,… Expand
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Soil management practices that improve soil health: Elucidating their implications on biological indicators REVIEW PAPER
1 SUMMARY The growing interest in low input agricultural practices, coupled with challenges in the agro-ecosystems, which are accelerated by population pressure, poor soil management practices and… Expand
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Pigeon Pea and Cowpea-Based Cropping Systems Improve Vesicular Arbuscular Mycorrhizal Fungal Colonisation of Subsequent Maize on the Alfisols in Central Malawi
Mycorrhizal associations contribute to the sustainability of crop production systems through their roles in nutrient cycling and other benefits in the soil-plant ecosystems. A two-year study was… Expand
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A review of effects of nutrient elements on crop quality.
The problem of low soil fertility and poor plant nutrition does not only affect crop yields but also crop quality. A review of many refereed published journal articles and books sourced from internet… Expand
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Biological nitrogen fixation by pigeon pea and cowpea in the doubled-up and other cropping systems on the Luvisols of Central Malawi
Legumes form a very important component in Malawi’s cropping systems because of their roles in food security, income generation and soil fertility improvement through biological nitrogen fixation… Expand
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An assessment for the need of soybean inoculation with Bradyrhizobium japonicum in some sites of Kasungu district, Central Malawi
Soybean (Glycine max (L.) Merill) is an annual legume that belongs to the legume family Fabaceae (Tefera, 2011). It is a crop with so many benefits including human and animal nutrition, source of… Expand
  • 7
Longitudinal analysis of a long-term conservation agriculture experiment in Malawi and lessons for future experimental design
Resilient cropping systems are required to achieve food security in the presence of climate change, and so several long-term conservation agriculture (CA) trials have been established in southern… Expand
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3-1-15 Soil microbial community structures and activities in relation to nitrogen cycling in two contrasting soils in Malawi