An overwintering cover crop increases inoculum of VAM fungi in agricultural soil

Article Abstract:

A field experiment was conducted to find out the effects of a cover crop on the inoculum levels of vesicular-arbuscular mycorrhizal (VAM) fungi. A comparison of VAM fungus colonization potentials of low-input and conventional farmed soils was made, each with and without an overwintering cover crop of hairy vetch. Results indicate that an overwintering cover crop of hairy vetch increased the VAM inoculum even after just one season. This means that the proper management and sequencing of cash and cover crops enhances long-term soil fertility and sustainability.

Soil fertility, Agricultural diversification, Cover crops, Crop rotation

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Agronomic and economic performance of wheat and canola-based double-crop systems

Article Abstract:

A study was conducted to investigate the potential of canola as a substitute for wheat in a double cropping system. Results show that canola is a profitable winter crop and a good alternative to wheat. Both canola and wheat winter-crops had no adverse effect on yield of the subsequent crop. The most agronomically successful alternative double crops are buckwheat and sunflower. Sunflower and amaranth had larger net returns than soybean when planted after either wheat or canola.

Wheat, Soybean, Soybeans, Amaranthus, Sunflowers, Cropping systems, Canola, Buckwheat, Pearl millet, Amaranths, Double cropping

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Effects of intensity of agronomic practices on a soil ecosystem

Article Abstract:

Biological activity in soil affects soil tilth and structure, the cycling of nitrogen and carbon, and the synthesis of organic matter and humus. Various cropping practices influence this activity. The authors studied wheat, soybean, and corn production using varying tillage, herbicide, crop biomass removal, and fertilizer levels; and continuous grass. The latter improved soil the most; minimal tillage left the next best soil.

Environmental aspects, Soil management, Soil management (Agronomy), Tillage, Cultivation (Land)

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