Plant rotation, or in a small greenhouse, soil rotation
Ancient farmers learned from experience that growing the same crop year after year on the same piece of land resulted in low yields, and that they could dramatically increase productivity on the land by cultivating a sequence of crops over several seasons. They came to understand how crop rotations, combined with such practices as cover crops and green manures, enhanced soil organic matter, fertility, and tillage.
In your greenhouse, you may face limited space and plants that prefer a great deal of light while other plants prefer more shaded environments. The principles associate with crop rotation may be difficult to achieve with your limited space. But, there are other alternatives. Consider soil rotation. A few five gallon pails of last years soils, replaced by compost and new soils achieves the same end. Spread the soil from the greenhouse on your raised rows and till it in.
Ancient farmers learned from experience that growing the same crop year after year on the same piece of land resulted in low yields, and that they could dramatically increase productivity on the land by cultivating a sequence of crops over several seasons. They came to understand how crop rotations, combined with such practices as cover crops and green manures, enhanced soil organic matter, fertility, and tillage.
In your greenhouse, you may face limited space and plants that prefer a great deal of light while other plants prefer more shaded environments. The principles associate with crop rotation may be difficult to achieve with your limited space. But, there are other alternatives. Consider soil rotation. A few five gallon pails of last years soils, replaced by compost and new soils achieves the same end. Spread the soil from the greenhouse on your raised rows and till it in.