Abstract
ABSTRACTThis study aimed at identifying the proper developmental stage for the cutting of cover crops with high nutrients content in the shoots of plants to be used as green manure on crop rotation in the no-tillage (NT) system. Crotalaria juncea, Cajanus cajan, Mucuna aterrima, and Sorghum bicolor were collected at five different vegetative stages for assessing of fresh weight yield (DWY) and dry weight yield (DWY), as well as determining the carbon (C)/nitrogen (N) ratio and the contents of nutrients in the shoots of plants. The experiment was performed on a completely randomized design, with five replicates. Except for the nutrients contents in S. bicolor, for the assessed legumes the DWY, FWY, C/N ratio, nutrient concentration and nutrient accumulation in the shoots have increased with the development of plants. Therefore, it can be inferred that grasses studied will provide greater soil cover, while the legumes will provide a greater nutrient cycling.
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