Absolute fertility values for manure are challenging to develop without a laboratory analysis due to the many variable conditions involved. Certainly the fertilizer value of manure increases as fertilizer cost increases, but beyond that, there is an unmeasured value to the soil in better tilth and moisture holding capacities.
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Nitrate-nitrogen is the most abundant form of nitrogen in the soil and uptake is easily accomplished through water absorption. The influence of ammonium nitrogen on the soil-plant system is also beneficial.READ MORE
Silicon has not been defined as an essential substance; it may have been overlooked as essential since it is difficult to have a growing situation without silicon present in either soil or hydroponically. For the complete story click the download link below.READ MORE
Manure fertiltiy values are affected by diet and water composition and class of livestock.READ MORE