Investigation into the effects of K-humate-blended phosphate fertilisers on soil-available phosphorus and plant growth

The effect of organic amendments in the form of blended fertilisers, evaluating phosphorus delivery efficiency in soil has been investigated in this thesis. In addition, the new semi organic fertilisers have been examined on different plants for growth in different Victorian soils. The results obtained were variable suggesting complex interactions which are not easily resolved. The results demonstrated some beneficial effects of applying organic-inorganic P fertilizer blends and depend on soil characteristics and plant nutrients demand.