In line with our expectations, we found an increasing trend in mineral nitrogen (NO 3 − -N and NH 4 + -N), available phosphorus (AP) and available potassium (AK) under co-application of TW and chemical fertilizer against the control treatment.
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Co-Application of Milk Tea Waste and NPK Fertilizers to Improve Sandy Soil Biochemical Properties and Wheat Growth.
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The sentences
Soil pH displayed a decreasing trend with increased TW application rate, and chemical fertilizer treatment alone was slightly decreased over the control.