Greenhouse Evaluation of Pinewood Biochar Effects on Nutrient Status and Physiological Performance in Muscadine Grape (Vitis rotundifolia L.)

Muscadine grape is a perennial crop that highly responsive to local environmental factors and viticulture practices. Biochar promising soil amendment used improve water nutrient retention promote plant growth. The present study aimed assess the effects of different pinewood biochar rates on status vegetative parameters muscadine cv. Alachua grown nutrient-poor sandy soil, Ultisols (97.2% sand, 2.4% silt, 0.4% clay), mixed with five (0%, 5%, 10%, 15%, 20%) based weight. Variations in moisture, temperature, leaf greenness value [soil analysis development (SPAD) reading], net photosynthesis rate, root shoot dry weights were measured. In addition, root, determined. results indicated higher rate could significantly ( P < 0.05) moisture. can also decrease although there no significant differences among treatments. Regarding status, increased content phosphorus (P), potassium (K), magnesium (Mg), calcium (Ca), as well organic matter cation exchange capacity. Higher contents lead Mg both aboveground belowground tissues decreased nitrogen (N), iron (Fe), copper (Cu) part. There observed SPAD values, photosynthesis, or shoot. This demonstrates addition may enhance uptake; however, it showed physiological performance plants.