Yield and quality in Chinese potato as influenced by reduced tillage and nano nitrogen fertilization

The field experiment to assess the influence of tillage practices and nano nitrogen on the yield and quality in Chinese potato was conducted at College of Agriculture, Vellayani, Thiruvananthapuram, Kerala Agricultural University in 2022-23. The experiment was laid out in split plot design with three replications. The main plot treatments included conventional tillage, reduced tillage (RT) with surface incorporation of green manure cowpea and RT with surface retention of green manure cowpea and the sub plot treatments, different doses of nitrogen along with foliar spray of nano urea at 0.4 percent concentration. The results revealed the significant influence of reduced tillage and nano urea individually on tuber yield while among the combinations, RT + in situ green manuring and nano urea spray + RDF was found to yield comparatively better. Nano urea application significantly improved the quality attributes, starch, vitamin C and protein contents while significant variations with tillage methods were evident in vitamin C and protein Content alone.