Abstract
PurposeThe research was performed to assess the effect of vermicompost and tuber size on the storage behavior of potato during the ambient condition.MethodsThe research was consisted of two factors, i.e., factor A: vermicompost level (Vm-4): Vm1: 0 t ha−1 (control), Vm2: 3 t ha−1, Vm3: 6 t ha−1, and Vm4: 9 t ha−1; factor B: tuber size (T-5): T1: 5–10 g, T2: 10–20 g, T3: 20–30 g, T4: 30–40 g, and T5: > 40 g. The research was conducted in a split-plot design where vermicompost levels were assigned to the main plots and tuber sizes to the subplots.ResultsVermicompost had a significant effect on most of the processing quality contributing parameters of potato. Processing quality parameters increased with increasing vermicompost level irrespective of tuber size. Among the 20 treatment combinations, vermicompost @ 9 t ha−1 with tuber size > 40 g exhibited the highest starch (23.81 mg g−1 FW), antioxidant (478.84 Trolox µMol 100 g−1 FW), polyphenol (96.133 GA mg 100 g−1 FW), and the lowest reducing sugar (0.1020 mg g−1 FW). In respect of ambient storage condition, starch decreased with increasing storage time; reducing sugar gradually increased with increasing storage time up to 40 days after storage (DAS) and after that slightly decreased and finally, potato became non-suitable for both table and processing purpose; antioxidant and polyphenol slightly increased up to 20 DAS and after that gradually decreased with increasing storage time.ConclusionsPotato growers may use vermicompost for increasing and improving processing quality of potato.
Highlights
Potato (Solanum tuberosum L.) belonging to the Solanaceae family is cultivated in almost 150 countries and is the world’s single most vital tuberous vegetable with an important part in the worldwide food network and food security (Singh 2010)
The highest starch content was obtained by T5 (21.427 mg g−1 FW, 18.671 mg g−1 FW, 16.212 mg g−1 FW, and 12.270 mg g−1 FW) and minimum was obtained by T1 (19.408 mg g−1 FW, 16.916 mg g−1 FW, and 14.457 mg g−1 FW, 10.350 mg g−1 FW), at 0, 20, 40, and 60 days after storage (DAS), respectively (Table 2)
Among different interaction of vermicompost levels and tuber sizes, significant dissimilarity was shown on starch content at different storage time
Summary
Potato (Solanum tuberosum L.) belonging to the Solanaceae family is cultivated in almost 150 countries and is the world’s single most vital tuberous vegetable with an important part in the worldwide food network and food security (Singh 2010). It is the world’s fourth largest harvested crop following maize, wheat, and rice. The entire global potato production was estimated at 388,190,674 ton in 2017 (FAOSTAT 2017) It is the most highly cultivated tuber crop in the world with more than half of entire global The total production and consumption of potato are increasing day by day because of a substitute food crop and a nutrient-rich crop as an alternative of rice and wheat (BBS 2015)
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