Response production of 17 genotype of taro on drought and waterlogging stress

The research was done at the field of the Pondok Modern Darussalam Gontor in Jabung Village, Mlarak District, Ponorogo Regency, East Java from July 2021 to March 2022. The study used a split plot design with a cultivation system as the main factors: saturated water cultivation (SWC) and dry land cultivation (DC). The second factor as subplot was 14 genotypes of Colacasia, i.e. five dasheen type, nine eddoe types and three genotypes of Xanthosoma. SWC was manipulated by flooding of dry land for one month before planting using irrigation water until two months after planting. DC received irrigation from rainwater. SWC and DC field was separated by 3 m. Each treatment combination was repeated three times. Interaction between water stress and taro genotype had a significant effect on root, tuber, shoot and total fresh weight; root, tuber, shoot and total dry weight, also number, length and density of stomata. Interaction between water stress and taro genotype had a significant effect on root, tuber, shoot and total fresh weight, also root, tuber, shoot and total dry weight. Jepang hijau genotype with dry land cultivation produced the highest tuber fresh weight with 1,860 g, or 80.1% higher than Pratama genotype with the lowest tuber fresh (370 g). Satoimo and Bentul ungu genotypes with saturated water cultivation resulted in the heaviest tuber fresh weight (1,167.67 g and 1,240 g), or 67.7% and 93.1% more than Ozikawa and Bentul genotypes, respectively, with the lowest tuber fresh weight was 376.67 g and 280 g, respectively.