Effect of manure of ducks fed with banana stem (Musa sapientum L) silaged on yield and chemical composition of water spinach (Ipomoea aquatica)
One experiment was conducted with 3 treatments and 5 repetitions in a completely randomized design. The treatments including TM1: NPK fertilizers; TM2: manure of ducks fed with silaged banana stem (BM); TM3: manure fed with banana stem, molasses and wort (BM-W). The objective was to evaluate the yield of water spinach when applying duck manure fed with banana stem, molasses and wort in replacing the use of NPK fertilizers.
Results showed that:in day 28 TM1 had water spinach height of 38.0 cm, which was 34.7cm higher than that of TM2 but 42.04cm lower than TM3's, the number of leaves in TM1, TM2 and TM3 was 9.26, 8.86 and 8.98 leaves, the leaf length of TM1, TM2 and TM3 was 12.08cm, 10.06cm and 10.97cm, leaf width in TM1, TM2 and TM3 was 1.79cm; 1.15cm and 1.23cm,and the difference between TM1 and TM2 and TM3 was 0.64cm and 0.56cm, respectively. Harvested yield at day 28 after sowing, The treatment 1 (TM1) had an average yield of 702g, which was higher than that of TM2 being 570g, but lower than that of TM3 being 758g. Dry matter content of water spinach in treatment 1 was 5,88%; TM2 was 7.56% and TM3 was 7.43%. The CP TM3 content was 29.83% higher than that of TM1 27.52% and TM2 26.38%.
It can be concluded that manure of ducks fed a fermented diet of banana stem mixed with molasses and wort can be used to fertilize water spinach.
