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Description
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The research aimed to investigate the effectiveness of organic and inorganic fertilizer combinations on the performance of rice. The research was designed in RBD, 3 replicates, and 14 treatments. The treatments consisted of without fertilizer, 200 kg Urea/ha + 300 kg NPK 15:15:15 (Recommended Rates of Inorganic Fertilizers/RRIF), RRIF + 500 kg organic fertilizer/ha (100%; 50%,50%; 50%,25%,25%; 33%,33%,33%), RRIF + 750 kg organic fertilizer/ha (100%; 50%,50%; 50%,25%,25%; 33%,33%,33%), and RRIF + 1,000 kg organic fertilizer/ha (100%; 50%,50%; 50%,25%,25%; 33%,33%,33%). RRIF treatment with a combination of an organic fertilizer dose of 1,000 kg/ha and organic fertilizer application times of 7 HST (50%) and 21 HST (50%) gave the best growth and yield of rice. The time of giving organic fertilizers is 7 DAP and 21 DAP each dose of 50% according to the rice growth phase because rice really needs balanced nutrition at this stage for the formation of tillers after transplanting. The more tillers that are formed, the greater the opportunity to get more yields. The parameters were analyzed using Analysis of Variance (ANOVA) and the means were determined by Duncan's Multiple Range Test (DMRT) 5%. The results showed that the application of RRIF + 1,000 kg organic fertilizer/ha (50%, 50%) obtained of grain yield of rice 7.58 ton/ha (increased of 23.25%) from the RRIF, increased the C-organic of the soil 9.79%, R/C-ratio 2.45 and B/C-ratio 1.68. Fertilizers treatment L= RRIF + 1,000 kg organic fertilizer/ha (50%, 50%) showed its effectiveness with an effectiveness of 183.14% (RAE >100%). (2024-02-06)
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Related Publication
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Cotton production in a long-term, consecutive, mono-cropping cotton field has greatly suffered from soil-borne diseases. In this study, a 4-year field experiment was conducted to investigate the effects of organic fertilizer (OF) or bio-fertilizer (BF) combined with a reduced chemical fertilizer (CF) on soil physicochemical properties, biological activities, antagonistic bacteria (Bacillus, Trichoderma and Pseudomonas) and pathogen(Fusarium and Verticillium dahliae). Soil physicochemical and biological properties were significantly affected by different fertilization scenarios. Soil bulk density (BD) decreased by 4.69% more with 60% CF + BF treatment than with 60% CF + OF treatment. Compared with CF treatment, 60% CF + BF treatment significantly increased soil chemical properties of total nitrogen (TN), available phosphorus (AP), available potassium (AK), soil organic carbon (SOC) and dissolved organic carbon (DOC). The resistant enzymatic activities of catalase (CAT), peroxidase (POD), polyphenoloxidase (PPO) and fluorescein diacetate (FDA) were improved by the bio-fertilizer addition. The abundances of Bacillus, Trichoderma and Pseudomonas followed the order of BF > OF > CF > control. The gene copy numbers of Fusarium and Verticillium dahliae were 3.18 and 2.25 cfu × 103· (g · soil)−1 with CF treatment; these decreased by 47% and 32% with 80% CF + OF treatment, respectively, and they further decreased by 86% and 46% with 80% CF + BF treatment, respectively. Together, our results demonstrated that both OF and BF significantly strengthened the enzyme activities, and the antagonistic bacterial abundance but suppressed pathogens, BF was superior to OF in regulating soil microbial abundance, particularly at a high application rate, and highlighted that SOC and AP (P < 0.05) were positively correlated with antagonistic bacteria, whereas soil BD and pH were the dominant environment factors impacting soil pathogens. Therefore, ameliorating soil TN, AP and SOC statuses using organic or bio-fertilizer combined with chemical fertilizer is a promising approach to maintaining soil microbiota balance in a continuous, mono-cropping cotton field.
doi: 10.1063
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v. 5.5 build 477-5fc0150
