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Soil nutrient and invertase-producing bacteria relation impact on Cilembu sweet potato (Ipomoea batatas L.) growth: A study based on upland and wetland cultivation in Cilembu village Sumedang district

Jurnal Kultivasi(2023)

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Abstract
Environment is one important factors that must be considered in supporting sweet potato productivity. Environmental factors can be biotic and abiotic, including the availability of nutrients and microbes in the soil. This study aimed to identify the nutrient content of the soil in paddy fields and dry fields, identify the total invertase microorganisms in paddy fields and dry fields, and identify the relationship between soil nutrients and microorganisms during the growth of Cilembu sweet potato in dry and paddy fields agroecosystems. This research was conducted on dry fields and paddy fields in Cilembu Village, Sumedang Regency. The experimental design used was a randomized block design (RBD) with six treatments and three replications: A; Rancing, paddy fields, B; Biang, paddy fields, C; Mencrang, paddy fields, D; Rancing, dry fields, E; Biang, dry fields, F; Mencrang, dry fields. The observed parameters included pH, C-organic, total-N, available-P, exchangeable-K, exchangeable-Na, exchangeable-Ca, and exchangeable-Mg, cation exchange capacity (CEC), and total invertase-producing bacteria. The results showed that in paddy fields, the pH was slightly acidic, and the nutrient content such as N, available P, exchangeable Ca, Mg, Na, CEC, and C-organic tended to be more available. Soil K and abundant invertase bacteria were more available in the dry fields. The activity of invertase bacteria had a close relationship with the K content. The information generated in this study could be used to determine an effective location to produce good quality sweet potato.
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Key words
wetland cultivation,cilembu village sumedang district,sweet potato,soil,invertase-producing
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