Abstract
Rice (Oryza sativa L.) is a very important food crop because the result is used as a staple food for residents in Indonesia. Higher food fulfillment leads to the increase of rice production of the Mojogedang sub-district. Paddy fields that have high soil fertility will produce good rice productivity. Rice fields in Mojogedang Sub-district are managed with organic systems and conventional systems, the management of different fields of rice field certainly affects the level of fertility in the paddy fields so it is necessary to evaluate the soil fertility index. The survey area consists of 10 points with organic and conventional management systems. The parameters taken include chemical and biological properties of soil, including; pH, redox potential, C-organic, CEC, base saturation, P available, available K, N Total, C/N ratio, and total microbial. The data obtained by performed analysis of the main component principal component analysis (PCA) using statistical applications. Then after complete the calculation of The Soil Fertility Index (SFI) at each point and management system. The results of statistical analysis obtained soil Fertility Index on organic management systems have a class of 4 or very high and in conventional management systems have a class of 3 or High. The value of the index obtained is strongly influenced by the K indicator available where the indicator has a noticeable effect on the various management systems. Increased soil fertility index due to the use of manure that can improve plant nutrients and applied for long periods.
Highlights
Rice (Oryza sativa L.) is an important food plant for most of the world's population (Fageria, 2011), especially for residents in Indonesia
In the area of Mojogedang where there is no study of the soil fertility index conducted, it is necessary to analyze the soil Fertility index on rice fields in Mojogedang for the availability and food security for the district area of Mojogedang
Entitled “Evaluation of Soil Fertility in The Succession Of Karst Rocky Desertification Using Principal Component Analysis” aimed at the method that used in calculating the soil fertility index using principal component analysis (PCA) (Pearson Component Analysis)
Summary
Rice (Oryza sativa L.) is an important food plant for most of the world's population (Fageria, 2011), especially for residents in Indonesia. The land use in the Mojogedang subdistrict is largely a rice paddy area of 2024.74 ha (Central Statistic Agency, 2018). Rice production that needs to be improved to fulfill food such as rice is increasingly high, it is necessary to take monitoring action of Soil Fertility index in Mojogedang sub-district, Karanganyar. The difference in the management system in the rice fields of the Mojogedang subdistrict makes a difference in the fertility rate of the paddy fields, so it is necessary to evaluate the soil fertility index. In the area of Mojogedang where there is no study of the soil fertility index conducted, it is necessary to analyze the soil Fertility index on rice fields in Mojogedang for the availability and food security for the district area of Mojogedang. That is why knowing the soil fertility index is important for increasing crop production and affecting agriculture in the future
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