Abstrak. Erosi merupakan suatu proses baru atau terkikisnya lapisan tanah akibat adanya energi kinetik hujan yang menyebabkan terdispersinya partikel-partikel tanah. Kondisi ini mengalami erosi akan menjadi miskin kandungan unsur hara dan bahan organiknya. Peristiwa terjadi karena banyak terdapat pada atas (top soil)khususnya N, P K sebagai penyubur tanaman. Untuk mengetahui tidak yakin apa dap...

Near Infrared Reflectance Spectroscopy (NIRS), coupled with fiber optic probes, has been shown to be a quick and reliable analytical tool for quality assurance and quality control in the pharmaceutical industry, both for verifications of raw materials and quantification of the active ingredients in final products. In this paper, a typical pharmaceutical product, hydrocortisone sodium succinate,...

Near infrared reflectance spectroscopy (NIRS) was evaluated for its accuracy in analyzing the nutritive value of tropical grass hays made by Florida livestock producers. From 1982 to 1987, a unique set of producer hays was obtained representing four tropical grass species, and an unknown range of maturities, fertilization schemes, weather conditions, and hay making and storage procedures. Gener...

Sufficient nutrient application is one of the most important factors in producing quality citrus fruits. One of the main guides in planning citrus fertilizer programs is by directly monitoring the plant nutrient content. However, this requires analysis of a large number of leaf samples using expensive and time-consuming chemical techniques. Over the last 5 years, it has been demonstrated that i...

Total mixed ration (TMR) samples (n = 110) were analyzed for dry matter (DM), crude protein (CP), soluble CP, neutral detergent fiber (NDF), NDF CP, starch, ash, fat, total ethanol-soluble carbohydrate, and nonfiber carbohydrate (NFC). Rapidly and slowly degraded and undegraded in situ CP fractions and in vitro DM, organic matter, and NDF digestibility were determined on each TMR. The TMR were ...

Near infrared reflectance spectroscopy (NIRS), a non-destructive and rapid analytical method, was used to examine the possibility of replacing a method for the large-scale screening of tomato seed viability. A total of 368 tomato seed samples were used for development and validation of an NIRS calibration model. The accelerating aging method (98 ± 2% R.H., 40 ◦C) was employed for preparation of...

Ethanol-soluble carbohydrates (ESCs) of cool-season grasses include mono- and disaccharides sometimes short-chain fructans, which may exacerbate the risk pasture-associated laminitis. A calibration for prediction ESC concentrations by near-infrared reflectance spectroscopy (NIRS) was developed from 323 samples four grass species (orchardgrass, Kentucky bluegrass, tall fescue, perennial ryegrass...

Abstract This study aimed to apply the near infrared reflectance spectroscopy (NIRS) for a robust and fast detection method fraudulence in patchouli oil plant. Pure sample adulterated with ethanol were used as samples this work. Spectral data form of transmittance acquired wavenumbers range from 400 4000 cm −1 . A total 60 mixed using six difference concentration while 10 remaining pure without...

Near-infrared spectroscopy (NIRS) was implemented to monitor the moisture content of broadleaf litters. Partial least-squares regression (PLSR) models, incorporating optimal wavelength selection techniques, have been proposed to better predict the litter moisture of forest floor. Three broadleaf litters were used to sample the reflection spectra corresponding the different degrees of litter moi...