This overview covers the basic microbial ecology of recirculating hydroponic solutions. Examples from NASA and Soviet CELSS tests and the commercial hydroponic industry will be used. The sources of microorganisms in nutrient solutions include air, water, seeds, plant containers and plumbing, biological vectors, and personnel. Microbial fates include growth, death, and emigration. Important micr...

Medicinal plants are a globally important resource for the treatment of disease and improvement human health, only form healthcare used by millions people. Currently, status many medicinal species is threatened overharvesting caused increasing demand. While have been cultivated in soil, resulting material often contains lower levels compounds than that wild-harvested plants. Hydroponic cultivat...

The aim of this work was to explore the feasibility time-resolved reflectance spectroscopy (TRS) in determining ripening degree and quality orange-fleshed melons. Sixty ‘Honey Moon’ melons were measured by TRS 540-1064 nm range classified as less (LeM), medium (MeM), more (MoM) mature according increasing values μa540. MoM fruit showed yellower peel color, slightly orange pulp, higher juiciness...

since the last decades, hydroponic fodder production systems have been experienced in some parts of the world. during the germination process, the growth of embryo results in the rupture of the seed coat and emergence of a young plant which it reaches to about 20cm height in a week. apparently, the concept of putting one kilogram of seeds into a hydroponic system to obtaine several kilograms of...

This paper reports an innovative method based on electrochemistry to adjust the pH in nutrient solutions used in hydroponics. The required quantity of H or OH ions is produced insitu through electrolytic water decomposition. Because the direction and rate of electrochemical reactions can be easily manipulated by controlling the polarity and voltage applied between electrodes, the most important...

The tulip is a good example of a flower bulb crop that can be adapted to hydroponic culture. In Holland, approximately 30-35% of the cut tulip crop is forced hydroponically, and we have been evaluating this production method at Cornell over the past two seasons. While our experiences have been very positive, there are several important details to be understood and acted upon before a high quali...

This research investigates the efficacy of gaseous ozone, applied under partial vacuum in a controlled reaction chamber, for the elimination of Salmonella inoculated on melon rind. The performance of high dose, short duration treatment with gaseous ozone, in this pilot system, on the microbial and sensory quality of fresh-cut cantaloupes was also evaluated. Gaseous ozone (10,000 ppm for 30 min ...

Nisin (50 microg/ml), EDTA (0.02 M, disodium salt), sodium lactate (NaL, 2%), and potassium sorbate (KS, 0.02%) were tested individually and in various combinations as sanitizer treatments for reducing Salmonella on whole and fresh-cut cantaloupe. Whole cantaloupe and fresh-cut pieces were inoculated with a five-strain cocktail of Salmonella to give 4.76 +/- 0.23 log CFU/cm2 and 3.42 +/- 0.13 l...