Nutrient film technique

Figure 17.7 Tubers from cv Norland plants grown in nutrient film technique (NFT) for 105 days at NASA s Kennedy Space Center, FL, USA (source Wheeler et al., 1990). Nutrient solution was pumped continuously to the back end of the trays and flowed to a drain at the front for return to the reservoir. NFT proved more successful for producing good tuber yields and allowed easy harvesting.

NFT nutrient film technique NRDGA National Retail Dry Goods Association... 

This term embraces broadcasting, spreading/spray-ing, or dusting, as weD as more specific placement methods including injection into the soil and the drifling of seed and fertilizer combined. It may be broadened to cover nutrient film techniques and the addition of fertilizers to irrigation water (fertigation). 

Nutrient Film Technique (NFT). This closed system continually pumps nutrient solutions into a channel placed at an angle in which roots hang under plants supported from above by platforms or other equipment. No substrates are used. The solution contacting roots is delivered as a watery film to assure roots will receive sufficient oxygen. The... 

It has been known since the last century that plants will grow well in the absence of humus provided they are given light and a suitable supply of inorganic nutrients (see chapter 1) and this is now done commercially under conditions using hydroponic or thin-film techniques. Humus is therefore not essential for the growth of plants... 

A report is presented of studies undertaken by the Plastics Protection Working Group of the International Biodeterioration Research Group to evaluate the nutrient salts agar method as a technique for determining the effectiveness of fungicides in PVC films. 2 refs. 

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