THE EFFECT OF CONCENTRATION AND FREQUENCY OF APPLICATION OF SHALLOT EXTRACT AS A NATURAL GROWTH REGULATOR (PGR) ON THE GROWTH OF ROBUSTA COFFEE SEEDLINGS (COFFEA CANEPHORA)
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Abstract
Study This aim analyze influence concentration and frequency giving extract onion red as substance regulator grow experience to growth Robusta coffee seeds (Coffea canephora ). Observed parameters covering tall seeds , quantity leaves , long roots , and weights fresh roots . Research use design test factorial with various level concentration and frequency application . Analysis results variance (ANOVA) shows that concentration and frequency giving extract onion red give influence significant to all growth parameters seeds . Concentration certain capable increase activity physiological plant through content auxin and gibberellin experience in onion red . Frequency the right application is also proven push growth vegetative and development system rooting . Research This give recommendation use of natural ZPT based material local For increase effectiveness robusta coffee nursery in a way friendly environmental and economic .
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