Gradus
Vol 4, No 2 (2017): Autumn (November)
PSEUDOMONAS SP. ÉS LAMINARIA SP. HATÁSA A KUKORICA NÖVEKEDÉSÉRE
EFFECT OF PSEUDOMONAS SP. AND LAMINARIA SP. ON THE GROWTH OF MAIZE
Abstract
A növények produktivitásának meghatározó tényezője a talajok foszfor-tartalma, melynek nagy része nem hozzáférhető a növények számára. Mobilizálásában segíthetnek a P-mobilizáló baktériumok. Kísérletünket szennyvíziszappal, szennyvíziszap- komposzttal és szerves trágyával kezelt, alacsony felvehető P- tartalommal (P-CAL 25 mg kg-1) rendelkező talajjal végeztük kukorica tesztnövénnyel. A talajt Pseudomonas sp.-vel (DSMZ 13134) inokuláltuk (1*109 CFU/kg talaj) és Laminaria barna algával kezeltük, mely elősegíti a gyökérnövekedést. A kísérlet során mértük a növénymagasságot, a szár átmérőjét, a relatív klorofill tartalmat, a gyökér és hajtás száraz tömegét és a gyökérhosszt. A Pseudomonas kedvező hatását a szennyvíziszap kezelésnél, míg a barna alga kedvező hatását a gyökérnövekedésre csak a szerves trágya kezelésnél tudtuk kimutatni. A kukorica gyökérnek teljes hossza 35%-kal nőtt barna alga kezelés hatására.
The most important factor for plant growth is the phosphorous content of the soils. But, not all the phosphorous contents are available for plants. P-mobilizing bacteria could help to plants to uptake P. Our experiment was conducted in low-P content soil (P-CAL 25 mg kg-1) with sewages sludge, sewage sludge compost and manure with maize as a test plant. The soil was inoculated with Pseudomonas sp. (DSMZ 13134) (1*10-9 CFU/kg soil) and treated with Laminaria, which has positive effect on root growth. The plant height, stem base diameter, relative chlorophyll content, dry weight of shoot and root and root length were measured. Positive effect of Pseudomonas was showed at sewage sludge treatment and Laminaria’s effect was advantageous at manure treatment. The total root length of maize was 35% longer at Laminaria treatment, respectively.
Keywords
Kulcsszavak: Barna alga, Kukorica, Növekedés, Gyökérhossz,
Keywords: Brown alga, Maize, Plant growth, Root length,
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