o nama sponzori linkovi novosti forum mapa weba prijava
sve o povrcu na jednom mjestu
savjeti edukacija ponuda - potražnja adresari proizvodnja Pregled cijena
Arhiva
Nađi:
2004:
UTJECAJ SUSTAVA PROIZVODNJE I MIKORIZE NA PRINOS PORILUKA

INTENZITET PLODONOŠENJA SORATA KRASTAVACA ZA PRERADU U ZAVISNOSTI OD NAČINA UZGOJA

RESEARCH ON THE CONTROL OF MAJOR TOMATO CROP PATHOGENS AND PESTS

RESEARCH ON LOSSES OF POTATO INTENDED FOR PROCESSING DURING STORAGE

UTJECAJ RAZLIČITO PROIZVEDENIH PRESADNICA NA PRINOS BATATA [Ipomoea batatas L. (Lam.)]

ZLATNA KRUMPIROVA CISTOLIKA NEMATODA (Globodera rostochiensis Woll.) U HRVATSKOJ

POTROŠNJA VODE I MAKROELEMENATA U HIDROPONSKOM UZGOJU RAJČICE

UTJECAJ DUŠIKA I METODE GNOJIDBE NA PRINOS PAPRIKE (Capsicum annuum L. var. grossum)

RESEARCH ON SOME SEEDLING PRODUCTION PARAMETERS OF BRASSICA AND FLOWER CULTURES BRED IN FLOATING-TRAY SYSTEM

VEGETABLE SEED HYDRATION TREATMENT - POSSIBILITIES AND RISKS

DOZIRANJE VODE KORISTEĆI KOEFICIJENT NAVODNJAVANJA

ODABIR SORATA KUPUSA ZA KISELJENJE ZA ŽUPANIJSKU ROBNU MARKU "LAKTEC"

EFFECT OF ROW COVERS AND BLACK PLASTIC MULCH ON THE YIELD OF DETERMINATE TOMATOES

MASS LOSSES OF POTATO INTENDED FOR PROCESSING DUE TO PHYSIOLOGICAL PROCESSES

RESEARCH ON THE INFLUENCE OF EXPLANT TYPE AND VARIETY ON IN VITRO MULTIPLICATION IN LETTUCE

RESEARCH ON THE WATER REGIME OF TOMATOES CULTIVATED IN SOLARIUMS

UTJECAJ VOLUMENA LONČIĆA, MIKORIZE I STAROSTI PRESADNICA NA RAST I RAZVOJ PRESADNICA LUBENICA

DINAMIKA PLODONOŠENJA RAJČICE U HIDROPONSKOM UZGOJU

UTJECAJ VOLUMENA SUPSTRATA NA KOMPONENTE PRINOSA RAJČICE U HIDROPONSKOM UZGOJU

EFFECTS OF DIFFERENT NITROGEN RATES ON THE YIELD AND QUALITY OF CELERY (Apium graveolens var. L. dulce) IN TURKEY

CRVENICE ISTRE KAO SUPSTRAT ZA POVRĆARSKU PROIZVODNJU

UTJECAJ GIBERELINSKE KISELINE (GA3) NA KOMPONENTE PRINOSA ARTIČOKE

EFFECTS OF NITROGEN RATES ON THE YIELD AND QUALITY OF ENDIVE (Cichorium endivia L.) IN TURKEY

SEED BACTERIZATION IN RELATION TO THE RATES AND THE DIFFERENT METHODS OF FERTILIZER APPLICATION TO VEGETABLE SEED CROPS

FERTILIZATION OF BEAN SEED CULTURES WITH MACRO- AND MICRO- ELEMENTS APPLIED ON THE SOIL AND FOLIARLY

INFLUENCE OF WHITE FLEECE ON THE YIELD FORMATION OF EARLY POTATOES

INVESTIGATION OF THE EFFECT OF MALT AND PLANT EXTRACTS ON DIFFERENT PLANT PATHOGENS

ADAPTABILNOST NEKIH NJEMAČKIH I MAĐARSKIH SORATA KRUMPIRA NA RAZLIČITIM LOKACIJAMA U HRVATSKOJ

YELLOW STICKY TRAPS AS A TOOL FOR CONTROLING CABBAGE WHITEFLY (ALEYRODES PROLETELLA L.) ON BRUSSELS SPROUTS

PREZENTIRANI I OBJAVLJENI RADOVI iZ POVRĆARSTVA
pošalji upit
Zbornik sažetaka 39. znanstvenog skupa hrvatskih agronoma 2004. godine - OPATIJA
INFLUENCE OF NITROGEN FERTILIZATION ON THE BACTERIA AND VEGETABLE SEED SYMBIOSIS

Lucian HALMAGEAN, Monica ZDREMTAN, Liliana CANTAR, Ioan CALINOVICI
"Aurel Vlaicu" University, Arad, Faculty of Food Industry, Tourism and the Environment Protection, str. Dragoi nr. 3, 2900 Arad, Romania (contact e-mail: mzdremtan@inext.ro)

Introduction

Lately, there has been a great interest in the effect that the nitrate fertilizers have on the vegetable production and in the interaction that it has with the bacterization. This interest is national but also international. A lot of foreign research works showed the depressive or the stimulating effect of the fertilizers containing a small amount of nitrogen as compared to the reduced effect of the fertilizers containing a big amount and being bacterized. Some of the results shoe that the surplus of nitrates determines the deregulation of bacteria entrance biochemistry into the rooty system and thus the formation of a reduced number of nodosities.

Our aim was to study the efficiency of the symbiosis between the seeding garden bean and the shoot of the Rhizobium pheseole-Biotrofin depending on the nitrogen fertilization, clarifying in this way some aspects concerning the nitrogen nutrition of the seeding garden bean.

Material and methods

The experiments were made between 1996-2001, in the agro-ecological area of Arad, an area representative for the Western part of the country. We used the Valja kind we had continuously 55 plants/m2 on the field. The seeding period was 26-30 April.

The experiment with three differently graduated factors (irrigation, bacterial treatment and nitrogen fertilization) took place in lots under-divided with variants represented three time and the lot area was 15 m2.

The bacterial product used for treating the seeds was Biotrofin, a product with two live components: a nitrogen-catching bacterium, which catches its necessary nitrogen from the atmosphere, and another bacterium, Bacillus megaterum, which solubilizes the three-calcic phosphate making it accessible for the plants.

The data interpretation was made according to a variance analysis method applied for experiences made in the same area during several years.

Results and discussion

The action of the irrigation factor during the studied period has as results the crop improvement from distinct to very significant and, compared to the years average, very significant (the crop difference-0.297t/ha). The seeds bacterization previously to seeding was one of the conditions necessary for improving the crop of every year and for the whole period. The differences were very significant (2.076-2.281t/ha). The nitrogen fertilization had the best result for the dose of N30-60. For this dose the results were the best as compared to the unfertilized variant and the average variants. We retain the statistical evidence of this favorable effect obtained by using N30-60 fertilizer as compared to the witness N0 and the reduced effect we obtained when using variants with bigger doses N90-120 kg/ha. We had the same situation when we compared the poor crop of the un-irrigated field with the better one of the irrigate field where the differences are very significant.>

The effect of different nitrogen doses applied in close connection with the bacterization and in the conditions of humidity conducted into the soil, during the whole experimental cycle, contributes to the improvement of the production up to the dose of N60. The further growth of the nitrogen dose up to 90-120 kg/ha leads to a decline with relatively low differences and an obvious lack of the bacterization contribution, especially on an un-irrigated field.>

The average bacterization effect as compared to the other two factors mediated, nitrogen and irrigation, is 110%, with low variances from one year to another. The bacterization, made on the background mediated by nitrogen, leads to the highest level of production for the experimental cycle (2.438t/ha), in the conditions of irrigation.>

In the bilateral combination, nitrogen fertilization and bacterization, we get the best association for the variants N30+bacterization and N60+bacterization. The production change at the interaction of the two factors is sustained by indexes of statistical assurance. The production evolution is situated on a biological curve when the nitrogen dose is N60 and it is combined with the bacterization, growing continuously in accordance with the nitrogen dose. From the economical point of view, it is not justified to double the nitrogen dose (from 60 to 120kg/ha) and give up bacterization, because the production growth is only 4.4%.>

The number of nodosities determined, both total and active, grows during the vegetative stages, their maximum value being in the stage R4, in the beginning of the pods formation. The nodosities decrease numerically in weight. In the stage R2, the nodosities distribution is initially on the main root, and during the following stages on the secondary root formations. According to the data, the overestimated nitrogen doses, as compared to N60, prevent the symbiosis process, existing an obvious numerical decrease of the nodosities, of the weight and of the active state.>

Conclusion

The results obtained during the period studied offer us enough evidence of the usefulness of irrigation, seeds bacterization with Biotrofin (10l/ha) and proportioning the nitrogen doses on the background of these factors in order to get physical and economical productions of seeding garden bean.

References

  1. Gheorghe, F. et al, (1990). "Unele masuri pentru realizarea de productii ridicate la fasolea pentru boabe.", Cereale si plante tehnice, nr. 10, Bucuresti

  2. Herra, C. et al, (1985). "Unele aspecte privind nutritia cu azot si fosfor la fasole", Analele I.C.C.P.T. Fundulea, Vol. 2, Bucuresti

  3. Popescu, A., (1990). "Procesul de fixare biologica a azotului atmosferic si factorii care il conditioneaza". Probleme agro-fito-tehnice teoretico-aplicate, Analele I.C.C.P.T. Fundulea, Vol. 2, Bucuresti


Sva prava pridržava (c) 2003 - 2017 Zdravko Matotan & Abacus