A B S T R A C TThe use of fertilize

A B S T R A C TThe use of fertilizers with beneficial microorganisms has increased in recent years. In this study, the performance was assessed of two manures enriched with Azotobacter (BioF1 and BioF2), a non-enriched organic manure (Organ), an inorganic N fertilizer applied at a rate equivalent to the organic manures (MinR1) and applied at twice the rate (MinR2), and a control treatment. A field trial and a pot experiment were carried out both consisting of a sequence of three crops per year [lettuce (Lactuca sativa)-lettuce-turnip (Brassica rapa)] grown for two years. Above ground dry matter (DM) yield and N recovery were higher in the inorganic fertilized plots in comparison to the organic manured plots. Anion exchange membranes inserted into the soil in short periods during the growing seasons revealed highersoil nitrate levels in the inorganic fertilized treatments. Organic amendments improved performance over time, proving that their fertilizing effect, though modest in the shortterm, lasts longer. The biofertilizers containing Azotobacter (BioF1, BioF2) increased the bioavailability of N over Organ, by an additional N-fixing value of 11.4 kg ha−1 estimated from the six crops of the field experiment(∼5.7 kg N per year). If compared on the basis of the same amount of N recovered, organic amendments producedan average increase of 720 kg DM ha−1 over the inorganic fertilizer (∼120 kg per crop) due to a generalmanuring effect. From the results of these experiments, no beneficial effects on crop growth could be attributedto biofertilizers other than the slight increase in N fixation.

Results (English) 1:

ABSTRACT
The use of fertilizers with beneficial microorganisms has increased in recent years. In this study, the performance was assessed of two manures enriched with Azotobacter (BioF1 and BioF2), a non-enriched organic manure (Organ), an inorganic N fertilizer applied at a rate equivalent to the organic manures (MinR1) and applied at twice. the rate (MinR2), and a control treatment. A field trial and a pot experiment were carried out both consisting of a sequence of three crops per year [lettuce (Lactuca sativa) -lettuce-turnip (Brassica rapa)] grown for two years. Above ground dry matter (DM) yield and N recovery were higher in the inorganic fertilized plots in comparison to the organic manured plots. Anion exchange membranes inserted into the soil in short periods during the growing seasons revealed highersoil nitrate levels in the inorganic fertilized treatments. Organic amendments improved performance over time, proving that their fertilizing effect, though modest in the shortterm, lasts longer. The biofertilizers containing Azotobacter (BioF1, BioF2) increased the bioavailability of N over Organ, by an additional N-fixing value of 11.4 kg ha-1 estimated from the six crops of the field experiment.
(~5.7 kg N per year). The ■ Basis Of The Used same Compared ons an If Amount Recovered Of the N, Organic Amendments Produced
An average's 720 Increase Of the DM ha's KG-1 Over The Inorganic Fertilizer (~120 Crop Per KG) Due To A General
, manuring Effect. These Experiments The Results Of the From, No Beneficial Effects ons Crop Growth Could Be Attributed
To Biofertilizers Used Other Than The Slight Increase In the N Fixation.

Results (English) 2:

A B S T R A C T
The use of fertilizers with beneficial microorganisms has increased in recent years. In this study, the performance was assessed of two manures enriched with Azotobacter (BioF1 and BioF2), a non-enriched organic manure (Organ), an inorganic N fertilizer applied at a rate equivalent to the organic manures (MinR1) and applied at twice the rate (MinR2), and a control treatment. A field trial and a pot experiment were carried out both consisting of a sequence of three crops per year [lettuce (Lactuca sativa)-lettuce-turnip (Brassica rapa)] grown for two years. Above ground dry matter (DM) yield and N recovery were higher in the inorganic fertilized plots in comparison to the organic manured plots. Anion exchange membranes inserted into the soil in short periods during the growing seasons revealed highersoil nitrate levels in the inorganic fertilized treatments. Organic amendments improved performance over time, proving that their fertilizing effect, though modest in the shortterm, lasts longer. The biofertilizers containing Azotobacter (BioF1, BioF2) increased the bioavailability of N over Organ, by an additional N-fixing value of 11.4 kg ha−1 estimated from the six crops of the field experiment
(∼5.7 kg N per year). If compared on the basis of the same amount of N recovered, organic amendments produced
an average increase of 720 kg DM ha−1 over the inorganic fertilizer (∼120 kg per crop) due to a general
manuring effect. From the results of these experiments, no beneficial effects on crop growth could be attributed
to biofertilizers other than the slight increase in N fixation.

Results (English) 3:

A，B，T，R，C，T。
In this study, the use of beneficial microbial fertilizers has increased in recent years. Through two production rich azotobcharacter, such as F1 and F24, and not rich organic production holmium organization 41 and inorganic. The equal efficiency of N fertilizer applicator applied to organic production: minr41 and applied to two rates: minr41 and control. Processing, field testing and a three-year sequel to the experiment. For example, the transfer of Lactuca sativa lettuck to IP was increased by two years. In the production of inorganic fertilizer, compared with organic fertilizer, the production of inorganic fertilizer is more abundant. In the soil with short growth period, the content of nitrogen in inorganic fertilizer is higher. Organic treatments improve time performance and provide their fertilization effect, although in the model Short, long, durable biofertilizer containing Azotobacter, F1, biof41, increasing N availability By adding 11.4.kga 1 of n fixed value, we estimate six crops from the experimental field.
For example, 5.7.kg once a year. If I compare the same basis, n recycling, organic products.
An average increase of more than 720 kg of DM ha 1 inorganic fertilizer“
The results of the experiment can be attributed to the adverse effects on crop growth
Fixed thinner than other Biofertilizers.