Agronomic effectiveness of nutrition in industrial seed treatment

To the soybean cultivation, it is estimated that more than 95% of the area sown in the country uses chemically treated seeds, so that 66% of this volume is currently treated in the industry. Immediately after covering the seeds, the application of sprays based on mixtures of fungicides, insecticides, inoculants and bioregulators have demonstrated satisfactory results in the quality physiological characteristics of seeds and crop yield. Similar behavior is pointed out, when polynutrient nutritional complexes, such as Pack Seed, are added to chemical treatment. In this scenario, in order to reduce the number of products applied in pre-sowing, Spraytec innovated and developed the Pack Seed, a product that combines several elements to compose a single formulation, can be applied via seeds, in the furrow and on the leaves. Pack Seed is a complex mixture of compounds of different biochemical nature and 100% biodegradable for seed treatment. It is a differentiated product, as in addition to the traditional Co and Mo, provides mineral macro and micronutrients, biostimulants, amino acids, rooting agents, organic acids and microorganisms. It is a formulation complete seed treatment, and a promising alternative in industrial seed treatment or on farm, applied alone or associated with other products.

O objective of the present work was to evaluate the performance components and the productivity of soybean crops, from industrially treated seeds with the use of the Pack Seed product, during two storage periods.

Material and methods

O work was conducted at the Experimental Farm of the State University of Maringá, in the municipality of Maringá, in Paraná. Soybean seeds were used of the cultivar NA 5909 RG, of medium vigor. The treatments consisted of combination between two storage periods (zero and 50 days), with four commercial industrial treatment packages (Bayer, Basf, FMC and Syngenta), in which the Seed Pack was added. The test was conducted adopting the experimental design in randomized blocks, with arrangement of treatments in split plots, with four replications. In the installment were combinations of industrial seed treatments and subplot were allocated storage periods. The following characteristics were evaluated: germination, initial stand, number of pods per plant, number of seeds per pods, number of lateral branches per plant, weight of a thousand seeds and productivity. The variables that characterized the income components and the productivity were subjected to analysis of variance (p < 0,05), using the Sisvar statistical analysis system. Within the same storage period, the comparison between the means was carried out subjecting them to the Scott-Knott test, at 5% probability. In comparison between storage periods, with only one degree of freedom, the F test was conclusive, at a 5% probability level.

Results

Comparing Yourself between the pairs of treatments with and without the Pack Seed (Table 1), it was noted that the addition of Pack Seed to commercial syrups provided superior results to those observed in treatments in which the product was not added. A Pack Seed formulation contains substances that can provide a phytonic effect on the physiological performance of soybean seeds. It was observed that the increase in the number of plants per linear meter, obtained after using the Pack Seed was the variable that most contributed to the increase in grain yield of culture. Conventional treatments, on average, considering both storage periods, produced 43,95 (Bayer), 50,24 (Basf), 55,50 (FMC) and 47,68 (Syngenta) sc/ha. After treatment with Pack Seed, for these same treatments, productivity was 52,95, 65,49, 76,27 and 59,55 sc/ha, respectively. Under the tested conditions, the use of Pack Seed in the treatment industrial sector enabled an increase in agronomic characteristics, regardless of storage, compared to seeds submitted only to the standard TIS and, above all, in relation to the witness. For all variables analyzed, in both storage periods, the use of the product Pack Seed ensured higher productivity results than those observed in treatments carried out without the use of the product. Thus, increments Significant increases in productivity were recorded only with the use of Pack Seed. After 50 days of storage, productivity was lower due to the seed vigor, and not to chemical treatment.

Conclusion

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In the under tested conditions, all industrial seed treatments tested were promising, compared to untreated seeds. However, high Productivities were recorded only with the addition of Pack Seed. In both storage periods, the use of the Pack Seed product ensured results of productivity higher than those observed in treatments carried out without the use of this product. Considering the two storage periods, the average of the four conventional treatments was 49,36 sc/ha, and when Pack Seed was associated with these treatments, productivity was 63,56 sc/ha, a average increase of 14,20 sc/ha or 28,7% increase.

 

Alessandro Lucca Braccini and Lucas Caiubi Pereira, University State of Maringá (UEM)

Article published in issue 251 of Cultivar Grandes Culturas.