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The objective of the study was to evaluate the effect of the bioproducts Ecomic® (Mycorrhizae), Azofert F® (Rhizobia) and QuitoMax® (chitosan) on tomato yield when applied to seeds prior to sowing. Treated seeds were sown in a traditional seedbed under a completely randomized design. Plants were planted at 0.90 m and 0.30 m apart. During the reproductive stage of the crop, the variables number of flowers and number of fruits were counted. At the third harvest, polar diameter, equatorial diameter, fruit mass and yield were evaluated. The bioproducts applied produced variations in the variables evaluated, obtaining the best results when the seeds were embedded with QuitoMax®, Azofert® and Ecomic®, with a yield of 35 t ha-¹, 30 t ha-¹, 28 t ha-¹, respectively, and 25 t ha-¹ in the control treatment. [ABSTRACT FROM AUTHOR]

The work was carried out in the municipality of Guisa, Granma province, in a traditional nursery. The sowing was carried out with tobacco seeds (Nicotiana tabacum L.) of the "Corojo 2006" variety, soaked for 8 hours in a QuitoMax® solution, in a concentration of 1 g L-1 and untreated seeds. The treatments evaluated were: 1) Treatment only to seeds, 2) Treatment to seeds and seedlings, 3) Treatment only to seedlings and 4) Control Treatment (without treating seeds or seedlings), on a randomized block design. At 10, 20 and 30 days after germination (DDG), 10 plants were taken per treatment and the variable: height of the plants was measured. At 45 days after germination, 10 plants were selected per treatment and the variables plant height, number of leaves, stem diameter, root length, fresh mass of plants. For statistical processing, a double classification analysis of variance was used, with the STATISTICA statistical package, and Tukey's multiple comparison test of the mean, for a significance level of 5%, when a difference was found between the means. The best behavior of the quality variables of the postures is obtained when applying the treatment to seeds and seedlings. [ABSTRACT FROM AUTHOR]

The work was carried out in the organic farm "Las Marianas", municipality of Jiguaní county Granma, with the objective of evaluating the agronomic answer of the cultivation of the cucumber (Cucumis sativus L.) variety INIVIT to the application of QuitoMax. The treatments applied were T1: Control Treatment, T2: 200 mg ha-1, T3: 300 mg ha-1, T4: 350 mg ha-1 and T5: 400 mg ha-1, the distance of seeding between rows was 0.9 m and the distance between plants 0.22 m. The indicators number of fruits per plant, fruit mass (g), average length of fruits (cm), average diameter of fruits (cm), yield (kg m-2), and economic valuation were measured. A randomized block design with five treatments and three replications was used. Means were assessed by analysis of variance (simple classification) and Duncan test for a 5% significance using the Estatistica package version 8. The best results in the evaluated variables were obtained with the T5 treatment: 400 mg ha-1 and from the economic point of view, it was more feasible to reach the highest agricultural yield with a value of 3.9 kg m-2 and a value of the production of 11.7 CUP m-2. [ABSTRACT FROM AUTHOR]

In evaluating the effect of the chitosan on the growth of postures of tobacco an experiment was developed in an area located in the CCSF "Luis Ramírez López", state of Granma, in the campaign 2013-2014, using the seeds of the variety Corojo 2006. The investigation was developed in stonemasons to open field, applying chitosan to a dose from 350 mg ha-1 to the 15, 20 and 25 days after the germination and a treatment control. A design was continued totally randomized with four treatments, and three repetitions by treatment, they were evaluated the variables: longitude of the leaves (cm), the width of the leaves (cm), height of the plants (cm), number of leaves (OR), the width of the shaft (cm), dry and fresh mass of the leaves and the root (g). Finally, it was carried out the economic valuation. The obtained data were evaluated through an analysis of variance of simple classification and a test of stocking comparison by Tukey. The obtained results allowed to reach the conclusion of the beneficial effect of the chitosan on the indicators of quality of the postures, benefiting the producing with 51 025.50 CUP ha-1 when the bioestimulant applies to the 25 days after germinating the seeds. [ABSTRACT FROM AUTHOR]

This research was done in net houses at Empresa de Servicios (ESUNI) del Grupo Empresarial Cuba Níquel, in Moa municipality, Holguín. The objective was to evaluate the agronomic response of tomato cultivars to the application of chitosan, as an alternative to increase yield. Five doses of chitosan (250, 275, 300, 325, 350 mg/ha and control treatment) were evaluated after transplantation. They were applied during the bloom stage in two moments, and an average of the both moments were obtained and their results were presented in tables and graphs. The main production indicators were evaluated. The two-way analysis of variance (ANOVA) and the Tukey's range test were used with p d" 0.05 and Statistica 8.0 software was used to perform the statistical analysis. According to the response of plants to the application of the polymer in the different evaluated variables of both experiments, it was confirmed that chitosan have the capacity to stimulate the processes linked to plants growth and development. The 275 mg/ha dose had the highest yield. [ABSTRACT FROM AUTHOR]

The work was developed in the parcel Ñico López. The valued cultivation was the lettuce variety Black simpson, with the objective of evaluating the goods of three (3) bioestimulantes (Biobras 16, Biobras plus and Quitosana), about the yield and quality of the crop. The biostimulants was applied, to three stonemasons (one for biostimulant) to the six days after transplant (DDT) and three parcel to the seven DDT, leaving one stonemasons that as control, for an total seven (7) treatments. The main components of yield were measured and some components of the quality of the plant were determined in the Soils Province Laboratory The data were processed by the statistical package of the Statitic version 8 on Windows. One could observe that the three biostimulants has an effect positive on the mass and quality of the studied crop. [ABSTRACT FROM AUTHOR]

This work was developed in the agricultural laboratory of the faculty of Agricultural Science of the University of Granma, between the period of the 1st of April to the 25th of May 2007. In the same, was selected one bed per treatment as an experimental unit, with a population of 207 plants, planted in double rows 30 cm apart. The variety used was SS-5. Unto this variety was applied a bio active substance developed by the Bioactive group of INCA (Quitosana), which was applied in the foliar form. It was applied in the early hours of the morning, 10 days after seed germination. Crop propagation was done by direct planting. The experiment included 4 treatments, which consisted of three doses and one control. Different reproductive parameters were evaluated in the first harvest in the cucumber crop (Cucumis sativus, L.), arriving at important conclusions about the effects of the evaluated doses on the growth and development of the crop. [ABSTRACT FROM AUTHOR]

The investigation was developed in the General CCS-F Victor Ramos Hernandez, Located in the area of the Oven, on a carbonated brown floor. The valued variety of tobacco was the Corojo 2006, with the objective of evaluating different plantation marks, for they were evaluated it four plantation distances that in turn were the valued treatments with a design of totally randomized in parcels of 20 m of long and wide The utilized materials they are characteristic of a field investigation and the cultural attentions were carried out by the Technical Instructive of the Tobacco (2011). the main indicators of the cultivation were evaluated like they were number of leaves, long and wide of the leaves, dry mass and yield, with its respective economic valuation. The data were processed with the statistical package it ESTATISTICA version 8 on Windows, through an analysis of simple variance and a test of multiple comparison for Tukey for 5% of probability of the error, The reached results indicate us that the best yields are obtained when the plants have a distance among them of 0.30 m and the lowest results when they are planted 0.25 m. [ABSTRACT FROM AUTHOR]

The work was carried out in an organoponic in Holguín province. Cucumber cultivation, Poinset variety, was chosen with the objective of evaluating the effects of Biobras 16, when the seeds are soaked in it and the irrigation time decreases by 10, 30 and 50%, we assessed its influence on the yield and the quality of fruits. Major yield components were measured and the development stages of the crop. Data were processed by the statistical package version 8 on Windows. Significant conclusions were reached about the positive effects on yield and fruit quality, when reducing irrigation time and seeds are soaked with Biobras-16 before sowing. [ABSTRACT FROM AUTHOR]