In the present investigation, the growth and yield of pickle type cucumber plants were evaluated. An experiment was established under greenhouse conditions with pickle-type cucumber plants in flexible plastic containers with a substrate of volcanic origin and coconut fiber in a 75:25 v/v ratio. The treatments consisted of evaluating two pruning systems: a) pruning with axillary shoots and b) pruning without axillary shoots, leaving one leaf and one fruit. Likewise, two variants of Steiner's Universal Solution were used: a) nutrient solution at 75% of its original concentration and b) nutrient solution at 75% of its concentration, varying the NO3:K+ ratio (9:10 meq L-1). Four samplings were carried out at 76, 91, 106 and 121 days after sowing. A completely randomized design with a 2x2 factorial arrangement with five repetitions per treatment was used. It was quantified: days to flowering, days to harvest, plant height, number of leaves and leaf area, leaf area index, number of fruits per plant, total yield and diameter, length and weight of the fruit. It was determined that the Steiner solution with the variation in the NO3: K+ (9:10) ratio and a pruning of axillary shoots produced a greater number of leaves and leaf area than that of Steiner at 75 % while, for the number of fruits produced per plant, the 75 % Steiner solution was the one that promoted the best results. Therefore, the use of the 75% Steiner nutrient solution and pruning with axillary shoots are recommended, for large-scale establishments such as greenhouses, since greater production is obtained from 76, 91 and 106 days later. of sowing.

The objective of the present work was to offer an in vitro propagation alternative for the Oncidium sphacelatum orchid through the evaluation of the response to the crop in different concentrations of sucrose and the nutrient medium of Murashige and Skoog. Initially the seeds were sown in this culture medium at 100% of their concentration with the addition of 3.0% sucrose, once formed the protocorms the response to the application of different sucrose concentrations was evaluated (3.0, 2.25, 1.5, 0.75 and 0%) and of the nutrients of the culture medium (100, 75, 50, 25 and 0%) under a completely randomized experimental design of eight treatments with four repetitions. The analysis of variance showed statistical differences between treatments for the formation of buds in the protocorms, number of leaves per bud, plant height, root length and formation of pseudobulbs in the shoots. The highest outbreak formation in the protoorms was observed in treatments with 3.0% sucrose and nutrient concentrations at 50 or 25%. For the growth of the leaves and the root the concentration of 3.0% of sucrose was required combined with the concentrations of nutrients at 25, 50 and 100%. The formation of pseudobulbs in the outbreaks only occurred in the treatment with 3.0% sucrose combined with the 25% nutrient concentration.

This research was carried out in the communities of Tonino and Divisadero municipality of Compostela, Nayarit, Mexico with the objective of studying the effect of natural, entomophilic and manual pollination of soursop fruits. Pollinations were carried out during the June-July period of 2017 (summer flowering). Which treatments consisted of the natural pollination that only perforated bagging was placed, The variables were: peduncle diameter, brush or strawberry diameter, percentage of yield, percentage of fruit fall, dynamics or general kinetics of growth variables and general behavior of loss and fruit fall. Percentage yield as it was low from 6 to 21% and this decreased as the evaluation time elapsed due to the fall in fruit. The fall of the fruit of the three treatments was considered to have a very important factor whereby they fell, the lack of coverage with fungicides or insecticides.

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