Cotton is an important industrial crop in the textile sector, it is the most important natural fiber produced in the world. The quality of cotton fiber is mainly reflected in length, fineness and resistance. The cotton fiber arrives attached to the seeds from the field and goes through the ginning process. The objective of the present study was to find a relationship between the RPM speeds at which the saw gin works used for cotton ginning, and the fiber length, fineness and resistance. Data were obtained from the average of ten samples, ten samples of between 18 and 20 grams of cotton fiber were used as an experimental unit. The response variables were the length of 2.5% of the fiber, 50, 60 and 70%, as well as the fineness and strength of the fiber. The experimental design was a CRD with nine repetitions and three treatments that were 700, 650 and 580 RPM. A significant difference betw...

Cotton is an important industrial crop in the textile sector, it is the most important natural fiber produced in the world. The quality of cotton fiber is mainly reflected in length, fineness and resistance. The cotton fiber arrives attached to the seeds from the field and goes through the ginning process. The objective of the present study was to find a relationship between the RPM speeds at which the saw gin works used for cotton ginning, and the fiber length, fineness and resistance. Data were obtained from the average of ten samples, ten samples of between 18 and 20 grams of cotton fiber were used as an experimental unit. The response variables were the length of 2.5% of the fiber, 50, 60 and 70%, as well as the fineness and strength of the fiber. The experimental design was a CRD with nine repetitions and three treatments that were 700, 650 and 580 RPM. A significant difference betw...

Organic fertilizers provide important benefits to the soil and therefore to plants, so it is important to evaluate their effects on different crops. In the present study, the effect of seven organic fertilizers and two levels of organic fertilization was evaluated for the variables plant height, dry matter, total nitrogen extraction, total phosphorus extraction and total potassium extraction in Agroceres variety corn as an indicator plant. under greenhouse conditions in Ica, in a completely randomized design. Chicken manure was the best organic source for the variable plant height. Compost treatments were superior for the total nitrogen extraction variable. The manure treatments stood out in the variable total phosphorus extraction. No significant differences were found between organic sources for total potassium extraction or a clear trend for the dry matter variable. Finally, significa...

Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Innovación Agraria para el Desarrollo Rural

Cotton is an important industrial crop in the textile sector, it is the most important natural fiber produced in the world. The quality of cotton fiber is mainly reflected in length, fineness and resistance. The cotton fiber arrives attached to the seeds from the field and goes through the ginning process. The objective of the present study was to find a relationship between the RPM speeds at which the saw gin works used for cotton ginning, and the fiber length, fineness and resistance. Data were obtained from the average of ten samples, ten samples of between 18 and 20 grams of cotton fiber were used as an experimental unit. The response variables were the length of 2.5% of the fiber, 50, 60 and 70%, as well as the fineness and strength of the fiber. The experimental design was a CRD with nine repetitions and three treatments that were 700, 650 and 580 RPM. A significant difference betw...

Organic fertilizers provide important benefits to the soil and therefore to plants, so it is important to evaluate their effects on different crops. In the present study, the effect of seven organic fertilizers and two levels of organic fertilization was evaluated for the variables plant height, dry matter, total nitrogen extraction, total phosphorus extraction and total potassium extraction in Agroceres variety corn as an indicator plant. under greenhouse conditions in Ica, in a completely randomized design. Chicken manure was the best organic source for the variable plant height. Compost treatments were superior for the total nitrogen extraction variable. The manure treatments stood out in the variable total phosphorus extraction. No significant differences were found between organic sources for total potassium extraction or a clear trend for the dry matter variable. Finally, significa...

The aim of this work was to identify the insects and spiders associated with ornamental plants in David, Chiriquí, Panama. For this, five random samplings were carried out in four locations, selecting 35 plant species and collecting the specimens manually. The identification of insects and spiders was made by consulting specialized documentation and photographs were taken. According to the results, the predominant species of spiders in ornamentals were Argiope argentata (Fabricius, 1775) (Araneae: Araneidae) and Leucauge venusta (Walckenaer, 1841) (Araneae: Tetragnathidae). Phytophagous insects were represented by the order Phasmatodea and Oiketicus kirbyi Guilding, 1827 (Lepidoptera: Psychidae) feeding on palm leaves (Arecaceae); three species of grasshoppers associated with Toro grass, from which Taeniopoda varipennis Rehn, 1905 (Orthoptera: Romaleidae) stood out; Scarabaeidae and Chr...

The aim of this work was to identify the insects and spiders associated with ornamental plants in David, Chiriquí, Panama. For this, five random samplings were carried out in four locations, selecting 35 plant species and collecting the specimens manually. The identification of insects and spiders was made by consulting specialized documentation and photographs were taken. According to the results, the predominant species of spiders in ornamentals were Argiope argentata (Fabricius, 1775) (Araneae: Araneidae) and Leucauge venusta (Walckenaer, 1841) (Araneae: Tetragnathidae). Phytophagous insects were represented by the order Phasmatodea and Oiketicus kirbyi Guilding, 1827 (Lepidoptera: Psychidae) feeding on palm leaves (Arecaceae); three species of grasshoppers associated with Toro grass, from which Taeniopoda varipennis Rehn, 1905 (Orthoptera: Romaleidae) stood out; Scarabaeidae and Chr...