Optimización de agua de riego en alfalfa (Medicago sativa L.) utilizando sensores de humedad en el suelo

The goal of this study was evaluation of three soil moisture levels measured with electronic sensors in alfalfa crops (T1 = 5-15 cbar, T2 = 50-75 cbar and T3 90-110 cbar), previously calibrated for the study area. Variables such as dry matter yield (DM) and irrigation water productivity (PA) were valuated. The values obtained were 6.65 6.35 at 5.27 t ha-1 for DM and 2.67 4.02 at 3.87 kg m-3 for PA as a function of crop Evapotranspiration (ETc ) With values of 248.64, 157.96 and 136.30 mm for T1, T2 and T3 respectively. These results allow us to conclude that keeping the soil moisture tension at 50-75 cbar, i.e. 21% ± 2.3% of soil humidity, the highest water productivity in the crop can be reached

identification of common parameters in an onion crop (Allium cepa) by PDI

Para comprender el crecimiento de un cultivo, es necesario conocer e identificar los parámetros que influyen en su desarrollo. Para ello se requieren herramientas adecuadas, derivadas de la combinación de la agricultura con las tecnologías electrónicas existentes hasta hoy en día; las cuales ayudan a identificar información y características que interfieren en los procesos fisiológicos de las plantas. El objetivo de esta investigación fue aplicar PDI a imágenes aéreas, tomadas sobre un cultivo de cebolla en la región zacatecana, para encontrar las problemáticas que afectan su crecimiento. Se desarrolló e implementó un algoritmo, en el lenguaje de programación Python 3.6®, con la finalidad de estimar de manera automática, algunas anomalías comunes a nivel parcelario en cebolla, como: la maleza, la densidad poblacional de vegetación y exceso de humedad incluyendo fugas, encontrando un porcentaje de 90, 95.08 y 80.44 respectivamente, los porcentajes mencionados fueron obtenidos en función de la comparación automática-visual

Breast Cancer Detection by Means of Artificial Neural Networks

Breast cancer is a fatal disease causing high mortality in women. Constant efforts are being made for creating more efficient techniques for early and accurate diagnosis. Classical methods require oncologists to examine the breast lesions for detection and classification of various stages of cancer. Such manual attempts are time consuming and inefficient in many cases. Hence, there is a need for efficient methods that diagnoses the cancerous cells without human involvement with high accuracies. In this research, image processing techniques were used to develop imaging biomarkers through mammography analysis and based on artificial intelligence technology aiming to detect breast cancer in early stages to support diagnosis and prioritization of high-risk patients. For automatic classification of breast cancer on mammograms, a generalized regression artificial neural network was trained and tested to separate malignant and benign tumors reaching an accuracy of 95.83%. With the biomarker and trained neural net, a computer-aided diagnosis system is being designed. The results obtained show that generalized regression artificial neural network is a promising and robust system for breast cancer detection. The Laboratorio de Innovacion y Desarrollo Tecnologico en Inteligencia Artificial is seeking collaboration with research groups interested in validating the technology being developed

Optimización de agua de riego en alfalfa (Medicago sativa L.) utilizando sensores de humedad en el suelo

The goal of this study was evaluation of three soil moisture levels measured with electronic sensors in alfalfa crops (T1 = 5-15 cbar, T2 = 50-75 cbar and T3 90-110 cbar), previously calibrated for the study area. Variables such as dry matter yield (DM) and irrigation water productivity (PA) were valuated. The values obtained were 6.65 6.35 at 5.27 t ha-1 for DM and 2.67 4.02 at 3.87 kg m-3 for PA as a function of crop Evapotranspiration (ETc ) With values of 248.64, 157.96 and 136.30 mm for T1, T2 and T3 respectively. These results allow us to conclude that keeping the soil moisture tension at 50-75 cbar, i.e. 21% ± 2.3% of soil humidity, the highest water productivity in the crop can be reached

Extraction of Pest Insect Characteristics Present in a Mirasol Pepper (Capsicum annuum L.) Crop by Digital Image Processing

One of the main problems in crops is the presence of pests. Traditionally, sticky yellow traps are used to detect pest insects, and they are then analyzed by a specialist to identify the pest insects present in the crop. To facilitate the identification, classification, and counting of these insects, it is possible to use digital image processing (DIP). This study aims to demonstrate that DIP is useful for extracting invariant characteristics of psyllids (Bactericera cockerelli), thrips (Thrips tabaci), whiteflies (Bemisia tabaci), potato flea beetles (Epitrix cucumeris), pepper weevils (Anthonomus eugenii), and aphids (Myzus persicae). The characteristics (e.g., area, eccentricity, and solidity) help classify insects. DIP includes a first stage that consists of improving the image by changing the levels of color intensity, applying morphological filters, and detecting objects of interest, and a second stage that consists of applying a transformation of invariant scales to extract characteristics of insects, independently of size or orientation. The results were compared with the data obtained from an entomologist, reaching up to 90% precision for the classification of these insects