The continued use of agrochemicals in Valle de Arista, SLP, Mexico, has generated loss of effectiveness of active ingredients and impacts on public health and the environment. To identify environmental and socioeconomic impacts, a quantification method was designed using the Kovach Environmental Impact Quotient and environmental accounting of pesticides (Leach and Mumford) that included agricultural diagnosis and identification of agrochemical impacts. Producers, technical advisors and agrochemicals dealers were surveyed as key agents of tomato (Solanum lycopersicum) and chili pepper crops (Capsicum annuum) due to their economic importance. Gower quotation coefficients were calculated to measure similarity of quantitative, qualitative and dichotomous variables with continuous, discrete and binary characteristics. The use of fungicides (carbendazim and chlorothalonil) showed the greatest environmental impact, followed by insecticides (endosulfan and thiametoxam) and herbicides. The negative externality averaged US$15.60 ha⁻¹ annually, corresponding to 50% of tomato, 31.25% of poblano pepper and 18.75% of serrano pepper. Estimated damages due to the use of greenhouses were 37.7% to the consumer, 21.2% to the worker, 14.8% to aquatic life, 3.6% to birds, 9.2% to bees and 3.3% to insects.

Los sistemas agrícolas convencionales, basados en el uso de tecnología agrícola -no amigable con el ambiente -como- uso excesivo de plaguicidas, fertilizantes y la mecanización (labranza) han afectado las propiedades físicas, químicas y biológicas del suelo, lo anterior pone en riesgo la fertilidad del suelo y consecuentemente su degradación, además implica mayores costos de producción. A partir de 1950 hubo un fuerte desarrollo agrícola e industrial, así como alto crecimiento demográfico (2,500 millones de habitantes en 1959 a 6,060 millones en 2000), que requirió más servicios entre estos la urbanización, mayor demanda del agua y la producción de alimentos, lo cual aceleró la degradación de suelos, a un nivel preocupante para finales del siglo XX.

Objective: To estimate the composition and winter abundance of waterfowl for hunting in a Wildlife Conservation Management Unit (UMA), within the Malaga wetlands complex, Durango, Mexico. Design/Methodology/Approach: In the winter of 2019, waterfowl for hunting were identified and quantified in an UMA of the Malaga wetlands complex, Durango, Mexico. The birds were counted with the point count methodology in five repetitions, in order to estimate their specific richness and abundance in each one. These variables were compared using the Kruskal-Wallis test (p < 0.05). Results: A total of 21,620 birds from 18 species were registered. The most frequent families were the Anatidae, Rallidae, and Gruidae. Anser albifrons, A. caerulescens, and Anas crecca were the most abundant species. This abundance increased according to the number of tests. Therefore, the highest proportion of birds was recorded in the last sampling (p < 0.05). Study Limitations/Implications: This study provides baseline demographic information for this group of birds that inhabits the Durango wetlands. However, long-term monitoring is necessary to determine the demographic dynamics of these species. Findings/Conclusions: The study site is diverse and important for the waterfowl for hunting that spend the winter in Durango, Mexico

Objective: To characterize and compare the yield and bromatological composition —such as fresh matter, crude protein, and other nutritional indicators— of two corn (Zea mays L.) hybrids, developed under fertigation conditions, at three different plant densities. Design/Methodology/Approach: The experiment was conducted using a factorial experimental design with two factors (hybrids) and three levels (densities). Results: The CEBU hybrid recorded the highest fresh and dry matter yield. According to the bromatological analysis, it also obtained the highest crude protein (CP) values and total ash content. Meanwhile, the A7573 hybrid reached a higher total carbohydrate content. Study Limitations/Implications: The low temperatures recorded during the experiment impacted both the corn plant and crop development cycles. Findings/Conclusions: The agronomic characteristics and nutritional value of evaluated hybrids recorded significant differences. CEBU had a more efficient forage and biomass production in all the evaluated sowing densities (50,000, 62,500, and 83,333 plant ha-1). In the bromatological analysis, CEBU obtained a higher crude protein and ash content than A7573. However, A7573 recorded a higher total carbohydrate content than CEBU.

Larrea tridentata, commonly referred to as the creosote bush in North America and gobernadora in Mexico, is a plant species distinguished by the diversity of its bioactive compounds and its adaptation to arid environments. This plant has received attention due to its use for generations in traditional Mexican medicine, including many conditions such as, inflammation, infections, metabolic disorders such as, diabetes, and many chronic illnesses associated with oxidative stress and cancer. Much of this interest stems from its unusually high phenolic content, such as lignans, flavonoids, and related compounds found throughout the plant. In this chapter, the antioxidant and antiproliferative potential of L. tridentata is evaluated with the aim of exploring its possible application as a natural herbal supplement. Radical scavenging activity of the extract was measured by DPPH• and ABTS•+ assays, yielding IC50 values around 270.47 µg/mL and 542.68 µg/mL, respectively. Regarding antiproliferative activity, a substantial reduction in cell proliferation was observed, most notably in breast cancer cells. Chromatographic analysis by HPLC further confirmed the presence of five flavonoids – quercetin, kaempferol, apigenin, galangin, and naringenin – all of which have previously documented biological activity. These findings support the integration of traditional knowledge with experimental evidence to better understand L. tridentata as a source of pharmacologically relevant compounds.