Soil is the base of any ecosystem since it conserves nutrients and water for plant roots including agriculture and plantations. In dry and semi-arid places across the world, including the UAE, sandy soils are common. Their fertility is extremely low, and production is hampered by a number of agronomic challenges. Soil conditioner sources like bentonite and chicken manure might be used to improve the poor sandy soil attributes and hence boost soil productivity. From November 2019 to March 2020, an experiment was conducted to investigate the growth rates of Bougainvillea following bentonite and chicken manure amendments to sandy soil taken from Lehbab, Dubai. Bougainvillea was evaluated for its plant height (cm), max length of primary branch (cm), the number of leaves per plant, number of secondary branches, shoot weight (g), root length (cm), root weight (g), root/shoot ratio, chlorophyll contents, and chlorophyll a* and b*. In this experiment, a complete randomized design (CRD) with five treatments was used (10 replications per treatment). According to the findings, bentonite and chicken manure additions considerably influence the productive properties of sandy soil, as indicated by Bougainvillea growth. Additionally, the research suggests that Bougainvillea may be efficiently planted with 10% bentonite and 15% chicken manure applied to sandy soil, resulting in the healthiest plants compared to other amendments.

Abiotic factors pose a significant constraint for food security and agricultural production worldwide, and the issue has been exacerbated by extreme and rapid climate change. Heat and drought are the most important limiting factors that have a significant influence on crop growth and production. For better management, it is critical to understand the biochemical, ecological and physiological responses to these stresses. Plant responses to these challenges may be divided into three categories: phonological, physiological and biochemical. This review gives a thorough description of plant adaptations towards drought and heat stress, with a particular emphasis on identifying similarities and variations. As a result of physical damage, biological disruption and biochemical abnormalities, suboptimal water supplies and unusual temperatures negatively impact crop development and yields. However, both of these stressors have a wide range of impacts and are thus complex to explain in terms of mechanics. More profound knowledge of how plants respond to various challenges can lead to more practical solutions and management. A distinctive aspect of the phenomenon is comparing fundamental behaviour with abiotic stresses.

Los suelos donde se emplazan la actividad minera en el Perú, se distinguen por que en su estructura se encuentran metales que causan daños graves al ambiente. El objetivo fue demostrar la capacidad fitorremediadora de las plantas Alopecurus magellanicus var. bracteatus y Muhlenbergia angustata en suelos adulterados por plomo y cadmio. Se hizo una búsqueda en EBSCOhost, LILACS, SciELO, ScienceDirect, Redalyc, PubMed, Scopus y Web of Science, usando los descriptores “Fitorremediación”, “Alopecurus magellanicus var. Bracteatus”, “Muhlenbergia angustata”, “Contaminación de suelo” y “metales pesados”, seleccionando 60 artículos para analizar la capacidad fitorremediadora del Alopecurus magellanicus var. bracteatus y Muhlenbergia angustata, determinando la efectividad de dichas plantas para remover los metales en mención, de suelos contaminados por las diversas actividades vinculadas al sector minero. Los tratamientos obtuvieron óptimos resultados al analizar la capacidad fitorremediadora y al valorar los suelos después del tratamiento, encontrándose que el Alopecurus magellanicus var. Bracteatus, es la más efectiva para remover plomo y cadmio. Concluyendo que el Alopecurus magellanicus var. bracteatus acumula mayor cantidad de plomo y cadmio en sus raíces y tallos, y a la vez es una planta estabilizadora más eficiente para estos metales.

Las patologías neumónicas son de importancia clínica en crianza de alpacas; sin embargo, el conocimiento de tipos neumónicos y las causas bacterianas es muy limitado. El objetivo es caracterizar las neumonías y las bacterias causantes de neumonías en neonatos de alpacas muertas en comunidades altoandinas de Huancavelica, Perú. La muestra consistió en 365 crías muertas de alpacas menores de 45 días de edad, procedentes de 10 comunidades; se tomaron hisopados traqueales en 216 de ellas para estudios microbiológicos con buffer peptonada por resultar casos de neumonías. La identificación macroscópica de neumonías se hizo mediante el test foto documentador. Se cultivaron la Pasteurella multocida y Mannheimia haemolytica en agar Colombia enriquecidas con sangre de alpaca; Streptococcus pneumoniae en agar Infusión Cerebro Corazón suplementadas con sangre de alpaca e identificadas mediante caracterización morfológica, microscópica, reacciones bioquímicas y optoquina. Se encontraron 59,8% de mortalidad por neumonía y 40,2% por otras causas, caracterizándose neumonía por inflamación 55,1%; 44,9% por lesión y subtipos: Exudativa 9,5%, Supurativa 3,8%, Proliferativa 42,3%, Lobar 17,8%, Intersticial 26,6%, aislándose cepas de Streptococcus pneumoniae 43,7%, Mannheimia haemolytica 14,9%, Pasteurella multocida 20,9%, asociadas con Streptococcus pneumoniae-Pasteurella multocida 10,7%. Se evidenció una alta frecuencia de tipos, subtipos de neumonías asociados a bacterias Gram (+) como causales de neumonías en crías de alpaca con predomino en tres comunidades altoandinas de Huancavelica, Perú.

The research problem is centered on the lack of agricultural education proposals for a sustainable life project in rural Peruvian students at the secondary level. The present study has the purpose of developing a documentary diagnosis on the situation of agricultural education of students in rural areas, at the secondary level, considering as bases of the model the didactic, psycho-pedagogical and gnoseological characterization that allows the systematization of a proposal, exercising for it a bibliographic scrutiny of the state of the art in its heuristic and hermeneutic phases with the historiographic analysis on the teaching-learning of students according to the secondary level in rural areas. The present work is descriptive and propositive, so it is based on an urgent requirement within Peruvian institutions. Theoretical aspects will be contributed as support for other studies concerning the education sector. Within the framework of a practical significance is the preparation of an agricultural education offer for the improvement of the sustainable life project. It is concluded that the curricula offered by the educational institutions do not cover the training deficiencies of the students in their agricultural activities.