Impact of adoption of heat-stress tolerant maize hybrid on yield and profitability: evidence from Terai region of Nepal

Atul Kulkarni Keshab Babu Koirala Pervez Zaidi (2023, [Artículo])

Inverse Probability Weighted Regression Heat Tolerant Maize Hybrid Partial Budget CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA HEAT STRESS HEAT TOLERANCE MAIZE HYBRIDS BUDGETS YIELDS

Grazing behavior of New Zeland holstein cows with access to shade

Rodolfo Ramírez-Valverde Juan Burgueño (2022, [Artículo])

Temperature and Humidity Index Artificial Shade CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA SHADING DAIRY COWS SOLAR RADIATION

Nitrogen use efficiency and genotype-by-environment interaction in durum wheat genotypes under varying nitrogen supply

Tesfaye Geleta Aga Bekele Abeyo (2024, [Artículo])

Straw Nitrogen Uptake Nitrogen Harvest Index CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA NITROGEN-USE EFFICIENCY STRAW GENOTYPE ENVIRONMENT INTERACTION HARD WHEAT

Willingness to pay (WTP) for heat-tolerant maize hybrids in the Mid-Western Terai region of Nepal

Atul Kulkarni Keshab Babu Koirala Pervez Zaidi (2023, [Artículo])

Heat-Tolerant Maize Hybrid Preference Heterogeneity CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA HEAT TOLERANCE MAIZE HYBRIDS WILLINGNESS TO PAY CONTINGENT VALUATION

Changes in soil organic carbon pools after 15 years of Conservation Agriculture in rice (Oryza sativa)-wheat (Triticum aestivum) cropping system of eastern Indo-Gangetic plains

C.M. Parihar Mahesh Gathala ML JAT (2023, [Artículo])

The present study was carried out at Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar during 2021-2023 to focus on examining alterations in SOC pools resulting from conservation agriculture (CA) practices in R-W system in the eastern IGP, following the collection of soil samples from a long-term trial that was initiated in rainy (kharif) season 2006. The trial included eight combinations, namely: conventional tilled rice (Oryza sativa L.) and wheat (Triticum aestivum L.) (CTR-CTW); CT rice and zero till wheat (CTR-ZTW); direct seeded rice (DSR) and wheat on permanent raised beds (PBDSR-PBW); ZTDSR and CT Wheat (ZTDSR-CTW); ZTDSR and ZT wheat without residue (ZTDSR-ZTW-R); ZTDSR-ZT wheat with residue (ZTDSR-ZTW +R); unpuddled transplanted riceZTW (UpTR-ZTW) and ZTDSR-sesbania brown manure-ZTW (ZTDSR-S-ZTW). Results revealed that implementing zero tillage (ZT) combined with residue retention in rice and wheat cultivation led to enhanced levels of soil organic carbon (SOC) across all four fractions, namely very labile (CVL), labile (CL), less labile (CLL), and non-labile (CNL), in comparison to the continuous and rotational tillage practices. The tillage and residue management options significantly affected the lability index (LI) and C pool index (CPI), with zero-tillage and residue retention leading to lower LI and higher CPI values. The management practices significantly affected the C management index (CMI), with zero-tillage and residue retention showing the highest CMI values. Findings showed the potential of CA practices for enhancing soil C quality as well as C sequestration in soil of the Eastern IGP of India.

Carbon Management Index Soil Organic Carbon Fractions CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CONSERVATION AGRICULTURE SOIL ORGANIC CARBON ZERO TILLAGE

Agro-morphological characterization and estimation of genetic parameters of spring maize hybrids in the inner plains of Far-West Nepal

Sandesh Thapa Darbin Joshi (2022, [Artículo])

Heat Resilient Maize Phenotypic Coefficient of Variation Heritable Traits CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA GENETIC PARAMETERS MAIZE HYBRIDS

Satellite imagery for high-throughput phenotyping in breeding plots

Francisco Pinto Mainassara Zaman-Allah Matthew Paul Reynolds Urs Schulthess (2023, [Artículo])

Optimized Soil Adjusted Vegetation Index CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA HIGH-THROUGHPUT PHENOTYPING SATELLITES WHEAT MAIZE BREEDING NORMALIZED DIFFERENCE VEGETATION INDEX

Low nitrogen narrows down phenotypic diversity in durum wheat

Tesfaye Geleta Aga Bekele Abeyo (2023, [Artículo])

Clusters Durum Wheat Nitrogen Efficiency CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA HARD WHEAT GENETIC DIVERGENCE NORMALIZED DIFFERENCE VEGETATION INDEX NITROGEN PRINCIPAL COMPONENT ANALYSIS

Low thermal conductivity solar domestic water heater

MIGUEL ANGEL PORTA GANDARA JOSE LUIS FERNANDEZ ZAYAS JUAN FRANCISCO VILLA MEDINA NORBERTO CHARGOY DEL VALLE (2022, [Artículo])

"Solar domestic water heaters (SWH) with thermosyphon circulation are the most common commercial applications of solar energy in Mexico. They are also becoming popular in the rest of the world, given their simplicity, good economic returns, and sustainability. Traditionally the solar collector, the piping, and the storage tank are built of copper and steel. However, wáter quality in many parts of the Mexican Northwest has high mineral contents and, when heated, results in early metal pitting corrosion of SWH parts. Short-lived water heaters are bad promoters of the technology. In this work, a SWH thermoplastic Chlorinated Polyvinyl Chloride (CPVC) is built and tested under real operating conditions in La Paz, BCS, Mexico. The optimal design is detected with the aid of a suitable numerical model. Results reveal that a full SWH-CPVC can be technically and economically convenient for the weather conditions of the Northwestern states of Mexico."

Low thermal conductivity solar water heater CPVC solar water heater Solar water heater cooper pitting corrosion Thermosiphon circulation INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS TECNOLOGÍA ELECTRÓNICA DISPOSITIVOS TERMOELÉCTRICOS DISPOSITIVOS TERMOELÉCTRICOS

Funcionalidad física de los arrecifes de coral en el Pacífico mexicano (Bahía de Los Ángeles, Bahía de La Paz, Bahía de Banderas y Bahías de Huatulco

Physical functionality of coral reefs in the mexican Pacific (Bahía de Los Ángeles, Bahía de La Paz, Bahía de Banderas y Bahías de Huatulco)

CLAUDIA REBECA NAVARRETE TORICES (2023, [Tesis de maestría])

Los corales son la base en la estructura y funcionamiento de los arrecifes. Sin embargo, en las últimas décadas, estos ecosistemas han sufrido un deterioro debido a presiones naturales, antrópicas y factores de gran escala como el cambio climático. En general, la cobertura de corales ha disminuido y aunque en algunos casos se ha observado su recuperación, la caracterización de la funcionalidad de la estructura física de los sistemas ha sido escasamente explorada. El presente trabajo evalúa la funcionalidad física de los arrecifes de coral en cuatro áreas a lo largo del Pacífico mexicano, empleando el Índice Funcional Arrecifal (IFA). El IFA considera la tasa de calcificación, la complejidad estructural y la abundancia de las especies de coral de en cada sitio; los valores que el índice puede adquirir varían de cero a uno, son valores cercanos a cero refieren a un arrecife con baja funcionalidad, mientras que los valores cercanos a uno indican un arrecife con alta funcionalidad. La cobertura coralina promedio de las cuatro áreas fue 35.62 ± 15.01%, siendo Bahías de Huatulco (BH) quien presentó la mayor cobertura coralina con 55.61 ± 21.94 %, mientras que Bahía de Los Ángeles (BLA) tuvo la menor cobertura coralina (17.16 ± 0.08 %). El IFA promedio de las áreas fue de 0.54 ± 0.12, y con base en el indicador, BH tuvo una mayor funcionalidad con un IFA de 0.68 ± 0.09, mientras que BLA tuvo una menor funcionalidad (0.34 ± 0.08). Los corales del género Pocillopora fueron los que mayor IFA aportaron en la mayoría de los sitios excepto en BLA que es representada por Porites panamensis. El coral con mayor coeficiente funcional (CF) fue Pocillopora grandis con 0.81, perteneciente a Bahía de Banderas (BB) y por ende fue el coral que mayor contribuyó al IFA en el área. El valor del IFA de 0.68 a lo largo del Pacífico mexicano, nos indica que tiene una alta complejidad estructural, debido a la forma de los corales Pocillopora que son clave para la permanencia de los arrecifes del área.

Corals are the basis for the structure and functioning of reefs. However, in recent decades, these ecosystems have suffered deterioration due to natural and anthropogenic pressures and large-scale factors such as climate change. In general, coral cover has decreased and although in some cases their recovery has been observed, the characterization of the functionality of the physical structure of the systems has been barely explored. This study evaluates the physical functionality of coral reefs in four areas along the Mexican Pacific, using the Reef Functional Index (IFA). The IFA considers the calcification rate, structural complexity, and abundance of coral species at each site; The values that the index can acquire vary from zero to one, values close to zero refer to a reef with low functionality, while values close to one indicate a reef with high functionality. The average coral cover of the four areas was 35.62 ± 15.01%, with Bahías de Huatulco (BH) having the highest coral cover with 55.61 ± 21.94%, while Bahía de Los Ángeles (BLA) had the lowest coral cover (17.16 ± 0.08%). The average IFA of the areas was 0.54 ± 0.12, and based on the indicator, BH had higher functionality with an IFA of 0.68 ± 0.09, while BLA had lower functionality (0.34 ± 0.08). Corals of the genus Pocillopora were the ones that contributed the highest IFA in most of the sites except in BLA, which is represented by Porites panamensis. The coral with the highest functional coefficient (CF) was Pocillopora grandis with 0.81, belonging to Bahía de Banderas (BB) and therefore was the coral that contributed the greatest to the IFA in the area. The IFA value of 0.68 along the Mexican Pacific indicates that it has a high structural complexity, due to the shape of the Pocillopora corals that are key to the permanence of the reefs in the area.

Corales, Pocillopora, Índice de función arrecifal, Pacífico mexicano Corals, Pocillopora, mexican Pacific, Reef Functional Index BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA OTRAS ESPECIALIDADES DE LA BIOLOGÍA OTRAS OTRAS