Resultados de búsqueda - "marginalism"

Tillage and crop establishment effects on weeds and productivity of a rice-wheat-mungbean rotation por Mishra, J.S., Kumar, Rakesh, Mondal, Surajit, Poonia, S.P., Rao, K.K., Dubey, Rachana, Raman, Rohan Kumar, Dwivedi, S.K., Kumar, Rahul, Saurabh, Kirti, Monobrullah, Md, Kumar, Santosh, Bhatt, B.P., Malik, R.K., Kumar, Virender, McDonald, Andrew, Bhaskar, S.

“…Under zero-till rice-wheat system, rice yield decreases marginally, but the system productivity maintains due to improvement in succeeding wheat yield. …”
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Methane and nitrous oxide fluxes in annual and perennial land-use systems of the irrigated areas in the Aral Sea Basin por Scheer, Clemens, Wassmann, Reiner, Kienzler, Kirsten, Ibragimov, Nazar, Lamers, John P.A., Martius, Christopher

“…The analyses point out opportunities for reducing the GWP of these irrigated agricultural systems by (i) optimization of fertilization and irrigation practices and (ii) conversion of annual cropping systems into perennial forest plantations, especially on less profitable, marginal lands.…”
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Rice pest constraints in tropical Asia: quantification of yield losses due to rice pests in a range of production situations por Savary, Serge, Willocquet, Laetitia, Elazegui, Francisco A., Castilla, Nancy P., Teng, Paul S.

“…A first, nonparametric, multivariate analysis led to a hierarchy of potential injuries, from marginally (e.g., bacterial leaf blight) to extremely harmful (e.g., rice tungro disease). …”
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Documentary on towards inclusive canal water management for resilient agri-food systems in coastal Bangladesh por Rahman, M. Mokhlesur, Sarker, Mou Rani

“…The leaseholders monitor and restrict access to canal water – and an anthropogenic water crisis has been created through elite capture – severely restricting water access and use for marginalized, smallholder farmers who make for more than 80% of the total population. …”
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Integrating Multidimensional Sustainability Assessment into Decisions and Policies for Promoting Sustainable Farming in India por Kumar, Shalander, Soumitra, Pramanik, Garg, Kaushal, Anantha, kanugod H., Singh, Ramesh, Jat, Mangi L.

“…Targeted financial and educational support for marginalized households is also crucial for fostering equitable development. …”
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Efficacy of high zinc biofortified wheat in improvement of micronutrient status, and prevention of morbidity among preschool children and women - a double masked, randomized, contr... por Sazawal, Sunil, Dhingra, Usha, Dhingra, Pratibha, Dutta, Arup, Deb, Saikat, Kumar, Jitendra, Devi, Prabhabati, Prakash, Ashish

“…This observation might be due to a marginal difference in zinc content (10 ppm) between the HZn and LZn wheat flour, and a short intervention period. …”
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The impact of the African continental Free Trade Agreement: A continentwide macroeconomic assessment and distributional analysis in Nigeria and Rwanda por Traoré, Fousseini, Mamboundou, Pierre, Diop, Insa, Sy, Abdourahmane

“…Given the continent’s high trans-portation costs, significant gains can occur by reducing transport margins in addition to implementing the AfCFTA. In that case, the positive results are amplified, while the negative effects are dampened. …”
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Report of CGIAR’s Digital Transformation Accelerator side event–AI-powered innovation: Acceleration research for agri-food system transformation por Ojanji, Wandera, Dhulipala, Ram

“…Innovative uses of large language models (LLMs), Interactive Voice Response (IVR) systems, and WhatsApp-based tools emphasized accessibility for low-literacy and digitally marginalized users. • Earth observation and AI for climate adaptation: The University of Galway introduced tracking adaptation progress in agriculture and food security (TAPAS), a platform leveraging satellite data and machine learning to monitor adaptation outcomes, assess investment impacts, and guide climate resilience strategies. • AI in genebank management: The International Rice Research Institute (IRRI) presented transformative use cases of AI in managing rice genetic resources, from automating seed phenotyping to enhancing genetic diversity analysis through image-based classification models and natural language interfaces. • Artemis: AI-powered phenotyping: The Tanzania-based Artemis project was launched as a scalable, AIenabled platform using smartphone-based digital phenotyping. …”
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Realized genetic gain for yield and yield attributes in groundnut breeding at ICRISAT from an ERA trial por Behera, Partha Pratim, Deshmukh, Dnyaneshwar, Vemula, Anil Kumar, Bangaru, Kiranmayee, Bagudam, Rachana, Mathew, Anurag, Purohit, Ashutosh, Vishnumolakala, Aparna, Wankhade, Ankush P., Kounain, Safinaaz, Guguloth, Nehru, Variath, Murali T., Kurva, Mukhthambica, Potupureddi, Gopi, Muragesan, Surya, Raman, Anitha, Pasupuleti, Janila

“…The Spanish Bunch germplasm recorded a higher realized GG of 46.45 kg ha-¹ year−1 (2.95%) for pod yield, compared to the Virginia Bunch germplasm with a marginal gain of 5.97 kg ha-¹ year−1 (0.23%). Higher RGG is realized in medium-duration and late-maturing germplasm with 27.1 kg ha-¹ year−1 (1.62%) and 25.32 kg ha-¹ year−1 (1.52%), respectively, while realized GG in early-maturing germplasm was 8.37 kg ha-¹ year−1 (0.5%). …”
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Rural poverty and Food insecurity mapping at district level for improved agricultural water management in the Limpopo River Basin por Magombeyi, Manuel Simba, Akpofure, Taigbenu, Barron, Jennie

“…Poverty maps that highlight areas marginalized by resource constraints help in setting priorities for developing technologies and in deploying resources where they are most needed and likely to alleviate poverty and food insecurity. …”
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Simulating current and future water resources development in the Blue Nile River Basin. por McCartney, Matthew P., Alemayehu, T., Easton, Z.M., Awulachew, Seleshi Bekele

“…The total irrigation water demand for the medium-term scenario exceeds the Nile mean annual flow marginally. The irrigation demands for the long-term scenario are considerably greater than the mean annual flow of the Nile basin, assuming the existing management practice and irrigation water requirement estimation of the countries. …”
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Trends in productivity of crops, fallow and rangelands in Southwest Niger: Impact of land use, management and variable rainfall por Hiernaux, Pierre H.Y., Ayantunde, Augustine A., Kalilou, A., Mougin, E., Gerard, Bruno G., Baup, F., Grippa, M., Djaby, B.

“…Indeed, the remaining rangelands on marginal land and the fallows still accessible to livestock are subject to such a heavy grazing during the rainy season that the herbaceous standing mass measured at the end of the season reflects poorly the actual production. …”
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Bulldozers against mosquitoes: Environmental management options for malaria control in North-Central Sri Lanka. [Abstract only]. por Boelee, Eline, Weerasinghe, A.K., Amerasinghe, Priyanie H., Piyaratne, M.K., Perera , D., Amerasinghe, Felix P.

“…Larvae of An. culicifacies and An. varuna were found at the stream margins before and after intervention at low flows. …”
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Integration of mid-infrared spectroscopy and geostatistics in the assessment of soil spatial variability at landscape level por Cobo Borrero, Juan G., Dercon, G., Yekeye, T, Chapungu, L, Kadzere, C, Murwira, A, Delve, Robert J., Cadisch, Georg

“…With regard to locations, fewer samples were needed in the new resettlement area than in the other two areas (e.g. 66 versus 133–473 samples for estimating soil C at 10% error, respectively); regarding parameters, less samples were needed for estimating pH and sand (i.e. 3–52 versus 27–504 samples for the remaining properties, at same error margin). Spatial analyses of soil properties in each village were assessed by constructing standardized isotropic semivariograms, which were usually well described by spherical models. …”
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Variable grain legume yields, responses to phosphorus and rotational effects on maize across soil fertility gradients on African smallholder farms por Zingore, Shamie, Murwira, Herbert K., Delve, Robert J., Giller, Kenneth E.

“…On the sandy soil, P was used more efficiently and gross margins were greater when SSP and manure were applied to maize in a maize soyabean rotation. …”
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An integrated evaluation of strategies for enhancing productivity and profitability of resource-constrained smallholder farms in Zimbabwe por Zingore, Shamie, González Estrada, E., Delve, Robert J., Herrero, Mario, Dimes, John P., Giller, Kenneth E.

“…The poor farm’s income was marginally increased by US$18 yr−1 and the soil nitrogen (N) balance was increased from 6 to 9 kg ha−1 yr−1 by expanding groundnut production from the previous 5–25% of the land area. …”
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Value-chain analysis — An assessment methodology to estimate Egyptian aquaculture sector performance por MacFadyen, G., Nasr-Allah, A.M., Al-Kenawy, D.A.R., Mohamed, F., Hebicha, H., Diab, A., Hussein, S., Abou-Zeid, R.M., El-Naggar, G.O.

“…Quantitative data were collected for each link in the value-chain on operational and financial performance (e.g. gross output values, variable and fixed costs, operational and net profit margins, value-added generation), and on employment creation (by gender, age and full-time/part-time). …”
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Husbandry Practices and Productivity of Sheep in Lallo-Mama Mider Woreda of Central Highlands of Ethiopia por Abebe, M.

“…In this woreda, sheep were kept at marginal situations as far as housing, lamb rearing, feeding and feed management and disease control practices were concerned. …”
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Biofortified yellow cassava and vitamin A status of Kenyan children: a randomized controlled trial por Talsma, Elise F., Brouwer, Inge D., Verhoef, H., Mbera, G.N., Nwangi, A.M., Demir, Ayse Y., Maziya-Dixon, B.B., Boy, Erick, Zimmermann, Michael B., Melse-Boonstra, Alida

“…Objective: We assessed the effect of consuming yellow cassava on serum retinol concentration in Kenyan schoolchildren with marginal vitamin A status. Design: We randomly allocated 342 children aged 5–13 y to receive daily, 6 d/wk, for 18.5 wk 1) white cassava and placebo supplement (control group), 2) provitamin A–rich cassava (mean content: 1460 mg b-carotene/d) and placebo supplement (yellow cassava group), and 3) white cassava and b-carotene supplement (1053 mg/d; b-carotene supplement group). …”
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The structure and performance of the delivery systems for tsetse and trypanosomosis control inputs and services in Kenya. por M'Mboyi, F.

“…The extent of market efficiency is then analysed by looking at the market performance indicators in this market viz a viz gross margins per trading level, variable costs, opportunity cost analysis and returns to capital investments per trading level. …”
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