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Search: su=agricultural productivity
Found: 224 Record 1-100 Next Last

Periodical articleShita, Aynalem; Kumar, Nand; Singh, Seema (2020)
See this publicationEconomic Benefit of Agricultural Technology on Teff and Maize Crops in Ethiopia: The Blinder-Oaxaca Decomposition
Journal of Poverty. Volume 24 #3. p. 169-184.

Periodical articlePilo, Mikémina (2019)
See this publicationDynamics of Agricultural Productivity and Technical Efficiency in Togo: The Role of Technological Change
African Development Review. Volume 31 #4. p. 462-475.

BookGoyal, Aparajita; Nash, John (2017)
Reaping richer returns: public spending priorities for transforming African agriculture productivity growth
Washington, DC: World Bank. Africa development forum. 322p.

Periodical articleInder, Brett (ed.) (2017)
See this publicationLivelihoods and child welfare among poor rural farmers in East Africa
Abstract presentAfrican Development Review. Volume 29 #2. p. 169-183.

BookNguyen, Nga Thi Viet; Dizon, Felipe F. (2017)
See this publicationThe geography of welfare in Benin, Burkina Faso, Côte d'Ivoire, and Togo
Washington, DC: World Bank. 95p.

Periodical articleCarletto, Calogero; Gourlay, Sydney; Winters, Paul (2015)
See this publicationFrom Guesstimates to GPStimates: land area measurement and implications for agricultural analysis
Abstract presentJournal of African Economies. Volume 24 #5. p. 593-628.

Periodical articleGhebru, Hosaena H.; Holden, Stein T. (2015)
See this publicationReverse-share-tenancy and agricultural efficiency: farm-level evidence from Ethiopia
Abstract presentJournal of African Economies. Volume 24 #1. p. 148-171.

Periodical articleMmari, Donald Eliapenda (2015)
See this publicationThe challenge of intermediary coordination in smallholder sugarcane production in Tanzania
Abstract presentJournal of Modern African Studies. Volume 53 #1. p. 51-68.

Periodical articleAbabte, Ashenafi Assefa (2014)
The impact of trade openness on poverty via agricultural TFP in Ethiopia: a sequential dynamic computable general equilibrium micro simulation analysis
Ethiopian Journal of Economics. Volume 23 #1. p. 1-30.

BookAgbobli, Comlan Atsu Luc (2014)
Et demain l'agriculture togolaise: une analyse critique des maux qui ruinent l'agriculture togolaise du point de vue du chercheur
Paris: L'Harmattan. Études africaines. 110p.

Periodical articleAli, Daniel Ayalew; Deininger, Klaus (2014)
See this publicationCauses and implications of credit rationing in rural Ethiopia: the importance of zonal variation
Abstract presentJournal of African Economies. Volume 23 #4. p. 493-527.

Periodical articleHillbom, Ellen (2014)
See this publicationFrom millet to tomatoes: incremental intensification with high-value crops in contemporary Meru, Tanzania
Abstract presentJournal of Eastern African Studies. Volume 8 #3. p. 400-419.

BookNawe, Julita; Hambati, Herbert (2014)
See this publicationIntegrating traditional and modern knowledge systems in improving agricultural productivity in Upper-Kitete village, Tanzania
Abstract presentDar es Salaam: Research on Poverty Alleviation (REPOA). REPOA research report. 38p.

Periodical articleWeldegebriel, Hagos (2014)
The determinants of technical efficiency of farmers in 'teff', maize and sorghum production: empirical evidence from central zone of Tigray region
Ethiopian Journal of Economics. Volume 23 #2. p. 1-36.

Periodical articleAnyang' Nyong'o, Peter (2013)
See this publicationThe land question, land grabbing and agriculture in Africa
Abstract presentInternational Journal of African Renaissance Studies. Volume 8 #2. p. 23-31.

Periodical issueDury, Sandrine; Janin, Pierre (eds.) (2013)
See this publicationLe sécurisation alimentaire en Afrique = Food security in Africa: enjeux, controverses et modalités
Abstract presentAgricultures. Volume 21 #5. p. 281-382.

Periodical articleIghodaro, Clement Atewe; Nwaogwugwu, Isaac Chii (2013)
Effectiveness of foreign aid on the growth of the agricultural sector in Nigeria
Ethiopian Journal of Economics. Volume 22 #2. p. 131-146.

Periodical issueMawunya, Ferdinand D. (ed.) (2013)
Special issue: Climate change in Ghana: impacts on agriculture and the policy implications
Ghana Policy Journal. Volume 5. 87p.

Periodical articlePallière, Augustin (ed.) (2013)
Marchandisation du travail et différenciation sociale en Sella Limba (Sierra Leone) de 1950 à nos jours
Abstract presentJournal des africanistes. Volume 83 #2. p. 116-141.

Periodical articleBroderick, Cyril E.; Barczewski, Richard; Guseh, James S. (2012)
The provision of technical resources to Liberian farmers to stipulate and increase agricultural output in Liberia
Abstract presentLiberian Studies Journal. Volume 37 #2. p. 116-143.

BookCivil Society Agriculture Network (CISANET), Lilonge (2012)
Rice value chain policy consultation report
Lilonge: Civil Society Agriculture Network (CISANET). 44p.

Periodical articleHoddinott, John (ed.) (2012)
See this publicationThe impact of Ethiopia's Productive Safety Net Programme and related transfers on agricultural productivity
Abstract presentJournal of African Economies. Volume 21 #5. p. 761-786.

Periodical articleNdesanjo, R.; Ngana, J.O.; Yanda, P.Z. (2012)
See this publicationClimate change impact and adaptive strategies in the Rufiji Delta, Tanzania
Abstract presentUtafiti. Volume 9 #1. p. 59-73.

Periodical articleNiboye, Elliott P.; Kabote, Samwel J. (2012)
See this publicationAgricultural transformation and population nexus: some theoretical and empirical lessons for sub-Saharan Africa
Abstract presentUtafiti. Volume 9 #1. p. 111-130.

BookOsberg, Lars; Bandara, Amarakoon (2012)
See this publicationWhy poverty remains high in Tanzania: and what to do about it?
Dar es Salaam: REPOA. REPOA special paper. 34p.

Periodical articleAbegaz, Getachew Ahmed (2011)
See this publicationCereal productivity in Ethiopia: an analysis based on ERSH data
Ethiopian Journal of Economics. Volume 20 #2. p. 1-27.

Periodical articleAkuriba, Margaret Atosina; Asuming-Brempong, Samuel; Mensah Bonsu, Akwasi (2011)
Productivity and competitiveness of sorghum production in Northern Ghana: a policy analysis matrix approach
Ghana Journal of Development Studies. Volume 8 #2. p. 101-116.

Dissertation / thesisBerhe, Araya Alemie (2011)
See this publicationCoping with drought for food security in Tigray, Ethiopia
Wageningen: Wageningen University and Research Centre. Tropical resource management papers #100. 173p.

BookChuhan-Pole, Punam; Angwafo, Manka (eds.) (2011)
Yes Africa can: success stories from a dynamic continent
Abstract presentWashington, DC: World Bank. 477p.

Periodical articleMutekwa, T.; Marambanyika, T.; Matsa, M.; Mapuranga, J. (2011)
Evaluation of the impact of agricultural recovery programmes on communal farming productivity in Mudavanhu ward 12 of Masvingo District, Zimbabwe
OSSREA Bulletin. Volume 8 #1. February. p. 32-38.

Periodical articleNwaru, Jude C.; Ndukwu, Patrick C. (2011)
Estimation of farm level technical efficiency and its determinants among male and female sweet potato farmers in Imo State, Nigeria
Ethiopian Journal of Economics. Volume 20 #1. p. 99-112.

Periodical articleThiandoum, Mariama (2011)
Potentiel de production fruitière et économie villageoise en pays safène
Annales de la Faculté des lettres et sciences humaines. #41. p. 57-74.

Periodical articleWoldetsadik, Muluneh; Hailu, Demeke (2011)
See this publicationClimate change and variability, its impact on rural livelihoods, local coping and adaptation strategies in Woreilu Woreda, North Eastern Ethiopia
Abstract presentEthiopian Journal of Development Research. Volume 33 #1. April. p. 29-59.

BookBeyene Tadesse (ed.) (2010)
Current status of agricultural performance and productivity enhancing mechanisms: proceedings of the 12th annual conference of the Agricultural Economics Society of Ethiopia
Abstract presentAddis Ababa: Agricultural Economics Society of Ethiopia. 271p.

Periodical articleDelamarche, Myrtille (2010)
Dossier agriculture
Marchés tropicaux et méditerranéens. Volume 65 #3250. p. 5-21.

Periodical articleDonkoh, S.A.; Awuni, J.A.; Namara, R. (2010)
See this publicationImproving the efficiency of inland valley rice production in Northern Ghana
Journal of the Ghana Science Association. Volume 12 #2. December. p. 118-132.

BookNjeru, James (2010)
See this publicationFactors influencing technical efficiencies among selected wheat farmers in Uasin Gishu District, Kenya
Abstract presentNairobi: African Economic Research Consortium. AERC research paper #206. 27p.

Periodical articleAmongi, M. (2009)
Enhancing agricultural productivity and livelihood of rural women through information and communication technology
Agricultural Innovations for Sustainable Development. Volume 1 #1. p. 8-13.

Periodical articleDebela, Adane Tuffa (2009)
See this publicationImpact of perennial cash cropping on food crop production and productivity
Ethiopian Journal of Economics. Volume 18 #1. April. p. 1-34.

Periodical articleEpeju, William Faustine (2009)
Farmers' personal characteristics in assuring agricultural productivity: lessons from sweet potato farmers in Teso, Uganda
Abstract presentUganda Journal. Volume 52. December. p. 13-23.

Periodical articleFekadu G.; Bezabih E. (2009)
Analysis of technical efficiency of wheat production: a study in Machakel Woreda, Ethiopia
Ethiopian Journal of Agricultural Economics. Volume 7 #2. May. p. 1-33.

Periodical articleHailu B.; Hassan, R.M. (2009)
The role of learning in adoption of improved wheat varieties in Northern and Western Shewa zones of Ethiopia
Ethiopian Journal of Agricultural Economics. Volume 7 #2. May. p. 35-54.

Periodical articleKiiru, J.M. (2009)
Policy issues for small holder farmers' productivity
Agricultural Innovations for Sustainable Development. Volume 2 #1. p. 123-129.

BookKouassi, B. (ed.) (2009)
Les déterminants de la production agricole en Afrique de l'Ouest: Burkina Faso, Côte d'Ivoire, Ghana et Togo
Abstract presentParis: Karthala. Économie et développement. 176p.

BookKouassi, Bernard Yapo (ed.) (2009)
Innovations technologiques et productions agricoles en Afrique de l'Ouest: exemple du Burkina Faso, du Ghana et du Togo
Abstract presentParis: Karthala. Économie et développement. 431p.

Periodical articleMbodji, D. (2009)
Strategies to improve the productivity of the industrial tomato crops in the Senegal River Valley, 2002-2005
Agricultural Innovations for Sustainable Development. Volume 1 #1. p. 53-58.

Periodical articleMoshia, M.E. (2009)
Waste and environmental management through geospatial information technology for agricultural productivity
Agricultural Innovations for Sustainable Development. Volume 1 #1. p. 21-25.

Periodical articleNamuene, G.N.; Etinge, N.B. (2009)
VAVAN information communication technology (ICT) agricultural sustainable project (VICTASUP)
Agricultural Innovations for Sustainable Development. Volume 1 #1. p. 14-20.

Periodical issueAnonymous (2008)
Pour l'Office du Niger!: mais quel Office du Niger: les communications
Abstract presentLes cahiers de Mande Bukari. #11. 77p.

Periodical articleBabikir, Osman Mohammed; Mohammed, El-Agib Farahain (2008)
A preliminary test of het(e)rogeneity between family and hired labour in Sudanese agriculture: a case study of Gezira scheme
OSSREA Bulletin. Volume 5 #3. p. 28-50.

Periodical articleDa, Constant Évariste Dapola (2008)
Impact des techniques de conservation des eaux et des sols sur le rendement du sorgho au centre-nord du Burkina Faso
Abstract presentLes cahiers d'outre-mer. Volume 61 #241-241. p. 99-110.

Dissertation / thesisEl Majnaoui, Mbarek (2008)
Impact de l'éducation et de la formation sur la productivité des agriculteurs: le cas de la formation par alternance des producteurs de céréales du Maroc
Ann Arbor, MI: UMI Dissertation Services. 279p.

BookHolmberg, Johan (2008)
See this publicationNatural resources in sub-Saharan Africa: assets and vulnerabilities
Uppsala: Nordiska Afrikainstitutet. Current African issues #39. 52p.

Periodical articleMatshe, Innocent (2008)
See this publicationFood security aspects of the impact of HIV/AIDS on rural women in smallholder agriculture
Agenda: Empowering Women for Gender Equity. #78. p. 132-143.

Periodical articlePender, John; Gebremedhin, Berhanu (2008)
See this publicationDeterminants of agricultural and land management practices and impacts on crop production and household income in the highlands of Tigray, Ethiopia
Abstract presentJournal of African Economies. Volume 17 #3. p. 395-450.

Periodical articleTakane, Tsutomu (2008)
See this publicationLabor use in smallholder agriculture in Malawi: six village case studies
African Study Monographs. Volume 29 #4. p. 183-200.

Periodical articleAlimi, Taiwo (2007)
See this publicationA comparative study of the economic performance of farmers under large scale and motorized pump irrigation systems in Katsina State of Nigeria
Abstract presentDiscovery and Innovation. Volume 19 #4. December. p. 28-37.

Periodical articleHaji, Jema (2007)
See this publicationProduction Efficiency of Smallholders' Vegetable-Dominated Mixed Farming System in Eastern Ethiopia: A Non-Parametric Approach
Abstract presentJournal of African Economies. Volume 16 #1. January. p. 1-27.

Periodical articleMugwe, J.; Mugendi, D.; Kungu, J.; Mucheru-Muna, M. (2007)
See this publicationEffect of plant biomass, manure and inorganic fertiliser on maize yield in the Central highlands of Kenya
African Crop Science Journal. Volume 15 #3. September. p. 111-126.

Periodical articleMuturi, S.M.; Wawire, N.W.; Amolo, R.A. (2007)
Effect of irrigation on sugarcane productivity and profitability: a case study of Chemelil Sugar Company
Technical Bulletin (Kenya Sugar Research Foundation). Volume 1 #2. April. p. 38-53.

Periodical articleNarteh, L.T.; Moussa, M.; Otoo, E.; Andah, W.E.I.; Asubonteng, K.O. (2007)
See this publicationEvaluating inland valley agro-ecosystems in Ghana using a multi-scale characterization approach
Ghana Journal of Agricultural Science. Volume 40 #2. p. 141-157.

BookNgailo, Jerry A.; Kaswamila, Abiud L.; Senkoro, Catherine J. (2007)
See this publicationRice production in the Maswa district, Tanzania and its contribution to poverty alleviation
Dar es Salaam: REPOA. REPOA research report #7. 48p.

Periodical articleOmbati, J.M.; Ngesa, F.U.; Githeko, J.M. (2007)
Initiatives to revitalize public agricultural extension services in Kenya: a critical review of literature and theoretical framework
Journal of Education and Human Resources. Volume 4 #1. January. p. 95-112.

Periodical articleWawire, N.W.; Nyongesa, D.P.; Kipruto, K.B. (2007)
The effect of continuous land subdivision on cane production in Kenya
Technical Bulletin (Kenya Sugar Research Foundation). Volume 1 #2. April. p. 54-71.

Periodical articleWeir, Sharada; Knight, John (2007)
See this publicationProduction Externalities of Education: Evidence from Rural Ethiopia
Abstract presentJournal of African Economies. Volume 16 #1. January. p. 134-165.

Periodical articleAli-Olubandwa, A.M.; Kathuri, N.J.; Wesonga, T.E.O. (2006)
women groups: an extension channel for improving agricultural production in Kakamega District, Kenya
Egerton Journal of Humanities, Social Sciences and Education. Volume 6 #2-3. p. 177-193.

Periodical articleAmolo, R.A.; Abayo, G.O.; Muturi, S.M.; Rono, J.K.; Nzioki, H.S.; Ochola, P.N. (2006)
The influence of planting and harvesting time on sugarcane productivity in Kenya
Technical Bulletin (Kenya Sugar Research Foundation). #1. December. p. 20-25.

Periodical articleClottey, V.A.; Bayorbor, T.B.; Chamba, E.B.; Salifu, A.B.; Afful, S. (2006)
Productivity of cotton-cowpea relay intercrops in Northern Ghana
Journal of the Ghana Science Association. Volume 8 #2. p. 46-52.

Periodical articleDhehibi, Boubaker; Lachaal, Lassaad (2006)
See this publicationEmpirical Evidence of Productivity Growth in Tunisian Agriculture: 1961-2000
African Development Review. Volume 18 #2. September. p. 248-257.

Periodical articleFufa, Bekabil; Hassan, Rashid M. (2006)
See this publicationIncome Risk and Crop Production Patterns of Small-Scale Farmers in Eastern Oromiya Region of Ethiopia
Abstract presentEastern Africa Social Science Research Review. Volume 22 #1. January. p. 87-101.

Periodical articleGirma A. (2006)
Analysis of instability in cereal production of Ethiopia: the case of Oromiya Region
Ethiopian Journal of Agricultural Economics. Volume 6 #1. April. p. 49-72.

Periodical articleJouve, Philippe (2006)
Transition agraire: la croissance démographique, une opportunité ou une contrainte?
Abstract presentAfrique contemporaine. #217. p. 43-54.

Periodical articleKabirizi, J.; Mpairwe, D.; Mutetikka, D. (2006)
Improving dairy cattle productivity in smallholder farms in Uganda: incorporating leguminous forages in farming systems
Uganda Journal of Agricultural Sciences. Volume 12 #1. June. p. 1-12.

Periodical articleMuturi, S.M.; Wawire, N.W. (2006)
Effect of irrigation on sugarcane productivity in Nyando sugar zone
Technical Bulletin (Kenya Sugar Research Foundation). #1. December. p. 10-19.

Periodical articleNjau, P.N.; Kimurto, P.K.; Kinyua, M.G.; Okwaro, H.K.; Ogolla, J.B.O. (2006)
Wheat productivity improvement in the drought prone areas of Kenya
African Crop Science Journal. Volume 14 #1. March. p. 49-57.

Periodical articleOwuor, G.; Mukoya-Wangia, S.M.; Onyuma, S.O.; Mshenga, P.M.; Gamba, P. (2006)
Self-help groups as a social capital for agricultural productivity: the case of smallholder maize farmers in Siaya, Kenya
Egerton Journal of Humanities, Social Sciences and Education. Volume 6 #2-3. p. 159-176.

Periodical articleOywaya-Nkurumwa, A.M.; Kathuri, N.J. (2006)
Socio-economic factors that influence women farmers' participation in agricultural extension programmes in Mulala Division of Makueni District, Kenya
Egerton Journal of Humanities, Social Sciences and Education. Volume 6 #2-3. p. 194-213.

Periodical articlePender, John; Fafchamps, Marcel (2006)
See this publicationLand Lease Markets and Agricultural Efficiency in Ethiopia
Abstract presentJournal of African Economies. Volume 15 #2. p. 251-284.

Periodical articleTessema C.A. (2006)
HIV/AIDS: vulnerability to coffee production in Ethiopia
Economic Focus (Addis Ababa, Ethiopia). Volume 9 #3. November. p. 32-39.

Periodical articleWawire, N.W.; Jamoza, J.E.; Shiundu, R.; Kipruto, K.B.; Chepkwony, P. (2006)
Identification and ranking of zonal sugarcane production constraints in the Kenya sugar industry
Technical Bulletin (Kenya Sugar Research Foundation). #1. December. p. 78-102.

Periodical articleAzzam, Azzeddine; Sekkat, Khalid (2005)
See this publicationMeasuring Total-Factor Agricultural Productivity under Drought Conditions: The Case of Morocco
The Journal of North African Studies. Volume 10 #1. March. p. 19-31.

Periodical articleBaye B.; Ravishankar, R.; Singh, H. (2005)
Variability and association of tuber yield and related traits in potato (Solanum tuberosum L.)
Ethiopian Journal of Agricultural Sciences. Volume 18 #1. June. p. 103-121.

Periodical articleBenin, Samuel; Ahmed, Mohamed; Pender, John; Ehui, Simeon (2005)
See this publicationDevelopment of Land Rental Markets and Agricultural Productivity Growth: The Case of Northern Ethiopia
Abstract presentJournal of African Economies. Volume 14 #1. March. p. 21-54.

Periodical articleBoadi, R.; Nang'ayo, F.; Mignouna, H.; Omanya, G.; Muchiri, N.; Bokanga, M. (2005)
Increasing agricultural productivity in Africa through the use of intellectual property rights
African Crop Science Conference Proceedings. Volume 7 #pt. 2 of 3. 5-9 Dec.. p. 813-816.

Periodical articleEboh, E.C.; Okeibunor, J.C. (2005)
Malaria prevalence and impact on farm household labor use and productivity in the irrigated rice production system of Omor community, Nigeria
Tanzania Health Research Bulletin. Volume 7 #1. January. p. 7-15.

Periodical articleEdriss, A. (2005)
Gender differential in groundnut productivity in Sub-Saharan Africa: the case of Lilongwe and Salima adds in central Malawi
Bunda Journal of Agriculture, Environmental Science and Technology. Volume 3 #1. October. p. 29-37.

Periodical articleEngida M. (2005)
Agro-climatic determination of the growing season over Ethiopia
Ethiopian Journal of Agricultural Sciences. Volume 18 #1. June. p. 13-27.

Periodical articleErgano, Kebebe; Beyene, Sheleme; Wallelu, Wondimu (2005)
See this publicationLearning experiences of Farmers Field School on Integrated Nutrient Management: evidence from Wolaita in southern Ethiopia: a research report
Abstract presentEthiopian Journal of the Social Sciences and Humanities. Volume 3 #2. December. p. 81-93.

Periodical articleFiscian, P.; Kwapong, P.K.; Tetteh, J.P. (2005)
Agronomic methods practiced by sweet potato farmers in the central and western regions of Ghana and implications on yield and profitability
Journal of the Ghana Science Association. Volume 7 #1. p. 26-30.

Periodical articleGetachew E. (2005)
Condition and productivity of the native grasslands in the Central Highlands of Ethiopia
Ethiopian Journal of Agricultural Sciences. Volume 18 #1. June. p. 89-101.

Periodical articleKagonda, F.; Rubaihayo, P.R.; Tenywa, M.M. (2005)
See this publicationThe potential of cultural and chemical control practices for enhancing productivity of banana ratoons
African Crop Science Journal. Volume 13 #1. March. p. 71-81.

Periodical articleMakgala, C.J. (2005)
Botswana's NAMPAADD in historical perspective, 1939-2005
Pula: Botswana Journal of African Studies. Volume 19 #2. p. 118-128.

Periodical articleMesfin H. (2005)
See this publicationThe impact of credit repayment schedule policy on competitiveness of grain production in Welmera District, Ethiopia
Ethiopian Journal of Economics. Volume 14 #1. April. p. 49-78.

Periodical articleMloza-Banda, H.R. (2005)
Integrating new trends in farming systems approaches in Malawi
African Crop Science Conference Proceedings. Volume 7 #pt. 2 of 3. 5-9 Dec.. p. 961-966.

Dissertation / thesisMulumba, Lukman Nagaya (2005)
Land use effects on soil quality and productivity in the Lake Victoria basin of Uganda
Ann Arbor, MI: UMI. 166p.

Periodical articleMusiime, O.; Tenywa, M.M.; Majaliwa, M.J.G.; Lufafa, A.; Nanfumba, D.; Wasige, J.E.; Woomer, P.L.; Kyondha, M. (2005)
Constraints to rice production in Bugiri district
African Crop Science Conference Proceedings. Volume 7 #pt. 03 of 03. December. p. 1495-1499.

Periodical articleNakyagaba, N.W.; Ssekabembe, C.K.; Osiru, D.S.O. (2005)
An overview of the agronomic constraints to simsim production in Uganda
African Crop Science Conference Proceedings. Volume 7 #pt. 03 of 03. December. p. 1221-1228.

Periodical articleTolera A.; Dhaba F. (2005)
Effect of seed rate and weed control on agronomic performance of faba bean (vicia faba L)
Arem. Volume 6. p. 85-91.

Periodical articleAlleman, J.; Dugmore, N. (2004)
See this publicationPotential for cassava production in the Bathurst region of the eastern Cape Province of South Africa
African Crop Science Journal. Volume 12 #3. September. p. 275-281.

Periodical articleByarugaba, D.K. (2004)
Harnessing microbial resources for increased agricultural productivity and improved livelihoods
Uganda Journal of Agricultural Sciences. Volume 9 #1, pt. 1. September. p. 227-234.

Search: su=agricultural productivity
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