@incollection{, B7536333DB838A4F4569B2042C23EE84 , author={{Dr.Ekpo} and {Akwa Ibom State University, Uyo, Akwa Ibom Sate.}}, journal={{Global Journal of Human Social Sciences}}, journal={{GJHSS}}2249-460X0975-587X10.34257/GJHSS, address={Cambridge, United States}, publisher={Global Journals Organisation}12112736 } @incollection{b0, , title={{Weeds in human affairs in sub-Saharan Africa: implications for sustainable food production}} , author={{ OAkobundu }} , journal={{Weed Technology}} 5 , year={1991} } @incollection{b1, , title={{Integrated weed management techniques to reduce soil degradation}} , author={{ OAkobundu }} , journal={{IITA Research}} 6 , year={1993} } @incollection{b2, , title={{Environmental extension as effective tool for sustainable natural resource use}} , author={{ NAkpan }} , journal={{Journal of Environmental Extension}} 1 2 , year={2000} } @incollection{b3, , title={{Facilitating the wider useof agroforestry for development in Southern Africa}} , author={{ AAsare }} , journal={{Development in Practice}} 11 , year={2000} } @incollection{b4, , title={{Assessing the economic viability of flower seed production under poplar trees}} , author={{ SKChauhan } and { RaniSKumar } and { R }} , journal={{Asia-Pacific Agroforestry News}} 37 , year={2010a} } @incollection{b5, , title={{Accounting poplar and wheat productivity for carbon sequestration agri-silvicultural system}} , author={{ SKChauhan } and { SCSharma } and { RChauhan } and { NGupta } and { Ritu }} , journal={{Ind. For}} 136 9 , year={2010b} } @incollection{b6, , title={{Biomass and carbon sequestration potential of poplar-wheat intercropping system in irrigated ago-ecosystem in India}} , author={{ SKChauhan } and { NGupta } and { RWalia } and { SYadav } and { RChauhan } and { PSMangat }} , journal={{J. Agri. Sci. & Tech. A}} 1 4 , year={2011} } @incollection{b7, , title={{Physiology and yield of turmeric under poplar canopy}} , author={{ WSDhillon } and { SKChauhan } and { NSingh }} , journal={{Asia-Pacific Agroforestry News}} 35 , year={2009} } @incollection{b8, , title={{Micro-envoriment and physiology of turmeric cultivated under poplar tree canopy}} , author={{ WSDhillon } and { HVSrinidhi } and { SKChauhan } and { CSingh } and { NSingh } and { NJabeen }} , journal={{Ind. J. Agrof}} 12 2 , year={2010} } @incollection{b9, , title={{Potential of agroforestry as a land use option in Punjab}} , author={{ ASDogra } and { AUpadhayay } and { SCSharma } and { SKChauhan }} , journal={{India. Ind. 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Agri. and Biol}} 8 6 , year={2006} } @incollection{b16, , title={{Biomass production potential of three short rotation woody crop species under varying nitrogen and water availability}} , author={{ HendersonDe } and { JoseS }} , journal={{Agrof. Systems}} 80 , year={2010} } @incollection{b17, , title={{First annual report of Impala Project, covering the period}} , author={{ Impala }} , journal={{ICRAF}} , year={2001. october 2000-December 2001} } @incollection{b18, , title={{Climate change 2001: impacts, adaptation, and vulnerability}} , booktitle={{Contribution of Working Group II to the third Assessment Report of the Intergovernmental Panel on Climate Change}} Cambridge , publisher={Cambridge University Press} , year={2001} , note={Intergovernmental Panel on Climate Change} } @book{b19, , title={{Climate change 2007: impacts, adaptation and vulnerability. Contribution of Working Group}} , year={2007} , note={IPCC] Intergovernmental Panel on Climate Change. II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change} } @incollection{b20, , title={{Agroforestry: the new old paradigm for Asian food security}} , author={{ BMKumar }} , journal={{J Tropical Agriculture}} 44 , year={2006} } @incollection{b21, , title={{Building on traditional gardening to improve household food security}} , author={{ RMarsh }} , journal={{Nutrition and Agriculture}} 22 , year={1998} , note={Food and Agriculture Organization} } @incollection{b22, , title={{Microclimate in agroforestry systems in central Amazonia:does canopy closure matter to soil organisms?}} , author={{ CMartius } and { HHofer } and { MvbGarcia } and { JRombke } and { ForsterBHanagarth } and { W }} , journal={{Agrof. Systems}} 60 , year={2004} } @book{b23, , title={{Agroforestry practices and sustainable livelihoods for the poor. Rural Development Institute}} , author={{ RMitchell } and { THanstad }} , year={2004} , address={U.S.A} } @incollection{b24, , title={{Executive Summary of Five Multi-Sector Surveys on Nigeria"s Vulnerability and Adaptation to Climate Change}} , journal={{Canada}} , year={2004} Nigerian Environmental Study-/-Action Team (NEST) , note={Nigeria-/-Global Change Strategies International (GCSI)} } @book{b25, , title={{Some viable technologies for improved yield in home gardens in South-eastern Nigeria . Proceedings of the 27 th Annual Conference of the Forestry Association of Nigeria, held in Abuja}} , author={{ AOkeke }} , year={1999} , publisher={Hedimo Litho Press} 61 , address={Ibadan, Nigeria; Nigeria} Agricultural and Rural Management Training Institute Ilorin. Kwara State , note={management by the Nigerian farmers. 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Discussion paper 27 International Food Policy institute}} , author={{ SScherer }} , year={1999} , address={Washington D.C} } @book{b29, , title={{Agricultural Extension: A Reference Manual. 2 nd}} , author={{ JSeeperad } and { Henderson T H }} , editor={Swason, B. E.} , year={1984} , note={Evaluating Extension Programmes} } @book{b30, , title={{Approaches to on-farm test and Nevaluation of agroforestry techniques. Working Paper No. 67}} , author={{ K DShepherd } and { J HRoger }} , year={1991} 421 } @incollection{b31, , title={{Agroforestry for alkaline soil}} , author={{ HSSingh }} , journal={{Agroforestry Today}} 3 , year={2001} } @incollection{b32, , title={{Agroforestry and soil fertility. the eleventh hypothesis. shade}} , author={{ HSmith }} , booktitle={{Agroforstry Today}} , year={2004} 2 } @book{b33, , title={{Principles and procedures of statistics: a biometric approach}} , author={{ P GSteel } and { Torrie J H }} , year={1980} , publisher={Mc-Graw Hill Book Co} , address={New York, USA} , note={Second Edition} } @incollection{b34, , title={{Use of Melia volkensii in a semi-arid agroforestry system in Kenya}} , author={{ MStewart } and { TBlomley }} , journal={{Commonwealth Forestry Review}} 73 , year={1994} } @book{b35, , title={{Contribution of trees to soil carbon sequestration under agroforestry systems in the west African sahil}} , author={{ ATakimoto } and { VDNair } and { PkrNair }} , year={2009} } @incollection{b36, , title={{}} , journal={{Agrof. Systems}} 76 } @incollection{b37, , title={{Importance of local knowledge in forest resources conservation}} , author={{ SUdofia }} , booktitle={{Forestry for Sustainable Environment}} Uyo, Nigeria , year={2010} , note={udo} } @incollection{b38, , title={{Facilitating the wider use of agroforestry for development in India}} , author={{ THYadav } and { GMSmith } and { WardenKl } and { YTPeter }} , journal={{Development in Practice}} 11 , year={2011} } @book{b39, , title={{Agroforestry for soil conservation. CAB international}} , author={{ UKYoung A ; Waillingford }} , year={1989} 27 } @book{b40, , title={{Strategies in research on improved farming systems to facilitate adoption and}} , author={{ BOkigbo }} , year={1990} }