Participatory evaluation of groundnut planting methods for pre-harvest aflatoxin management in Eastern Province of Zambia

被引:8
作者
Mukanga, Mweshi [1 ]
Matumba, Limbikani [2 ]
Makwenda, Beatrice [3 ]
Alfred, Sharon [4 ]
Sakala, Whytson [5 ]
Kanenga, Kennedy [6 ]
Chancellor, Tim [7 ]
Mugabe, Jonas [8 ]
Bennett, Ben [7 ]
机构
[1] Zambia Agr Res Inst, Mt Makulu Cent Res Stn, Private Bag 7, Chilanga, Zambia
[2] Univ Lilongwe Agr & Nat Resources, NRC Campus,POB 143, Lilongwe, Malawi
[3] Natl Small Scale Farmer Assoc Malawi NASFAM, City Ctr, POB 30716, Lilongwe 3, Malawi
[4] FANRPAN, 141 Cresswell St,Weavind Pk, ZA-0184 Pretoria, South Africa
[5] Farmers Out Grower Fdn Ltd, Katopola Area, Off Airport Rd, Chipata, Zambia
[6] Zambia Agr Res Inst, Msekera Reg Res Stn, POB 510089, Chipata, Zambia
[7] Greenwich Univ, Old Royal Naval Coll, Nat Resources Inst, Pk Row, London SE10 9LS, England
[8] FARA, 12 Anmeda St,Roman Ridge PMB CT 173, Accra, Ghana
来源
CAHIERS AGRICULTURES | 2019年 / 28卷
关键词
aflatoxin; groundnuts; pod yield; participatory approach; pre-harvest; POSTHARVEST MANAGEMENT; PEANUTS;
D O I
10.1051/cagri/2019002
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
Aflatoxin contamination remains a major challenge for smallholder groundnut producers in Southern Africa. This is compounded by the stringent aflatoxin regulatory regimes in the lucrative international markets that continue to deny groundnuts produced in this region the access to markets. Participatory on-farm experiments were carried in 2016 and 2017 in Chinkhombe (Katete) and Kalichero (Chipata), and on-station trials at Mount Makulu Central Research Station (Chilanga) to evaluate the efficacy of groundnut planting methods: planting in double rows, single rows, tied ridges and on flatbeds, for pre-harvest aflatoxin management. Planting on flatbeds (no ridges), a popular planting method in most parts of Zambia was designated as the baseline. Significantly low (p < 0.05) levels of aflatoxin, (10.3 +/- 3.1 mu g/kg) were recorded in the groundnuts planted on tied ridges, and less than 22% of these had aflatoxin levels above the Zambia regulatory limit of 10 mu g/kg, compared to more than 40% in other methods. Except for double rows, significantly higher pod yield, 1193 kg/ha, was recorded in groundnuts planted on tied ridges compared to other pre-harvest management options. A reduction of 37 and 81% in aflatoxin contamination was observed in groundnuts planted on single rows and tied ridges, respectively compared to an increase of 39.2% in double rows above 54.3 +/- 10.9 mu g/kg recorded in flatbeds. In addition, tied ridging was observed to improve plant vigour, lower disease incidence, insect pest and weed infestation. It is clear that the evaluation of these practices on-farm enabled more farmers to be more aware of the effects of these methods and get motivated to adopt them. It is thus imperative that participatory on-farm evaluations of existing aflatoxin management options are carried out as they are an essential step in influencing adoption and uptake of preharvest management control methods among smallholder farmers.
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页数:10
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