Presentation is loading. Please wait.

Presentation is loading. Please wait.

Effect of Watershed (ACN) and Fertilizer Management on Soil Organic Carbon (SOC) Conservation in Maize-based cropping systems in The Gambia.

Published byGerald Simon Modified over 8 years ago

Similar presentations

Presentation on theme: "Effect of Watershed (ACN) and Fertilizer Management on Soil Organic Carbon (SOC) Conservation in Maize-based cropping systems in The Gambia."— Presentation transcript:

1 Effect of Watershed (ACN) and Fertilizer Management on Soil Organic Carbon (SOC) Conservation in Maize-based cropping systems in The Gambia.

2 A.K. Jarju*, M. Faye, C. Bojang, M. Suso, Y. Sanneh, B. Jobe, A. Bittaye, F atajo National Agriculture Research Institute (NARI), PMB 526, Serekunda, The Gambia and C. Yamoah, R. Kablan, R. S.Yost* SM-CRSP Carbon Project, University of Hawaii Department of Plant and Soil Science, University of Hawaii, Honolulu, USA RESEARCH TEAM

3 Introduction A watershed management experiment was initiated in the Gambia from 2002 to 2006 to test the hypothesis that ridge tillage retains rainfall and interacts with fertilizer to produce greater maize grain and biomass yields than conventional watershed management. A watershed management experiment was initiated in the Gambia from 2002 to 2006 to test the hypothesis that ridge tillage retains rainfall and interacts with fertilizer to produce greater maize grain and biomass yields than conventional watershed management.

4 Objective To evaluate existing and improved cropping systems for increased Carbon storage as soil Carbon and sustainable increased crop production. To evaluate existing and improved cropping systems for increased Carbon storage as soil Carbon and sustainable increased crop production.

5 Methodology A split plot design with three replications was used for the experiment. The main plots were ridge-tillage and conventional tillage watershed management. Subplots were four fertilizer rates A split plot design with three replications was used for the experiment. The main plots were ridge-tillage and conventional tillage watershed management. Subplots were four fertilizer rates

6 Methodology Treatments: Main plots 1. Ridge-tillage 1. Ridge-tillage 2. Conventional tillage 2. Conventional tillage

7 Methodology Sub-plots 1. check with no fertilizer 1. check with no fertilizer 2. 200 kg ha -1 NPK fertilizer + 16 kg ha -1 of urea (approximately half the national recommended rate) 2. 200 kg ha -1 NPK fertilizer + 16 kg ha -1 of urea (approximately half the national recommended rate) 3. 200 kg ha -1 NPK fertilizer + 43 kg ha -1 of urea (full the national recommended rate) 3. 200 kg ha -1 NPK fertilizer + 43 kg ha -1 of urea (full the national recommended rate) 4. 200 kg ha -1 NPK fertilizer + 150 kg ha -1 of urea (double the national recommended rate.) 4. 200 kg ha -1 NPK fertilizer + 150 kg ha -1 of urea (double the national recommended rate.)

8 ACN Field layout Ridge tillage Conv. Tillage Ridge tillage Conv. Tillage F1

9 Determination of soil carbon The widely recognized method to estimate soil carbon in cropping systems for assessment of carbon sequestration is the dry-combustion procedure (SM-CRSP, 2002). The widely recognized method to estimate soil carbon in cropping systems for assessment of carbon sequestration is the dry-combustion procedure (SM-CRSP, 2002).

10 Determination of soil carbon For the Gambian upland soils, 5g-soil is pre- dried to 105 C and later to 360 C. The product of percent LOI at 360 C and 0.717 give %OM. For the Gambian upland soils, 5g-soil is pre- dried to 105 C and later to 360 C. The product of percent LOI at 360 C and 0.717 give %OM. Conversion of %OM to %OC is %OM/1.724 or simply 2. Conversion of %OM to %OC is %OM/1.724 or simply 2.

11 Effects of ridge tillage, conventional tillage systems, and fertilizer on maize yields (kg ha -1 ), Two year pull 2005 and 2006 in Western Gambia. FertilizerTillage systems 20052006 RT*CTRTCT (kg ha -1 ) (Yield kg ha -1 ) Check (no fertilizer) 431530 632586 200 NPK + 42 urea11531052 24222134 200 NPK + 86 urea1136941 22261702 200 NPK + 258 urea 11051193 21341842 Analysis of variance SourceF-valueP-valueF-valueP-value Tillage system (T) 0.150>0.05 31.290.030 Fertilizer (F) 51.70<0.001 280.867<0.001 T*F2.80<0.056.5880.007

12 Effects of ridge tillage, conventional tillage systems, and fertilizer on total soil carbon (t/ha) in 2005 and % carbon (%) in 2005, Western Gambia. Fertilizer Tillage systems 2005 RT*CTRTCT (kg ha -1 ) Total soil carbon (t/ha ) (%Carbon) Check (no fertilizer) 8.737.91 0.720.63 200 NPK + 42 urea 8.907.83 1.260.95 200 NPK + 86 urea 9.967.70 1.121.02 200 NPK + 258 urea 10.058.61 1.100.98 Analysis of variance SourceF-valueP-valueF-valueP-value Tillage system (T) 4.44>0.05 43.520.022 Fertilizer (F) 3.34<0.05 54.49<0.001 T*F1.4>0.057.470.004

13 Descriptive statistics of soil carbon in ridge and conventional tillage systems, 2005. StatisticRidge-tillageConventional tillage Mean0.870.73 Median0.900.79 Standard deviation0.170.11 Minimum0.570.53 Maximum1.090.88 Range0.520.35 CV (%)19.215.0

14 Returns over variable cost of fertilizer on maize in ridge and conventional tillage systems in Western Gambia 2005 and 2006. FertilizerTillage systems 20052006 RT*CTRTCT (kg ha -1 ) (Dalasis ha -1 ) Check (no fertilizer) 2115260027282508 200 NPK + 42 urea3680300098207312 200 NPK + 86 urea3420254075205234 200 NPK + 258 urea 2814250059224646 Statistics Mean2814263864574925 Standard deviation85825029791925 CV0.310.090.4580.401 Paired t-testP>0.05 P<0.057

15 Plans for 2007 Work with both the national extension staff and international NGOs to train farmers in the installation of the ADOs and to intensify the replicate ACN on farm program and farmer-to-farmer field visits. Work with both the national extension staff and international NGOs to train farmers in the installation of the ADOs and to intensify the replicate ACN on farm program and farmer-to-farmer field visits.

16 Hypothesis e Suggests up to a 40% improvement in crop yields can be achieved with increased carbon storage Generic evidence to date suggest

17 Scaling up realized benefits of ACN on farmers field Replicated on farm ACN technology 2007/2008 Replicated on farm ACN technology 2007/2008 Determination post rain vegetable production in ACN water shed sites in western and north bank region 2008 and beyond Determination post rain vegetable production in ACN water shed sites in western and north bank region 2008 and beyond

18 Conventional Tillage Ridge ttillage Road from Madina sering MassRoad in middle of the Village Fass Chaw Village Mosque Road to Kerr Cherino Road beranch toward Kerr cherino Conventional Tillage

19 The basket - Gambia experience FARMER INNOVATION AND ACN FARMER INNOVATION AND ACN CROSS BOARDER FACTOR CROSS BOARDER FACTOR FIVE YEARS OF EXPERIMENTATION AND CROP RESIDUE MANAGEMENT IMPACT ON CROP YIELD FERTILIZER FREE PLOTS FIVE YEARS OF EXPERIMENTATION AND CROP RESIDUE MANAGEMENT IMPACT ON CROP YIELD FERTILIZER FREE PLOTS

20 F1: 21 days after planting 2003

21 F1: 21 days after planting 2005

22 F1: 21 days after planting 2006

23 On farm discussions for adoption and options “ ridging vs no ridging” in ACN

24 Reflections

25 Successful research is backed by a committed work force at community level

26

Download ppt "Effect of Watershed (ACN) and Fertilizer Management on Soil Organic Carbon (SOC) Conservation in Maize-based cropping systems in The Gambia."

Similar presentations

Best-fit residue allocation: a gate for legume intensification in nitrogen constrained cropping systems of Central Mozambique Nhantumbo, N., Dias, J, Mortlock,

Best-fit residue allocation: a gate for legume intensification in nitrogen constrained cropping systems of Central Mozambique Nhantumbo, N., Dias, J, Mortlock,
Managing maize-based cropping systems to increase soil carbon in northern Ghana J.B. Naab 1, J.W. Jones 2, J. Koo 2, and K.J. Boote 3 1 Savanna Agricultural.

Managing maize-based cropping systems to increase soil carbon in northern Ghana J.B. Naab 1, J.W. Jones 2, J. Koo 2, and K.J. Boote 3 1 Savanna Agricultural.
Simulating Cropping Systems in the Guinea Savanna Zone of Northern Ghana with DSSAT-CENTURY J. B. Naab 1, Jawoo Koo 2, J.W. Jones 2, and K. J. Boote 2,

Simulating Cropping Systems in the Guinea Savanna Zone of Northern Ghana with DSSAT-CENTURY J. B. Naab 1, Jawoo Koo 2, J.W. Jones 2, and K. J. Boote 2,
Bongani Ncube, Manuel Magombeyi, Walter Mupangwa, Paiva Manguambe, David Love.

Bongani Ncube, Manuel Magombeyi, Walter Mupangwa, Paiva Manguambe, David Love.
Economic Potential for Soil Carbon Sequestration in the Nioro Region of Senegal’s Peanut Basin by John Antle, Bocar Diagana, Jetse Stoorvogel and Kara.

Economic Potential for Soil Carbon Sequestration in the Nioro Region of Senegal’s Peanut Basin by John Antle, Bocar Diagana, Jetse Stoorvogel and Kara.
Effect of Long-term Cattle Manure Application on Soil Test Phosphorus, Organic Carbon and Winter Wheat Grain Yield Natasha Macnack, Peter Omara, Lawrence.

Effect of Long-term Cattle Manure Application on Soil Test Phosphorus, Organic Carbon and Winter Wheat Grain Yield Natasha Macnack, Peter Omara, Lawrence.
INTRODUCTION Figure 1: Seedling germination success by planting technique plus rainfall amount and date at the Poolesville location during fall 2007. BC.

INTRODUCTION Figure 1: Seedling germination success by planting technique plus rainfall amount and date at the Poolesville location during fall BC.
By Dr. Thongchai Tangpremsri by Dr. Thongchai Tangpremsri Thailand Country Report on Conservation Agriculture.

By Dr. Thongchai Tangpremsri by Dr. Thongchai Tangpremsri Thailand Country Report on Conservation Agriculture.
By Kudzai F. Ndidzano Limpopo Basin Development Challenge (LBDC)

By Kudzai F. Ndidzano Limpopo Basin Development Challenge (LBDC)
W. McNair Bostick, Oumarou Badini, James W. Jones, Russell S. Yost, Claudio O. Stockle, and Amadou Kodio Ensemble Kalman Filter Estimation of Soil Carbon.

W. McNair Bostick, Oumarou Badini, James W. Jones, Russell S. Yost, Claudio O. Stockle, and Amadou Kodio Ensemble Kalman Filter Estimation of Soil Carbon.
PEARL MILLET’S ROOT LENGTHS AND YIELDS UNDER CONVENTIONAL AND CONSERVATION TILLAGE METHODS IN OGONGO, NAMIBIA. Mudamburi B, Ogunmokun A & Kachigunda B.

PEARL MILLET’S ROOT LENGTHS AND YIELDS UNDER CONVENTIONAL AND CONSERVATION TILLAGE METHODS IN OGONGO, NAMIBIA. Mudamburi B, Ogunmokun A & Kachigunda B.
Increasing productivity and resilience Messages and project examples.

Increasing productivity and resilience Messages and project examples.
Cost-Benefit Analysis of Pipes and Risers Irrigation System in Northern Victoria, Australia Asia Climate Change Adaptation Project First Training in Economics.

Cost-Benefit Analysis of Pipes and Risers Irrigation System in Northern Victoria, Australia Asia Climate Change Adaptation Project First Training in Economics.
Capturing Water for Food And Carbon Sequestration.

Capturing Water for Food And Carbon Sequestration.
April, 2014 Diga Integrated Termite Management in degraded crop land in Diga district, Ethiopia.

April, 2014 Diga Integrated Termite Management in degraded crop land in Diga district, Ethiopia.
Soil Management and Crop Biomass Removal Impacts on Soil Organic Matter Content Krisztina Eleki, Richard M. Cruse, László Fodor, Lajos Szabó, and Sándor.

Soil Management and Crop Biomass Removal Impacts on Soil Organic Matter Content Krisztina Eleki, Richard M. Cruse, László Fodor, Lajos Szabó, and Sándor.
Nourishing the Planet Worldwatch Institute Project on Hunger and Poverty Alleviation Danielle Nierenberg Senior Researcher, Worldwatch Institute

Nourishing the Planet Worldwatch Institute Project on Hunger and Poverty Alleviation Danielle Nierenberg Senior Researcher, Worldwatch Institute
Joachim Ibeziako Ezeji Rural Africa Water Development Project (RAWDP)

Joachim Ibeziako Ezeji Rural Africa Water Development Project (RAWDP)
Subtitle, Date, Presenter Optimizing intensified Runoff from Roads for Supplemental Irrigation, Tigray Region,Ethiopia March,13/ 2014 By:Meseret Dawit.

Subtitle, Date, Presenter Optimizing intensified Runoff from Roads for Supplemental Irrigation, Tigray Region,Ethiopia March,13/ 2014 By:Meseret Dawit.
Residue Biomass Removal and Potential Impact on Production and Environmental Quality Mahdi Al-Kaisi, Associate Professor Jose Guzman, Research Assistant.

Residue Biomass Removal and Potential Impact on Production and Environmental Quality Mahdi Al-Kaisi, Associate Professor Jose Guzman, Research Assistant.

Similar presentations

Ads by Google