Importance of Conservation Agriculture in Nepal
-
Upload
tikakarki2014 -
Category
Food
-
view
98 -
download
2
description
Transcript of Importance of Conservation Agriculture in Nepal
![Page 1: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/1.jpg)
Weed competition and conservation agriculture for smallholders: Insights from
maize systems in the hills of Nepal
Tika Karki1, Andrew McDonald2 and Adam Davis*3 1Tribhuvan University, Kathmandu; 2CIMMYT, South Asia Regional
Office; 3USDA-ARS Global Change and Photosynthesis Research Unit
![Page 2: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/2.jpg)
Context
![Page 3: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/3.jpg)
![Page 4: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/4.jpg)
![Page 5: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/5.jpg)
![Page 6: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/6.jpg)
Multi-phase study
• Farmer survey (2009):– labor, food security, fertility, cultivars, weeds
• On-farm (2010): – observations of farmer practices vs. BMPs
• On-station (2009-present):– replicated CA cropping system trials
![Page 7: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/7.jpg)
Farmer survey
![Page 8: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/8.jpg)
77 householdsin Myagdi,Baglung andParbat
![Page 9: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/9.jpg)
![Page 10: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/10.jpg)
![Page 11: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/11.jpg)
Finger millet (Eleusine coracana)
![Page 12: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/12.jpg)
Maize
Finger millet
cultivation,followed byfingermilletplanting, 60-90 DAPpre-tasselingin maize
Planting Hand-weeding30 DAP
urea 10-15dbefore millet
![Page 13: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/13.jpg)
![Page 14: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/14.jpg)
![Page 15: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/15.jpg)
On-farm trials
![Page 16: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/16.jpg)
Weed population densityParbat: 688 plants m-2
Baglung: 1244 plants m-2
![Page 17: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/17.jpg)
![Page 18: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/18.jpg)
Gra
in y
ield
(kg
ha-1
)
0.6
0.9
1.2
1.5
Weed free FP Weed free FP
Parbat Baglung
Solid line inside the box indicates median and the dotted mean
Millet
![Page 19: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/19.jpg)
Crop population
Plan
t pop
ulat
ion
(ha
-1)
30000
35000
40000
45000
50000
55000
60000
65000
70000
20 DAE At harvest 20 DAE At harvest
Parbat Baglung
Solid line inside the box indicates median and the dotted mean
Parbat Baglung Myagdi
Th
inn
ing
(d
ays a
fete
r e
me
rgn
ece
)0
10
20
30
40
50
60
70First SecondThird
DistrictsN = 25 N = 23 N = 29
![Page 20: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/20.jpg)
BMP: 52,000 plants +/- 150 ha-1
Farmer: 36,900 +/- 500 plants ha-1
BMP FarmerCrop population (practice)
0
1
2
3
4Y
ield
(M
g/h
a)
Maintaining maize cropat recommended populationdensity resulted in a yieldincrease of over 160%compared to the farmerpractice of heavy thinning.
![Page 21: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/21.jpg)
![Page 22: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/22.jpg)
![Page 23: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/23.jpg)
On-station trial (2009-present)
• Maize-rice crop rotation• Split plot design with full factorial of:
– Tillage (main): no-till, conventional (ox-drawn plow)
– Residue Retention (split): removed, 40 cm– Soil fertility (split-split): farmer practice (FYM),
BMP: FYM + Urea (110 kg N ha-1)
![Page 24: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/24.jpg)
![Page 25: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/25.jpg)
![Page 26: Importance of Conservation Agriculture in Nepal](https://reader038.fdocuments.in/reader038/viewer/2022110117/553a30424a79591b688b4aa3/html5/thumbnails/26.jpg)