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Data on long-term effects of tillage, phosphorus fertilization and crop rotation on pearl millet–cowpea productivity in the West-African Sahel

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Title Data on long-term effects of tillage, phosphorus fertilization and crop rotation on pearl millet–cowpea productivity in the West-African Sahel
 
Identifier https://doi.org/10.21421/D2/AVKD0T
 
Creator Vincent Bado
Dougbedji Fatondji
Maman Laminou Sanoussi Manzo
Prakash Gangashetty
 
Publisher ICRISAT Dataverse
 
Description The experiment was established in 1986 and continued until 2018 at the ICRISAT Sahelian Center (ISC), located at Sadore, 45 km south of Niamey, Niger, West Africa (lat 13" l5'N long 2' 18'E) and at an altitude of 240 m asl. The climate at Sadore is characterized by a short rainy season from June to September (about 90 d). The average rainfall is 560 mm, is irregular and normally comes in the form of thunderstorms. During the crop growing season, maximum temperatures varied in the range of 30-40oC. Potential evapotranspiration (PET) exceeds the total rainfall in all months except July-August which are the peak months of the rainy season (Sivakumar, l986). The site is located on a sandy plain with Aeolian sands 2-8 m in depth covering one of a series of stepped surfaces comprised of cemented laterite gravels (West et al., l984). The surface horizon (25-30 cm in depth) is yellowish red sand underlain by a thick (> 1m) red loam or red sand horizon. Soils are coarse textured, with sand content exceeding 95%. Organic matter content is about 0.4%. The soils are acidic in nature (pHH2O 4.5-5.0), and low in nutrients (cation exchange capacity: 1.5 cmol kg-1) and water holding capacity (< 10%) (West et a1., 1984). The experiment was designed as a randomized complete bock (RCBD) with l3 treatments replicated four times, involving various combinations of hand cultivation (HC), ridging with animal traction and planting on ridges (AT), limited P fertilizer application and rotation with sole cowpea (C). These were tested with two cropping systems: millet-cowpea intercrop (M/C) and sole millet (M). Plot size was 500 m2 150 m x l0 m), and the area sampled for yield of each experimental plot was 75 m2 125 m x 3 m). In 1989, an additional treatment of crop residues (millet straw) was introduced by dividing each treatment plot into half. Thus, the plot size was reduced to half (250 m2, 25 m x l0 m), and similarly the sampled area became half (37.5 m2, 12.5 m x 3 m). In 1994, nitrogen treatment (15 kg N ha-1 as calcium ammonium nitrate) was introduced by further dividing each experimental plot into two, thereby creating additional treatments with nitrogen and without nitrogen.





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Subject Agricultural Sciences
Pearlmillet
Panicle weight
Grain weight
Stover yield
 
Date 2017
 
Contributor Administrator
 
Type Phenotypic data
 
Source ICRISAT