Yield and water use efficiencies of maize and cowpea as affected by tillage and cropping systems in semi-arid Eastern Kenya

Miriti, J.M.; Kironchi, G.; Esilaba, Anthony O.; Heng, Lee; Gachene, Ckk; Mwangi, D.M.

doi:10.1016/j.agwat.2012.09.002

Cited by 58 publications

(42 citation statements)

References 11 publications

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“…Literature results indicate higher WUE in intercropping systems compared with the monocropping systems (Miriti et al, 2012;Wang et al, 2015). Highest WUE values were obtained by the intercropping with irrigation depths above 1,096 mm year -1 (703 + 393 mm year -1 ) ( Figure 4B), in which the average was 21.8 ± 6.8 kg DM ha -1 mm -1 .…”

Section: Wue Y Et =mentioning

confidence: 94%

Growth, water use and efficiency of forage cactus sorghum intercropping under different water depths

Lima

Silva

Jardim

et al. 2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe effects of the forage cactus sorghum configuration and different irrigation depths on the growth, water use and efficiency of the forage cactus production system were investigated in this study. The experiment was conducted in the municipality of Serra Talhada, Pernambuco State, Brazil, between the years 2012 and 2013. Forage cactus was distributed in randomized blocks with factorial scheme and four replicates, in split plots (5 x 2), with five irrigation depths (0, 8.75, 17.5, 26.25 and 35% of the reference evapotranspiration, ET 0 ) and two cropping systems (forage cactus monocropping and forage cactus sorghum intercropping). Crop evapotranspiration was calculated through soil water balance. The ratio between crop and reference evapotranspiration, and land use and water use efficiencies, were estimated. Irrigation depths and the intercropping affected only forage cactus canopy width and cladode biomass. The ratio between crop and reference evapotranspiration increased with the increase of irrigation depths, while the highest water use efficiency based on dry matter occurred at irrigation depths higher than 1,096 mm year -1 in the intercropping (21.8 ± 6.8 kg ha -1 mm -1 ). Irrigation depths did not affect land use efficiency (0.83). Water depths from 1,096 to 1,202 mm year -1 are recommended in the forage cactus sorghum system. Crescimento, consumo de água e eficiência do consórcio palma-sorgo sob diferentes lâminas de água R E S U M OOs efeitos da configuração palma-sorgo e de diferentes lâminas de irrigação sobre o crescimento, consumo de água e eficiência do sistema de produção da palma foram investigados neste estudo. O experimento foi conduzido em Serra Talhada, PE, entre os anos de 2012 e 2013, com a palma disposta em blocos ao acaso, quatro repetições, em parcelas subdivididas (5 x 2) de cinco lâminas (0, 8,75, 17,5, 26,25 e 35% da evapotranspiração de referência) e dois sistemas de cultivo (palma exclusiva e consórcio palma-sorgo). A evapotranspiração real da cultura foi calculada por meio do balanço de água no solo. Estimou-se a razão evapotranspiração real e de referência, além das eficiências do uso da água e da terra. As lâminas de irrigação e a adoção do consórcio afetaram apenas a largura do dossel e a biomassa dos cladódios da palma forrageira. A razão evapotranspiração real e de referência aumentou com o incremento da lâmina de irrigação, enquanto as maiores eficiências do uso da água com base na massa seca ocorreram nas lâminas de água superiores a 1.096 mm ano -1 no consórcio (21,8 ± 6,8 kg ha -1 mm -1 ). As lâminas de irrigação não afetaram a eficiência do uso da terra (0,83). No sistema palma-sorgo, recomendam-se lâminas de água entre 1.096 e 1.202 mm ano -1 .

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Section: Wue Y Et =mentioning

confidence: 94%

Growth, water use and efficiency of forage cactus sorghum intercropping under different water depths

Lima

Silva

Jardim

et al. 2018

Rev. bras. eng. agríc. ambient.

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“…Contour strips (ridges) and tied ridges Kenya [27,101], Gambia [102], Tanzania [103], Ethiopia [92,104], Nigeria [105] Contour strips and tied ridges decrease soil erosion, enhance groundwater recharge and prolong soil moisture availability…”

Section: Use Of Groundwatermentioning

confidence: 99%

“…Tied ridges prolong the retention of soil moisture and enhance nutrient uptake by crops [101,104,147]. Tied ridges provide a better crop growth environment [102,148,149] in areas where the temporal rainfall variability is a challenge.…”

Section: Contour Ridges and Tied Ridgesmentioning

confidence: 99%

“…Tied ridges provide a better crop growth environment [102,148,149] in areas where the temporal rainfall variability is a challenge. Evidence of higher cereal yields and increased rain water use efficiency [27,101], and even better income [92,104], have been reported. Tied ridges can be improved to be more effective, for instance by combining tied ridges with microdosage techniques [147].…”

Section: Contour Ridges and Tied Ridgesmentioning

confidence: 99%

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Crop Upgrading Strategies and Modelling for Rainfed Cereals in a Semi-Arid Climate—A Review

Silungwe

Graef

Bellingrath-Kimura

et al. 2018

Water

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Spatiotemporal rainfall variability and low soil fertility are the primary crop production challenges facing poor farmers in semi-arid environments. However, there are few solutions for addressing these challenges. The literature provides several crop upgrading strategies (UPS) for improving crop yields, and biophysical models are used to simulate these strategies. However, the suitability of UPS is limited by systemization of their areas of application and the need to cope with the challenges faced by poor farmers. In this study, we reviewed 187 papers from peer-reviewed journals, conferences and reports that discuss UPS suitable for cereals and biophysical models used to assist in the selection of UPS in semi-arid areas. We found that four UPS were the most suitable, namely tied ridges, microdose fertilization, varying sowing dates, and field scattering. The DSSAT, APSIM and AquaCrop models adequately simulate these UPS. This work provides a systemization of crop UPS and models in semi-arid areas that can be applied by scientists and planners.

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“…Although forage cactus-sorghum intercropping and the use of irrigation with saline water may reduce the yield of the two crops, the association of these crops raises the possibility of increasing the total production, as mentioned for other irrigated intercropping systems (Miriti et al, 2012;Thierfelder et al, 2012;Wang et al, 2015). The evaluation of intercropping for the use of biological efficiency indices and competitive ability makes it possible to subsidize the public policies, in order to provide socioeconomic improvements.…”

Section: Introductionmentioning

confidence: 99%

Forage cactus-sorghum intercropping at different irrigation water depths in the Brazilian Semiarid Region

Diniz

Silva

Ferreira

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the productive performance, biological efficiency, and the competitive ability of the forage cactus-sorghum intercropping under different irrigation depths with saline water in the Brazilian Semiarid Region. The experiment was carried out in Serra Talhada, in the state of Pernambuco, between 2014 and 2015, in a randomized complete block design, with four replicates, and a 5x3 factorial arrangement in split plots, with one year of forage cactus cycle and two years of sorghum cycles. The plots were composed by four irrigation water depths based on the fractions of 25, 50, 75, and 100% of the reference evapotranspiration, besides dry conditions; and the subplots consisted of three cropping systems (single crop of forage cactus, single crop of sorghum, and intercropping of forage cactus-sorghum). The increase of water irrigation depths increased the yields of sorghum in single crop and of the forage cactus-sorghum intercropping. The intercropping system promoted production stability with a higher system productivity index (SPI) for forage cactus-sorghum intercropping (6,279.02 kg ha -1 DM) than for forage cactus in single crop (4,626.98 kg ha -1 DM). The relative density coefficient (12.33) was indicative of the great compatibility of the intercropping system. The forage cactus-sorghum association shows biological advantage and competitiveness capacity, with a higher productive index than their monocultures.Index terms: Opuntia stricta, Sorghum bicolor, agronomic performance, biological efficiency, competitive ability, saline water irrigation. Consórcio palma-sorgo irrigado com diferentes lâminas de água no Semiárido brasileiroResumo -O objetivo deste trabalho foi avaliar o desempenho produtivo, a eficiência biológica e a habilidade competitiva do consórcio palma-sorgo sob irrigação com diferentes lâminas de água salina, no Semiárido brasileiro. O experimento foi realizado em Serra Talhada, PE, entre 2014 e 2015, em delineamento de blocos ao acaso, com quatro repetições, em arranjo fatorial 5x3, com parcelas subdivididas, tendo sido um ano de ciclo de palma e dois ciclos de sorgo. As parcelas foram compostas por quatro lâminas de irrigação com base nas frações de 25, 50, 75 e 100% da evapotranspiração de referência, além das condições de sequeiro, e as subparcelas consistiram de três sistemas de plantio (palma solteira, sorgo solteiro e consórcio palma-sorgo). O aumento das lâminas de água incrementou a produtividade do sorgo e do consórcio palma-sorgo. O consórcio promoveu estabilidade na produção, com índice de produtividade do sistema (IPS) palma-sorgo (6.279,02 kg ha -1 MS) maior que o de palma em cultivo solteiro (4.626,98 kg ha -1 MS). O coeficiente de adensamento relativo (12,33) foi indicativo de ótima compatibilidade do consórcio. A associação palma-sorgo apresenta vantagem biológica e capacidade competitiva com maior índice produtivo que os dos seus monocultivos.Termos para indexação: Opuntia stricta, Sorghum bicolor, desempenho agronômico, eficiência bi...

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Yield and water use efficiencies of maize and cowpea as affected by tillage and cropping systems in semi-arid Eastern Kenya

Cited by 58 publications

References 11 publications

Growth, water use and efficiency of forage cactus sorghum intercropping under different water depths

Growth, water use and efficiency of forage cactus sorghum intercropping under different water depths

Crop Upgrading Strategies and Modelling for Rainfed Cereals in a Semi-Arid Climate—A Review

Forage cactus-sorghum intercropping at different irrigation water depths in the Brazilian Semiarid Region

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