Water use, growth, and yield of drip irrigated cassava in a humid tropical environment

Odubanjo, O. O.; Olufayo, A. A.; Oguntunde, Philip G.

doi:10.17221/45/2009-swr

Cited by 29 publications

(20 citation statements)

References 16 publications

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“…Most cassava growing areas are under rainfed conditions, and they are at a high risk of drought, which causes severe yield reductions [1]. Drought delays canopy development, leaf size and the rate of leaf emergence and, therefore, it reduces photosynthesis and storage root yield of cassava [30][31][32]. Irrigation helps maintain the canopy size with long leaf size, leaf area and leaf area duration [28,30].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variations in Canopy Size and Yield of Rayong 9 Cassava Genotype under Rainfed and Irrigated Conditions

et al. 2019

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The objectives of this study were to investigate the effect of seasonal variation on canopy size, and the effect of canopy size on light penetration of ‘Rayong 9′ cassava under irrigated and rainfed conditions. Rayong 9 was planted under two water regimes in a randomized complete block design with four replications in May and November for two years. At final harvest, years were significantly different (p ≤ 0.05) for biomass, shoot dry weight, and harvest index and contributed to large portions of total variations in shoot dry weight (56.8%) and HI (44.5%). Planting date was a significant source of variations in all measured characters, and it contributed to the largest portions of variations in biomass, storage root dry weight and storage root fresh weight (46.1–60.9%). Water regimes were not significantly different for most characters except for harvest index (p ≤ 0.01). The canopy of the crop planted in May grew rapidly in early growth stages in the rainy season and then slowly after the rainy season. The canopy of the crop planted in November grew rapidly in the middle to the late growth stages. Irrigation did not significantly increase root yield although it slightly increased canopy development, leaf area index (LAI), light penetration and photosynthesis. Irrigation at the late growth stages of the crop planted in May significantly increased storage root yield. Irrigation at these growth stages helped maintain canopy development, LAI and light penetration.

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Section: Introductionmentioning

confidence: 99%

Seasonal Variations in Canopy Size and Yield of Rayong 9 Cassava Genotype under Rainfed and Irrigated Conditions

et al. 2019

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“…Embora com grande aumento de matéria na parte vegetativa, incrementos significativos na produtividade de raízes de mandioca, com o uso de irrigação, indicam, assim, grande responsividade da cultura à suplementação hídrica (Odubanjo et al 2011).…”

Section: Resultsunclassified

“…A maior taxa de acúmulo diário, obtida no ponto de inflexão da curva de crescimento, revelou que a época de máximo crescimento da planta ocorreu aos 159,49 DAP (Figura 1b). Embora a quantidade acumulada de matéria seca total seja inferior à obtida por Odubanjo et al (2011), em condições irrigadas, ressalta-se que o estudo foi conduzido em cultivo solteiro, propiciando altos valores de produção de biomassa vegetal.…”

Section: Resultsunclassified

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Acúmulo de matéria seca e micronutrientes em mandioca consorciada com bananeira

Silva

Melo

Pacheco

et al. 2014

Pesqui. Agropecu. Trop.

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INTRODUÇÃOA mandioca é uma espécie perene, de propagação vegetativa e origem sul-americana, pertencente à família Euphorbiaceae, cultivada em todas as regiões do território nacional, sob diversas condições edafoclimáticas. Caracterizada pela produção de raízes e fécula, apresenta importância socioeconômica na região dos trópicos, sendo utilizada como fonte alimentar para humanos e animais, além da produção ABSTRACT RESUMOde energia renovável (Rós et al. 2011, Odubanjo et al. 2011. A determinação do requerimento de nutrientes pelas plantas deve ser feita por meio do conhecimento da curva de crescimento e de absorção de nutrientes pelos órgãos da planta, nas várias fases de desenvolvimento, dentro do ciclo de cultivo. A análise química dos órgãos vegetais é uma ferramenta que permite a avaliação do estado nutricional da planta, identificando a produtividade das culturas, em função Dry matter and micronutrients accumulation in cassava intercropped with banana treeCassava is an important intercropping plant. However, there is little information on its dry matter accumulation and partitioning, as well as micronutrient demand, when it is intercropped with fruit trees. The study was conducted in Januária, Minas Gerais State, Brazil, in 2010-2011, aiming at evaluating the dry matter and micronutrients accumulation in cassava intercropped with irrigated banana tree. A randomized blocks design, with four replications, was used, with treatments consisting of 14 sampling periods, from sowing to harvest. At each sampling period, plants were classified as shoots (stems and leaves) and roots, for determining their dry matter and contents of Cu, Fe, Mn and Zn. The dry matter and micronutrients accumulation fitted a sigmoidal growth pattern. The shoot dry matter accumulation increased up to 200 days after planting (DAP), stabilizing thereafter up to the end of the crop cycle. For roots, the dry matter accumulation was continuous up to the end of the cycle. From 250 DAP, roots became the main dry matter accumulation organ. Micronutrients accumulation in cassava plants occured in the following order: Fe > Zn > Mn > Cu. It was concluded that the cultivation of cassava intercropped with banana tree is viable, provided there is a proper availability of micronutrients required by plants. KEY-WORDS:Manihot esculenta Crantz.; Musa spp.; mineral balance.

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“…Until recently, it was grown mainly in poor soils (Howeler, 2001) and under water-scarce conditions, resulting in minimum growth and root yield. However, lately, root yields have been improved through irrigation (Amanullah et al, 2006;Odubanjo et al, 2011) and application of nutrients (Fermont et al, 2009;Byju et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Nutrient use efficiency and harvest index of cassava decline as fertigation solution concentration increases

Omondi

Lazarovitch

Rachmilevitch

et al. 2018

J. Plant Nutr. Soil Sci.

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Response of cassava (Manihot esculenta Crantz) to fertigation as a form of nutrient delivery is unknown. The objectives of this study were to establish a balanced nutrition and to enhance agronomic nutrient use efficiency (ANUE) of cassava under fertigation. This study was conducted in the greenhouse and in the field. In both, the results showed a similar trend. There were six fertigation concentrations and three cassava varieties, selected for their duration of growth in the field. Shoot biomass of the long‐duration variety (Nalumino) was the highest, even though its dry root yield was the lowest (10.18 t ha−1) among the varieties. In contrast, the medium‐duration variety (Kampolombo) produced the highest dry root yield (20.34 t ha−1) and a lower shoot biomass. The highest root yield of the shortest‐duration variety (Mweru) was achieved at 200 mg N, 30 mg P, and 200 mg K L−1 (155.0, 23.3, 155.0 kg N, P, K ha−1), while Nalumino's was at 70 mg N, 7 mg P, and 70 mg K L−1 (54.3, 5.4, 54.3 kg N, P, K ha−1). ANUE and harvest index of these varieties declined as the fertigation concentrations increased. Additionally, the correlation between concentrations of N in the youngest fully expanded leaf (YFEL) blades and dry root yields was the lowest (R2 = 0.5488), whereas P and K were R2 = 0.7237 and R2 = 0.8006, respectively, an indication that nutrient concentrations in the leaf, especially N, cannot easily be used to predict root yield. When cassava reaches nutrient sufficiency, mainly N, its accumulation in the leaf continues without significant increase in the root yield.

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Water use, growth, and yield of drip irrigated cassava in a humid tropical environment

Cited by 29 publications

References 16 publications

Seasonal Variations in Canopy Size and Yield of Rayong 9 Cassava Genotype under Rainfed and Irrigated Conditions

Seasonal Variations in Canopy Size and Yield of Rayong 9 Cassava Genotype under Rainfed and Irrigated Conditions

Acúmulo de matéria seca e micronutrientes em mandioca consorciada com bananeira

Nutrient use efficiency and harvest index of cassava decline as fertigation solution concentration increases

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