Nutrient release pattern of organic and inorganic resources used in cassava production (<i>Manihot esculenta</i> Crantz)

Radhakrishnan, Anitha; Suja, G.

doi:10.1080/01904167.2019.1617305

Cited by 7 publications

(2 citation statements)

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“…During the early stages, cowpea may compete with cassava for nutrients, moisture, light, and space to a small extent. However, the huge biomass addition, rapid mineralization of cowpea biomass and nutrient contribution, especially organic C, after soil incorporation, would improve the soil health (Seena Radhakrishnan & Suja, 2019). This would subsequently trigger crop growth and make up for the competition, if any during early stages.…”

Section: Discussionmentioning

confidence: 99%

Weed cloth, an option for integrated weed management for short‐duration cassava

et al. 2021

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Weeds, a major constraint in cassava (Manihot esculenta Crantz), cause 45-75% yield loss. Weed management in short-duration cassava is unexplored. Field experiment was conducted during 2013-2015 at ICAR-Central Tuber Crops Research Institute (CTCRI), Kerala, India, in a split-plot design. Main plots comprised three shortduration cassava varieties (H-165, Sree Vijaya, and Vellayani Hraswa) and subplots five weed control methods, chemical (using pre-emergence herbicide, oxyfluorfen at 0.2 kg a.i. ha −1 on the day of planting), mulching with crop residues and green manure, weed control ground cover cloth (WCGCC), hand-weeded, and unweeded controls. Weed flora was dominated by broad-leaved weeds, hog weed or red spiderling (Boerhavia diffusa L.), colored fleabane (Vernonia cinerea L.), red tassel flower [Emilia sonchifolia (L.)], Asian spiderflower or tick weed (Cleome viscosa L.) and the nutsedge (Cyperus rotundus L.), which were absent under WCGCC. Plant height, stem girth, leaf production, tuber biomass, total biomass, crop growth rate, and tuber yield under WCGCC and chemical treatment were greater. The yield under WCGCC was 35 and 15% greater than hand-weeding and chemical methods, respectively. The yield in chemical method was 17% greater than hand-weeding. Combination of crop residues and green manuring were alternatives to chemical and handweeding methods. Unrestricted weed growth reduced yield by 74% over hand-weeding. Weed index was lowest in WCGCC, but similar to chemical and eco-friendly practices. Chemical method generated highest net income and benefit/cost ratio (US$3,315 and 3.4, respectively). The WCGCC, pre-emergence herbicide, and biomass mulching can be components of integrated weed management in cassava.

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Section: Discussionmentioning

confidence: 99%

Weed cloth, an option for integrated weed management for short‐duration cassava

et al. 2021

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“…Some studies have shown the advantages of using organic fertilizer in cassava in terms of improved leaf and stem growth, transfer of photosynthates to storage roots, and increased yield and starch content in the storage roots of cassava (Zhongyong et al, 2006;Shafeek et al, 2012;Seena Radhakrishnan, 2017). The release of almost all the nutrients and activity of soil enzymes were higher along with an increasing trend in pH and electrical conductivity (Linn and Myint, 2018;Seena Radhakrishnan and Suja, 2019). Nutritional quality was improved by organic fertilization with significant effects on antioxidant activity and phenolic metabolites in cassava (Omar et al, 2012).…”

Section: Figurementioning

confidence: 97%

Cassava yield gap—A model-based assessment in Nigeria

Srivastava

Ewert²,

Akinwumiju³

et al. 2023

Front. Sustain. Food Syst.

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IntroductionCassava production is essential for food security in sub-Saharan Africa and serves as a major calorie-intake source in Nigeria. Estimating the yield gap in Nigeria is essential to indicate the most important limiting factors for production, and identify the yield gap hotspot areas. Secondly, these assessments may help set agendas in policy development and research prioritization where current information is scarce.Materials and methodsHere, Wwe used a crop model, LINTUL5, calibrated for five different cassava varieties based on field experiments embedded into a modeling framework SIMPLACE to estimate potential, water- and nutrient (current) limited cassava yield gaps (YG) as affected by climate factors and contributing a better understanding of yield gaps and its potentials in 30 states of Nigeria.ResultsOur study shows that cumulative radiation and precipitation were the most significant factors associated with cassava yield variability (p < 0.01). The YG averaged across states was estimated as 18.2 Ton7ha-1, with a maximum of 31.2 Ton7ha-1 35 in Kano state. Across the states, nutrient limitation accounts for 55.3% of the total cassava yield gap, while the remaining 44.7% is attributed to water limitation. The highest untapped water-limited yields were estimated in the northern states, such as Bauchi, Gombe, and Sokoto, characterized by the short rainy season.ConclusionOur results showed that most northern states are better equipped to become leading cassava producers in Nigeria under adequate crop management practices involving irrigation and soil fertility enhancement. We reached this conclusion because the northern states usually receive the highest radiation from their characteristic reduced cloud cover, even Therefore, policy and management interventions can be prioritized in these areas. Conclusively, the current cassava yield levels can be increased by a factor of five by emphasizing nutrient and soil health management and irrigation, particularly in areas characterized by a shorter rainy season (Sudan Savanna) in Nigeria.

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Mineral nutrition of cassava

Byju

Suja

2020

Advances in Agronomy

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Nutrient release pattern of organic and inorganic resources used in cassava production (Manihot esculenta Crantz)

Cited by 7 publications

References 16 publications

Weed cloth, an option for integrated weed management for short‐duration cassava

Weed cloth, an option for integrated weed management for short‐duration cassava

Cassava yield gap—A model-based assessment in Nigeria

Mineral nutrition of cassava

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