Productivity of Maize (&lt;i&gt;Zea mays&lt;/i&gt; L.) and Mung bean (&lt;i&gt;Vigna radiate&lt;/i&gt; L. Wikzek) in Homegardens and Cropping Fields under Subsistence Conditions

Wijesinghe, Dinuka; Egodawatta, W. C. P.; Sangakkara, U. R.; Pushpakumara, D. K. N. G.; Stamp, P.

doi:10.4038/tar.v21i2.2598

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…Across farms for each range of inclination and mineral nutrient fertilization, the high impact of NPK and PK indicates that the chemical soil fertility was not exploited at ZERO, so that there is considerable room for increasing yield when and if it becomes economically feasible in the future. Confirming a report by FAO (2006), nitrogen was a key factor in achieving higher yields; this was corroborated too for more fertile home gardens at much greater inclinations (Wijesinghe et al, 2009;Egodawatta et al, 2012). However, even a high rate of N was not enough to elevate yields on farms at Moderate compared to yield at Flat, which was especially pronounced in the rather dry second season.…”

Section: Discussionsupporting

confidence: 64%

Yield Responses of Maize to Organic and Mineral Fertilizers at Different Inclinations in Tropical Smallholder Farming Systems

Egodawatta¹,

Stamp²,

Sangakkara³

2013

JAS

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A field study was conducted on the potential of Gliricidia (Gliricidia sepium (Jacq.) Kunth ex Walp.) to enhance productivity of degraded soils. Maize was cropped in a hilly region of Sri Lanka with and without the recommended mineral fertilization, in two major seasons, October-January in 2007/8 (Year 1) and in 2008/9 (Year 2) on 92 farms at two inclinations: Flat (0-10%) and Moderate (10-30%). On half the farms, green manure (Gliricidia leaves) was added (3 tonnes per hectare per season). NPK boosted production to a very respectable mean grain yield of 4.2 t/ha on Flat farms. At ZERO, the yield was lower by 60%, irrespective of the inclination. Gliricidia failed to replace the required nitrogen, even with an adequate supply of phosphorous and potassium (PK). In contrast, together with NPK, Gliricidia increased yields by 15-20% compared to NPK alone, while the gain was 35% at ZERO. Fields in the Moderate category were more responsive to green manure and mineral fertilizers. The high response to mineral fertilizers indicated that the degradation of the soils resulted to a greater extent in chemical rather than in physical deficits. But intensive cropping reduced the soil organic matter within two years, to some extent slowed down by Gliricidia green manure. Therefore an intense cropping for the sake of food security must be accompanied by soil conserving cropping systems.

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Section: Discussionsupporting

confidence: 64%

Yield Responses of Maize to Organic and Mineral Fertilizers at Different Inclinations in Tropical Smallholder Farming Systems

Egodawatta¹,

Stamp²,

Sangakkara³

2013

JAS

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“…Three of the 25 articles that directly quantified food security aspects also quantified and compared findings with other land-use systems not defined as homegardens or other AFS (Caron 1995;Illukpitiya and Yanagida 2008;Wijesinghe et al 2009). In terms of geographical distribution, 14 articles quantified food aspects within a specific district or agricultural zone (dry, intermediate or wet), whereas four papers assessed these aspects between different districts or ecological zones.…”

Section: Direct Quantification Of Food Securitymentioning

confidence: 99%

What is good about Sri Lankan homegardens with regards to food security? A synthesis of the current scientific knowledge of a multifunctional land-use system

2017

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Recently, there has been growing interest in agroforestry systems due to their great potential to mitigate threats to household food and nutrition security from soaring food prices but also as carbon sinks. In Sri Lanka, smallholder farms such as homegardens constitute a majority of Sri Lanka's total annual crop and timber production. Despite Sri Lankan homegardens being considered desirable and sustainable land-use systems, their role in food and nutrition security is not yet entirely understood. By synthesising scientific articles and grey literature we sought the link between food security and homegardens by quantifying their products or services and ascertaining whether food security characteristics are assessed as direct or indirect impacts. The results show that 27 % of 92 identified articles directly quantified aspects that are relevant to food security. Another 51 % of the articles quantified indirect aspects that have relevance for food security, including climate, soil, ecosystem services, structural and floristic diversity and economic aspects. Twenty-two percent of the articles were categorised as being qualitative or conceptual and contained no direct assessments or quantification of food security. The presence of significant merits from homegardens includes providing food security throughout the year at low-cost while sustaining numerous ecosystem services. This benefits particularly the poor farmers. However, many studies are descriptive and only provide location-specific information on single research focuses such as plant species, yield and management. There are few comparisons with crop land, forests or other production systems, and there is even less empirical evidence and quantification of the food security and other benefits. Seven areas where more scientific focus would be beneficial are identified. Homegardens are strong in national policies and to reach a greater level of efficiency within these activities our findings suggest more emphasis on a higher degree of inclusiveness of relevant stakeholders and long-term engagements with context specific guidance.

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“…Maximum reduction (7%) in soil bulk density and an increase (11%) in total soil porosity and available water content (17%) were observed in plots where Sesbania was incorporated as green manure. Incorporation of green manure (Gliricidia sepium) improved the soil properties of home gardens significantly when compared to cropping fields, although the impact declined with increasing inclination and the soil depth (Wijesinghe, et al, 2009). Sriramachandrasekran et al (1996) compared different organic manures for micronutrient availability and reported higher availability of Zn, Fe, and Mn on Sesbania aculeata treated soil as compared to paddy straw and composted coir pith.…”

Section: Physical Propertiesmentioning

confidence: 99%

Vrkshayurvedic Farming - A revisit and review

Swaminathan¹,

Nandhakumar²

2011

MAJ

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I ndian System of Agriculture viz., Vrkshayurveda is an ancient Indian farming and traditional ways for food production in concomitant with Mother Nature but now-a-days it is a remedial measure to manoeuvre the ill effects of modern chemical agriculture. Based on the authors experiences in vrkshayurveda with crops like green gram, onion, sorghum, maize, black gram, cow pea and bhendi, the available literature pertaining to this traditional knowledge is reviewed, discussed and presented.

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Productivity of Maize (<i>Zea mays</i> L.) and Mung bean (<i>Vigna radiate</i> L. Wikzek) in Homegardens and Cropping Fields under Subsistence Conditions

Abstract: ABSTRACT. Low sustainability is an inherent character of tropical

Cited by 3 publications

References 9 publications

Yield Responses of Maize to Organic and Mineral Fertilizers at Different Inclinations in Tropical Smallholder Farming Systems

Yield Responses of Maize to Organic and Mineral Fertilizers at Different Inclinations in Tropical Smallholder Farming Systems

What is good about Sri Lankan homegardens with regards to food security? A synthesis of the current scientific knowledge of a multifunctional land-use system

Vrkshayurvedic Farming - A revisit and review

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