Soil Fertility Management for Organic Crops

Gaskell, Mark; Smith, Richard; Mitchell, J. P.; Koike, S. T.; Fouche, C. F.; Hartz, T.K.; Horwáth, William R.; Jackson, Louise E.

doi:10.3733/ucanr.7249

Cited by 30 publications

(20 citation statements)

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“…These values are higher than those obtained by Schmitt and Rehm [22]. Gaskell et al found 2-3% of N, but only 1.5% of phosphorous and potassium in chicken manure [23]. Because poultry manure is usually stored for varying lengths of time and is mixed with litter material when it is obtained from floor pens, it will vary in composition.…”

Section: Discussionmentioning

confidence: 78%

“…It allows keeping soil fertility, while improving soil structure and availability of mineral elements. In fact, the increase in soil organic matter to optimum levels is a key aspect of any organic production system [23]. The locally produced poultry manure is available in good quantity and for all social groups and it seems to be economically more profitable than more expensive mineral manure.…”

Section: Discussionmentioning

confidence: 99%

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Impact of organic and inorganic fertilizers on tomato vigor, yield and fruit composition under tropical andosol soil conditions

Tonfack¹,

Bernadac²,

Youmbi³

et al. 2009

Fruits

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--Introduction. Little is known about the impact of organic manure on andosol. Materials and methods. Two varieties of Solanum lycopersicum L. (cvs. 'Rio grande' and 'Rossol VFN') were grown under tropical andosol. The soil was silty, acidic and very poor in Bray P (3 mg·kg -1 ) with a strong imbalance in the (Ca:Mg:K) ratio of (74.0:25.0:0.7). Five fertilization treatments were used: (i) control with no fertilizer, (ii) minerals, with a (Ca:Mg:K) ratio of (76:18:6) and 75 mg P·kg -1 of soil; (iii) poultry manure with a (Ca:Mg:K) ratio of (68:24:7) and 450 mg P·kg -1 of soil; (iv) a combination of (ii) and (iii), and (v) mineral fertilization as applied by local farmers, with a (Ca:Mg:K) ratio of (73:25:1) and 54 mg P·kg -1 of soil. Results. All cationbalanced treatments (organic, mineral or a combination of both) significantly improved plant growth, the number of trusses and fruits per plant, the marketable fruit yield and fruit P, K, Ca and Na contents of both tomato varieties considered. The 'Rio grande' variety was the most productive (32-44 t·ha -1 ) compared with the 'Rossol' variety (20-22 t·ha -1 ). There was no major difference between the organic fertilizer and the cation-balanced mineral fertilizer. There was no effect of mineral fertilizer with an unbalanced cation composition on tomato plant growth and production as compared with unfertilized control. Conclusion. In tropical andosol poor in potassium and phosphorous and with excess of Mg, application of poultry manure in adequate dosage and at the right time is capable of sustaining tomato fruit production, as well as the application of calculated inorganic fertilizer. ). Il n'y a pas eu de différences majeures entre les plants fertilisés avec l'engrais organique et ceux ayant reçu un engrais minéral équilibré en cations. La fertilisation minérale déséquilibrée en cations n'a pas eu d'effet sur la croissance et la production des plants de tomate par rapport au traitement témoin sans engrais. Conclusion. Dans les andosols tropicaux pauvres en potassium et en phosphore et présentant un excès de magnésium, l'application de fumier de volaille à des doses adaptées et au bon moment permet de maintenir une production de tomates équivalente à celle obtenue avec un engrais minéral bien dosé.Cameroun / Solanum lycopersicum / fruits / andosol / fertilisation / engrais minéral / engrais organique / croissance / qualité

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Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Impact of organic and inorganic fertilizers on tomato vigor, yield and fruit composition under tropical andosol soil conditions

Tonfack¹,

Bernadac²,

Youmbi³

et al. 2009

Fruits

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“…Growing legume cover crops is generally the most economical way to provide plant-available N in organic systems (Gaskell et al 2000b). However, organic growers often use other methods to augment soil nitrogen supply (Hartz and Johnstone 2006).…”

Section: Nutrientsmentioning

confidence: 99%

Organic production of vegetables: State of the art and challenges

Dorais¹

2007

Can. J. Plant Sci.

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Dorais, M. 2007. Organic production of vegetables: State of the art and challenges. Can. J. Plant Sci. 87: 1055-1066. In light of the growing concern of Canadians about animal waste, environmental pollution from fertilizers, water quality and greenhouse gas effects, as well as their growing interest in organically grown foods (20% annual growth in North America), the development of sustainable organic production systems for vegetable crops is essential for consumer satisfaction and Canadian grower competitiveness. The target of this paper is to review recent research results on the importance of appropriate soil properties, fertilizers and irrigation management on soil activity, plant growth and environmental health as well as product quality in term of nutritional value and safety issue. Species and cultivar selection, the use of grafting and plant growth promoters will also be discussed. This review will identify new challenges that organic growers have to fulfill in the face of a global market and public awareness of health attributes of food, and then conclude by identifying several prospects for future research with emphasis on the Agriculture and Agri-Food Canada research program.

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“…applied to them. The bioassays are performed to check the components present in the plants and the growth of the plants were checked, followed by total carbohydrates [7] , total protein [8] , total lipid [9] , total phenol [10] , total chlorophyll and total carotenoids [11] were also estimated.…”

Section: Application Of Fertilizer Samples To the Crop Grownmentioning

confidence: 99%

Production Application and Comparison of Solid – Liquid Fertilizers From Vegetable Waste

J¹

2017

WJPPS

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Vegetable wastes are produced in large quantities in the markets across the world, to make use of this waste and to reduce the pollution they can be used to produce biofertlizers. Since biofertlizers are one of the best tool that is used in the agricultural field, which is applied as a replacement of conventional fertilizers. The nutrients present in the fertilizers were determined and comparative study was undertaken to evaluate the efficiency of produced fertilizers. The different crops like green gram, horse gram and soya bean were grown and bioassay of the plants was performed to compare the efficiency of fertilizers. The main objective of this work is to build a platform that biofertlizers obtained from vegetable waste are better than the conventional fertilizers.

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Soil Fertility Management for Organic Crops

Cited by 30 publications

References 0 publications

Impact of organic and inorganic fertilizers on tomato vigor, yield and fruit composition under tropical andosol soil conditions

Impact of organic and inorganic fertilizers on tomato vigor, yield and fruit composition under tropical andosol soil conditions

Organic production of vegetables: State of the art and challenges

Production Application and Comparison of Solid – Liquid Fertilizers From Vegetable Waste

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