Nutritional Disorders in Glasshouse Lettuce

Eysinga, J.P.N.L. Roorda van; Smilde, K. W.

doi:10.2136/sssaj1972.03615995003600040006x

Soil Science Soc of Amer J

1972

DOI: 10.2136/sssaj1972.03615995003600040006x

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Nutritional Disorders in Glasshouse Lettuce

J.P.N.L. Roorda van Eysinga¹,

K. W. Smilde²

Abstract: The 'Instituut voor Bodemvruchtbaarheid' (Institute for Soil Fertility) is a governmental institution. Research work includes various aspects of soil physics, soil chemistry and soil organic matter, and of plant nutrition and fertilizer application. The 'Proefstation voor de Groenten-en Fruitteelt onder Glas' (Glasshouse Crops Research and Experimental Station) was founded and is now owned by an association of growers and it is subsidized by the Dutch government. The aim of the research work is to increase pro… Show more

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1990

1991

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Cited by 2 publications

References 27 publications

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Effect of boron and copper contaminants in poultry manure on the growth of the common mushroom, Agaricus bisporus

Cresswell¹,

Nair²,

Evans³

1990

Aust. J. Exp. Agric.

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The toxicity of boron (B) and copper (Cu) to cultivated mushrooms was tested in 2 experiments. The growth of mushroom mycelium (Agaricus bisporus) on potato dextrose agar in vitro was inhibited by additions of B as H3BO3 and Cu as CuSO4.5H20. Boron was more inhibitory than Cu to mycelial growth. Addition of B to compost at spawning decreased sporophore (i.e. mushroom) production and increased B concentrations in the sporophore. Boron added at 35 mg/kg of fresh compost gave a 10% yield reduction and this was associated with a sphorophore tissue B concentration of 170 mg/kg dry weight. Addition of Cu to the compost had no effect on the final yield of mushrooms but increased Cu concentrations in the sporophores. Boron added at 5, 10 and 20 mg/kg and Cu at 10 mg/kg of fresh compost stimulated sporophore growth at first flush but this was not evident in total mushroom yield from all flushes. There was a significant negative linear effect of mushroom tissue B (r2=0.98) and Cu (r2=0.54) at harvest 1 (day 1) on the change in tissue B or Cu from harvest 1 to 6 (day 17). This suggested that tissue B was buffered around 7 mg/kg and Cu around 73 mg/kg. The results indicate that the levels of B and Cu which are normally contributed to mushroom compost from poultry litter are unlikely to cause significant losses in mushroom production.

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Effect of boron and copper contaminants in poultry manure on the growth of the common mushroom, Agaricus bisporus

Cresswell¹,

Nair²,

Evans³

1990

Aust. J. Exp. Agric.

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Uptake of nutrients by lettuce on NFT with controlled composition of the nutrient solution.

Heinen¹,

Jager²,

Niers³

1991

NJAS

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An automatically-controlled recirculating NFT system was developed, consisting of a growth unit and a measuring and control unit. It is described together with some basic growth and uptake models. Results are presented of a preliminary experiment with the lettuce cultivar Sitonia (using manual control and nutrient dosage). The % DM in the heads decreased from 6.86 (week 1, 20 June 1988) to 3.89 (week 5, 25 July). The shoot:root ratio increased from 0.50 (week 1) to 6.47 (week 6). The time courses of DW increase and cumulative uptake of macronutrients were well described by exponential equations. The cumulative uptake determined from the loss of nutrients from the nutrient solution exceeded that determined from plant analysis. Cumulative uptake as a function of cumulative daily radiation was well described by a logistic equation. Some constant plant uptake ratios between micro- and macronutrients were observed: Cl uptake was related to that of N, K, P or Mg, and B uptake to that of K. DW as a function of transpiration was also well described by a logistic model, with an average DM production of 3.1 g/litre transpired; a logistic model also expressed transpiration as a function of radiation, with an average transpiration output of 5.8 litres/unit (kJ/cmsuperscript 2) increase in radiation. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Nutritional Disorders in Glasshouse Lettuce

Cited by 2 publications

References 27 publications

Effect of boron and copper contaminants in poultry manure on the growth of the common mushroom, Agaricus bisporus

Effect of boron and copper contaminants in poultry manure on the growth of the common mushroom, Agaricus bisporus

Uptake of nutrients by lettuce on NFT with controlled composition of the nutrient solution.

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