Evaluation and correction of nutrient availability to Gerbera jamesonii H. Bolus in various compost-based growing media

Abstract Nutrient deficiencies usually constrain the use of some composted materials as peat-substitute growing media even if some fertilizer is applied to the media. In this work, we assessed the suitability of various composted materials as such or mixed with peat for potted plant production, with special emphasis on their effects on nutrient availability to plants. Further, we examined the effect of vivianite [Fe 3 (PO 4 ) 2 ·8H 2 O] as a fertilizer and its mixture with humic substances (HS) on these growing media (particularly their effectiveness in preventing Fe deficiency chlorosis in alkaline substrates). A completely randomized experiment design was developed involving the growth of gerber ( Gerbera jamesonii H. Bolus) and two factors, namely (i) the growing medium, specifically composted cork residue (C), compost obtained from a mixture of olive husk and cotton gin trash mixed with rice hulls and peat in a 1:1:1 volume proportion (OH), composted grape marc (GM), Sphagnum peat mixed with spent mushroom compost (M), coconut fibre (CF), and Sphagnum peat; and (ii) the Fe source (control without Fe, Fe-EDDHA, vivianite and vivianite + HS in a weight ratio of 10:1). The highest chlorophyll meter readings were provided by the two media with the lowest pH (peat and CF), and the lowest readings were provided by the medium exhibiting the highest pH (C). Composted grape marc (GM) and M provided the largest amounts of dry matter (DM), whereas peat and M gave the highest flower yields. Flower and DM yield were lower in CF and C than those in other substrates; the low production in the former can be ascribed to Ca deficiency; in fact, the medium was poor in this nutrient; therefore, plants grown on it exhibited low Ca concentration in leaves. On the other hand, the low chlorophyll meter readings and DM yield in C can be largely ascribed to Fe deficiency chlorosis since the application of Fe improved both the parameters, the best results being obtained with the vivianite + HS mixture. Vivianite-based treatments increased P concentrations in leaves, but only in more acidic medium (CF and peat), where the pH of the media facilitated the dissolution of the product. The adverse effects of Fe sources on the Mn and Zn concentrations in leaves were as a result of the antagonistic effect of the Fe supply, which varied with the particular growing medium: Fe-chelate depressed Mn in plants grown on C, whereas vivianite + HS decreased the Mn concentration in plants grown on GM. The results obtained with the different compost-based materials studied and the ability to overcome Fe deficiency in C by using a vivianite + HS mixture are interesting with a view to reduce the use of peat in the potted plant industry.

[1]  E. Vasconcelos,et al.  Evaluation of a compost obtained from forestry wastes and solid phase of pig slurry as a substrate for seedlings production. , 2007, Bioresource technology.

[2]  M. Bernal,et al.  Composts as Media Constituents for Vegetable Transplant Production , 2004 .

[3]  J. Lucena.  Effects of bicarbonate, nitrate and other environmental factors on iron deficiency chlorosis. A review , 2000 .

[4]  A. Delgado,et al.  Humic substances increase the effectiveness of iron sulfate and Vivianite preventing iron chlorosis in white lupin , 2008, Biology and Fertility of Soils.

[5]  T. Sinclair,et al.  Variation in Manganese and Iron Accumulation Among Soybean Genotypes Growing on Hydroponic Solutions of Differing Manganese and Nitrate Concentrations , 2005 .

[6]  R. Cabrera,et al.  Soybean Growth on Calcareous Soil as Affected by Three Iron Sources , 2003 .

[7]  J. Torrent,et al.  Temporary flooding increases iron phytoavailability in calcareous Vertisols and Inceptisols , 2005, Plant and Soil.

[8]  J. Torrent,et al.  Zinc phytotoxicity to oilseed rape grown on zinc-loaded substrates consisting of Fe oxide-coated and calcite sand , 2003, Plant and Soil.

[9]  J. Lucena.  Fe Chelates for Remediation of Fe Chlorosis in Strategy I Plants , 2003 .

[10]  Antonio Delgado,et al.  Iron Chlorosis in Gerber as Related to Properties of Various Types of Compost used as Growing Media , 2007 .

[11]  C. Chatterjee,et al.  Impact of iron stress on biomass, yield, metabolism and quality of potato (Solanum tuberosum L.) , 2006 .

[12]  Caixian Tang,et al.  A critical review on methods to measure apoplastic pH in plants , 2000, Plant and Soil.

[13]  J. Pushnik,et al.  Iron chlorosis, a world wide problem, the relation of chlorophyll biosynthesis to iron , 1984 .

[14]  J. Abadía,et al.  Foliar fertilization to control iron chlorosis in pear (Pyrus communis L.) trees , 2004, Plant and Soil.

[15]  R. Mulvaney.  Nitrogen-Inorganic Forms , 2018, SSSA Book Series.

[16]  W. Lindsay,et al.  Development of a DTPA soil test for zinc, iron, manganese and copper , 1978 .

[17]  A. Delgado,et al.  Effects of humic substances on iron nutrition of lupin , 2007, Biology and Fertility of Soils.

[18]  J. M. Gascó,et al.  Reuse of waste materials as growing media for ornamental plants. , 2005, Bioresource technology.

[19]  Ana Moliner,et al.  Use of pruning waste compost as a component in soilless growing media. , 2005, Bioresource technology.

[20]  R. Pinton,et al.  Water-extractable humic substances enhance iron deficiency responses by Fe-deficient cucumber plants , 1999, Plant and Soil.

[21]  P. Fisher,et al.  Iron Form and Concentration Affect Nutrition of Container-grown Pelargonium and Calibrachoa , 2006 .

[22]  D. Sparks,et al.  Methods of soil analysis. Part 3 - chemical methods. , 1996 .

[23]  Randal K. Taylor,et al.  Correcting Iron Deficiency in Corn with Seed Row–Applied Iron Sulfate , 2003, Agronomy Journal.

[24]  A. Assimakopoulou.  Effect of iron supply and nitrogen form on growth, nutritional status and ferric reducing activity of spinach in nutrient solution culture , 2006 .

[25]  C. Clapp,et al.  Mechanisms of plant growth stimulation by humic substances: The role of organo-iron complexes , 2004 .

[26]  R. Graham,et al.  The effect of soil moisture on the tolerance of Lupinus pilosus genotypes to a calcareous soil , 2000, Plant and Soil.

[27]  K. Mengel.  Iron availability in plant tissues — iron chlorosis on calcareous soils , 1994 .

[28]  R. Cáceres,et al.  Relationships between growing media fertility, percolate composition and fertigation strategy in peat-substitute substrates used for growing ornamental shrubs , 2002 .

[29]  J. P. Riley,et al.  A modified single solution method for the determination of phosphate in natural waters , 1962 .

[30]  A. Delgado,et al.  Predicting Iron Chlorosis of Lupin in Calcareous Spanish Soils from Iron Extracts , 2006 .

[31]  M. Ibáñez,et al.  Use of MSW compost, dried sewage sludge and other wastes as partial substitutes for peat and soil , 1998 .

[32]  R. A. Robertson.  Peat, horticulture and environment , 1993, Biodiversity & Conservation.

[33]  Tsakaldimi Marianthi.  Kenaf (Hibiscus cannabinus L.) core and rice hulls as components of container media for growing Pinus halepensis M. seedlings. , 2006, Bioresource technology.

[34]  M. Maftoun,et al.  Influence of FeEDDHA on Iron–Manganese Interaction in Soybean Genotypes in a Calcareous Soil , 2002 .

[35]  V. Barrón,et al.  Use of vivianite (Fe3(PO4)2.8H2O) to prevent iron chlorosis in calcareous soils , 2005, Fertilizer research.

[36]  F. Olivares,et al.  Humic Acids Isolated from Earthworm Compost Enhance Root Elongation, Lateral Root Emergence, and Plasma Membrane H+-ATPase Activity in Maize Roots1 , 2002, Plant Physiology.

[37]  P. Fisher,et al.  Water-Soluble Fertilizer Concentration and pH of a Peat-Based Substrate Affect Growth, Nutrient Uptake, and Chlorosis of Container-Grown Seed Geraniums , 2004 .

[38]  C. Ciavatta,et al.  Compost-based growing media: influence on growth and nutrient use of bedding plants. , 2007, Bioresource technology.

[39]  M. Moreno,et al.  Characteristics of Internal Porosity of Cork Container Media , 1996 .

[40]  V. Barrón,et al.  Long-term effectiveness of vivianite in reducing iron chlorosis in olive trees , 2002, Plant and Soil.

[41]  Adele Muscolo,et al.  Earthworm humic matter produces auxin-like effects on Daucus carota cell growth and nitrate metabolism , 1999 .

[42]  M Abad,et al.  National inventory of organic wastes for use as growing media for ornamental potted plant production: case study in Spain. , 2001, Bioresource technology.

[43]  Correcting Iron Deficiency in Calibrachoa Grown in a Container Medium at High pH , 2003 .