Effects of chitin amendment of soil on microorganisms, nematodes, and growth of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.)

  title={Effects of chitin amendment of soil on microorganisms, nematodes, and growth of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.)},
  author={S. U. Sarathchandra and Robert N. M. Watson and Neil R. Cox and Margaret E. di Menna and J. Anne Brown and Gabriela Burch and F. J. Neville},
  journal={Biology and Fertility of Soils},
Effects of soil amendment with crabshell chitin on the growth of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.), and on populations of soil bacteria, fungi, and plant-parasitic and free-living nematodes were investigated in a pot trial. [] Key Method Five soil samples were collected from Te Puke (Paengaroa Shallow Sand, a Typic Hapludand) and five from Hamilton (Bruntwood silt loam, an Aquic Hapludand), New Zealand.

Chitin Amendment Increases Soil Suppressiveness toward Plant Pathogens and Modulates the Actinobacterial and Oxalobacteraceal Communities in an Experimental Agricultural Field

The data revealed that chitin amendment had raised the suppressiveness of soil, in particular toward Verticillium dahliae, 9 months after the (second) treatment, extending to 2 years following treatment, and major effects of the added Chitin on the soil microbial communities were detected.

Chitin Mixed in Potting Soil Alters Lettuce Growth, the Survival of Zoonotic Bacteria on the Leaves and Associated Rhizosphere Microbiology

This is the first study to investigate the use of soil amendments to control the survival of S. enterica on plant leaves and to enhance the understanding of the response of the rhizosphere microbiome to chitin amendment.

The impact of tall fescue ( Festuca arundinacea ) endophyte ( Neotyphodium spp.) on non target soil micro-organisms

Most characteristics measured showed no differences between E+ and E– samples indicating that the presence of endophytes had no impact on non-target soil micro-organisms, and there were no differences in the functional diversity of rhizoplane micro- organisms due to endophyte.

Plant-parasitic nematodes on pasture in New Zealand

Progress made in white clover breeding programs in New Zealand is summarized and advances in genetic mapping and introgression as they affect resistance to nematodes are examined, together with observations which suggest that root-feeding nematode have little impact on yield and that the animal toxicity associated with Anguina seed galls in Australia is absent.

Effects of the Applications of Chitin and Chitosan on Soil Organisms

Chitin promoted bacterial and fungal abundance, leading to an increase in abundance of free-living soil nematodes that feed on decomposers and the ratio of saturated to unsaturated fatty acids was highest in the chitin-treated soil.

Chitin in strawberry cultivation: foliar growth and defense response promotion, but reduced fruit yield and disease resistance by nutrient imbalances.

Chitin causes positive effects on shoot growth and foliar disease resistance, but caution needs to be taken for nutrient imbalances leading to negative influences on root growth, fruit production and disease susceptibility towards B. cinerea.



Chitinous Materials from Blue Crab for Control of Root-Knot Nematode. I. Effect of Urea and Enzymatic Studies

The efficacy of two chitinous materials derived from blue crab wastes for control of Meloidogyne arenaria was studied in a greenhouse experiment and combination treatments of urea + Clandosan 601 were not phytotoxic.

Chitin Amendments for Control of Meloidogyne arenaria in Infested Soil

The effect of amending soil with chitin on Meloidogyne arenaria (Neal) Chitwood was studied in a greenhouse experiment using silt loam from an infested peanut field and the soil was analyzed for soil enzymic activity and microbial populations.

Chitin and Paecilomyces Lilacinus for Control of Meloidogyne arenaria

Combinations of chitin and P lilacinus amendments are effective for control of M. arenaria and reduce GR values and the number of juveniles/g tomato roots.

Use of chitin for controlling plant plant-parasitic nematodes

Differences in fresh shoot weight between nematode-infected and nematodes-free plants amended with chitin were greater under non-irradiated than irradiated conditions, especially in the second cycle, and a higher level of chitinolytic microorganisms, particularly actinomycetes, was found in the first cycle.

Differences in root and shoot development of tomato (Lycopersicon esculentum L.) varieties across contrasting soil environments

The root and shoot growth of three tomato varieties were compared in either a river-washed sand or an alluvial silty loam, with or without added nutrients, to determine factors influencing root growth and development.

Studies of fungi in pasture soils

Fungi isolated from the surfaces of live roots or root debris were compared for their ability to use a range of compounds as carbon and energy sources, and one isolate of Mortierella alpina was exceptional in not growing on xylose, sucrose, or pectin, and growing poorly on glucose.

Invasion of white clover roots by fungi and other soil microorganisms

It is confirmed that many of the fungi which comprise the diverse microtlora naturally present within white clover roots can invade growing root tissues; some may be potential root pathogens.

Response of white clover cultivars to fertiliser nitrogen

There was a significant difference among cultivars for N tolerance ratio in spring, calculated as N225 divided by the mean of N0 and N25 of clover yield, and Spring Nolerance ratio was not correlated with spring yield or any o...

Effects of nitrogen fertiliser and urine on pasture performance and the influence of soil phosphorus and potassium status

Abstract Pasture responses to 4 levels of urea fertiliser and a cow urine treatment were examined at 3 phosphorus (P) and 2 potassium (K) levels in soil. Urea increased reygrass growth and