Management of Root-Knot Disease in Phaseolus vulgaris Using Potassium Fertilizer and Biocontrol Agents

Rushda Sharf Hisamuddin

doi:10.4172/2157-7471.1000242

Abstract

The experiment was conducted to determine the effect of different doses of potassium fertilizer (K2O) along with the biofertilizers, Trichoderma harzianum, and Pochonia chlamydosporia, in the management of the root-knot disease caused by the root-knot nematode (Meloidogyne incognita) and on the growth and physiological parameters of Phaseolus vulgaris. From the result it was observed that the application of potassium along with biofertilizers in the treatment T-7 in which plants were treated with double dose of potassium along with both fungal biocontrol agents and root-knot nematode, improved all the growth as well as biochemical parameters viz, chlorophyll, protein, nitrate reductase, nitrogen and phosphorus contents and reduced the number of galls per root system in comparison to the control and other treatments.

Highlights

The red kidney bean (Phaseolus vulgaris) is one of the most important leguminous plants worldwide and is the highly relished pulse grain in Northern India
The objective of this work was to study the effect of different doses of potassium in combination with biofertilizers (Trichoderma harzianum, and Pochonia chlamydosporia) on the growth of plant infected with root-knot nematode
The root-knot nematode, Meloidogyne incognita was selected as the test pathogen; Trichoderma harzianum and Pochonia chlamydosporia as the test biocontrol agents, which were added into the soil together with the potassium fertilizers for the control of root-knot nematode on kidney bean, Phaseolus vulgaris the experiment was performed in glass house

Summary

Introduction

The red kidney bean (Phaseolus vulgaris) is one of the most important leguminous plants worldwide and is the highly relished pulse grain in Northern India. Trichoderma can promote the plant growth, increase phosphate solubility and availability of micronutrients in the soil [10]. Pochonia chlamydosporia is another nematophagous biological control agent, which can infect the nematode eggs, larvae and ingest adult, and is used for egg parasitism of Meloidogyne sp [11]. It acts as true endophyte, colonizing the plant root of many crops such as tomato and barley [12,13]. Endophytic colonization by P. chlamydosporia provides the protection of host plant against different soil pathogen such as nematode and fungi, promote the plant growth by facilitating the soil nutrient uptake [14,15]

Objectives

Methods

Findings

Conclusion