Abstract:
ABSTRACT
The present study was conducted in Sher-e-Bangla Agricultural University (SAU) during
Boro season 2019-2020.The pot experiment was conducted in net house with CRD
design and the field experiment was conducted in central farm of SAU with RCBD
design. To conduct the experiments BRRI dhan 28 was used as a cultivar and in total six
compounds viz. salicylic acid (T
1
), potassium silicate (T
2
), silica gel (T
), P cattle urine
(T
4
), Peak Performance Nutrient (T
5
), N-cattle urine (T
) were selected to develop
induced resistance system in rice plant. From the study, it was revealed that all of the
selected novel chemicals showed some extent effectiveness over control to develop the
resistant system in rice plant upon artificial inoculation of pathogen in pot and natural condition.
Among the selected novel chemicals, cattle urine gave better result to develop the induced
resistant system in rice plant upon artificial inoculation as well as in foliar spray. Potassium
silicate (@ 4gL
-1
6
) and PPN (@ 8 gm/L) also gave the satisfactory result and plants showed
resistance against blast pathogen. Silicon (Si) is known as a ―beneficial element‖ for plants.
The direct and indirect benefits of the element for crops (especially grasses) are related to
resistance to diseases, pests a drought that again proved from the current study. In this
study, yield and yield contributing character like tiller number, panicle mass, plant height
(cm) and grain yield (kg) were also studied. Satisfactory results were found in case of
treatment cattle urine and potassium silicate. However, it may be concluded that
compounds like animal bio-products and silicon containing chemicals can be used to
develop resistance system in rice plant against blast pathogen.
3
Description:
A Thesis Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE
IN PLANT PATHOLOGY
SEMESTER: JANUARY – JUNE, 2021
