1.

Project Code

:

-

2.

Title

:

Control of mulberry diseases.

3.

Investigators

:

Mandal SK, Biswas S, Teotia RS, Elangovan C, Pratheesh Kumar PM, Gangwar SK, Qadri SMH

4.

Project period

:

1991-1996

5.

Institute/ University

:

CSR&TI, Barhampore

6.

Project cost

:

-

7.

Objectives

• Screening of germplasm for resistance to mulberry diseases.
• Identification of suitable fungicides for control of mulberry diseases.
• Study the effect of foliar nutrition on the incidence of mulberry diseases

8.

Important findings

162 mulberry germplasm accessions (exotic 90 and indigenous 72) screened against foliar diseases under natural conditions. Accessions Ankara, Goseorami, Oshima and Kokuso were resistant to leaf spot, Ankara, Kosen, M. laevigata and Thiland lobed to powdery mildew and Berhampore-A, Catteneo, Kokuso, M. laevigata, Lemonciana, Moretiana, M. tiliafolia and Serpentina to leaf rust and remaining all accessions were found susceptible to all these diseases.

Ten high yielding mulberry genotypes, C763, C776, C-1726, C1729, C1730, S799, S1635, S1, Tr4, Tr10, were screened against powdery mildew leaf spot and leaf rust. None of the genotype was found immune or resistant to any of the diseases except S799 which was found resistant to powdery mildew.

Carbendazim at 0.075%was found effective for control of powdery mildew and leaf spot and 0.2% copper oxy chloride for leaf rust.

Foliar application of 0.5% NK and 2% tracel followed by NP (10+0.5 a.i.) twice at 3 week interval minimised leaf rust and leaf spot by 78% and 84% respectively.