Malempati Subhash Sri Sanjay | JNKVV (original) (raw)

Papers by Malempati Subhash Sri Sanjay

Brown leaf spot of tomato caused by Helminthosporium oryzae is an airborne pathogen responsible f... more Brown leaf spot of tomato caused by Helminthosporium oryzae is an airborne pathogen responsible for qualitative and quantitative loss in rice production. It attacks the plant at any growth stage and it appears on the foliage, when there is an epidemic outbreak of disease the use of fungicides was one of the viable method of control. The Strobilurin fungicides are one of the most effective and broad spectrum action against plant diseases. It requires the evaluation of fungicides under in vivo conditions to know its effectiveness, prior to start the spray schedule in field conditions and for developing a cost effective disease management approach. Five bio agents and one new generation fungicide were evaluated against Helminthosporium oryzae under in vivo conditions. Effective inhibition of the mycelial growth of was recorded at 500ppm concentration of Tebuconazole50% + Trifloxystrobin25% WG. Among five biocontrol agents, i.e. Trichoderma viride was effectively followed by Trichoderma harzianum, while Pseudomonas fluorescents was fount least effective.

Materials and Methods The following materials and methods were used during the present investigat... more Materials and Methods The following materials and methods were used during the present investigations. Preparation of soil composite, sandy loam soil for growing the test plant was collected from dusty acre farm of Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur. Soil was thoroughly washed with 3-4 changes of water so as to

Lepidium sativum L. is commonly known as Asalio and Chandrasur. It is belongs to the family brass... more Lepidium sativum L. is commonly known as Asalio and Chandrasur. It is belongs to the family brassicaceae, in english it is known as "Garden Cress''. Its posses Seeds, leaves and roots are economically and medicinally important and it is mainly grown for seeds all over India. Asalio is under commercial cultivation in Madhya Pradesh having more than 25000 ha. Due to increase in demand the area under Chandrasur production is being increased year after year. The whole plant is used for secondary syphilis and tenesmus [15] anti-diarrheal and anti-spasmodic[16] hypoglycemic [7] laxative [23] anti-bacterial [4] antioxidant, contraceptive effects[24] and in inflammatory bowel disease [21]. Among them A. alternata causes severe leaf spot in the northern Indian plains. Alternaria leaf spot disease symptoms in L. sativum are characterized by the appearance of brown necrotic spots on the leaf margin. The necrosis spreads towards the midrib and as a result the leaf curls up and dries, affecting the herb yield. Host Selective Toxins (HST) function as essential determinants of pathogenicity or virulence; Alternaria producing the most important and well known HSTs [12]. The HST group comprises a limited number of phytotoxins that meet the following criteria: (i) the toxin and its producer have similar host specificity; (ii) the virulence of the pathogenic strains is positively correlated to their capacity to produce the toxin and (iii) the toxin is able to produce, in susceptible plants, symptoms characteristic of the disease caused by the pathogen [12]. HSTs are toxic to plant species or cultivars susceptible to the pathogens producing these toxins and there is a correlation between sensitivity to the toxin and susceptibility of the plant to the pathogen [14]. Therefore, organic solution for such menace is indispensible for retaining the therapeutic value of the crop along with higher yield. Phosphorus-solubilizing microorganisms (PSMs) are abundantly available in the rhizosphere of plants [29] where they compete with other organisms for nutrient and space and in-turn provide nutrient for growth and protection from deleterious microorganism. Many studies have shown an increase in growth and P-uptake by plants through the inoculation of PSMs (one of the component of PGPF) in pot experiments [28] and as well as in field conditions[26].The antagonistic fungi, Aspergillus are a common genus in most agricultural fields of India and are ubiquitous fungus with no specific moisture and pH requirements. Therefore, the present investigation was undertaken to overcome the menace of this pathogen, the Plant Growth Promoting Fungi (PGPF) with special reference to Aspergillus awamori isolates have been used to manage the disease.

Supply chain management aims at to link the producer and consumer, which includes traditional mar... more Supply chain management aims at to link the producer and consumer, which includes traditional marketing channels. The present paper is intended to make aware about the model of supply chain management. This article helps in knowing concept of contract farming and relationship between processing firm and farmers in the villages around the plant. Study concludes that contract farming helpful to small farmers in the tuff times of product sale at the bulk production period. But on the other hand contract faming provides a more reliable, regular and timely sources of income to farmers. Broadly speaking, it suggested that for the successful implementation of contract farming there should be appropriate coordination between the farmers and buyers both acting in organized manner and advisable for both sides.