However danger lurks in every corner of the garden with a whole host of beastly pests and diseases ready to indiscriminately strike down your plants at a … Question: what are the effects of pests and diseases in the vegetable garden? Agriculture Pest/Disease Surveillance : Collaborative Portal on Bhuvan, an initiative by NRSC/ISRO allows users to share, access and upload the pests and disease related information in a near real time basis. Virus diseases are spread by sucking insects such as aphids and leafhoppers. - Get information on all symptoms, triggers, and treatments for the major agricultural crops Officials said, VBN-6 black gram variety is highly resistant to yellow mosaic virus disease, a dreaded disease in summer black gram which affects the yield drastically, has synchronized flowering and pod setting and comes to harvest in 70 days. So, you've bought (or saved) your seeds, carefully planted them and provided the optimum growing conditions. They can be found inside the flower, this is often the first infestation of spring, on new and under old leaves. Small, round reddish-brown pustules appear on the underside of leaves. Usually, the leaf size is not affected. Now, let’s look at the common cacti diseases and pests. Introduction to Beans pests and diseases. 15. PESTS OF PULSES - BLACK GRAM, GREEN GRAM, LABLAB AND COWPEA One of the major constraints for low yield of pulse crop is the extensive damage caused by insect pests. The lower leaves show yellowing, drooping and premature defoliation. The major pests of the former pulse were Empoasca kerri Pruthi (Amrasca kerri), Diachrysia orichalcea (F.) (Plusia orichalcea) and Phytomyza horticola Goureau (atricornis auct.) Pests like aphids can also cause curling, but if you can't see the insects, then it is the disease. Until early nineties large quantities of black gram were exported to various countries and no importation were recorded. While these notes focus on pests and diseases of cacti and succulents, incorrect cultural conditions are a major cause of poor growth or loss of house plants in general. Pests & Diseases affecting chilli peppers. The plant A black, powdery fungus, feeding off the sugar excretions of these pests, begins on softer growth and quickly spreads to older foliage, stems and trunks. The disease affects the leaves, stems, pods, seeds, hypocotyls and roots.The reddish brown leaf lesions are round to irregular varying from specks to mature spots.A dull green or yellowish green halo commonly surrounds the lesions, which often become concentrically ringed at maturity–hence the name target spot.Severely infected leaves fall prematurely. This also results in very few pods and possible disease contagion such as pea leaf roll and mosaic virus. Diseases of Black gram Powdery mildew - Erysiphe polygoni Symptoms Small, irregular powdery spots appear on the upper surface of the leaves, sometimes on both the surfaces. Infested buds may not open and flowers may be deformed exhibiting water soaked spots. They feed on the plant tissue by sucking the sap from leaves, stalks and stems, which can result in stunted plant growth, defoliation, and even death of the plant. ... Look for small metallic black specks on the top of leaves. The single commonest cultural problem is over-watering, with the roots left wet for excessively long periods resulting in rotting. Yersinia pestis (formerly Pasteurella pestis) is a gram-negative, non-motile, rod-shaped, coccobacillus bacterium, without spores. Pests of Pea Plants. Some common species of scale insects in Australia are pink wax scale, black scale, soft brown scale and citrus red scale. Most cacti diseases are caused by bacteria, viruses, fungi and other microorganisms. 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