Fruit flies are the common and serious pest of the Guava. The flies lay eggs on the surface of Guava fruits at the color break stage. On hatching, the maggot enters into the guava fruit and feeds on soft pulp. When guava fruits are cut open the white maggots are seen in the flesh. It can be managed by the clean cultivation or sanitation of orchard is important to reduce/ check fruit infestation of fruit flies. Collect and dump deep in the pit the fallen infested guava fruits. Daily cover the fruit with soil and do not leave the pit uncovered for long. Avoid taking rainy season crop. Give two sprays of thiodan 35EC (endosulphan) 2 ml/liter or seven 50 WP (carbaryl) 2g/liter, one before maturity and second at maturity. No spray should be given at the ripening stage during the harvesting of fruit.
ScientificFarmingWeb
What is the best fertilizer for cultivating the pomegranate tree?
The pomegranate tree needs adequate nitrogen for best growth, as nitrogen supports the growth of foliage and production of flowers that eventually set fruit. And can use ammonium sulfate, a high nitrogen fertilizer or a balanced 10-10-10 formula, starting in spring after the pomegranate tree begins to show new growth.
Why mango fruit dropping off occurs?
Mango flowers will set much more fruit than the tree can hold and have significant mango fruit drop. Other reasons for mango fruit dropping off include water stress, poor pollination, disease and insect attack.
Why are the leaves on mango tree turning brown?
Leaves turn brown for several reasons but the main cause is the disease anthracnose. If mainly the tips of the mango leaves are turning brown, it is probably fertilizer burn or saline irrigation water.
What is the serious disease of Mango and how it can be controlled?
The one of the serious diseases of mango is Die back. The disease on the tree can be noticed at any time of the year but it is most conspicuous during October-November. The disease is characterized by drying of twigs and branches followed by complete defoliation, which gives the mango tree an appearance of scorching by fire. Initially, it is evident outward along the veins of plant leaves. The affected leaf turns brown color and its margins roll upwards. This can be accompanied by the exudation of yellowish-brown gum.
It can be controlled by the pruning of the diseased twigs 2 to 3 inches below the affected portion and spraying Copper Oxychloride (0.3%). On infected trees control the disease. The cut ends of the pruned twigs are pasted with Copper Oxychloride about 0.3%.
How mango hopper causes damage and how it can be controlled?
Hoppers are mainly considered as the most serious and widespread pest throughout the country. A large number of nymphs and adult insects’ puncture and suck the sap of tender parts, thereby reducing the vigor of the mango plants. Heavy puncturing and also continuous draining of the sap causes curling and drying of the infected tissue.
It can be controlled by three sprays of about 0.15 % carbaryl or 0.04 Monocrotophos or 0.05 % Phosphamidon or 0.05% Methyl Parathion are effective in controlling the hoppers. The first must be given at the early stage of panicle formation. The second spray at the full-length stage of panicles but before full bloom and then, the third spray after the fruit set at the pea size stage is recommended.
How Integrated pest and disease management is followed in Ginger?
Soil application of Biocontrol agents like T. harzianum and P. flourescence during planting time by 2-5% gives effective control of the diseases. Use good quality rhizome for sowing, disease free seeds from the disease-free area. Before sowing, treat the rhizome in hot water and again in a solution of Bordeaux mixture 1 % for 15 min. Treat rhizome with bio inoculant Pseudomonas fluorescens and Trichoderma harzianum followed by soil application 60 days after planting to reduce rhizome rot. Once the diseases are spotted in the field, take away the affected clumps and drench the soil with Bordeaux mixture 1 % at 15 days interval. Diseased plants must be identified while the crops are in the field. Rhizomes from such plants must not be selected for seed purposes. Mechanical collection and destruction of grubs, larvae, weevils and adult beetle periodically will decrease the incidence of insect pests. If white grub is predominant, apply nimbicidine.
Why are the leaves on the apple tree turning brown?
Fire blight disease often attacks open flowers first, which results in brown flowers and stems. Following this the leaves turn brown and then black and remain on the apple tree throughout the dormant season.
Why are the leaves on the apple tree turning Yellow?
Apple trees normally have glossy, medium green leaves. When leaves turn yellow either the weather has turned cold or the apple tree is suffering from some sort of disease and nutritional deficiencies. Over time, these can result in the yellowing of large numbers of plant leaves, known as chlorosis.