Onion seed production | onion seed farming :- Soil and climate requirements :- Well drained medium to heavy soil. PH range of 6.5 to 7.5 are good for onion seed production. Flowering initiation in onion takes place at a comparatively cooler temperature(15 - 25 degree celcius). Higer temperature are favourable only for seed ripening and maturity. Low temperature at the time of bulb planting (nov - dec). Moderate temperature during stalk development, flowering and seed setting (january - feb). Warm temperature at seed maturity and drying (march - april). Field preparation and planting :- A deep ploughing and incorporation of well decomposed FYM @ 20t per hectare creates good soil tilth. Ridges and furrows are common planting method. Selection of mother bulb :- The 5m distance should be maintain from other onion field for avoiding contamination of bulbs of another variety. Harvest of rabi season already catches enough resting period, but the bulb harvested in kharif need to give a resting...
Phytophthora Blight Phytophthora infestans in potato causes Late blight The most common species is p.infestans (the casual organisms of late blight of potato) important species of phytophthora are p. Colocasine on colocasia(kachalu) p. Areca on arica nuts, p. Parasitica on castor seedlings(supaari), p. Cinnamoni(on conifers), p.citrophthor (causing brown rot on lemons). How to know that water is infested with phytophthora fungus:- Phytophthora fungus loves hemp seed so for knowing that the water have part of the fungus, we use sterilized hemp seeds as host to catch phytophthora capsici zoospores. When phytophthora Fungus attached from hemp seeds then we tested it in lab, for knowing their presence. Phytophthora blight In pumpkin🎃 Symptoms Of phytophthora blight :- Phytophthora infestans is responsible for causing late blight and root rot of potatoes. it is one of the most serious and most common disease of potatoes. the symptoms can be seen on any part of the plant. On The leaves...