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Capsule development complete; seeds pale 8: Ripening of fruit and seed 81: 801: Beginning of ripening: 10% of capsules ripe 85: 805: First capsules bursting 89: 809: Fully ripe: seeds black and hard 9: Senescence 92: 902: Leaves and shoots beginning to discolour 95: 905: 50% of leaves yellow or dead 97: 907: Plants or above ground parts dead 99 ...
A seed rate of about 100 kg of seed per hectare (2 bushels per acre) is typical, though rates vary considerably depending on crop species, soil conditions, and farmer's preference. Excessive rates can cause the crop to lodge, while too thin a rate will result in poor utilisation of the land, competition with weeds and a reduction in the yield.
The seed ratio is another way of calculating yields. Cereal yield in tons per hectare and kilograms of nitrogenous fertilizer applied per hectare of cropland. Innovations, such as the use of fertilizer , the creation of better farming tools, and new methods of farming and improved crop varieties have improved yields.
Onions are a cool-weather crop and can be grown in USDA zones 3 to 9. [67] Hot temperatures or other stressful conditions cause them to "bolt", meaning that a flower stem begins to grow. [68] Onions are grown from seeds or from partially grown bulbs called "sets" or starter bulbs. Onion seeds are short-lived and fresh seeds germinate more ...
The potato onion (also known as an Egyptian onion, underground onion [1] or multiplier onion) [2] is a group of varieties [3] which Maud Grieve calls Allium × proliferum [1] but has also been classed in the Aggregatum Group of Allium cepa, similar to the shallot. [3]
Stocking measures account for three things: the cover type and species mixture in the stand, the basal area per acre, and the number of trees per acre. [3] Stocking allows for comparing stands that may have diverse ecology. [4] Stocking is a major part of forest management, both in commercial applications and for restoration or preservation.
There are dozens of cultivars of the onion (Allium cepa), one of the most widely cultivated species of the genus Allium, But there are also other species cultivated as 'onions'. Many are named after the first person to breed them, or the locality they came from.
Allium ochotense, or the Siberian onion, [3] is a primarily East Asian species of wild onion native to northern Japan, Korea, China, and the Russian Far East, as well as on Attu Island in Alaska. [ 1 ]