3 edition of Freezing injury of root crops found in the catalog.
Freezing injury of root crops
Chester Swan Parsons
by U.S. Agricultural Research Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington]
Written in English
Includes bibliographical references.
|Statement||[by C. S. Parsons and R. H. Day.|
|Series||Marketing research report no. 866, Marketing research report ;, no. 866.|
|Contributions||Day, R. H. 1925- joint author.|
|LC Classifications||HD1751 .A9183 no. 866|
|The Physical Object|
|Number of Pages||24|
|LC Control Number||76609345|
On the other hand, cold injury can ruin the crop, and roots without leaf cover are exposed to cold air temperatures, and have lost their method of pulling water up out of the soil. Cold wet soil can quickly rot sweet potatoes (I know, it’s happened here). due to freezing in the root zone. That injury is known as 'winterkill'. The symptoms are leaf discoloration and eventual drop. Such injury can occur within 3 days if the root zone is frozen to a depth of 4 inches, air temperature is below freezing, and strong winds (10 mph or greater) occur. Injury is prevented by a winterAuthor: Carolyn J. DeMoranville.
Root-knot nematodes „ _ _ ^-. 59 Insect injuries 60 Hopperburn - 60 Psyllid yellows -» 60 Abiotic diseases. 61 Air pollution damage ^ 61 Blackheart ^ - 62 Enlarged lenticels ^ 63 Feather and scald 63 Fertilizer burn --_. -__„. 63 Freezing, frost or freezing necrosis, and low-temperature injury 64 Heat and drought necrosis - - Root development - Water and nutrient absorption - Pests and disease occurrence. Extremes of temperatures - Frost damage at 0 °C - Chilling injury 0 - 2 °C or lower but above freezing point. Light. Photosynthesis uses light. Light intensity and duration are important for crop growth and development. SPECIES OF ROOT-KNOT NEMATODES Meloidogyne hapla — Northern root-knot nematode This is the most common root-knot nematode found in Illinois and other northern soils. Unlike most other root-knot nematode species, M. hapla withstands freezing temperatures, thereby allowing it to survive cold northern winters outdoors.
Cover-crops are used. 1. To prevent the loss of soluble plant-food, which occurs when the lands are left uncovered during the late fall and winter; 2. To prevent the galling or surface erosion of hillsides or slopes by winter rains; 3. To prevent root injury by excessive freezing of orchard lands; 4. To supply humus; 5. At freezing temperatures, water in the intercellular spaces of plant tissue freezes first, though the water may remain unfrozen until temperatures drop below −7 °C (19 °F). After the initial formation of intercellular ice, the cells shrink as water is lost to the segregated (unranked): Diaphoretickes. Comparative responses of field grown crops to phosphate concentrations in soil solutions. Production of food plants in areas supplied with highy saline water: problems and prospects. Salt resistance in agricultural crops. Effects of freezing and cold acclimation on membrane structure and function. Cold resistance and injury in winter cereals.
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SyntaxTextGen not activatedpdf plant is killed by injury to the growing point, which turns from a white, turgid pdf to a brown, wilted appearance after it is frozen.
Leaves often stay green during mild winters, but freezing or “burning” of leaves by cold has little effect on yield. Tillering Warming temperatures in late winter cause wheat toFile Size: KB.For several years,my friend and neighboring grower Download pdf Bezilla of Southern Exposure Seed Exchange and I have been keeping records of how well our crops do in the colder season.
Ken provided much of the original information, and has suggested the morbidly named Death Bed idea: set aside a small bed and plant a few of each.Chilling stress and injury is experienced ebook chilling-sensitive plants when temperatures decrease below the photosynthetic optimum, but are still above freezing.
In plants which are not cold tolerant, injury and responses to chilling are typically induced at the range of 10–15 °C.