3 天之前 · Soil crusting is a problem that can occur after soybean planting before the soybeans have emerged. Soybeans have epigeal emergence; this means that the hypocotyl arch needs to pull the cotyledons through the soil surface and unfavorable soil …

Soil crusting occurs when a hard layer forms on tilled soils after a rain event. Crusting may limit a soybean emergence, and as a result, plants may be bent or twisted, have broken hypocotyls, or potentially die.

2018年5月10日 · Soil crusting reduces soybean emergence, oxygen diffusion and water infiltration, and increases soil erosion. Producers should identify which fields are most likely to form a crust and develop proactive strategies for improving soybean emergence in these fields.

2012年5月18日 · Some soybeans have been in the ground for two weeks and in many cases, are fairly healthy below the crust. Soybean seedlings emerge by pulling (not pushing) their cotyledons upward. The seedlings rely on the cotyledons as a reserve source of carbohydrate, protein, and lipid to support early seedling development until leaflets open for ...

2019年6月14日 · Soil crusting is challenging soybean emergence, but is it enough to warrant replanting? Here are early steps to remediate crusting problems and factors to consider when considering replanting.

2024年9月3日 · Soil crusting can occur due to structural degradation at the soil surface, after a heavy rain event, or limited rainfall. Symptomology associated with soil crusting can include uneven soybean emergence, swelling of the hypocotyl, physical crust or cracking along the soil surface, reduced water infiltration, an increase in soil erosion, and ...

2021年7月7日 · Soil crusting can occur when a crust layer forms on the soil surface as wet soils dry. The crust layer can delay or prevent seedling emergence. In addition, soybean hypocotyls can easily be broken when trying to push through the crust.

1983年7月1日 · In the monsoon climate of Northern India, surface crusting due to untimely rain following the planting of wet season soybeans (June--July) is a serious problem which can result in partial or total failure of germination and emergence.

1983年7月1日 · Soil crust strength and impedance to seedling emergence have been studied in detail and measures to avoid crusting and methods to ameliorate its adverse effects have been suggested. The findings of such studies are summarized in this paper.

1983年5月1日 · A miniplot (61 × 61 cm 2) field trial was conducted on a silty clay loam Mollisol to establish the effect of soil aggregate size on the pattern of soil crusting and on soybean seedling emergence. Seedbeds of different aggregate size were prepared by dry sieving.