Winter Cereal Cover Crop Removal Strategy Affects Spring Soil Nitrate Levels

2007 ◽  
Vol 29 (3) ◽  
pp. 55-67 ◽  
Author(s):  
M. R. Jewett ◽  
K. D. Thelen
Author(s):  
Amir Sadeghpour ◽  
Oladapo Adeyemi ◽  
Dane Hunter ◽  
Yuan Luo ◽  
Shalamar Armstrong

Abstract Growing winter cereal rye (Secale cereale) (WCR) has been identified as an effective in-field practice to reduce nitrate-N and phosphorus (P) losses to Upper Mississippi River Basin, USA. In the Midwestern USA, growers are reluctant to plant WCR especially prior to corn (Zea mays L.) due to N immobilization and establishment issues. Precision planting of WCR or ‘skipping the corn row’ (STCR) can minimize some issues associated with WCR ahead of corn while reducing cover crop seed costs. The objective of this study was to compare the effectiveness of ‘STCR’ vs normal planting of WCR at full seeding rate (NP) on WCR biomass, nutrient uptake and composition in three site-yrs (ARC2019, ARC2020, BRC2020). Our results indicated no differences in cover crop dry matter biomass production between the STCR (2.40 Mg ha−1) and NP (2.41 Mg ha−1) supported by similar normalized difference vegetative index and plant height for both treatments. Phosphorus, potassium (K), calcium (Ca) and magnesium (Mg) accumulation in aboveground biomass was only influenced by site-yr and both STCR and NP removed similar amount of P, K, Ca and Mg indicating STCR could be as effective as NP in accumulating nutrients. Aboveground carbon (C) content (1086.26 kg h−1 average over the two treatments) was similar between the two treatments and only influenced by site-yr differences. Lignin, lignin:N and C:N ratios were higher in STCR than NP in one out of three site-yrs (ARC2019) indicating greater chance of N immobilization when WCR was planted later than usual. Implementing STCR saved $8.4 ha−1 for growers and could incentivize growers to adopt this practice. Future research should evaluate corn response to STCR compared with NP and assess if soil quality declines by STCR practice over time.


2022 ◽  
Vol 325 ◽  
pp. 107750
Author(s):  
Jared Lapierre ◽  
Pedro Vitor Ferrari Machado ◽  
Zachary Debruyn ◽  
Shannon E. Brown ◽  
Sean Jordan ◽  
...  

2020 ◽  
Vol 49 (5) ◽  
pp. 1298-1309 ◽  
Author(s):  
Jessica F. Sherman ◽  
Eric O. Young ◽  
William E. Jokela ◽  
Jason Cavadini

Crop Science ◽  
2006 ◽  
Vol 46 (4) ◽  
pp. 1682-1691 ◽  
Author(s):  
K. V. Dhima ◽  
I. B. Vasilakoglou ◽  
I. G. Eleftherohorinos ◽  
A. S. Lithourgidis

2006 ◽  
Vol 98 (5) ◽  
pp. 1290-1297 ◽  
Author(s):  
I. Vasilakoglou ◽  
K. Dhima ◽  
I. Eleftherohorinos ◽  
A. Lithourgidis

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 428c-428
Author(s):  
Juan Carlos Gilsanz ◽  
D. C. Sanders ◽  
G. D. Hoyt

Rye plus crimson clover cover crops were followed by spring potato and fall snap bean or sorghum or fallow. The soil samples at 15 cm increments to 90 cm were evaluated for nitrate levels after each crop and cover crop. After the cover crops, soil nitrate levels were reduced relative to the fallow area. After the potato, crop soil nitrate levels increased above initial spring levels due a uniform fertilization due to the amount of N applied and short cycle of the crop. Snap beans and sorghum had increased plant stands and reduced soil impedance after fall cover crops. HOW nitrate levels varied with soil depth and time will be discussed.


Plant Disease ◽  
2020 ◽  
Vol 104 (3) ◽  
pp. 677-687 ◽  
Author(s):  
Jyotsna Acharya ◽  
Thomas B. Moorman ◽  
Thomas C. Kaspar ◽  
Andrew W. Lenssen ◽  
Alison E. Robertson

The effects of winter cover crops on root disease and growth of corn and soybeans are poorly understood. A 3-year field experiment investigated the effect of winter cereal rye (Secale cereale L.) and winter camelina (Camelina sativa [L.] Crantz), used either in all three years or in rotation with each other, on corn (Zea mays L.) and soybean (Glycine max. [L.] Merr.) growth, root disease, and yield. Corn following a cover crop of camelina had reduced root disease, a lower Pythium population in seedling roots, and greater growth and yields compared with corn following a rye cover crop. Camelina and rye cover crops before soybean had either a positive or no effect on soybean growth and development, root disease, and yield. Moreover, Pythium clade B populations were greater in corn seedlings after a rye cover crop compared with those following a camelina cover crop, whereas clade F populations were greater on soybean seedlings following a camelina cover crop compared with seedlings following a rye cover crop. A winter camelina cover crop grown before corn had less-negative effects on corn seedling growth, root disease, and final yield than a winter rye cover crop before corn. Neither cover crop had negative effects on soybean, and the cover crop in the preceding spring had no measurable effects on either corn or soybean.


2005 ◽  
Vol 19 (3) ◽  
pp. 731-736 ◽  
Author(s):  
D. Wayne Reeves ◽  
Andrew J. Price ◽  
Michael G. Patterson

The increased use of conservation tillage in cotton production requires that information be developed on the role of cover crops in weed control. Field experiments were conducted from fall 1994 through fall 1997 in Alabama to evaluate three winter cereal cover crops in a high-residue, conservation-tillage, nontransgenic cotton production system. Black oat, rye, and wheat were evaluated for their weed-suppressive characteristics compared to a winter fallow system. Three herbicide systems were used: no herbicide, preemergence (PRE) herbicides alone, and PRE plus postemergence (POST) herbicides. The PRE system consisted of pendimethalin at 1.12 kg ai/ha plus fluometuron at 1.7 kg ai/ha. The PRE plus POST system contained an additional application of fluometuron at 1.12 kg/ha plus DSMA at 1.7 kg ai/ha early POST directed (PDS) and lactofen at 0.2 kg ai/ha plus cyanazine at 0.84 kg ai/ha late PDS. No cover crop was effective in controlling weeds without a herbicide. However, when black oat or rye was used with PRE herbicides, weed control was similar to the PRE plus POST system. Rye and black oat provided more effective weed control than wheat in conservation-tillage cotton. The winter fallow, PRE plus POST input system yielded significantly less cotton in 2 of 3 yr compared to systems that included a winter cover crop. Use of black oat or rye cover crops has the potential to increase cotton productivity and reduce herbicide inputs for nontransgenic cotton grown in the Southeast.


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