Corn (Zea Mays L.) and Cover Crop Response to Corn Density in an Interseeding System and Subsequent Dry Bean (Phaseolus Vulgaris L.) Yield PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Corn (Zea Mays L.) and Cover Crop Response to Corn Density in an Interseeding System and Subsequent Dry Bean (Phaseolus Vulgaris L.) Yield PDF full book. Access full book title Corn (Zea Mays L.) and Cover Crop Response to Corn Density in an Interseeding System and Subsequent Dry Bean (Phaseolus Vulgaris L.) Yield by Dieudonné Nkundizana Baributsa. Download full books in PDF and EPUB format.
Author: Dieudonné Nkundizana Baributsa
Publisher:
ISBN:
Category : Common bean
Languages : en
Pages : 360
Get Book Here
Book Description
Author: Dieudonné Nkundizana Baributsa
Publisher:
ISBN:
Category : Common bean
Languages : en
Pages : 360
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 924
Get Book Here
Book Description
Author: Aaron Patrick Brooker
Publisher:
ISBN: 9781085652346
Category : Electronic dissertations
Languages : en
Pages : 331
Get Book Here
Book Description
Farmers could enhance crop diversity in their farming systems by interseeding cover crops in corn in late May and June in corn rotations in the Upper Midwest. Recommendations must be developed for cover crop species, seeding rates, and interseeding timings that optimize cover crop growth and enhance corn production. Weeds must be controlled, and cover crops must establish in this system. Cover crops influence soil health in long term studies; however, the influence of interseeded cover crops on soil enzymes, soil structure, and nutrient cycling has not been reported. In Michigan, two experiments were conducted from 2015-2017 and one experiment from 2017-2019. In the first experiment, annual ryegrass, crimson clover, oilseed radish and a mixture of the three species were broadcast interseeded at each of the V1 through V7 corn stages at a single seeding rate. Cover crop and weed density and biomass were measured during the growing season, at the time of corn harvest, and the following spring. Soil samples were taken in the spring in the year following interseeding and analyzed for inorganic N, extracellular enzyme activity, and aggregate stability. Corn was planted as an indicator crop and sampled for C and N content. In the second experiment, preemergence (PRE) and postemergence (POST) herbicides were applied, and cover crops interseeded at the V3 and V6 corn stages. Cover crops were evaluated in October for injury and stand loss. A greenhouse trial was also included to evaluate cover crop response to herbicides. In the third experiment, the same three cover crop species and a mixture of annual ryegrass and crimson clover were interseeded at three seeding rates in V3 and V6 corn. Establishment, biomass, and corn grain yield were collected using the same methods as previously described. Eight on-farm locations were interseeded with the same cover crop species at the 1X rate at the V3 and V6 corn stages. All plots were flown with a fixed-wing aircraft to measure canopy temperature. Small-plots were flown with UAV to acquire multispectral imagery to determine NDVI and NDRE. In years with normal or below normal precipitation, annual ryegrass and oilseed radish produced the highest biomass. Establishment improved when seeding on tilled soil compared with no-till soil. All cover crop species established, regardless of tillage, with above normal rainfall. Both annual ryegrass and crimson clover established when interseeded as a mixture at the seeding rates used. Increasing seeding rates usually increased biomass production. Cover crops could be interseeded at any time from V1-V7 corn if weeds were controlled. No cover crop species was competitive with summer annual weeds; annual ryegrass was the only species that overwintered and suppressed winter annual weeds. There were PRE and POST options for weed control with all cover crop species, but farmers must be mindful of herbicide and cover crop combinations. Delaying interseeding until V6 may reduce injury from some PRE herbicides. In the year of interseeding, cover crops did not reduce corn grain yield; therefore, remote imagery was not able to detect changes in corn health. Remote imagery detected cover crop establishment in the V3 interseedings prior to corn canopy closure; remote imagery did not detect less thermal stress where cover crops were interseeded. Annual ryegrass plots had reduced spring inorganic N content, and this sometimes translated to reduced N in the indicator corn crop. Success of broadcast interseeded cover crops is highly depended on adequate precipitation; this practice would be especially successful where summer rainfall is consistent or in irrigated systems. Benefits of cover crops are likely to be realized over multiple years of interseeding; farmers must balance goals of cover cropping with costs of seeding when selecting species, seeding rates, and weed control options.
Author: Angela M. Bastidas
Publisher:
ISBN: 9780355684018
Category : Corn
Languages : en
Pages : 0
Get Book Here
Book Description
Fall-seeded cover crops are limited by the short growing season remaining between harvest and planting the succeeding crop. To address this challenge, we considered two alternative systems for introducing cover crops into corn (Zea mays L.)- soybean (Glycine max L.) cropping systems. The first alternative was to interseed the cover crops species with corn at specific developmental stages. We evaluated the effect on corn, cover crop biomass, and the subsequent soybean crop. No detrimental effects on corn were found when cover crops were interseeded at or after corn canopy closure due to the limited cover crop biomass produced during the growing season. However, corn was negatively affected with cover crops interseed at corn planting. Cover crops interseeded at canopy closure did not establish due to corn canopy shading. Cover crops interseeded at or after R5 (dent) produced greater biomass the following spring than in the fall, and cover crops interseeded at R5 and R6 (physiological maturity) produced greater biomass than cover crops interseeded at corn harvest. This indicated that the interseeding by broadcasting cover crops can be successful for improving biomass production. The second alternative was to modify corn management practices such as planting date, plant population, and comparative corn relative maturity (CRM) to allow earlier cover crop seeding dates. We attempted to understand the impact on corn yield, cover crop biomass production, and the subsequent soybean crop. Early- and early-to-medium-maturity hybrids allowed corn harvest about one month earlier and medium-maturity hybrids about 15 d earlier than late-maturity hybrids. No differences in corn yield were observed between the medium- and late-maturity hybrids planted at the earlier planting date, with a 107 CRM hybrid planted early having the highest yield of 16.0 Mg ha-1. The greatest cover crop biomass production occurred with the earliest cover crop planting date. Cover crop biomass increased with air temperature, which was measured with growing degree days (GDDC). This indicates that changes in planting date and corn CRM hybrids are important to increase the potential for use of cover crops. The subsequent soybean yield was not affected by cover crops in either alternative.
Author: Wilson Tombozgani Gondwe
Publisher:
ISBN:
Category :
Languages : en
Pages : 456
Get Book Here
Book Description
Author: Gregorio Jacob Soto-Guevara
Publisher:
ISBN:
Category :
Languages : en
Pages : 270
Get Book Here
Book Description
Author: Marjorie Louise Townsend
Publisher:
ISBN:
Category :
Languages : en
Pages : 350
Get Book Here
Book Description
Hairy vetch (Vicea villosa Roth) and medium red clover (Trifolium pratense L.) were overseeded into corn (Zea mays L.) after the last cultivation. A high and a low seeding rate were used of each cover crop. Yields of corn and dry matter production of cover crops were measured in the cover crop establishment year. Corn was removed in some treatments to simulate silage harvest. Cover crop dry matter was again measured the following spring. Precipitation was below the long term average in all site years; about 83% of average 1993, and about 67% in 1994, and greatly influenced corn and cover crop yields. There were no significant differences in any site years between the corn yields of the four different cover crop treatments. Although there were often differences in cover crop dry matter production in October of the establishment year, there were never differences in the corn yields associated with the different cover crop treatments. Both hairy vetch seeding rates yielded more dry matter and nitrogen than both clover seeding rates. The high vetch seeding rate generally yielded more than the low vetch seeding rate in the fall of the establishment year, but there was no difference the following spring. There was generally no difference in dry matter production between the red clover seeding rates in the fall, but the high clover seeding rate yielded more than the low clover seeding rate the following spring. Cover crop spring dry matter yields were higher where corn had been removed the previous fall to simulate silage harvest than where corn had been harvested for grain. In the second year, corn was no till planted into killed cover crop residue, and corn yields measured in the fall of the second year. The cover crops apparently depleted soil moisture before corn planting, and exacerbated continuing low soil moisture levels. Corn yields in all cover crop treatments were very low at Hoytville, both when fertilizer nitrogen (FN) was added and when it was not. When no FN was added, corn yields at S. Charleston were lowest when corn was planted into vetch residue. When FN was added, corn yields were highest in the vetch treatments.
Author: Brent Edward Tharp
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 156
Get Book Here
Book Description
Author: Kerry Alan Locke
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 194
Get Book Here
Book Description
Author: Alex D. Bich
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 276
Get Book Here
Book Description
