EVALUATION OF NITROGEN APPLICATION METHODS AND RATES WITH NUTRISPHERE-N ON CORN IN SOUTHEASTERN COASTAL PLAINS

Pawel Wiatrak

doi:10.3844/ajabssp.2014.109.118

Article Details

EVALUATION OF NITROGEN APPLICATION METHODS AND RATES WITH NUTRISPHERE-N ON CORN IN SOUTHEASTERN COASTAL PLAINS

Authors:

Pawel Wiatrak

Publisher:

Science Publications

Journal:

American Journal of Agricultural and Biological Sciences Vol.9 Issue 1, pp.109-118

Document Type:

Article

Publication Date:

4/2014

Document Language:

English

Document ID (Org No.):

2001395990

pISSN:

1557-4997

DOI:

10.3844/ajabssp.2014.109.118

Keywords:

Abstract:

 Application method of Nitrogen (N) and Nutrisphere-N may influence corn (Zea mays L.) growth and yields under dryland conditions. The objective of this study was to determine the effect of two N application methods (all at planting and split application with 35 kg N ha-1 applied at planting and remaining N at V6 stage) and five N rates (0, 45, 90, 135 and 180 kg N ha-1) with and without Nutrisphere-N polymer on dryland corn near Blackville, SC from 2010 to 2012. Compared to control, Nutrisphere-N polymer improved corn grain yield by 33.3 and 29.5% at 90 and 135 kg N ha-1 applied at planting and 12.1, 12.9, 22.0 and 31.2% at 45, 90, 135 and 180 kg N ha-1 applied in split applications, respectively. Chlorophyll improved in corn leaves by 19.3% at 8 weeks after planting with application of 45 kg N ha-1 and Nutrisphere-N at planting. Split N application with Nutrisphere-N slightly improved chlorophyll in corn leaves. Nutrisphere-N increased plant LAI at 8 weeks after planting by 10.2% at 135 kg N ha-1 in split applications and LAI at 16 weeks after planting by 50.4, 56.2, 59.4 and 70.7% at 45, 90, 135 and 180 kg N ha-1 with split applications, respectively. Plant NDVI at 16 weeks after planting corn improved with Nutrisphere-N by 9.3, 11.5, 13.0 and 9.2% with N applied at planting and 16.0, 12.9, 10.2 and 14.3% with split N applications at 45, 90, 135 and 180 kg ha-1, respectively. Nutrisphere-N increased grain N by 4.5% at 135 kg N ha-1 applied to corn at planting and 5.2% at 90 kg N ha-1 applied in split applications. Generally, N applications with Nutrisphere-N positively improved growth parameters and yields of corn.

Article Details

EVALUATION OF NITROGEN APPLICATION METHODS AND RATES WITH NUTRISPHERE-N ON CORN IN SOUTHEASTERN COASTAL PLAINS

Authors:

Pawel Wiatrak

Publisher:

Science Publications

Journal:

American Journal of Agricultural and Biological Sciences Vol.9 Issue 1, pp.109-118

Document Type:

Article

Publication Date:

4/2014

Document Language:

English

Document ID (Org No.):

2001395990

pISSN:

1557-4997

DOI:

10.3844/ajabssp.2014.109.118

Corn

Nutrisphere-N

Normalized Difference Vegetation Index (NDVI)

Leaf Area Index (LAI)

Polymer

Issues

Article Details

EVALUATION OF NITROGEN APPLICATION METHODS AND RATES WITH NUTRISPHERE-N ON CORN IN SOUTHEASTERN COASTAL PLAINS

Authors: Pawel Wiatrak

Publisher: Science Publications

Journal: American Journal of Agricultural and Biological Sciences Vol.9 Issue 1, pp.109-118

Document Type: Article

Publication Date: 4/2014

Document Language: English

Document ID (Org No.): 2001395990

pISSN: 1557-4997

DOI: 10.3844/ajabssp.2014.109.118

Corn

Nutrisphere-N

Normalized Difference Vegetation Index (NDVI)

Leaf Area Index (LAI)

Polymer

Issues

Authors:

Pawel Wiatrak

Publisher:

Science Publications

Journal:

American Journal of Agricultural and Biological Sciences Vol.9 Issue 1, pp.109-118

Document Type:

Article

Publication Date:

4/2014

Document Language:

English

Document ID (Org No.):

2001395990

pISSN:

1557-4997

DOI:

10.3844/ajabssp.2014.109.118