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You searched for: Journal name Agronomy journal Remove constraint Journal name: Agronomy journal Subject term fertilizers Remove constraint Subject term: fertilizers Subject term nutrient requirements Remove constraint Subject term: nutrient requirements
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1. On-Farm Estimation of Nutrient Requirements for Spring Corn in North China

Author:
Yi Zhang; Pen Hou; Qiang Gao; Xinping Chen; Fusuo Zhang; Zhenling Cui
Source:
Agronomy journal 2012 v.104 no.5 pp. 1436-1442
ISSN:
0002-1962
Subject:
Zea mays; agricultural management; agricultural policy; algorithms; corn; databases; dietary recommendations; fertilizers; grain yield; hybrids; models; nutrient deficiencies; nutrient requirements; nutrient uptake; nutrients; spring; China
Abstract:
... Estimating the nutrient requirements of corn (Zea mays L.) is crucial to facilitate fertilizer management practices and agricultural policies. Our understanding of crop nutrient uptake requirements is limited by traditional site-specific nutrient recommendation algorithms. A database composed of 1065 on-farm observations collected during 2006 to 2009 in North China was used to assess the reciproca ...
DOI:
10.2134/agronj2012.0125

2. Dris Norms for 11 Nutrients in Corn Leaves

Author:
A. M. O. Elwali; G. J. Gascho; M. E. Sumner
Source:
Agronomy journal 1985 v.77 no.3 pp. 506-508
ISSN:
0002-1962
Subject:
plant nutrition; Zea mays; fertilizers; nutrient requirements; Diagnosis and Recommendation Integrated System; Georgia
DOI:
10.2134/agronj1985.00021962007700030032x

3. Influence of Salinity and N-P Fertility Levels on Mineral Content and Growth of Sorghum in Sand Culture

Author:
P. M. Patel; A. Wallace; E. F. Wallihan
Source:
Agronomy journal 1975 v.67 no.5 pp. 622-625
ISSN:
0002-1962
Subject:
Sorghum bicolor; calcium; chlorides; equipment; fertilizer application; fertilizers; grain sorghum; irrigated farming; leaves; mineral content; nutrient requirements; salinity; sand; sodium; soil fertility; soil salinity; vegetative growth
Abstract:
... Plant growth is characteristically depressed at certain levels of salt concentrations yet it sometimes responds to fertilizers even though growth depression can be expected to reduce nutrient requirements and even though fertilizer application increases salinity to some degree. This study was designed to examine tension zones involving interactions between nutrient supply (N and P) and salt concen ...
DOI:
10.2134/agronj1975.00021962006700050009x

4. Effect of Fertilizer and Fritted Trace Element (FTE 503) Levels and Placement on Snap Beans Grown on a Tiwiwid Sand

Author:
G. K. Saxena; S. J. Locascio
Source:
Agronomy journal 1975 v.67 no.4 pp. 459-462
ISSN:
0002-1962
Subject:
Phaseolus vulgaris; Quartzipsamments; crop yield; fertilizer rates; fertilizers; flowering; green beans; nutrient deficiencies; nutrient requirements; nutrient uptake; nutrients; sand; soil water; trace elements; Guyana
Abstract:
... Nutritional requirements of vegetables grown on noncoastal regions of Guyana have not been established. The present study was conducted on a major soil type in these areas, a Tiwiwid sand (Typic Quartzipsamments) to evaluate the effects of fertilizer rate and placement and fritted trace element (FTE 503)⁴ rate on nutrient uptake, root distribution, and yield of snap beans (Phaseolus vulgaris L.). ...
DOI:
10.2134/agronj1975.00021962006700040003x

5. Relation of calcium and magnesium to the growth and quality of tobacco

Author:
McMurtrey, J.E. Jr.
Source:
Agronomy journal 1932 v.24 no.9 pp. 707-716
ISSN:
0002-1962
Subject:
Nicotiana tabacum; fertilizers; abnormal development; leaves; nutrient deficiencies; nutrient requirements; calcium; magnesium
Abstract:
... When only nitrogen, phosphorus, and potassium are supplied in the fertilizer on some soils the growth of the tobacco plant exhibits definite pathological symptoms and growth is decidedly reduced. The addition of magnesium results in some increase in growth, but the growth still may be abnormal. This abnormality consists of development of upper leaves of the plant in which the tips and margins are ...
DOI:
10.2134/agronj1932.00021962002400090005x