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Thursday, July 30, 2020 | History

3 edition of Nitrogen accumulation profiles of selected grain and vegetable crops found in the catalog.

Nitrogen accumulation profiles of selected grain and vegetable crops

Nitrogen accumulation profiles of selected grain and vegetable crops

a bibliography (1940-1992)

  • 376 Want to read
  • 9 Currently reading

Published by TVA in [Knoxville, Tenn.?] .
Written in English

    Subjects:
  • Crops and nitrogen -- Bibliography

  • Edition Notes

    StatementS.J. Meischen, K.R. Byrd
    SeriesBulletin -- Y-233, Bulletin (National Fertilizer & Environmental Research Center (U.S.)) -- Y-233
    ContributionsByrd, K. R, Tennessee Valley Authority
    The Physical Object
    FormatMicroform
    Pagination14 p
    Number of Pages14
    ID Numbers
    Open LibraryOL14989482M

      Naturally, legume crops such as peas and beans can fix nitrogen symbiotically by interacting with soil nitrogen-fixing rhizobia, bacteria that become established intracellularly within root nodules. Ever since this was first demonstrated in , consistent attempts have been made to extend the symbiotic interaction of legumes with nitrogen Cited by: The objectives of this field study were to determine (i) soil nitrate-N status in the spring following grain legumes, and (ii) grain legume effects on grain yield, grain yield components, and N nutrition of the subsequent hard red spring wheat (Triticum aestivum L. emend. Thell.) crop fertilized with 0, 75, and kg ha −1. Two-year crop.

    As the grain forms, N is translocated from the leaves and stems to the developing grain. Figure 1. Percent of total biomass and N uptake during the growing season at various wheat growth stages. From: Nitrogen Management for Hard Wheat Protein Enhancement Plant biomass production lags behind N uptake and accumulation (Figure 1). By boot stage, the.   Abstract. Nitrogen (N) application in maize (Zea mays L.) reached a maximum of kg N ha −1 in the US Midwest in Grain yield has continued to increase at a rate of kg ha −1 yr −1, implying an improvement in N objective was to measure the rate of genetic gain and the traits that contributed to the observed N efficiency for a set of DuPont Cited by:

    Nitrogen uptake in grain and total nitrogen uptake had a significant response to N fertilization and different varieties (Table 2).Grain N-uptake increased significantly with the other hand, the highest grain N-uptake was due to Khazar variety. Khazar variety accumulated maximum N ( kgha−1) in the grain and straw Size: KB.   The main objective of this project was to compare on-farm measurement techniques for estimating N contributions from cover crops using 1) separated species lab tests (a standard experimental method), 2) bulked species lab tests, 3) fresh weight, 4) dry weight and 5) canopy height and density.


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Nitrogen accumulation profiles of selected grain and vegetable crops Download PDF EPUB FB2

Abstract. A bibliography of nitrogen accumulation profile data for 25 vegetable and grain crops reported between and is presented. The selected crops are asparagus, broccoli, brussels sprouts, cabbage, carrots, cauliflower, celery, corn, cotton, cucumber, field bean, field pea, garlic, lettuce, onions, and peppers.

Get this from a library. Nitrogen accumulation profiles of selected grain and vegetable crops: a bibliography (). [S J Meischen; K R Byrd; Tennessee Valley Authority.]. Nitrogen accumulation profiles of selected grain and vegetable crops: A bibliography () Technical Report Meischen, S J ; Byrd, K R A bibliography of nitrogen accumulation profile data for 25 vegetable and grain crops reported between and is presented.

Plants that contribute to nitrogen fixation include the legume family – Fabaceae – with taxa such as clover, soybeans, alfalfa, lupins, peanuts, and contain symbiotic bacteria called Rhizobia within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other the plant dies, the fixed nitrogen is released.

Nitrogen uptake by crops Crop Uptake Overview of the relationships among N uptake efficiencies and crop N requirements Fertilizer Guide Development and Usage Crop N accumulation Grain crops Legume crops Specialty crops Turfgrass and forage crops Cover.

own recent investigations (17, 18, 23), the main grain crops such as wheat and maize were able to obtain relatively high yields (usually above 6 t ha. Nitrogen nutrition has a major influence on grain quality in rice, though its influence on milling characteristics, translucence, and color (Blumenthal et al., ) as well as protein contents are variable (Prakash et al.,Champagne et al., ).

Application of N significantly increases protein content in rice generally as indicated by Cited by: 8. Grain nitrogen (N) concentration is one of the main quality parameters of wheat grains.

Since few reports have quantified the processes of N accumulation in both grain and vegetative parts in wheat (Triticum aestivum L.), this study was undertaken to develop a dynamic model for simulating plant N uptake and grain N accumulation in wheat by focusing on the variation of N Cited by: Estimating plant-available nitrogen release from cover crops 5 Example: You sampled the cover crop using one of the harvest methods (page 7) and submitted a com-posite sample of the cover crop to the lab for N analysis.

The cover crop biomass you measured was 2 ton DM/a, and the lab analysis was 3 per-cent N (60 lb N/ton DM). Using Figure 5 or. Distribution and accumulation of dry matter (d.m.) and nitrogen (N) were investigated within ears of a semidwarf, a gigas, and a normal wheat genotype grown under controlled environments.

A high harvest index was linked with a small pre-anthesis N-storage (and vice versa) but this did not affect N amounts in grains because of compensation by Cited by: Modeling plant nitrogen uptake and grain nitrogen accumulation in wheat Article in Field Crops Research 97(2) June with 65 Reads How we measure 'reads'.

The role of nitrogen in crops Nitrogen is an important component of many essential structural, genetic and metabolic compounds in plant cells. It is also an elementary constituent of numerous important organic compounds including amino acids, proteins, nucleic acids, enzymes, and the chlorophyll molecule.

Many fertiliser mixtures applied before planting contain much more nitrogen than most crops require during the early stages of growth. Let’s take cabbages as an example.

If you apply kg of (24), there will be kg of nitrogen in the mixture, yet cabbages require only about kg in total. accumulation, contribute to differences in grain yield and grain N content in corn (Muchow, ).

Also, Hanway () suggested that the demand of N during the grain-filling process is so great that it may not be possible for the plant to maintain the.

Nitrogen catch crops are grown to absorb nitrogen from the rooting zone during autumn and winter. The uptake of N (Nupt) from the soil inorganic N pool (Nmin) to a pool of catch crop nitrogen, will protect the nitrogen against leaching.

After incorporation, a fraction (m) of the catch crop nitrogen is mineralized and becomes available by: ate the response of grain sorghum to varying N fertilizer rates and summer cover. The experimental design was a randomized complete block with four replications.

Each block consisted of five N rates (0, 45, 90,and kg ha–1), three cover crops (cowpea, pigeonpea, and sunn hemp) and two double-cropped grain crops (soybean and grain. nitrogen for the cereal crop. Legume crops have the ability to fix nitrogen from the atmosphere in their root systems.

Plant available nitrogen is released to the cereal crop through the decomposition of crop residues. The credit varies with the proportion of legume, legume species and age of stand in the previous cropping year. No credit is givenFile Size: KB. Nitrogen fixation potential and residual effects of selected grain legumes in a Kenyan soil George N.

Chemining’wa 1*, Peter W. Mwangi 2, Mary W. Mburu 3, Joseph G. Mureithi 2 1Department of Plant Science and Crop Protection, University of Nairobi, Kenya. The N fixation process is a chemical reaction facilitated by Rhizobia bacteria in root nodules that convert atmospheric N (N 2) to ammonia (NH 3).This process uses energy produced by the legume plant during photosynthesis.

The ammonia is almost immediately converted to ammonium (NH 4).Using the N in ammonium and the carbohydrates from.

Percentage shares of grain accumulated nutrients in the total nutrient accumulation in the aboveground biomass showed significant differentiation as a result of P and K fertilization. For the most part, nitrogen and phosphorus were accumulated in maize grain (60–70%), and potassium – in the stems (50–61%).File Size: KB.

Nitrogen Guidelines for Field Crops in New York. Second Release. J 5 1. INTRODUCTION Nitrogen (N) is an essential and often growth-limiting plant nutrient. Crops take up N that is released to the soil solution as a result of atmospheric deposition, soil organic.grain (N gd) and straw (N sd) N demands above the mini- mum concentrations are given by N gd 5 N gx 2 N gn and N sd 5N sx 2N sn,respectively;(iv)atharvest,allNabove the minimum concentration (N a) is considered available for allocation to grain or straw; (v) the proportion of N.Key words: Effects of nitrogen, Grain filling, Zea mays, Phenology, Growth stages Abstract An experiment was conducted to see the effects of nitrogen at different growth stages on phenology, rate and grain filling period of maize.

Nitrogen rates (0, 75, and kg/ha) were arranged in main plot and time of nitrogen application in sub plots.