Environmental Impact for Applications of Neem Cake Coated Urea and Nano Iron Foliar on Rationalization of Chemical Nitrogen Fertilizers and Wheat Yield

SUMMARYPaddy rice was grown without fertilizer after jute which had been supplied with nitrogen as neem cake coated urea (NCU), wax coated urea (WCU), ammonium sulphate or standard urea at rates of 0, 40, 80 or 120 kg N ha−1. NCU or WCU applied to jute increased the dry matter and grain yield of the rice, suggesting that enough nitrogen is left behind to grow a subsequent rice crop without further fertilizer application.

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Coated and Uncoated Urea in Ramie Leaf Production

Experimental Agriculture ◽

10.1017/s0014479700017816 ◽

1984 ◽

Vol 20 (3) ◽

pp. 245-249 ◽

Cited By ~ 1

Author(s):

Apurba Sarkar ◽

Gitasree Sarkar ◽

Anupam Sarkar

Keyword(s):

Dry Matter ◽

The Other ◽

Dry Matter Yield ◽

Fresh Weight ◽

Bast Fibre ◽

Leaf Production ◽

Neem Cake ◽

Residual Nitrogen ◽

Neem Cake Coated Urea ◽

Coated Urea

SUMMARYRamie (Boehmeria nivea Gaud.), which can provide fodder in addition to bast fibre, was supplied with nitrogen in three different forms: as neem cake coated urea (NCU), lac coated urea (LCU) and standard urea, at rates of 60, 120, 180, 240 and 300 kg N ha−1 annually in four equal applications. The ramie was cut four times a year for two years. NCU increased fresh weight, leaf dry matter yield and leaf protein at almost every cutting compared with the other forms of nitrogen, and there was an indication of increased residual nitrogen in the soil. Leaf dry matter and protein content increased with increasing levels of nitrogen up to 180 kg ha−1. It is suggested that coating urea with neem cake makes it a better source of nitrogen for ramie leaf production.

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Fertilizer–use efficiency of amended urea materials in flooded rice

The Journal of Agricultural Science ◽

10.1017/s0021859600085178 ◽

1989 ◽

Vol 112 (2) ◽

pp. 277-281 ◽

Cited By ~ 2

Author(s):

H. S. Chauhan ◽

B. Mishra

Keyword(s):

N Uptake ◽

Deep Placement ◽

Fertilizer Use ◽

Urea Supergranules ◽

Neem Cake ◽

Prilled Urea ◽

Matter Production ◽

Neem Cake Coated Urea ◽

Coated Urea ◽

Use Efficiency

summaryIn a field experiment on a typic hapludoll in 1983 and 1984, deep placement of urea supergranules at 40 and 80 kg N/ha proved to be the best N source, of five tested, for grain production, but at 120 kg N/ha it was similar to neem-cake-coated urea. The results showed that deep placement of urea supergranules can save fertilizer use by 60% compared with prilled urea to obtain the same yield. Shellac-coated urea and dicyandiamide-coated urea was more effective than prilled urea in 1984. Differences in dry-matter production and grain yield were directly related to N uptake by the plants. On average, apparent recovery of applied N increased from 35% for prilled urea to 55, 52·5,46·5 and 37·5% for urea supergranules, neem-cake-coated urea, shellac-coated urea and dicyandiamide-coated urea, respectively.

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Yield and chlorophyll index in cabbage in function of enhanced-efficiency nitrogen fertilizers and urea

Scientific Electronic Archives ◽

10.36560/1312020997 ◽

2020 ◽

Vol 13 (2) ◽

pp. 6

Author(s):

J. J. Frazão ◽

A. R. Silva ◽

F. H. M. Salgado ◽

R. A. Flores ◽

E. P. F. Brasil

Keyword(s):

Nitrogen Fertilizers ◽

N Losses ◽

N Sources ◽

Promising Strategy ◽

Applied Dose ◽

Coated Urea ◽

Chlorophyll Index ◽

Polymer Coated Urea ◽

N Rates ◽

And Control

The increase of the efficiency of the nitrogen fertilization promotes reduction of the applied dose and decreases the losses of nitrogen (N) to the environment. The objective of this work was to evaluate the yield and the relative chlorophyll index (IRC) in cabbage crop under cover fertilization, using enhanced-efficiency nitrogen fertilizers, compared to urea, in variable doses. The experimental design was randomized blocks in a 3x4+1 factorial scheme (three sources, four rates and control), with four replications. The N sources used were: common urea (U), urea treated with urease inhibitor NBPT® (UN) and Kimcoat® polymer coated urea (UK). The N rates used were 0, 40, 80, 160 and 320 kg ha-1, divided in two fertilizations at 20 and 40 days after transplantation. Up to 160 kg ha-1 of N, there was no difference between N sources and N rates for both yield and RCI. The enhanced-efficiency N sources (UN and UK) promoted higher averages compared to common urea, possibly due to the higher N losses from common urea. Thus, the use of urease inhibitors or polymers associated with urea is a promising strategy to improve cabbage yield, as well as reducing N losses to the environment.

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Soil solution and plant nitrogen on irrigated rice under controlled release nitrogen fertilizers

Ciência Rural ◽

10.1590/0103-8478cr20170279 ◽

2017 ◽

Vol 48 (1) ◽

Cited By ~ 1

Author(s):

Thais Antolini Veçozzi ◽

Rogério Oliveira de Sousa ◽

Walkyria Bueno Scivittaro ◽

Cristiano Weinert ◽

Victor Raul Cieza Tarrillo

Keyword(s):

Controlled Release ◽

Rice Field ◽

Nutrient Release ◽

Nitrogen Fertilizers ◽

Irrigated Rice ◽

Plant Nitrogen ◽

Coated Urea ◽

Use Efficiency ◽

Polymer Coated Urea ◽

N Use

ABSTRACT: A study was conducted to evaluate the solubilization and nitrogen (N) use efficiency (NUE) of controlled release nitrogen fertilizers in irrigated rice, compared to urea. It was developed under semi-controlled conditions, including five treatments: Control, Splitted Urea (pre-sowing and topdressing), Pre-sowing urea, and Polymer Coated Urea (PCU) with 60-day and 90-day release. PCUs did not maintain high NH4 + and NO3 - levels in solution over a longer period than urea. NUE of PCUs was similar to uncoated urea, not increasing nutrient release in irrigated rice field.

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RESPONSE OF SENSITIVE CORN HYBRIDS TO THE ASSOCIATION OF NICOSULFURON AND TIMING OF NITROGEN APPLICATION

Revista Ciência Agrícola ◽

10.28998/rca.v17i2.6316 ◽

2019 ◽

Vol 17 (2) ◽

pp. 27

Author(s):

Heitor Franco de Sousa ◽

Paulo César Timossi ◽

Antônio Paulino da Costa Netto ◽

Claudio Hideo Martins Costa

Keyword(s):

Grain Yield ◽

Correlation Coefficients ◽

Nitrogen Fertilizers ◽

Nitrogen Application ◽

Corn Hybrids ◽

Corn Crop ◽

Coated Urea ◽

The One

Nicosulfuron is an herbicide used in corn crop for controlling weeds, some hybrids are sensitivity to nicosulfuron even more when it is applied near to the application of nitrogen fertilizers. Thus, this study aimed to evaluate the response of sensitive corn hybrids to association of urea and coated urea applied near to nicosulfuron application on V4 corn stage. P 3646 hybrid was the most sensitive, and urea and coated urea applied near to nicosulfuron had significant effect on corn growth for all hybrids. Most hybrids showed high or significant (p < 0.10) correlation coefficients for grain yield, cob length and row per ear. SYN 7341 hybrid was the one that showed better results in grain yield with urea and nicosulfuron combination. Coated urea should not be applied after V8corn stage when nicosulfuron is applied at V4.

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The assessment of the influence of the Gumiton organomineral complex on the development of root rot and structural elements of the winter wheat yield

BIO Web of Conferences ◽

10.1051/bioconf/20213202012 ◽

2021 ◽

Vol 32 ◽

pp. 02012

Author(s):

Aleksey Suslov ◽

Dimitry Sviridenk ◽

Vasiliy Mamayev ◽

Irina Sychiova

Keyword(s):

Winter Wheat ◽

Root Rot ◽

Flag Leaf ◽

Wheat Yield ◽

Nitrogen Fertilizers ◽

High Yield ◽

Yield Increase ◽

Organic Mineral ◽

Organomineral Complex ◽

Rot Disease

It has been shown that pre-sowing treatment increases field germination by 5.5%, and the preservation of plants after overwintering increases by 4.3%. Gumiton strengthened the work of the assimilation apparatus of the flag leaf due to an increase in leaf area by 29.3-49.1% and extended the life of plants. As a part of a tank mixture (Tabu Super, 1.5 l / t + Tertia, 2.5 l t), the drug allowed to reduce the prevalence of the root rot disease to 2.45-1.05% in comparison with the control. The organomineral complex provided the formation of a larger and more leveled grain with a mass of 1000 grains of 47.0-47.5 g, 43.9 g in the control; the grain nature is more than 780 g / dm 3, 751.7 g / dm 3, in the control. The use of Gumiton (seeds + tillering + piping) against the background of N 96 P 96 K 96 provided a high yield increase by 37.8%. To reduce the expenses of foliar fertilization with nitrogen fertilizers, the Gumiton organic-mineral complex should be recommended, since it is an element of greening in intensive technologies of winter wheat cultivation.

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Effect of ammonium and nitrate nitrogen fertilizers on wheat yield in relation to accumulated nitrate at different depths of soil in drylands of China

Field Crops Research ◽

10.1016/j.fcr.2015.07.019 ◽

2015 ◽

Vol 183 ◽

pp. 211-224 ◽

Cited By ~ 26

Author(s):

Zhao-hui Wang ◽

Yan-fang Miao ◽

Sheng-xiu Li

Keyword(s):

Nitrate Nitrogen ◽

Wheat Yield ◽

Nitrogen Fertilizers ◽

Different Depths

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Fertilisation azotée en forêt de pin gris (Pinusbanksiana). I. Cheminement des engrais dans le sol

Canadian Journal of Forest Research ◽

10.1139/x81-055 ◽

1981 ◽

Vol 11 (2) ◽

pp. 414-422

Author(s):

C. Camiré ◽

B. Bernier

Keyword(s):

Ammonium Nitrate ◽

Ammonium Sulfate ◽

Nitrogen Availability ◽

Urea Formaldehyde ◽

Calcium Nitrate ◽

Nitrogen Retention ◽

Jack Pine ◽

Nitrogen Fertilizers ◽

Original Form ◽

Coated Urea

Six nitrogen fertilizers (urea, sulfur-coated urea, urea-formaldehyde, ammonium nitrate, ammonium sulfate, and ammonium nitrate) were individually applied, either in fall or in spring, at a rate of 224 kg N/ha and compared for nitrogen retention in the different horizons of a podzol under jack pine. Despite its susceptibility to nitrogen losses through ammonia volatilization, urea was by far, among readily available nitrogen fertilizers, the one whose nitrogen is best retained in soil surface horizons. Retention varied with weather conditions that prevailed immediately after fertilizer application. With the other fertilizers used, nitrogen retention followed this order: ammonium sulfate > ammonium nitrate > calcium nitrate. After four seasons, about 50% of the nitrogen applied as sulfur-coated urea and urea-formaldehyde was still found in its original form. Ammonium sulfate is next to urea among the recommended nitrogen sources for similar jack pine sites, considering that fertilizers with nitrate are prone to leaching and the sulfur-coated urea and urea-formaldehyde used presented problems of nitrogen availability.

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