Review of interaction of ammonium ‐ nitrate and potassium nutrition of crops

Hagin, J.; Olsen, S. R.; Shaviv, A.

doi:10.1080/01904169009364147

Cited by 64 publications

(43 citation statements)

References 12 publications

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“…Ammonium promoted a marked accumulation of N in tissues, which might indicate a less regulated control of uptake than in the case of nitrate. The highest increase in total N was observed with NH4NO3, in agreement with Hagin et al (1990). It would appear that mixed ammonium-nitrate nutrition has an energysaving effect, minimizes pH changes and/or optimizes ATP synthesis.…”

Section: Resultssupporting

confidence: 74%

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Influence of the nitrogen source and concentration on N fractions and free amino acid levels of grape vine explants

et al. 1992

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The influence of the source of inorganic nitrogen (KNO3, ( N H 4 ) 2 S O 4 and NH4NO3) and its concentration (5, 10, 20 and 30 mM N) on total N incorporation, as well as on N distribution into different fractions (ammoniacal, amino, amide and protein) and on free amino acid levels has been determined in grape vine explants cultured in vitro.Increasing concentrations of the nitrogen source resulted in increased total N content in tissues. This effect was small for KNO3, higher for (NH4)2SO 4 and maximal for NHaNO 3. In addition, nitrate promoted an increase in amino-N only, whereas ammonium increased both the ammoniacal-N and the amino-N fractions. Incorporation of N into amide-N and protein-N were not affected significantly by the N sources tested.The application of increasing quantities of N enhanced the accumulation of most free amino acids, especially arginine, alanine and proline, but to different extents, depending on both the N source and its concentration. The combination of ammonium and nitrate resulted in a higher accumulation of amino acids than that observed with either one of the two forms alone.

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Section: Resultssupporting

confidence: 74%

“…In a recent review, Hagin et al (1990) quoted reports indicating that the supply to higher plant roots of ammonium together with nitrate resulted in greater nitrogen content and amino acid accumulation than those obtained with either one of the two forms alone.…”

Section: Resultsmentioning

confidence: 99%

Influence of the nitrogen source and concentration on N fractions and free amino acid levels of grape vine explants

et al. 1992

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“…While, this parameter was responded to all investigated treatments as compared to the control throughout the first and second seasons of this study. The obtained results are in conformity with those previously reported by Hagin et al (1990);Feng et al (1999) and Marwad (2001) on grapevines; on persimmon trees; Moon et al (2000), Guirguis et al (2003) and on pear trees. Moreover, Epstein (1999) said that, maintenance of erect leaves as a result of silicate application can easy account for 10 % increase in the photosynthesis of the canopy and consequently increases in growth and yield.…”

Section: Yield (Either As Kg/tree or Ton/fed) And Yield Increment % supporting

confidence: 82%

“…Uptake of water in tissues is frequently the consequence of active K uptake. Moreover, both K and Ca activate enzymes functions in ammonium assimilation of plant and thus helps prevent accumulation of toxic concentrations of ammonium in plant tissues, which enhanced K and Ca nutrition as they effect especially N uptake then production of organic N compounds, as well as favor translocation of amino acids and carbohydrates in plant (Hagin et al, 1990). Silicon fertilizers have been applied to paddy soils in Japan resulting in a significant increase in rice production (Takahashi et al, 1990).…”

mentioning

confidence: 99%

Studies on Improving Fruit Yield and Quality of Peach CV. "Early sweeling"

2014

NIDOC-ASRT

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HE present study was undertaken during two successive seasons of 2011 and 2012 to study the effect of Ca(NO 3 ) 2 , K-silicate and CPPU at different concentrations either alone or in combinations on some fruit parameters, fruit characteristics and leaf nutrient content of peach tree cv. "Early sweeling" grown under El-Khatatba region condition, Minufiya governorate.The obtained results revealed that most treatments under study significantly increased both yield measurements kg/tree and (ton/fed.) as well as the other parameter (yield increment % in relation to the control) in the two seasons of study. Moreover, results indicated that, both the most of physical fruit characteristics (fruit weight, size, dimensions, and firmness) and chemical fruit characteristics such as (TSS %, total acidity % and total sugar %) were significantly improved as compared to the control. Additionally, leaf mineral content (N, P, K and Ca) was improved in some spraying treatments. It could be concluded that some of studied treatments resulted in a positive and significant effect on majority of investigated parameter and characteristics. Since, the treatment of Ca(NO 3 ) 2 at rate (20 cm 3 /tree) after cytofex at 10 mg/l sprayed was the best and most effective treatment in this concern during both seasons of study.Peach is one of the most important fruit trees grown in Egypt. In addition to that, Early sweeling is an early cultivar peach that exhibited a high adaptation with the local environmental condition.Undoubtedly, there are general agreements that many factors affecting the yield and fruit quality of peach trees. Some of the important effective factors which play an excellent role and contribute to tree production in this respect are spraying trees with nutrient elements (Ca and K) and cytofex (CPPU).Potassium is of almost importance for the water status plant. Uptake of water in tissues is frequently the consequence of active K uptake. Moreover, both K and Ca activate enzymes functions in ammonium assimilation of plant and thus helps prevent accumulation of toxic concentrations of ammonium in plant tissues, which enhanced K and Ca nutrition as they effect especially N uptake then production of organic N compounds, as well as favor translocation of amino acids and carbohydrates in plant (Hagin et al., 1990). Silicon fertilizers have been applied to paddy soils in Japan resulting in a significant increase in rice production (Takahashi et al., 1990). It is considered as one of the important T

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“…The adverse effect of ammonium on root growth in Arabidopsis in absence of potassium (Cao et al, 1993) and this harmful effect can be alleviated by potassium supply which activates the enzymes involved in ammonium assimilation (Hagin et al, 1990) through which root dry weight increased in maize crop. Tacket and Pearson (1964) reported that potassium doubles the weight of roots at harvest.…”

Section: Dry Matter Yieldmentioning

confidence: 99%