Analysis of orange leaves for diagnosing nutrient status with reference to potassium

Chapman, H. D.; Brown, Stewart J.

doi:10.3733/hilg.v19n17p501

Cited by 35 publications

(25 citation statements)

References 9 publications

(10 reference statements)

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“…Numerous Furthermore, until recently, despite the great volume of published work, there has been little reliable information about the occurrence of individual organic acids in plants (3,4,5,6).…”

Section: Discussionmentioning

confidence: 99%

Effect of Differential Nitrogen, Potassium, and Magnesium Supply to Young Valencia Orange Trees in Sand Culture on Mineral Composition Especially of Leaves and Fibrous Roots.

et al. 1954

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Young, budded Valencia orange trees were grown for several years in outdoor sand cultures with three levels each of nitrogen, potassium, and magnesium in factorial combinations. Total growth and fruitfulness were greatly dependent on the nitrogen level but relatively independent of the two base elements over a very wide range of supply. These responses and those pertaining to fruit quality were recently described in detail (18).The nutritional status of the trees was evaluated by yearly collections of leaf samples. At the termination of the experiment in January, 1951, samples of leaves, fibrous roots, and woody structures were taken. The present report describes some of the results of mineral analyses made on these tissues. About 5,000 individual determinations of elements were made on over 900 samples. Only mean values are presented in the tables, for illustrative purposes. They represent the main trends and relations found.MIATERIALS AND METHODS Details of culture method have been described elsewhere (18). The trees were grown under differential treatment for slightly over three and one half N-ears and satisfactory growth and fruiting resulted where the combinations of nutrients were favorable. The levels of K and Mg were changed somewhat during the second year to alleviate excessive Mg deficiency. During most of the culture period the following concentrations, in ppm, of the three elements were used: N 30, 80 and 200; K 8, 32 and 180; and Mg 12, 24 and 72. These are referred to hereafter as low, intermediate, and high. The N was supplied as 80 % nitrate and 20 % ammoniacal. The other essential elements were supplied in constant amounts as previously described (18).The first leaf samples were taken in September, 1947, about 3.5 months after the start of the experiment. Subsequent leaf samples were taken on dates given in table I. All leaf samples were detergentwashed (19) except the final collections, which were quite bulky, since they contained all the leaves from the 1-tree plots. The fibrous root samples were not washe(d because of the possibility of altering their base composition through exchange reactions but they were carefull3l rinsed in water and most adhering sandl particles were removed by jarring the dried samples before grinding. The fact that the sand me-(lium was continuously acidic (pH 4.5 to 5.0) is thought to have prevented most compounds from accumulating on the root surfaces as precipitates. Iron determinations for the root tissues, however, are probably meaningless since the roots penetrated the asphalt paint and were partially in contact with the 1 Received October 28, 1953.iron containers. Woody samples (including bark) of trunk, limbs, and large roots were also taken.

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Section: Discussionmentioning

confidence: 99%

Effect of Differential Nitrogen, Potassium, and Magnesium Supply to Young Valencia Orange Trees in Sand Culture on Mineral Composition Especially of Leaves and Fibrous Roots.

et al. 1954

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“…Plant tissue tests in the field are valuable for verifying deficiency symptoms (Chapman and Brown 1950). These tests are considered more direct methods of evaluating plant nutritional status than soil analysis, but it necessarily must involve a well-defined plant part for analysis (Hallmark and Beverly 1991).…”

Section: A Leaf Analysismentioning

confidence: 99%

Diagnosis and Remediation of Nutrient Constraints in Citrus

Srivastava

Singh

Albrigo

2007

Horticultural Reviews

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“…Precise knowledge about the nutrient status of guava trees is of prime importance for improving tree health, fruit yield, and fruit quality. Leaf analysis is a powerful tool in mineral nutrition research with fruit trees, not only to determine response to various nutrients but also as a diagnostic technique in assessing deficiency symptoms and making fertilizer recommendations (Chapman and Brown 1950). However, the success of leaf analysis depends on the selection of the correct leaf and the stage of sampling.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Nutrient Status of Guava Fruit Trees in Punjab, Northwest India through the Diagnostic and Recommendation Integrated System Approach

Hundal

Singh

2007

Communications in Soil Science and Plant Analysis

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The Diagnostic and Recommendation Integrated System (DRIS) was employed for interpreting nutrient analyses of leaf tissue of guava fruit trees (Psidium guajava L.) cultivated in Punjab, northwest India. Standard reference DRIS norms were established for various nutrient ratios and used to compute DRIS indices, which assessed nutrient balance and order of limitation to yield. The DRIS evaluation and sufficiency range approach were equally effective and in agreement for diagnosing deficiencies of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sulfur (S), manganese (Mn), zinc (Zn), and copper (Cu). The results also show that the position of leaf tissue sampled does not have a major effect on the DRIS diagnosis. Nutrient sufficiency ranges derived from DRIS norms were 1.41 -1. 65, P, K, Ca, magnesium (Mg), and S and were 105-153, 58 -110, 15 -29, and 6-16 mg Kg 21 for iron (Fe), Mn, Zn, and Cu, respectively. According to these sufficiency ranges 35, 62, 51, 75, 70, and 68% of samples were sufficient, and 4, 29, 36, 9, 10, and 22% of samples were low in N, P, K, Ca, Mg, and S, respectively. More than 50 and 2% of the guava trees selected for sampling was found to deficient in N and P, respectively. For micronutrients, 15, 6, and 7% of samples were found to be low in Mn, Zn, and Cu.

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Analysis of orange leaves for diagnosing nutrient status with reference to potassium

Cited by 35 publications

References 9 publications

Effect of Differential Nitrogen, Potassium, and Magnesium Supply to Young Valencia Orange Trees in Sand Culture on Mineral Composition Especially of Leaves and Fibrous Roots.

Effect of Differential Nitrogen, Potassium, and Magnesium Supply to Young Valencia Orange Trees in Sand Culture on Mineral Composition Especially of Leaves and Fibrous Roots.

Diagnosis and Remediation of Nutrient Constraints in Citrus

Monitoring Nutrient Status of Guava Fruit Trees in Punjab, Northwest India through the Diagnostic and Recommendation Integrated System Approach

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