Plant analysis interpretation based on a new index: Deviation from optimum percentage (DOP)

Montañés, L.; Heras, L.; Abadı́a, Anunciación; Sanz, Manuel

doi:10.1080/01904169309364613

Cited by 82 publications

(49 citation statements)

References 12 publications

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“…The deviation from optimum percentage (DOP index) for nutritional status of trees (Montañés et al 1993) was calculated from leaf chemical analysis at 60 DAFB by the following mathematical formula: The C o was taken from optimum values for sweet cherry proposed by Leece (1975). Besides, it provides the general nutritional status of nutrients through the ΣDOP index, obtained by adding the values of DOP indices irrespective of sign.…”

Section: Methodsmentioning

confidence: 99%

“…According to Montañés et al (1993), the DOP index is the relative content of assessed nutrients and is used to indicate if an element tends to be deficient (DOP < 0), optimal (DOP = 0), or in excess (DOP > 0). In the present study, leaf N was higher than normal in all cultivars (Table 7), and was attributed to excessive N-fertilization (Leece 1975).…”

Section: Dop and σDop Indexesmentioning

confidence: 99%

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Early tree growth, productivity, fruit quality and leaf nutrients content of sweet cherry grown in a high density planting system

Milošević¹,

Milošević²,

Glišić³

et al. 2015

Hortic. Sci.

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Milošević T., Milošević N., Glišić I., Nikolić R., Milivojević J. (2014): Early tree growth, productivity, fruit quality and leaf nutrients content of sweet cherry grown in a high density planting system. Hort. Sci. (Prague), 42: 1-12.From 2008 to 2013 the phenology, early tree growth, precocity, yield, fruit quality attributes and leaf nutrient status of four sweet cherry cultivars (May Early, Germersdorfer, Sunburst and Celeste) were evaluated on Colt rootstock in the Cacak region (Serbia) with 1,250 trees/ha. The soil type was heavy and acidic. The results showed that cv. May Early blossomed and ripened earlier than the other cultivars, and had the highest tree vigour, better yield performance and the poorest fruit physico-chemical attributes. The best fruit quality was found in cv. Sunburst which is categorized as a low precocious cultivar with small yield capacity. Lower tree vigour, good productivity and fruit quality were shown by cv. Celeste. In general, leaf analysis indicated that all cultivars had excessive levels of N and Cu, and in some cases P, whereas K, Ca, Mg, Fe, Mn, Zn and B were deficient in all cultivars. The best balanced nutritional values (ΣDOP) were observed in cv. Sunburst, whereas wider imbalance was observed in cv. Celeste for macronutrients. In contrast, the ΣDOP for micronutrients indicated that cv. Celeste had the best balanced nutritional values, whereas cv. Sunburst had the worst.

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Section: Methodsmentioning

confidence: 99%

Section: Dop and σDop Indexesmentioning

confidence: 99%

Early tree growth, productivity, fruit quality and leaf nutrients content of sweet cherry grown in a high density planting system

Milošević¹,

Milošević²,

Glišić³

et al. 2015

Hortic. Sci.

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“…Furthermore, leaf macro and micronutrient contents at 90 days after full bloom (DAFB) and deviation from optimum percentage (DOP and £DOP) index were estimated for the diagnosis of the leaf mineral status of the trees. The larger the ΣDOP, the greater is the intensity of imbalances among nutrients (Montañés et al 1993). According to £DOP index (for 2012+2013), the combination of both products (borax+zinc sulfate treatments) at full bloom stage applied on flowers of three pear cultivars (Spadona, Duchesse and Daregazi) showed better balanced nutritional values than the rest of treatments.…”

Section: Discussionmentioning

confidence: 99%

“…Concentrations and ratios such as Evolutive Nutrient Balance (ENB), Diagnosis and Recommendation Integrated System (DRIS), Deviation from Optimum Percentage (DOP and ΣDOP index) and others (Montañés et al, 1993;Sanz, 1999;Zarrouk et al, 2005). The deviation from optimum percentage (DOP) is an alternative method to the traditional diagnosis and recommendation integrated system (DRIS), which is capable of accurately defining the quantity and quality of each nutrient in plants (Montañés et al, 1993). Besides, it provides the general nutritional status of all macro and micronutrients through the sum of DOP indexes (_DOP macro and _DOP micro) .…”

Section: Introductionmentioning

confidence: 99%

Investigations on Determination of Nutritional Status of Pear Trees According to a New Index - Deviation From Optimum Percentage (DOP)

Mirabdulbaghi¹

2015

Cercetari Agronomice in Moldova

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ABSTRACT. This experiment was conducted in a private orchard (Kosar) in district of Shahriar of Alborz province (Iran), during 2012-2013, to determine the effects of B and Zn applied on flowers at full bloom stage on leaf macro and micronutrient contents at 90 days after full bloom (DAFB) of three pear cultivars (Spadona and Duchesse and a pear cultivar from Iranian national collection, named as Daregazi). The deviation from the optimum percentage (DOP) index of macro and micronutrients for two studied years was used to evaluate the nutritional status: optimal (DOP = 0), deficiency (DOP < 0) or excess (DOP > 0). The ΣDOP for two studied years is obtained by adding the values of DOP index irrespective of sign. The larger the ΣDOP, the greater is the intensity of imbalances among nutrients. In general, a DOP value close to the optimum level (DOP = 0) were observed in treated studied pear cultivars with B and Zn applied on flowers at full bloom stage compared with the control trees (without any application of boron and zinc). The DOP macro and DOP micro were, respectively, positive and negative for all of studied pear cultivars regardless of treatments. According to £DOP index (during 2012-2013), the combination of both products (borax+zinc sulfate treatments) at full bloom stage applied on flowers of three pear cultivars (Spadona, Duchesse and Daregazi) showed better balanced nutritional values than the rest of treatments.

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“…To interpret the corn leaf macronutrient contents, the deviation from optimal percentage (DOP) method was used, as proposed by Montañés et al (1993). This method is defined as the standard deviation in the concentration of an element in relation to the optimal level taken as a reference value.…”

Section: Parameters Evaluatedmentioning

confidence: 99%

Macronutrient content and accumulations in different arrangements of dwarf pigeon pea intercropped with corn

Gallo¹,

Fontanétti²,

Guimaraes³

et al. 2017

Afr. J. Agric. Res.

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Intercropping is a technique which consists of cultivating two or more species in the same area. In these systems, planning and management should be carried out in order to avoid interspecies competition for water, light, and nutrients. This paper aimed to evaluate macronutrient content and accumulations in corn (Zea mays L.) intercropped with dwarf pigeon pea (Cajanus cajan L.) in different plant arrangements. The experimental design adopted was one of randomized blocks, with six treatments and four repetitions. The treatments consisted of different arrangements of dwarf pigeon pea intercropped with corn: corn in monoculture, dwarf pigeon pea sown in the same rows as the corn, one row of dwarf pigeon pea sown between the rows of corn, dwarf pigeon pea sown in the same rows and in a row between the corn, and dwarf pigeon pea sown in the same rows and in two rows between the corn. The following variables were evaluated: dry matter (t ha ). The arrangement with dwarf pigeon pea sown in the same rows and in two rows between the corn increased N content in the corn plants, in relation to the other arrangements and the corn in monoculture. Ca content and accumulations were higher in corn in monoculture and in the arrangement with dwarf pigeon peas sown in the same rows as the corn.

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Plant analysis interpretation based on a new index: Deviation from optimum percentage (DOP)

Cited by 82 publications

References 12 publications

Early tree growth, productivity, fruit quality and leaf nutrients content of sweet cherry grown in a high density planting system

Early tree growth, productivity, fruit quality and leaf nutrients content of sweet cherry grown in a high density planting system

Investigations on Determination of Nutritional Status of Pear Trees According to a New Index - Deviation From Optimum Percentage (DOP)

Macronutrient content and accumulations in different arrangements of dwarf pigeon pea intercropped with corn

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