EFFECT OF SPUR TYPE, FOLIAR SPRAYS, AND DIFFERENTIAL NITROGEN RATES ON LEAF NUTRIENT CONTENT AND SPUR LEAF AREA OF ALMOND TREES (PRUNUS DULCIS (MILL.) D.A.WEBB)

2013 ◽  
pp. 139-142 ◽  
Author(s):  
S. Saa ◽  
S. Muhammad ◽  
S.J. Castro ◽  
P.H. Brown
Keyword(s):  
Leaf Area ◽  
Nutrient Content ◽  
Prunus Dulcis ◽  
Foliar Sprays ◽  
Almond Trees ◽  
Nitrogen Rates

Spur behavior in Almond trees (Prunus dulcis [Mill.] DAWebb): effects of flowers, fruit, and “June drop” on leaf area, leaf nitrogen, spur survival and return bloom

2017 ◽  
Vol 215 ◽  
pp. 15-19 ◽  
Author(s):  
Daniela Valdebenito ◽  
Sergio Tombesi ◽  
Aude Tixier ◽  
Bruce Lampinen ◽  
Patrick Brown ◽  
...  
Keyword(s):  
Leaf Area ◽  
Prunus Dulcis ◽  
Leaf Nitrogen ◽  
Almond Trees ◽  
Return Bloom ◽  
June Drop

scholarly journals Estimation of Diagnosis and Recommendation Integrated System (DRIS), Compositional Nutrient Diagnosis (CND) and Range of Normality (RN) Norms for Mineral Diagnosis of Almonds Trees in Spain

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 481
Author(s):  
Mario Ferrández-Cámara ◽  
Juan José Martínez-Nicolás ◽  
Marina Alfosea-Simón ◽  
José María Cámara-Zapata ◽  
Pablo Melgarejo Moreno ◽  
...  
Keyword(s):  
Nutrient Content ◽  
Analysis Data ◽  
Prunus Dulcis ◽  
Integrated System ◽  
Leaf Analysis ◽  
Almond Trees ◽  
Mineral Data ◽  
Optimum Period ◽  
The Relationship

To ensure good fertilization, it is necessary to know the optimum nutrient levels for each crop. The most common method for obtaining this information for almond trees is to perform a foliar analysis coupled with the use of interpretive tools such as the traditional range of normality. However, currently, there are other, more sophisticated methods such as the DRIS (Diagnosis and Recommendation Integrated System) and the CND (Compositional Nutrient Diagnosis) which take into account the relationship between nutrients. However, little information is available with respect to these methods in the case of almond trees. In the present work, 288 samples of three contrasting varieties of almond were analyzed—Ferraduel, Ferragnes, and Garrigues (Prunus dulcis, Mill.)—corresponding to bi-weekly sampling between the months of May and September. Leaf analysis data, run with different mathematical and statistical models, lead to knowledge of the optimum period for harvesting samples and the determination of the ranges of normality and norms of DRIS and CND for the Ferraduel, Ferragnes, and Garrigues varieties. Data gained from the leaf nutrient content reported that the best season to harvest and interpret leaf samples was July. In addition, Ferraduel and Ferragnes had higher N, P, and K (2.22, 0.14, and 1.04 mg Kg−1 dw, respectively) than Garrigues (2.00, 0.09. 0.67 mg Kg−1 dw). The norms obtained with the leaf mineral data showed similar values between the Ferraduel and Ferragnes varieties but different values for Garrigues variety. Therefore, Garriges had the highest N/P, N/K, P/K, and P × Mg norms in the DRIS method and the highest VN and VCa norms in the CND method.

Correction of manganese deficiency in barley crops on calcareous soils. 2. Comparison of mixed and compound fertilizers

1973 ◽  
Vol 13 (63) ◽  
pp. 440 ◽  
Author(s):  
DJ Reuter ◽  
TG Heard ◽  
AM Alston
Keyword(s):  
Particle Size ◽  
Field Experiments ◽  
Phosphorus Uptake ◽  
Calcareous Soils ◽  
Nutrient Content ◽  
Manganese Deficiency ◽  
Size Fractions ◽  
Particle Size Fractions ◽  
Foliar Sprays ◽  
Compound Fertilizer

Mixed and compound fertilizers made from superphosphate and manganous sulphate were compared in field experiments as sources of manganese for barley on the calcareous soils of southern Yorke Peninsula, South Australia. The compound fertilizers were made by blending manganous sulphate with 'den-fresh' superphosphate before the granulation process: mixed fertilizers were made by mixing the components after manufacture. The fertilizers were applied at sowing at rates of 19 kg haw1P and 16 kg haelMn in one experiment and 28 kg ha-1 P and 6 kg ha-1 Mn in a second experiment. In the latter, up to three foliar sprays of manganous sulphate (1.3 kg ha-1 Mn per spray) were applied in addition. The rate at which the fertilizers reacted with the soil was studied in an incubation experiment, and the nutrient content of particle-size fractions of the fertilizers was also determined. Plant dry weight, manganese and phosphorus uptake, and grain yield were increased to a greater extent by application of the compound fertilizer than by the mixed fertilizer. Application of compound fertilizers at sowing also delayed the appearance of manganese deficiency symptoms in crops by two weeks compared with mixed fertilizers. Neither fertilizer prevented the occurrence of manganese deficiency and further yield increases were obtained by subsequent foliar sprays of manganous sulphate. Fertilizer manganese was rapidly immobilized in the soil. After 167 hours' incubation, approximately three quarters of that added in manganous sulphate, and in the mixed and compound fertilizers was not extractable in divalent form. The variation in nutrient content of particle size fractions of a compound fertilizer was much less than that in a mixed fertilizer.

scholarly journals Spur behaviour in almond trees: relationships between previous year spur leaf area, fruit bearing and mortality

2011 ◽  
Vol 31 (7) ◽  
pp. 700-706 ◽  
Author(s):  
B. D. Lampinen ◽  
S. Tombesi ◽  
S. G. Metcalf ◽  
T. M. DeJong
Keyword(s):  
Leaf Area ◽  
Almond Trees

scholarly journals Influence of Bacterial Inoculation on Growth and Plant Nutrition of Peach Grafted in Different Rootstocks in Calcareous Soil

2021 ◽  
Vol 50 (9) ◽  
pp. 2615-2624
Author(s):  
Muzaffer İpek ◽  
Şeyma Arıkan ◽  
Ahmet Eşitken ◽  
Lütfi Pırlak ◽  
Mesude Figen Dönmez ◽  
...  
Keyword(s):  
Plant Growth ◽  
Leaf Area ◽  
Iron Content ◽  
Calcareous Soil ◽  
Growth Parameters ◽  
Nutrient Content ◽  
Enzyme Synthesis ◽  
Soil Conditions ◽  
Bacterial Strains ◽  
High Iron Content

The highly calcareous soil limits plant growth parameters due to inadequate uptake of plant nutrients. Calcareous soil conditions affect plant growth through impaired chlorophyll synthesis, root growth, enzyme synthesis, and nutrient uptake. To overcome the negative effect of calcareous soil, six bacterial strains namely Alcaligenes 637Ca, Agrobacterium A18, Staphylococcus MFDCa1, Staphylococcus MFDCa2, Bacillus M3, and Pantoea FF1 were inoculated in one-year-old plants of peach cultivar ‘Elegant Lady’ grafted onto GF677 and Nemaguard rootstocks. The bacterial treatments were observed to improve plant growth and nutrient content compared to the control. Moreover, the GF677 rootstock was observed to be more tolerant to high calcareous soil conditions than Nemaguard, showing better plant growth and nutrient content. At the Nemaguard rootstocks, the largest leaf area was observed to be upon inoculation with MFDCa2 (29.1 cm2), FF1 (28.8 cm2), and M3 (28.1 cm2), whereas at the GF677 rootstock, the highest leaf area was observed upon inoculation with MFDCa1 (34.7 cm2), FF1 (32.6 cm2), and 637Ca (31.5 cm2). The leaf iron content was higher in bacterial treatments than the control. In the Nemaguard rootstock, the highest iron content was measured in plants inoculated with 637Ca (133.49 mg kg–1) and M3 (127.64 mg kg–1), whereas in the GF677 rootstock, the treatments MFDCa1 (131.51 mg kg–1), 637Ca (131.21 mg kg–1), FF1 (127.72 mg kg–1), and M3 (127.68 mg kg–1) resulted in high iron content. The results indicate that bacterial inoculations have a significant potential to improve plant growth and can be used as biofertilizers for peach grafted onto Nemaguard and GF677 in high calcareous soil conditions.

Physical mechanisms produced in the development of nursery almond trees (Prunus dulcis Miller) as a response to the plant adaptation to different substrates

Rhizosphere ◽  
2017 ◽  
Vol 3 ◽  
pp. 44-49 ◽  
Author(s):  
Alba Mondragón-Valero ◽  
Isabel Lopéz-Cortés ◽  
Domingo M. Salazar ◽  
Pascual Fernández de Córdova
Keyword(s):  
Prunus Dulcis ◽  
Plant Adaptation ◽  
Physical Mechanisms ◽  
Almond Trees
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