Effect of forest exposure on nutrient balance in oak (Qurecus aegilops)

Ali, Othman Omar; Abdulrahman, Nashat M.; Esmail, Akram Othman

doi:10.32894/kujss.2011.42856

Cited by 3 publications

(5 citation statements)

References 1 publication

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More difference between ratios and critical values means increase in balance and vice versa. Similar results were reported by Esmail et al, (2011).…”

Section: Discussionsupporting

confidence: 92%

“…After that, the samples were oven dried at 65 C° for 72 hrs. , then ground by the mill and were digested for determining nitrogen, phosphorus and potassium using the standard methods mentioned by (Jaiswal, 2003).Then depending on the obtained mean of nutrient content the DRIS chart (Diagnosis Recommendation Integrated System) was used for determining the nutrient balance of oak tree at both studied exposures as described by (Esmail et al, 2011).…”

Section: Nutrient Balance Measurementmentioning

confidence: 99%

“…Nutrient concentration in plant biomass is the result of the balance between nutrient uptake, plant growth and nutrient retranslocation, and the loss of these processes are likely to be influence by both plant genetic make-up and soil fertility, as well as other environmental conditions (Hagen-Thorn et al, 2004) . Esmail et al, (2011) indicated that the concentration of some nutrients like nitrogen, phosphorus, and potassium were ranged from (4.00 to 4.20%, 0.38 to 0.30%, and 3.00 to 2.95%), respectively in oak trees at east and west exposure at Hijran forest. The best nutrient balance was recorded at east exposure in comparing with west exposure.…”

Section: Introductionmentioning

confidence: 99%

“…The best nutrient balance was recorded at east exposure in comparing with west exposure. Esmail et al, (2011) studied the concentration of main cations (Ca 2+, Mg 2+ , Na + , and K + ) of Hijran forest soil at two exposures. The results explained that the range of the mentioned cations were (3.30 to 2.98, 0.80 to 0.70, 0.57 to 0.40, and 0.40 to 0.38 mmolc.L -1 ), respectively and the results showed that the east exposure is better than west exposure.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of forest exposure on growth and nutrient balance at Hijran forest.

2023

ZJPAS

View full text Add to dashboard Cite

The study was conducted during 2022 at Hijran forest at right side of the main road of Salahaddin -Shaqalawa in Erbil governorate Iraqi Kurdistan region with GPS reading (latitudes = 36°22' to 36º24' N; longitudes = 44°16' to 44°19' E.). This study was carried out to determine the effect of two forest exposures (north east and south west) using randomized block design using three replicates on growth and nutrient balance of oak trees (Quercus aegilops L.). Growth parameter including tree height (m), stem diameter (cm), and leaf area (cm 2 ) as well as nutrient balance were measured according to the standard methods. The results indicated that the forest exposure affected significantly on the studied characters. The highest values of tree height, stem diameter at breast height level, and leaf area were (4.48 m, 11.03 cm, and 39.60 cm 2 ) which were recorded from north east while their lowest values (3.22 m, 4.64 cm, and 25.78 cm 2 ) were observed from south west. On the other hand, the exposures also affected on nutrient balance, the nutrient balance at north east exposure was better than the south west. The difference between the ratios of the studied nutrients and their critical values were higher at north east exposure in comparing with south west. The goals of this study is testing the influence Hijran forest exposure on nutrient balance and tree growth to notice some factors to be followed that affects widely on the reforestation program like site selection that must take into account elements including soil quality, topography, water availability, climate in addition to the selection of native tree species that can live in the degraded area and are well fit into the regional ecosystem; there is also to be the plantation of the variety of tree species to increase biodiversity.

show abstract

“…More difference between ratios and critical values means increase in balance and vice versa. Similar results were reported by Esmail et al, (2011).…”

Section: Discussionsupporting

confidence: 92%

Section: Nutrient Balance Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of forest exposure on growth and nutrient balance at Hijran forest.

2023

ZJPAS

View full text Add to dashboard Cite

show abstract

“…To interpret the results of leaf analysis for a variety of plants, including lentils [14] , oak [15] , wheat [16] , soybeans [17] , sunflowers [18] , broccoli [19] , walnut [20] , and onion [21] , several authors in Iraq have successfully used the DRIS method.…”

Section: Introductionmentioning

confidence: 99%

DRIS formulas and PCA approach for evaluation of the nutritional status of walnut trees in the Hawraman area

Maulood

2024

PJBAS

View full text Add to dashboard Cite

It is essential to understand the proper nutrient levels for obtaining the highest yield when analyzing the foliar composition of walnut leaves using DRIS techniques that consider the interaction between nutrients. The study aims to identify the nutritional deficiencies in walnut orchards responsible for low production by analyzing the data using DRIS and PCA methods. Measured nine elements in the walnut tree leaf: N, P, K, Ca, Mg, and microelements Fe, Zn, Cu, and Mn. Used the Diagnosis and Recommendation Integrated System (DRIS) to assess nutrient status in the leaf, detect deficits or imbalances, and make specific recommendations for optimal growth. Along with Principal component analysis, diagnose deficient nutrients and deal with problems. In the present work, 42 samples of walnut leaves were analyzed and collected from the walnut orchard at the Balkha/Hawraman, located at 35°11'59.0"N 46°08'59.1"E, altitude 695 m.a.s.l. A high-yielding population of walnut trees forms up 71.4% of the total, while a low-yielding population makes up the remaining 28.6%. Results showed that the most deficient nutrients ascendingly were: Fe>Cu> Zn>Mn>N=Ca>K>P>Mg. The PCA results show that the DRIS index and the low-and high-yield subgroups' nutrient concentrations were represented by 78.8%, 87.2%, and 93.5%, respectively of the total variance. From previous results and field observation, the walnut orchards need more attention and studies in other aspects to fulfill knowledge about soil quality index, climatic changes, and diseases related to these precious trees to make decisions for best monitoring and management.

show abstract