Seasonal Trends in Concentration of Nitrogen, Phosphorus, Potassium, Calcium, and Magnesium in Leaf Portions of Apple, Blueberry, Grape, and Peach1

This experiment was conducted on “Salemy” pomegranate cultivar, ten years old, in two private orchards in Tikrit, village of Albu Hayaa’a, and governorate of Kirkuk - Hawija district, village of Suleiman al-Gharb, for agricultural season 2022, to study the effects of adding herd waste, fulvic acid spraying, and growth regulator Brassinolide on vegetative growth, yield, leaves, and kernels’ nutrient content. The experiment was applied with three factors; first factor is addition of herd waste (O) and in three levels is without the addition of (O0) and addition of 5 kg.tree-1 (O5) and addition of 10 kg.tree-1 (O10), second factor is spraying fulvic acid (F) with two concentrations, without spraying (F0) and a concentration of 4 g.L-1 (F4), and third factor is spraying with three concentrations of plant growth regulator brassinolide (B), without spraying (B0) and 0.15 mg.L-1 (B0.15) and a concentration of 0.3 mg.L-1 (B0.3). The treatments were designed as a factorial experiment according to randomized complete block design (R.C.B.D) with three replications and one tree for one experimental unit. The experimental results showed that herd manure fertilizers at 10 kg.Tree-1(O10) significantly increased in shoot length of 55.44 and 72.47 cm, highest leaf area of 6.28 and 7.55 cm2, leaf nitrogen content of 1.522 and 1.594 % and highest leaf phosphor content of 0.357 and 0.430 %, for locations of Tikrit and Hawija, respectively. Results also showed that fulvic acid spray especially at 4 g.L-1 (F4), showed significant superiority in increased in shoot length of 54.97 and 69.23 cm, leaf area of 6.21 and 7.24 cm2, leaf nitrogen content of 1.516 and 1.596 % and leaf phosphor content of 0.351 and 0.412 % for locations of Tikrit and Hawija, respectively. Brassinolide spray also affected, especially spraying at 0.3 mg.L-1 and gave highest increasing of shoot length of 54.84 and 73.73 cm, highest leaf area of 6.19 and 7.78 cm2, leaf nitrogen content of 1.547 and 1.627 % and highest leaf phosphor content of 0.377 and 0.439 % for locations of Tikrit and Hawija, respectively. Twice and triple interactions between study factors had a significant effect in these traits.

Section: Methodsmentioning

confidence: 99%

Response of Pomegranate Trees to Herd Manure Addition and Spraying with Fulvic Acid and Brassinolide

Assi,

Zahwan

2023

“… Plants height (cm): Transplant heights were measured by metric tape measure at beginning and end of experiment, according to difference between them and that such an increase in transplant height.  Leaf Mineral Content: samples of ten leaves from middle shoots according to [18], Leaves were washed with tap water, rinsed with distilled water, and then dried at 70 c⁰ until a constant weight, ground and digested according [19]. Nitrogen was estimated by microkjeldahl method of [20].…”

Section: Methodsmentioning

confidence: 99%

Response of Rose Growth and Flowering to NPK and Potassium Silicates Application and Spraying with Magnesium

Jawad,

Khalil

2023

This study was conducted in a lath house, Dept. Of Hort. and Landscape, College of Agricultural Engineering Sciences, Univ. Baghdad, Al-Jadriya during 2022 growing season to investigate influence of mineral fertilizers NPK, potassium silicate and spraying with magnesium (Disper Mg) on some vegetative growth characteristics and flowering of one year’s old of Wiener Charme rose cultivar. Factors of study experiment included addition of two levels of mineral fertilizers NPK (without addition (C0) and 5 g.transplant-1 (C100), while potassium silicate was added with three levels; without added (S0), adding at 200 mg.L-1 (S200) and adding at 300 mg.L-1 (S300), As for magnesium fertilizer treatments, they were sprayed in three levels (0, 7.5, and 15 g.L-1), which are denoted by symbols M0, M7.5, and M15, respectively. Treatments were replicated three times (four plants in experimental unit) at factorial experiment in a RCBD and thus number of plants used was 216 plants. The experimental results showed that chemical fertilizers at 5 g.L-1(C100) significantly increased in plant height of 16.24 cm, leaf nitrogen content of 1.287 %, leaf phosphor content of 0.349 %, flowers number of 17.64 flower.plant-1 and floral stem length of 20.33 cm. Results also showed that potassium silicate application, showed significant superiority in increased in plant height of 18.66 cm, leaf nitrogen content of 1.286 %, leaf phosphor content of 0.374 %, flowers number of 17.25 flower.plant-1 and floral stem length of 20.04 cm. Magnesium spray especially spraying at 15 g.L-1 excelled in increasing of plant height of 16.07 cm, leaf nitrogen content of 1.289 %, leaf phosphor content of 0.367 %, flowers number of 17.08 flower.plant-1 and floral stem length of 20.62 cm. Twice and triple interactions between study factors significantly affected in all studied traits.

“…Applying a Digimizer software. − Leaf Mineral Content: According to [21], ten middle-branch leaves were used as samples. After being cleaned in regular water, distilled water, and dried at 70 degrees Celsius until consistent weight was achieved, the leaves were crushed and digested in accordance with [22].…”

Section: Methodsmentioning

confidence: 99%

Effect of Amino Acids Addition and Spraying with Glutathione and Kaolin in Growth Apricot Transplants

Al-hayani,

Al-Hadethi

2023

This study was conducted in a lath house, Dept. Of Hort. and Landscape, College of Agricultural Engineering Sciences, Univ. Baghdad, Al-Jadriya during 2022 growing season to investigate influence of liquid organic fertilizer (Siapton 10 L) and spraying with glutathione and kaolin on some vegetative growth characteristics and leaf mineral content of two year’s old of “Red” apricot transplants. Factors of study experiment included addition of two levels of liquid organic fertilizer (Siapton 10 L) containing a group of amino acids to soil, without addition (S0), and 3 ml.transplant-1 (S3), while glutathione spray was sprayed with three levels; without spray (G0), spraying at 200 mg.L-1 (G200) and spraying at 400 mg.L-1 (G400), As for kaolin spray, they were sprayed in three levels (0, 500, and 1000 mg.L-1), which are denoted by symbols K0, K500, and K1000, respectively. Treatments were replicated three times (three transplants in experimental unit) at factorial experiment in a RCBD and thus number of transplants used was 162 transplants. The experimental results showed that liquid organic fertilizers at 3 ml.L-1(S3) significantly increased in plant height of 27.47 cm, highest leaf area of 20.51 cm2, leaf nitrogen content of 1.42 % and leaf phosphor content of 0.26 %. Results also showed that glutathione spray especially at 400 mg.L-1 (G400), showed significant superiority in increased in plant height of 27.60 cm, leaf area of 22.89 cm2, leaf nitrogen content of 1.44 % and leaf phosphor content of 0.30 %. Kaolin spray also affected, especially spraying at 1000 mg.L-1 and gave highest increasing of plant height of 26.37 cm, highest leaf area of 18.17 cm2, leaf nitrogen content of 1.41 % and leaf phosphor content of 0.25 %. Twice and triple interactions between study factors significantly affected in all studied traits.