Tag Archives: Phosphate fertilizer

Effect of Mineral, Organic Fertilization, and Application Depth of Phosphate Fertilizer on Phenological Phases of Grapevine Cultivar, Al-Helwani

Mahmoud Al-Shihadat*(1)

(1). Administration of Horticulture Research, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(*Corresponding author: Dr. Mahmoud Al-Shihadat. E-Mail: mahmod.h.sh@hotmail.com

Received: 31/05/2016                           Accepted: 19/06/2016

Abstract

The experiment was carried out on vineyard with 10 years old grapevines of cultivar Al-Helwani (Vitis vinifera L.), which grown in Daraa governorate, during three seasons (2008, 2009 and 2010) to study the effect of organic, mineral fertilization rates and the application depth of triple superphosphate (T.S.P) on the phenological phases of grapes. Three mineral fertilizer rates of (N. P. K) were used, i.e., 75-25-50, 150-50-100, and 300-100-200 Kg/ha. The triple super-phosphate was added by broadcast on the soil surface, and in depth of 30 cm, in three replications, in addition to a control without fertilization. Besides the addition of dried granulated manure in January. The results showed that there was no significant effect to the addition of compost and depth phosphate fertilization on the length of flowering stage, and there were no significant differences among the treatments that used. While a significant decrease was achieved in the length of the flowering stage with the addition of NPK fertilization, with the rates of 1.1, 1.08, and 1.05% for the first, second, and third rates, respectively. The results also clarified a delay in maturity with the addition of compost as compared with control (P≥0.05), while in terms of phosphate depth addition, there were significant differences between the treatments on maturity. The maturity was earlier (70 days) when superphosphate was broadcasted, and the maturity took more days (73 days) when was added in depth of 30 cm. The maturity took more time (74 days) with the addition of the third rate of superphosphate significantly. The maturity took (68 days) with the addition of the first rate of superphosphate, while the length of maturity was about (71) days in control.

Key words: Grapevine, Al-Helwani, Phenological phases, Phosphate fertilizer, Organic fertilization.

Full paper in Arabic: PDF

Effect of Different Treatments of Fertilizing on the Nutritional Status of Micronutrients on the Al-Helwani Grapevine

Mahmoud Al-Shihadat*(1)

(1). Horticulture Administration, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(*Corresponding author: Dr. Mahmoud Al-Shihadat. E-Mail: mahmod.h.sh@hotmail.com).

Received: 14/06/2016                         Accepted: 06/04/2016

Abstract

A research was carried out in Daraa Governorate, Syria, during three seasons (2008, 2009 and 2010) with 10 years old grapevines of cultivar Al-Helwani (Vitis vinifera L.) to study the effect of different treatments of fertilizing on the nutritional status of micronutrients. Three mineral fertilizer rates of (N.P.K) 75-25-50, 150-50-100, 300-100-200 Kg/ha were used, in addition to a control without fertilization. The triple super-phosphate was added by broadcast on the soil surface, and in bands on depth of 30 cm. All experiment trees were sprayed with a solution of fertilizer containing micronutrients iron sulphate 26% and zinc sulphate 24% and boric acid 17%, in a rate of 1g /L of each of the previous fertilizer compounds. Whereas the dried granulated manure was added with average 30 t/ha. The addition of organic manure led to improve the nutritional status of the grapevine throughout the increasing of the content of their petioles from the nutrients. There was a significant increase in the petioles content of the nutrients when organic manure was added comparing with other treatments, except petioles content of copper. A significant increasing in petioles content of (iron 249.61 PPM, manganese 195.56 PPM, boron 54.30 PPM, magnesium 0.430 %, and calcium 2.42 %) was observed when phosphate fertilizer was added in depth of soil comparing with broadcast treatments (iron 227.15 PPM, manganese 186.36 PPM, boron 52.51 PPM, magnesium 0.378 %, calcium 2.18 %). While there was no effect of phosphate placement on the content of petioles from copper. In opposite side, the concentration of zinc in the petioles decreased under the treatments of adding the phosphate in depth (36.27 PPM), comparing with their addition on soil surface (43.10 PPM). The third rate of fertilizer was the best of mineral fertilization in increasing the content of petioles from manganese (237.31 PPM) and boron (60.15 PPM). Whereas the first rate of mineral fertilizer was the best in increasing the content of petioles from copper (10.93PPM), zinc (49.71 PPM), magnesium (0.46 %) and calcium (2.46 %). At the same time, the second rate was the best rate in increasing the concentration of iron in the petioles (299.06 PPM), compared to the control (139.06 PPM). So it is advisable to add the organic manure in the vineyards for its positive impact in increasing the efficiency of absorption of mineral minor and major elements, and it is recommended the addition of phosphate fertilizer at a depth of 30 cm for its effect in increasing petioles content of iron and manganese, boron and magnesium.

Key words: Grapevine, Al-Helwani cultivar, Organic fertilization, Phosphate fertilizer, Microelements.

Full paper in Arabic: PDF

Effect of Fertilizing on the Nutritional Status of Helwani Grapevine, (Vitis vinifera L.)

Mahmoud Al-Shihadat*(1)

(1). Horticulture Administration, General Commission for Scientific Agricultural Research (GCSAR).
(*corresponding author: Dr. Mahmoud AL-Shihadat. Email: mahmod.h.sh@hotmail.com).

Received: 16/03/2016                           Accepted: 18/04/2016

Abstract

The research was carried out in Daraa Governorate during three seasons (2008-2010), using ten years old grapevines (Vitis vinifera L.) Helwani cultivar to study the influence of different mineral fertilization NPK, and the way of super-phosphate addition in the presence or absence of manure application on the nutritional status of grapes. Three levels of NPK fertilization were used (75:25:50,150:50:100, and 300:100:200 Kg/ha), in addition to a control without fertilization. Super-phosphate was either broadcasted on the soil surface or added in rows at a depth of 30 cm. Fermented sheep manure was applied at one rate of 30 ton/ha. Split-split plot design with three replications was used. The results showed that addition of manure improved the nutritional status of grapevine throughout increasing nutrient content of their petioles. There was a significant increase in the petioles content of the nutrients (nitrogen 1.33%, phosphorus 0.26%, potassium 1.87%) when organic manure was added compared to control (nitrogen 1.25% and 0.23% phosphorus, potassium 1.81%). A significant increment in petioles content of phosphorus was observed when phosphate fertilizer was added in-depth of 30 cm comparing with the broadcast treatment. There was no effect of the way of addition on the content of petioles from nitrogen and potassium. The third level of NPK was the best in increasing the content of petioles of nitrogen 1.46 %, phosphorus 0.28%, and potassium 1.97%. Therefore, it is recommended to add organic manure in the vineyards for its positive effect on improving the absorption efficiency of minerals. The addition of phosphate fertilizer at a depth of 30 cm is advisable because of its effect on increasing petioles content of phosphorus, which is a good indicator of the nutritional and health status of trees, and for its role in improving production quality and quantity.

Key words: Manuring, Mineral fertilization NPK, Phosphate fertilizer, Petioles, Grapevines.

Full paper in Arabic: Effect of Fertilizing on the Nutritional Status of Helwani Grapevine, (Vitis vinifera L.)