NULL

Two FIELD experiments were carried out at the Experimental farm of Assiut University during the two successive winter seasons 2013/2014 and 2014/2015. The aim of this study was to investigate the effect of three sowing methods (i.e broad casting method, broad casting on the terraces with width 1.5 m and drilling on the terraces with width 1.5 m and the distance between rows 15 cm) and microelements foliar application (two levels) on two bread wheat cultivars and their economical visibility. The obtained results indicate that all measured traits exhibited significant differences in response to sowing methods; moreover, microelement foliar application scored significant differences in yield and yield components. drilling on terraces sowing method gave the highest mean value of grain and biological yields as compared with broad casting method, which is the common sowing method for wheat. Furthermore, cultivar Shandawel-1, developed in Upper Egypt, surpassed the other cultivar Misr-1 in its yield under the experiment conditions.

Two FIELD experiments were carried out at the Experimental farm of Assiut University during the two successive winter seasons 2013/2014 and 2014/2015. The aim of this study was to investigate the effect of three sowing methods (i.e broad casting method, broad casting on the terraces with width 1.5 m and drilling on the terraces with width 1.5 m and the distance between rows 15 cm) and microelements foliar application (two levels) on two bread wheat cultivars and their economical visibility. The obtained results indicate that all measured traits exhibited significant differences in response to sowing methods; moreover, microelement foliar application scored significant differences in yield and yield components. drilling on terraces sowing method gave the highest mean value of grain and biological yields as compared with broad casting method, which is the common sowing method for wheat. Furthermore, cultivar Shandawel-1, developed in Upper Egypt, surpassed the other cultivar Misr-1 in its yield under the experiment conditions.

Six separate field trials were conducted at Shandaweel Agric. Res. Station (Sohag governorate), Egypt in 2012 and repeated in 2013 seasons to study the effect of a new irrigation method with NPK rates and frequencies under two planting dates on yield and yield component of Egyptian cotton variety Giza-90. The field trails included seventy two treatments represented the combination between two planting dates (20thMarch and 20thApril), three irrigation patterns; Alternate furrow irrigation (AFI), Fixed two furrow irrigation (FFI) and Conventional furrow irrigation (CFI)), three NPK rates (75, 100 and 125%from the recommended fertilizer levels) and four splitting of NPK (Two, Three, Four and Five equal parts).The obtained results revealed that sowing dates affected significantly all studied characters due to the variation in total amount of heat units in each date. Early planting date in March increased yield and its component (number of sympodia branches/ plant, number of open boll/ plant, boll weight, seed cotton yields/ plant and fed.) in both seasons. In the first season, a new irrigation method, i.e. alternative irrigation system resulted the high mean values for number of sympodia / plant, number of open boll, boll weight, yields per plant and per fed.in the first planting date, but in the second date recorded high mean values for number of open boll and yield per plant. Moreover, in the second season appearance high mean values for number of open boll in the first planting date and number of sympodia/ plant, number of open boll and seed cotton yield per plant in the second planting date. Application of NPK fertilizer up to high rate 125% from the recommended NPK/fed. significantly increased number of sympodia/ plant, boll weight and seed cotton yield per fed. under the two planting dates in both season. On the other hand, 100 % from the recommended NPK/fed. recorded high mean values for number of open boll and seed cotton yield per plant in the both seasons for each planting date. Splitting fertilizers five times led to increase the number of sympodia / plant, boll weight and seed cotton yield per fed. in the first planting date for 2012 and 2013 seasons as well as, number of sympodia/ plant, seed cotton yield per fed. and number of sympodia/ plant, number of open boll in 2012 and 2013 seasons respectively, for the second planting date compared with the other treatments.

Six separate field trials were conducted at Shandaweel Agric. Res. Station (Sohag governorate), Egypt in 2012 and repeated in 2013 seasons to study the effect of a new irrigation method with NPK rates and frequencies under two planting dates on yield and yield component of Egyptian cotton variety Giza-90. The field trails included seventy two treatments represented the combination between two planting dates (20thMarch and 20thApril), three irrigation patterns; Alternate furrow irrigation (AFI), Fixed two furrow irrigation (FFI) and Conventional furrow irrigation (CFI)), three NPK rates (75, 100 and 125%from the recommended fertilizer levels) and four splitting of NPK (Two, Three, Four and Five equal parts).The obtained results revealed that sowing dates affected significantly all studied characters due to the variation in total amount of heat units in each date. Early planting date in March increased yield and its component (number of sympodia branches/ plant, number of open boll/ plant, boll weight, seed cotton yields/ plant and fed.) in both seasons. In the first season, a new irrigation method, i.e. alternative irrigation system resulted the high mean values for number of sympodia / plant, number of open boll, boll weight, yields per plant and per fed.in the first planting date, but in the second date recorded high mean values for number of open boll and yield per plant. Moreover, in the second season appearance high mean values for number of open boll in the first planting date and number of sympodia/ plant, number of open boll and seed cotton yield per plant in the second planting date. Application of NPK fertilizer up to high rate 125% from the recommended NPK/fed. significantly increased number of sympodia/ plant, boll weight and seed cotton yield per fed. under the two planting dates in both season. On the other hand, 100 % from the recommended NPK/fed. recorded high mean values for number of open boll and seed cotton yield per plant in the both seasons for each planting date. Splitting fertilizers five times led to increase the number of sympodia / plant, boll weight and seed cotton yield per fed. in the first planting date for 2012 and 2013 seasons as well as, number of sympodia/ plant, seed cotton yield per fed. and number of sympodia/ plant, number of open boll in 2012 and 2013 seasons respectively, for the second planting date compared with the other treatments.

The present research was concerned with studying the physiological response of two sorghum cultivars to different rates and splitting of NPK. This study was carried out in the Experimental Agricultural Farm of Agriculture faculty in Assiut Univ, Assuit Governorate, Egypt; during the two growing seasons of 2012 and 2013. The field experiment was carried out in a randomized complete block design (RCBD) using split-split plot arrangement with three replications. The cultivars (Giza 15 and Dorado cultivar) were a signed in the main plot, while the NPK rates (75, 100 and 125% of the recommended NPK fertilizers/fed) were allotted in the sub plot and different Split doses (1, 2, 3 and 4 times) were allotted in the sub-sub plots. The experimental unit area was 12 m2. In general, the maximum meanvalues of grain yield (21.2 and 23.1 ard/fed in 2012 and 2013 seasons, respectively) were obtained from Giza 15 cultivar when received the highest NPK rate (125% of the recommended NPK fertilizers/fed) applied at three equal doses.

The present research was concerned with studying the physiological response of two sorghum cultivars to different rates and splitting of NPK. This study was carried out in the Experimental Agricultural Farm of Agriculture faculty in Assiut Univ, Assuit Governorate, Egypt; during the two growing seasons of 2012 and 2013. The field experiment was carried out in a randomized complete block design (RCBD) using split-split plot arrangement with three replications. The cultivars (Giza 15 and Dorado cultivar) were a signed in the main plot, while the NPK rates (75, 100 and 125% of the recommended NPK fertilizers/fed) were allotted in the sub plot and different Split doses (1, 2, 3 and 4 times) were allotted in the sub-sub plots. The experimental unit area was 12 m2. In general, the maximum meanvalues of grain yield (21.2 and 23.1 ard/fed in 2012 and 2013 seasons, respectively) were obtained from Giza 15 cultivar when received the highest NPK rate (125% of the recommended NPK fertilizers/fed) applied at three equal doses.

The present research was concerned with studying the physiological response of two sorghum cultivars to different rates and splitting of NPK. This study was carried out in the Experimental Agricultural Farm of Agriculture faculty in Assiut Univ, Assuit Governorate, Egypt; during the two growing seasons of 2012 and 2013. The field experiment was carried out in a randomized complete block design (RCBD) using split-split plot arrangement with three replications. The cultivars (Giza 15 and Dorado cultivar) were a signed in the main plot, while the NPK rates (75, 100 and 125% of the recommended NPK fertilizers/fed) were allotted in the sub plot and different Split doses (1, 2, 3 and 4 times) were allotted in the sub-sub plots. The experimental unit area was 12 m2. In general, the maximum meanvalues of grain yield (21.2 and 23.1 ard/fed in 2012 and 2013 seasons, respectively) were obtained from Giza 15 cultivar when received the highest NPK rate (125% of the recommended NPK fertilizers/fed) applied at three equal doses.

The present research was concerned with studying the physiological response of two sorghum cultivars to different rates and splitting of NPK. This study was carried out in the Experimental Agricultural Farm of Agriculture faculty in Assiut Univ, Assuit Governorate, Egypt; during the two growing seasons of 2012 and 2013. The field experiment was carried out in a randomized complete block design (RCBD) using split-split plot arrangement with three replications. The cultivars (Giza 15 and Dorado cultivar) were a signed in the main plot, while the NPK rates (75, 100 and 125% of the recommended NPK fertilizers/fed) were allotted in the sub plot and different Split doses (1, 2, 3 and 4 times) were allotted in the sub-sub plots. The experimental unit area was 12 m2. In general, the maximum meanvalues of grain yield (21.2 and 23.1 ard/fed in 2012 and 2013 seasons, respectively) were obtained from Giza 15 cultivar when received the highest NPK rate (125% of the recommended NPK fertilizers/fed) applied at three equal doses.

In order to study the effect of irrigation water rates and splitting nitrogen on productivity of wheat. Three field experiments were conducted at El-Wady Al-Assiuty experimental farm in new reclaimed soil during 2013/2014 and 2014/2015 seasons using cultivar Sids 12 using sprinkler irrigation system. Each experiment subjected to one level of irrigation water requirements (100%, 75% and 50%) and each experiment contains four treatments of splitting nitrogen fertilization. Results indicated that, irrigation levels had a high significant effect on yield and its components. As when 50% of the recommended irrigation requirements was applied, the reduction of grain yield reached 44.3 and 28.9% in the first and second seasons, respectively. Moreover, splitting nitrogen fertilization affected all studied traits. As splitting nitrogen fertilization to five splits recorded the highest mean value of grain and biological yields as compared with control (3 splits) in both seasons. The interaction between irrigation levels and splitting of the nitrogen fertilizer had a significant effect on grain yield. As the highest mean value of grain yield was obtained from 5 splits with 100% of irrigation requirement in the first season while in the second season the highest grain yield was obtained from 6 splits with 100% irrigation requirements. From this study, data clarify that in sandy soils about 25% of irrigation requirements could be saved without significant losses in grain yield by splitting the nitrogen fertilization. Thus we could have additional amount of water could be used for increase the cultivation area of wheat to minimize the production consumption gap of this crop.