The aim of this study is to estimate the effect of irrigation intervals on the yield and the quality of Pepper under Assiut conditions. Three irrigation intervals (every 7 (IR7), 14 (IR14) and 21 (IR21) days) and three Pepper genotypes (Omega F1, Pical F1 and 1515 F1) were used. Our results showed that irrigating pepper plants every week (IR7) significantly gave the highest ascorbic acid content of pepper fruits, total fruits number per plot, average fruit weight, early fruit yield per feddan, and pepper total yield in both seasons. Also, highest value of soil field capacity was found in samples collected from the IR7 treatment. On the other hand, plants irrigated every 21 days (IR21) had the highest values of percentage of whole plant dry weight and proline content. In both seasons, Omega F1 every significantly gave the highest values of total fruit fresh yield, percentage of whole plant dry weight, and fruit vitamin C content in the second season. Bell pepper 1515 F1 significantly produced the highest values of average fruit weight in both seasons. Interestingly, under deficit irrigation Omega F1 genotype (considered as a drought tolerant genotype) which produced the highest total fruit yield, produced lower leaf proline content than 1515 F1 genotype which is more sensitive to water deficit treatments. We conclude that plant response to water deficit depends on the plant genotype, and not on the proline content.

The aim of this study is to estimate the effect of irrigation intervals on the yield and the quality of Pepper under Assiut conditions. Three irrigation intervals (every 7 (IR7), 14 (IR14) and 21 (IR21) days) and three Pepper genotypes (Omega F1, Pical F1 and 1515 F1) were used. Our results showed that irrigating pepper plants every week (IR7) significantly gave the highest ascorbic acid content of pepper fruits, total fruits number per plot, average fruit weight, early fruit yield per feddan, and pepper total yield in both seasons. Also, highest value of soil field capacity was found in samples collected from the IR7 treatment. On the other hand, plants irrigated every 21 days (IR21) had the highest values of percentage of whole plant dry weight and proline content. In both seasons, Omega F1 every significantly gave the highest values of total fruit fresh yield, percentage of whole plant dry weight, and fruit vitamin C content in the second season. Bell pepper 1515 F1 significantly produced the highest values of average fruit weight in both seasons. Interestingly, under deficit irrigation Omega F1 genotype (considered as a drought tolerant genotype) which produced the highest total fruit yield, produced lower leaf proline content than 1515 F1 genotype which is more sensitive to water deficit treatments. We conclude that plant response to water deficit depends on the plant genotype, and not on the proline content.

A Field experiment was conducted in 2015 and 2016 cropping seasons at the Vegetable Crops Research Station, Faculty of Agriculture, Assiut University, to study the response of three Jew’s Mallow Ecotypess (Assiut, Eskandarany and Aswan) to planting dates and foliar application of Gibberellic acid (GA3) and Humic acids (HA) treatments. The Jew’s Mallow ecotypes were planted on 15th Feb. and 15th Oct. in both cropping seasons and subjected to three foliar applications of 0.25mg.l-1 GA3 (T1), 0.5mg.l-1 HA (T2) and 0.5mg.l-1 HA + 0.25mg.l-1 GA3 (T3) and untreated plants were used as control. The results revealed that the Jew’s Mallow ecotype ‘Assiut’ attained the highest plant (cm), number of leaves/plant, weight of leaves/plant(g), weight of plant (g), percentage net weight of leaves/plant and foliage yield (kg.plot-1) in both seasons. The early planting date (15 Feb.) extremely increased growth, yield components and yield parameters in 2015 and 2016. Foliar application of gibberellic acid (GA3) at 0.25mgl-1 (T1) significantly increased growth and yield of Jew’s Mallow plants. Spraying plants of the Jew’s Mallow ecotype ‘Assiut’ with GA3 at 0.25 mg.l-1 at planting date 15th Feb. significantly increased growth, yield components and yield parameters in both seasons.

A Field experiment was conducted in 2015 and 2016 cropping seasons at the Vegetable Crops Research Station, Faculty of Agriculture, Assiut University, to study the response of three Jew’s Mallow Ecotypess (Assiut, Eskandarany and Aswan) to planting dates and foliar application of Gibberellic acid (GA3) and Humic acids (HA) treatments. The Jew’s Mallow ecotypes were planted on 15th Feb. and 15th Oct. in both cropping seasons and subjected to three foliar applications of 0.25mg.l-1 GA3 (T1), 0.5mg.l-1 HA (T2) and 0.5mg.l-1 HA + 0.25mg.l-1 GA3 (T3) and untreated plants were used as control. The results revealed that the Jew’s Mallow ecotype ‘Assiut’ attained the highest plant (cm), number of leaves/plant, weight of leaves/plant(g), weight of plant (g), percentage net weight of leaves/plant and foliage yield (kg.plot-1) in both seasons. The early planting date (15 Feb.) extremely increased growth, yield components and yield parameters in 2015 and 2016. Foliar application of gibberellic acid (GA3) at 0.25mgl-1 (T1) significantly increased growth and yield of Jew’s Mallow plants. Spraying plants of the Jew’s Mallow ecotype ‘Assiut’ with GA3 at 0.25 mg.l-1 at planting date 15th Feb. significantly increased growth, yield components and yield parameters in both seasons.

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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.