, to evaluate the effect of storage methods (normal storage in cotton bags and sealing storage in plastic jars and metal packages) and fumigation with phosphine at 0, 3, 5 and 7 tablets/m 3 on storage efficacy, germination and seedlings parameters of wheat during different storage periods (3, 6 and 9 months after harvesting). The most important results can be summarized as follows:-Increasing storage periods of wheat seed from 3 to 6 and 9 months significantly affected storage efficacy characters (insect infestation and weight loss percentages), final germination percentage and seedling parameters (seedling length, root length, shoot length and seedlings fresh and dry weights).-The best results of storage efficacy of wheat recorded when sealed stored in metal packages, followed sealed stored in plastic jars and lastly in cotton bags. Whereas, highest germination and seedling parameters were recorded when sealed stored in metal packages, followed by normal stored in cotton bags and lastly stored in plastic jars.-The lowest percentages of insect infestation and weight loss in wheat seeds were obtained from fumigation with phosphine at the rate of 7 tablets/m 3. While, maximum values of germination and seedling parameters were obtained from fumigation with phosphine at the rate of 5 tablets/m 3. This study recommended that fumigation wheat seeds before storage in metal packages with phosphine at the rate of 5 tablets/m 3 under the environmental conditions of the experiment in Mansoura, Dakahlia Governorate, Egypt.

No abstract

Two field experiments were carried out at the Experimental Farm Governorate of Sakha Agricultural Research Station, Kafr-elSheikh, Egypt during the two successive seasons 2006/2007 and 2007/2008. The main objectives of this investigation were to study the effect of irrigation regime in four different growth stages (skip-irrigation at stem elongation 41 days after sowing (DAS), apical branching (64 DAS), flowering (83 DAS) and seed filling (114 DAS)). on growth, yield and yield components of six flax genotypes ( Ilona , Sakha 3, Sakha1, Sakha2, strain16 and Giza 8). The obtained results could be summarized as follows.Skip-irrigation at seed filling gave the highest values of technical stem length in the first season , stem diameter and straw yield/fad. in both seasons. Also, flax genotypes under study differed significantly in their straw yield and its related characters in both seasons, except straw yield in the first season and stem diameter in the second season. Giza 8 gave the highest value in stem diameter and yield of straw yield / plant in both seasons, while Sakha 2 gave the highest straw yield /Fad. in both seasons.The interaction between irrigation treatment and flax genotypes had a highly significant in technical stem length and straw yield per plant in the first season.Skip-irrigation during the seed filling gave the highest values in length of top capsule zone, number of capsules/plant, number of seeds/ plant and seed yield/Fad. in both seasons. Skip-irrigation at flowering stage gave the highest oil seed percentage in both seasons.Also, flax genotypes under study differed significantly in their seed yield and its related characters in both seasons. In this respect Strain16 recorded the highest length of top capsule zone, number of capsules per plant, seed yield per plant in first season while Giza 8 recorded highest value in second season. Strain 16 recorded the highest value in seed oil content in both seasons.The interaction between irrigation treatment and flax genotypes was significantly for length of top capsule zone, number of capsules /plant, number of seeds/plant and seed oil content in both seasons.On light of the obtained results, skip one irrigation during the seed filling stage gave better results under lower amounts of water during the growth of flax.

Two field experiments were carried out at farm in Abo Hussein Village, Abo Kebeer district, Sharkia Governorate, during the two successive winter seasons of 2005/2006 and 2006/2007 to study the response of sole and relay intercropping wheat (Triticum aestivum vulgare L.) to the effect of the times of two last irrigations and ridge width as well as their interaction on yield and its attributes of wheat. The obtained results could be summarized as follows: 1. The highest values of all studied characters were resulted from giving fourth and fifth irrigations of sole or relay intercropping wheat at 15 th April and 1 st May, respectively, excluding number of spikes/m 2 of sole wheat in the second season, number of spikelets/spike of relay intercropping wheat in the second season and straw yield/fed of sole wheat in both seasons. 2. Sowing both sole and relay intercropping wheat on wide ridges (100 cm) produced the highest values of plant height and grain yield of relay intercropping wheat in both seasons, number of spikes/m 2 and straw yield/fed of sole wheat in both seasons, spike length, number of spikelets/spike, number of grains/spike and 1000grain weight of sole and relay intercropping wheat in both seasons.. 3. The highest values of land equivalent ratio (LER) and area time equivalent ratio (ATER) were resulted from performing fourth and fifth irrigations of wheat at 15 th April and 1 st May and sowing cotton on 15 th April in both seasons. Sowing both wheat and cotton on ridges with width of 80 cm was the most favorable treatment that produced the highest average of LER and ATER in the first season. Whereas, in the second season sowing both wheat and cotton on ridges with width of 90 cm produced the highest average of LER and ATER. 4. The interaction between studied factors had insignificant effect on all studied characters in both growing season, except number of grains/spike of sole wheat in the first season only. Results of this study show that yields and its attributes of sole or relay intercropping wheat grown under the environmental conditions of Sharkia district can be maximized due to carrying out fourth and fifth irrigations at 15 th April and 1 st May, respectively and sowing on ridges with width of 100 cm.

No abstract