Influence of sowing date, varietal differences and planting density on productivity of wheat crop (Triticum aestivum L.)‎

الملخص EN

The present study was conducted at field experiment in Mit Ghamer District, Dakahlia Governorate, Egypt, during ٢٠١٤ / ٢٠١٥ and ٢٠١٥ / ٢٠١٦ seasons.

The study aimed to find out the effect of sowing dates (November ١٥th, November ٣٠th and December ١٥th), cultivars (Giza ١٧١, Sids ١٢ and Gemmiza ١١) and planting densities (٣٠٠, ٤٠٠ and ٥٠٠ grains/m٢) on yield and yield attributes of wheat.

The early wheat sowing on ١٥th Nov.

appeared to be produced the highest plant height, spike length, number of grains/spike, weight of grains/spike, ١٠٠٠-grain weight and grain yield/fad.

Varietal differences effected significantly on yield and yield attributes where, Gemmiza ١١ cultivar appeared to be produced the highest plant height, spike length, grain weight/spike, ١٠٠٠-grain weight and grain yield per fad.

While Giza ١٧١cultivar tended to produce the highest number of spikes/m٢.

On other hand, dense planting of ٥٠٠ grains/m٢ obtained the highest number of spikes per m٢, as well as, grain yield/fad., as compared with the other two planting densities.

While, light density (٣٠٠ grains / m٢) gave the highest grain number/spike and grain weight /spike.

Regarding the significant interaction between the studied factors on almost yield and yield attributes, showed that early sowing on ١٥th Nov.

obtained the highest grain yield/fad., with Gemmiza ١١ and Sids ١٢ cultivars when dense planting of ٥٠٠ grains/m٢ were applied.