اختبار تأثير بعض التوليفات من طبقة التغطية وكمية اللقاح الفطري المضافة لها في الحاصل المبكر للفطر الزراعي الأبيض Agaricus bisporus

Abstract

This experiment was carried out at the mushroom cultivation farm - Faculty of Agriculture - University of Kirkuk, for the period of 20/11/2017 to 20/1/2018 for the purpose of testing the effect of two factors, The first including eight combinations of casing layers which were Peat moss[P], Pine bark [B], Olive pits (pomace) [C], Sand [S] With different mixing ratios (Peat moss : 100%, P:C:B:S 1:1:1:1, P:C:S 1:1:1, P:B:S 1:1:1, P:S 1:1, C:B:S 1:1:1, C:S 1:1 and B:S 1:1). and the amount of Spawn to the Casing layers which were 0 g.m-2 , 300 g.m-2 on the early productivity of Agaricus bisporus in controlled conditions temperature, humidity and lighting. experimental units were randomly distributed in forty eight treatments with three replicates. The results showed that the combination of the Casing layer P:C:B:S 1:1:1:1 resulted in shortening the time required for the emergence of pinheads 14.50 Days and the formation of fruit bodies 20.67 Days compared with other treatments. The use of P:B:S 1:1:1 , P:C:S 1:1:1 and P:C:B:S 1:1:1:1 resulted in an increase product's characteristics First flash 16.51,15.80,15.07 kg.m-2 respectively, and percentage of bio efficiency 51.57,49.36,47.09 kg.m-2 respectively, High values were obtained for the number of fruit bodies at P:B:S 1:1:1, C:B:S 1:1:1 and P:C:S 1:1:1 648,600,537 Fruit body.m-2 respectively. As for the addition of spawn to the casing layer (Casing inoculum), the non-addition of spawn led to shortening the time for the appearance of pinheads 15.33 Days and the length of the appearance of the fruit bodies 21.92 Days and achieved the highest values of the properties of the first flash 14.00 kg.m-2 and the number of fruit bodies 548 Fruit body.m-2.