Volume 15 Part 1 Article 54: Impact of physico-chemical properties of casing on yield of Agaricus bisporus (Lange) Imbach

Volume 15 Part 1 Article 54
Year 2000
Title: Impact of physico-chemical properties of casing on yield of Agaricus bisporus (Lange) Imbach
Authors: M. Singh, R.E. Singh and H.S. Chaube


Six casing mixtures viz. FYM + Spent compost (1:1, 2:1, 1:3 v/v), FYM + Garden soil (3:1 v/v), FYM alone and spent compost alone were formulated and analyzed for their physico-chemical properties and evaluated further for their effect on production and productivity of Agaricus bisporus.

Minimum (0.60 g/cm3) and maximum (0.88 mg/cm3) bulk density were recorded from FYM and spent compost, respectively. The bulk density increased with the increase in ratio of spent compost with FYM. In FYM alone porosity was highest (92%) followed by FYM and spent compost (2:1) where it was 88 per cent. Water holding capacity was highest (191.55%) in FYM alone and the minimum (91.70%) in spent compost. The pH of the mixmres did not differ substantially from each other. In mixture, where FYM dominated, electrical conductivity and organic matter was higher and significantly low where spent compost was the major material.

Macro and micro-nutrients estimation included nitrogen, phosphoras, potassium, iron, copper, manganese and zinc. The levels of all these nutrients were significantly different in the casing mixtures studied.

The casing mixmres when evaluated in terms of yield kg/quintal compost, the results have been interesting. The yields recorded in all the six freatments were significantly different from each other. In the first as well as second crop, casing mixmre prepared using FYM + Spent compost (2:1) performed best giving a yield of 18.83 kg and 17.21 kg/qtl compost. Casing mixmre formulation developed from FYM and garden soil (3:1) was the next best in both the crops. Thus, it has been observed that the formulations having higher amount of FYM and lower quantity of spent compost or soil performed better and looked more suitable for developing casing mixtures.

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