Book review on “Aeromycology over Kachai lemon plantation in eastern Himalayan region”

BN Pande
Contd from previous issue
SECTION – V: In this book Prof. N.I. Singh and his co-authors focused their attention on the problems of SocioEconomic Upliftment of Growers by the Horticultural crop.
They also added in it the Limitations of Physico- Economic Upliftment of the Kachai lemon Farmers. As regard to the Socio-Economic Upliftment of the farmers, Prof. Singh and his co- workers made analysis of 95 Kachai lemon growers selling lemon in the Kachai village and provided the information like 501 villagers in 2011, on an average, a grower grows 187 plants with a range of 25 – 3000 per grower. Half of the growers grow 60 plants or more as shown in the median. The main output is 54 tins 20 liters capacity) with a range of 10-600 tins. Half of them produce 40 tons or more. The average yield per tree is 00.65tin approximately equal to 8 kg of fruit (using 12.5 kg / tin with a range of 0.01- 1.6. Half of the trees yield 0.64 tin more (approximately equal to 8kg of fruit). The correlation between yield/ tree in tins and number of trees is (-)0.44 i.e higher the number of trees low is the yield/ tree. It raises the classic size- productivity debate in agriculture. The negative association between size of a farm and productivity used to be a strong argument for breaking up large farms. Yield is high in small farms due to better care of plants. Yield / tree is much higher when the growers grow only a few trees. It is obvious that when a farmer grows many trees, it spreads over a large area which in turn due care cannot be given to the plants which are aging and becoming more vulnerable to diseases associated with climate change.
• Phytoextracts of the ten medicinal plants showed different inhibitory effects on the growths of fungal pathogens of Kachai lemon.
• Phytoextract Curcuma longa showed highest antifungal activity against Fusarium sp. followed by Ageratum sp. and Zingiber sp. respectively.
• Phytoextract of Curcuma longa showed highest growth inhibition rate
• Against Penicillium digitatum the highest antifungal activity exhibited by Azadirachta indica, Zingiber sp. etc.
• The phytoextracts used in this experiment showed higher growth (%) at higher concentration rate.
• The highest antifungal rate against Penicillium digitatum was due to Azadirachta indica.
• The four chemicals were used for the management of fungal diseases of Kachai lemon and showed significant antifungal activity against the fungal pathogens.
• Carbendazim 50% W.P. exhibited the highest inhibitory effect against species of Fusarium 100% growth inhibition even at lower concentration (0.1%).
• The best result was shown by Carbendazim 50% for controlling Phytophthora parasitica, which exhibited 85.59% growth inhibition at its 0.1% concentration.
(To be contd)