Volume : 10, Issue : 10, OCT 2024

STANDING CROP BIOMASS AND PRIMARY PRODUCTIVITY OF GUIZOTIA ABYSSINICA L AT AURANGABAD DISTRICT.

SUSHMA SINHA

Abstract

The present paper deals with standing crop biomass and primary productivity in different plant compartments was found to be variable with the age of the crop.  The total plant biomass of ageing plant indicated a sigmoidal curve in three varieties of G. villosa –1, G. villosula –2 and G. jacksonii–3. The total plant biomass was recorded to be 115.53 g/m² (G. villosa –1), 92.85 g/m² (G. villosula –2 ) and 72.42 g/m² (G.Jacksonii–3) at final harvest i.e. 105 days. Contribution of stem and leaves to the total plant biomass has increased between 15 and 90 days. Infl./pod biomass per cent as found to be increasing throughout. Standing dead biomass was maximum 9.40 per cent (G. villosa –1), 8.97 per cent (G. villosula –2) and 6.53 per cent (G.Jacksonii–3) at final harvest i.e. 105 days. Peak values for current increments in biomass were observed at 90 days in G. villosa –1 and 105 days in G. villosula –2 and Jacksonii–3. The peak values for net primary productivity were found to be highest at 90 days for G. villosa –1 and 105 days harvest for G. villosula –2 and G. Jacksonii–3.

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