Effect of Various Organic Manures on Chlorophyll Content and Leaf Surface Area of Guar

Guar (Cyamopsis tetragonoloba L.) is an upright, deep rooted plant of family Leguminosae (Fabaceae), highly valued for its yield, nutritional importance and drought tolerance. Due to increasing cost of chemical fertilizers and its adverse impact on soil, using organic amendments is an alternative method for the improvement of crop production and soil fertility maintenance. The humic substance in organic manure helps in development of plant roots and this in turn helps plants in drawing water as well as other nutrients from the soil. In the present study, enriched vermicompost treated variety RGC 1003 showed maximum growth, increased number of leaves and leaf surface area when compared to other manurial treatments, while RGC 936 showed maximum growth and number of leaves on enriched vermicompost and leaf surface area showed increase in plants grown on vermicompost. The total chlorophyll content was found maximum in RGC 936 on treatment with vermicompost and in RGC 1003 on treatment with farmyard manure. Value of drought tolerant crop like Guar can thus be enhanced by use of organic manure by farmers.