Effect of pasture type, phosphorus levels and phosphate solubilizing bacteria on forage productivity under agroforestry system in semi-arid regions
A field experiment was conducted to evaluate the effects of pasture type, phosphorus levels and phosphate solubilizing bacteria on forage biomass and quality under agroforestry system in semi-arid conditions during kharif seasons. The result revealed that dry matter accumulation of lablab bean at 60 DAS, crop growth rate (CGR) from 30 to 45 DAS, dry fodder yield (DFY) of lablab bean and total biomass production were recorded significantly higher when lablab bean was sown with cenchrus grass in alternate paired rows, however, protein yield was estimated to be at par among types of pasture. Growth parameters of lablab bean viz. fresh and dry weight per plant at 60 DAS, CGR (30-45 DAS), number and dry weight of nodules per plant at 45 DAS and quality parameters viz. leaf and stem N-content, dry fodder yield of lablab bean, total biomass, average CP content and protein yield increased significantly with increasing levels of phosphorus from 20 to 60 Kg P2O5/ha. Positive and significant correlation between total protein yield and CP content (r= 0.53*), and biomass production (r=0.64**) was observed. Total biomass production was significantly increased to extent of 9.09 per cent due to PSB inoculation and estimated protein yield was observed to be higher by 10.42 per cent with PSB inoculation as compared to without inoculation.
Amole TA, Oduguwa BO, Shittu O, Famakinde A, Okwelum N, Ojo VOA, Dele PA, Idowu OJ, Ogunlolu, B & Adebiyi AO. 2013. Herbage yield and quality of Lablab purpureus during the late dry season in western Nigeria. Slovak Journal of Animal Science, 46 (1): 22-30.
Boisen SE & Eggum BO. 1987. A critical view on the conversion factor 6.25 from total nitrogen to protein. Acta Agronomica, 37: 299- 304.
Gebrehiwot L, McGrow RL & Assefu G. 1996. Forage yield and quality profile of three annual legumes in the tropical highlands of Ethiopia. Journal of Agriculture, 73: 83-98.
Ghanbari-Binjar A. 2000. Intercropped wheat (Triticum aestivum) and bean (Vicia faba) as a low input forage. Ph D thesis, Wye College, University of London.
Hague I, Nnadi LA & Mohamed Salaleem MA. 2008. Phosphorus management with especial reference to forage legumes in sub-Saharan Africa. Food and Agriculture Organization. http://www.fao.org/wairdocs/ilri/x5488e/x5488eoa.htm.
Hassan MA & Abdelgani M E. 2009. Effect of microbial biofertilization on nodulation, nitrogen and phosphorus content and forage yield of lablab bean (Lablab purpureus L.). American-Eurasian Journal of Sustainable Agriculture, 3(4): 829-835.
Hellsten A & Huss-Danell K. 2001. Interaction effects of nitrogen and phosphorus on nodulation in red clover (Trifolium pratense L.). Acta Agriculturae Scandinavica, 49: 00-0
Khan AA, Jilani G, Akhtar MS, Naqvi SMS & Rasheed M. 2009. Phosphorus solubilizing bacteria: Occurrence, Mechanisms and their role in crop production. Journal of Agriculture Biological Science, 1 (1): 48-58.
Lindner RC. 1994. Rapid analytical methods for some of the more common inorganic constituents of the plant tissues. Plant Physiology, 19: 76-89
Murphy AM & Colucci PE. 1999. A tropical forage solution to poor quality ruminants diets: A review of Lablab purpureus. Livestock Research for Rural Development, 11: 2.
Naeem M, Masroor M, Khan A & Moris JB. 2009. Agrobotanical attributes, nitrogen fixation, enzyme activities and nutraceuticals of hyacinth bean (Lablab purpureus L.): a bio- functional meditional legume. American Journal of Plant Physiology, 4(2): 58-69.
Ogedegbe SA, Ogunlela VB, Odion EC & Olufajo OO. 2011. Growth and growth attributes of lablab (Lablab purpureus L. Sweet) as influenced by phosphorus application cutting height and age of cutting. Research Journal of Agronomy, 5(1): 10-19.
Patil VS, Kale PB, Wankhade RV & Nagdeve MB. 1995. Effect of fertilizer levels and spacing on growth and green pod yield of dolichos bean var. Konkan Bhushan. Vegetable Science, 22 (1): 9-12.
Ram SN, Kumar S, Roy MM & Baig MJ. 2006. Effect of legumes and fertility levels on buffel grass (Cenchrus ciliaris) and annona (Annona squamosa) grown under horti–pasture system. Indian Journal of Agronomy, 51 (4): 278-282.
Sengul S. 2003. Performance of some forage grasses or legumes and their mixtures under dry land conditions. European Journal of Agronomy, 19 (3): 401-409.
Sonoboir HL & Sarawgi SK. 2000. Nutrient uptake, growth and yield of chickpea as influenced by phosphorous, rhizobium and phosphate solubilizing bacteria. Madras Agriculture Journal, 87: 149-155.
Watson DJ. 1952. The physiological basis of variation in yield. Advance Agronomy, 4: 101-145.