Abstract
To study the effects on nodulation and yield of Cowpea (Vigna Unguiculata), a research had been conducted in the sandy loam soil of the horticulture farm of Agriculture and Forestry University in 2018. The experiment was laid out in factorial 2×5 Randomized complete block design with ten treatments and 3 replications which consists; 1st factor – mulched and un-mulched condition, 2nd factor – Rhizobium inoculation (R) at 1gm/ 16.66 gm seed, Phosphorus (P) at recommended dose of 120kg/ha ,use of R plus P(RP),RP plus Molybdenum (RPMo) at 2 gm Molybdenum per kg seed and control with no such application. The analysis of the findings showed that mulched and RPMo treatment were found significantly superior than other treatments in case of main effects of yield attributes like plant height, canopy diameter and stem number. The highest fresh weight of pods per plant i.e. 312.61 gm and 312.53 gm and no of nodules per plant i.e. 121.63 and 129.33 were found in mulched and RPMo treatment, significant at p
Highlights
Legumes are the important food crops in relation to nutrition
Per capita consumption of grain legumes in Nepal is very low which is around 10 kg/annum or 27g/capita/day [2] and is three times less than minimum requirement prescribed by World health Organization [3]
Ammonium is converted into amino acids like glutamine and asparagine which is exported to the plant
Summary
Legumes are the important food crops in relation to nutrition. Grain legumes occupy 10.22% of the cultivated area which is equal to 0.316 million ha with 0.27 mt production and productivity of 0.85 t/ha [1]. Cowpea (Vignaunguiculata (L.) Walp.) is an important legume vegetable crop of Nepal.It is warm season crop grown in many parts of the country with humid as well as sub-tropical climate. It has numerous uses like vegetable, pulse, green manuring and fodder crop [4]. There are numerous nodules containing Rhizobium bacteria which form symbiotic association with the plants. The bacteria differentiate morphologically into bacteroids inside the nodules and using enzyme nitrogenase, they fix atmospheric nitrogen into ammonium. The plant supplies the bacteria with carbohydrates in the form of organic acids. Though pulses are naturally capable of fixing atmospheric nitrogen, they need a small basal dose of nitrogenous fertilizer for quick and better start
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