IT90K-l372-1-2, IT90K-82-2 and Bahaushe (local). The legume genotypes and reference millet crop (ZM-01-58) were planted in a randomized complete block design with three replications. N difference method and the difference between N 2-fixed and N exported in grain at harvest were used to estimate N 2-fixed and N balance respectively. The biomass yield (2.9 to 5.23 t ha-1) in cowpea cultivars were significantly (P<0.05) higher than in soybean (0.95 to 1.5 t ha-1). Above ground cowpea biomass (vine plus litter) accumulated up to 81.03 kg N ha-1 which differed significantly from the 33.13 kg N ha-1 observed in soybean. N 2-fixed that ranged from 42.27 to 59.07 kg N ha-1 in soybean cultivars was generally higher than those of cowpea. All the soybean cultivars recorded significantly (P<0.05) higher grain N than the cowpea. This explains the high percentage nitrogen harvest index (NHI) (64.33 to 70.22 %) and negative N balances (-9.47 to-1.2 kg N ha-1) obtained in all the soybean genotypes. On account of the large above ground biomass and N content, positive N balances and low percentage N H I, cowpea appeared to perform better in contributing to soil N the following year.

Minna during the 2008 cropping season to investigate the number of nodules, dry shoot biomass, grain yield and, grain N and haulm N contents. An early maturing (75 days) promiscuous soybean cultivar (TGX 1485) was used. The experiment was laid out in a randomized complete block design with six N sources (Uninoculated, inoculated with four rhizobial types {R25B, IRj 2180A, IRc 461 and IRc 291} and 60 kg N ha-1 as urea) and three P-levels (0 kg P 2 O 5 ha-1 , 25 kg P 2 O 5 ha-1 and 50 kg P 2 O 5 ha-1) as treatments. These treatments were replicated four times. The four rhizobial inoculants were found to increase the parameters investigated over those of the control. Except for the nodule number that was significantly (P≤0.05) depressed by N fertilization among treatments, the IRj 2180A rhizobial strain produced yields that were comparable with those of the plots supplied with 60 kg N ha-1. On the other hand, as P-rates increased the parameters investigated also increased.

T uberose (Polianthes tuberosa L.) is among commercial cut flowers. It belongs to family Amaryllidacea and is originated from Mexico. It is commercially used in landscape gardening and in the floriculture industry throughout the world. It is mostly grown in Morocco, France, Hawaii, South Africa, India and China (Naznin et al., 2015). It is used for table purpose as cut flower because it has long spike length, long post-harvest life and extremely fragrance. It is commercially used for garland making, aesthetic purpose, birthday ceremony, floral arrangement such as; bouquets and in perfumes (Qureshi et al., 2018;Ali et al., 2019). It is also used in beverages and pharmaceuticals industry (Mandal et al., 2018). Tuberose gives nice flowers in summer and autumn. Different sizes of bulbs affect the production and quality of tuberose flowers (Raja and Palanisamy, 1999;Aksu and Celikel, 2003). There is serious concern on Abstract | Tuberose is an important element of a landscape garden. It is placed among top ten cut flowers in floriculture industry. Quality production of cut flowers for market depends upon bulb size and growing medium. To investigate the best type of planting medium and suitable bulb size for commercial production of tuberose, an experiment was conducted in the Horticulture Nursery, University of Swabi, Pakistan in the year 2019. Three bulb sizes of tuberose viz., large (2.5cm dia), medium (1.5cm dia) and small (1cm dia) were planted in three type of planting media viz., M1(Sandy soil+ Compost; 3:1; v/v), M2 (Sandy soil+ Humic acid; 20:1; v/v) and M3 (Sandy soil + Potting soil; 3:1; v/v) in Randomized Complete Block Design (RCBD) with 3 replications. Significant differences were found in all the agronomic and floral characteristics of tuberose for both planting medium and bulb sizes. Tallest (43.08 cm) plants, maximum number of leaves plant -1 (22.17), florets spike -1 (22.79) and number of bulblets produced plant -1 (22.03) were found in soil amended with humic acid. However, the least days (85.22) to flowering were observed in planting medium amended with potting soil and largest bulblets (2.14cm) were found in compost amended sandy soil. As far as the effect of bulb size is concerned, maximum days to flowering (97.44), plant height (43.29cm), number of leaves (24.54), number of florets (19.17), bulblets plant -1 (24.30) and bulblet diameter (2.08 cm) were produced by growing large sized bulbs.