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Item Effect of shade on growth, nodulation and yield of cowpea (Vigna unguiculata (L) walp)(Kerala Agricultural University, 1987) Sansamma George; Vikraman Nair, RItem Weed control in wetland rice in the high ranges of Wynad(Kerala Agricultural University, 1993) Sansamma George; Aipe, K C; Susamma P George; Pillai, G R; Balakrishna Pillai, PA field investigation was carried out at the Regional Agricultural Research Station, Ambalavayal, Wynad, Kerala for evaluating some of the herbicides for weed control in rice and also to standardise the best time of hand weeding for rice in Wynad. Four herbicides, alone and in different combinations and also two different time of hand weeding were compared. The results indicated that use of herbicides for weed control in rice was economically advantageous for the high ranges of Wynad. Though not statistically significant, hand weeding on 30th and 60th days after transplanting (DA I) was found superior to hand weeding at 20th and 40th DAT both in terms of weed control and yield.Item Performance evaluation of certain rice cultivars(Kerala Agricultural University, 1993) Susamma P George; Devadas, V S; Sansamma George; Pillai, G RExperiments were conducted with 12 rice cultivars for three consecutive years from 1984-85 to 1987-88 during kharif and rabi seasons in randomised block design. Pooled analysis of the data for kharif and rabi seasons indicated that MO 4 registered the highest grain yield in the kharif (5068 kg/ha) and rabi (4891 kg/ha) crop seasons. Hence MO 4 can be recommended for cultivation in Wynad in both the seasons. Edavaka was also found to be a promising cultivar when grain yield, straw yield and comparatively shorter duration were considered and hence requires further studies.