EFFECT OF WINTER GREEN-MANURING AND NITROGEN APPLICATION AN SUMMER RICE (ORYZA-SATIVA)

A field experiment was conducted at Navasari (Gujarat), to study the e ffect of winter green-manuring an performance of summer rice (Oryza sa tiva L.) with 3 green-manures species, vir. Sesbania aculeata, Sesbani a rostrata and Crotalaria juncea, and 5 N levels of summer rice (0, 25 , 50, 75 and 100 kg/ha). Absolute and recommended dose of N (RDN 100 k g/ha) treatments were also included. Growth attributes of Summer rice, viz. leaf-area index, leaf-area duration, crop-growth rate and net as similation rate, were comparable with green-manuring of S. aculeata or C. juncea alone and RDN. Yield and yield attributes of rice with gree n-manuring of S. aculeata or C. juncea and RDN were also at par. Appli cation of N from 25-100 kg/ha along with green-manuring of S. aculeata and C, juncea: increased the growth, yield and yield parameters of ri ce with highest values at 100 kg N/ha. The performance of rice after i ncorporation of S, rostrata varied and it recorded lower growth,.:yiel d;and yield parameters than RDN.