Browsing by Author "Mkocha, Magdalene Nelson Enock"

Now showing 1 - 1 of 1

Integrated management of perennial wild rices in lowland irrigated rice
(Sokoine University of Agriculture, 1999) Mkocha, Magdalene Nelson Enock
Two field experiments were conducted during the season 1997/98 at Kapunga Rice Irrigation Project (KRIP) in Mbeya region to determine the influence of perennial wild rices on rice yields and to evaluate effectiveness of ploughing depths, hand weeding, herbicides and seeding rates in the control of the wild rices and other weeds. Experiment 1 was a split plot in a randomized complete block design with three replications. Ploughing depths (10, 15, 20, and 25 cm) constituted the main plots while the seeding rates (110, 130, 150, 170 kg ha'1) were the subplots. Pregerminated IR 54 paddy seeds were sown on 13 Februaiy 1998. Data collected included wild rice fresh and dry biomass before and after treatments, plant height at booting and at maturity, number of tillers, and panicles per plant and per square metre, number of grains per panicle, percentage ripened grains and grain yield per hectare. Combinations of 15 cm x 170 kg ha'1 (ploughing depth x seeding rates) recorded the highest grain yield of 4852.0 kg ha'1 which was significantly (P