Evaluation of Yield and Yield Components of Aerobic Fine Rice (Oryza sativah) As Influenced by Different Mulches and Planting Patterns

摘要

A field trial to evaluate the role of mulching in improving the yield of fine rice, sown in different; planting patterns was conducted at Agronomic Research Area, University of Agriculture Faisalabad Pakistan,; during 2010. The experiment was laid outin randomized complete block design (RCBD) with factorial arrangement. There were nine treatments that were replicated thrice. The net plot size was 3.0; 7.0 m. experimental treatments were comprised of no mulch, plastic mulch and wheat straw mulch, while planting patterns were 25 cm spaced single rows, 37.5 cm spaced double row strips and 62.5 cm spaced four row strips. Wheat straw mulch was used @5 t ha""1. Rice crop grown in the planting patterns of 62.5 cm spaced fourr strips with plastic mulch (P3T2) resulted in the maximum paddy yield (4.76 t ha~(-1)) due to improvement in pis height, panicle length, number of kernels per panicle and 1000-grain weight. Moreover, the maximum straw yk (8.63 t ha~(-1)), biological yield (13.41 ha~(-1)) and harvestindex (35.5%) were also given by P,T,(62.5 cmspacsl! four row strips with plastic mulch) and it was followed by P_3T_3 (62.5 cm spaced four row strips with wheat straw I mulch).