PJB-2023-289
OPTIMIZING RICE PRODUCTION IN SINDH: UNLEASHING THE POWER OF PLANT NUTRIENTS AND WEED CONTROL FOR SUPERIOR QUALITY HARVESTS OF RICE, ORYZA SATIVA L.
REEMA VISTRO
Abstract
The current field experiments were conducted at two successive years throughout Kharif, 2017 and 2018 at Students’ Experimental Research Farm, Department of Agronomy, Sindh Agriculture University, Tandojam, Pakistan. The rice variety Shandar was transplanted on 15 May 2017, after 45 days old seedling for both years. Every plot was differentiated with a 40 cm walkway and a plot size of 5m × 4m (20m-2) with randomized complete block design. The results showed significant effects on weed, agronomic and physiological traits. The weed observations resulted minimum interactive values for weed density (m-2) was observed with F3 = NPK + Zn 160 + 80 + 80 + 6.0 kg ha-1× W1 = (No weeding), minimum fresh biomass of weed (g m-2) and weed dry biomass (g m-2) was observed with F3 = NPK + Zn 160 + 80 + 80 + 6.0 kg ha-1 ×W4 = Herbicide Machete 60 EC at 1.25 L ha-1 + Sorghum water extract at 25 L ha-1. However, minimum weed control (0.00 %) was found with F1 = No fertilizer (Control) × W1 = Weedy check (No weeding). Whereas, rice observations resulted maximum interactive values for panicle length, kernels panicle-1, seed index (1000 kernel wt. g), kermal yield (t ha-1) and protein (%) with F3 = NPK + Zn 160 + 80 + 80 + 6.0 kg ha-1× W4 = Herbicide Machete 60 EC at 1.25 L ha-1 + Sorghum water extract at 25 L ha-1 (10 DAT). The maximum kernels wt. panicle-1 (g) was recorded with F3 = NPK + Zn 160 + 80 + 80 + 6.0 kg ha-1× W3 = Sorghum water extract at 25 L ha-1 (10 DAT). However, maximum crop growth rate (gm-2 day-1) was recorded with F4 = NPK + B 160 + 80 + 80 + 1.0 kg ha-1× W3 = Sorghum water extract at 25 L ha-1 (10 DAT). The study revealed research areas to establish adequate management practices through different levels of nutrients and weed control for the enhancement of quality Paddy (rice) production.
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