Publications by authors named "Simerjeet Virk"
Article Synopsis
- The study investigates corn biomass accumulation and nutrient uptake during the V6 growth stage, highlighting the importance of synchronizing nutrient supply with crop demand to minimize nutrient loss and improve efficiency.* -
- Corn recovery from early nutrient stress, where no fertilizer was applied initially, was assessed under varying soil moisture levels using different irrigation systems, revealing significant reductions in biomass and nutrient uptake.* -
- Results showed that early nutrient stress led to yield reductions between 1.58 to 3.4 Mg/ha, with more severe impacts (37.6-38.2% reduction) under subsurface drip irrigation due to water stress in topsoil.*
Lint yield in cotton is governed by light intercepted by the canopy (IPAR), radiation use efficiency (RUE), and harvest index (HI). However, the conventional methods of measuring these yield-governing physiological parameters are labor-intensive, time-consuming and requires destructive sampling. This study aimed to explore the use of low-cost and high-resolution UAV-based RGB and multispectral imagery 1) to estimate fraction of IPAR (IPAR), RUE, and biomass throughout the season, 2) to estimate lint yield using the cotton fiber index (CFI), and 3) to determine the potential use of biomass and lint yield models for estimating cotton HI.
View Article and Find Full Text PDFRecent advances in remote sensing technology, especially in the area of Unmanned Aerial Vehicles (UAV) and Unmanned Aerial Systems (UASs) provide opportunities for turfgrass breeders to collect more comprehensive data during early stages of selection as well as in advanced trials. The goal of this study was to assess the use of UAV-based aerial imagery on replicated turfgrass field trials. Both visual (RGB) images and multispectral images were acquired with a small UAV platform on field trials of bermudagrass ( spp.
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