abstract in order to evaluate the effects of rice conventional herbicides on rotational second crops (lettuce, cress, clover, canola and radish), soil microbial biomass and diversity, a field and glasshouse experiments were conducted in mazandaran province and research glasshouse of ferdowsi university of mashhad, respectively. five experiments were carried out for 5 second crop separately with...

Residue management has become a new challenge for Indian agriculture and agricultural growth, as well environmental preservation. The rice-wheat cropping system (RWCS) is predominantly followed in the Indo-Gangetic plain (IGP), resulting generating large volume of residue. Annually, India produces 620 MT crop residue, with rice wheat accounting 234 surplus 30% total. Farmers are resorting to bu...

Tillage practices significantly influences soil physical characteristics and crop productivity. The infiltration characteristics, bulk density, porosity, penetration resistance, grain yield of rice and wheat were measured under no-till without residue (NT), roto-tillage (RT), and no-till with residue i.e. happy seeder (HS) in rice-wheat cropping system in sandy loam (SL) and loamy sand (LS) soi...

The principal objective of this study was to investigate the effect of household processing, including washing and cooking on pesticide residue levels in various food samples. For this study, 31 food materials were selected and 44 pesticide residues were monitored using the “quick, easy, cheap, effective, rugged, and safe” QuEChERS extraction-based and liquid chromatographyetandem mass spectrom...

A comprehensive biogeochemistry model, DNDC, was revised to simulate crop growth and soil processes more explicitly and improve its ability to estimate methane (CH4) emission from rice paddy fields under a wide range of climatic and agronomic conditions. The revised model simulates rice growth by tracking photosynthesis, respiration, C allocation, tillering, and release of organic C and O2 from...

4-Coumarate:coenzyme A ligase (4CL) catalyzes the conversion of hydroxycinnamates into corresponding CoA esters for biosynthesis of flavonoids and lignin. In this study, five members of the 4CL gene family from rice were cloned and analyzed. Recombinant 4CL data revealed that 4-coumaric acid and ferulic acid were the two main substrates of 4CL (Os4CL1/3/4/5) for monolignol biosynthesis in rice....

This study quantifies the agronomic benefits of foraging waterfowl in winter flooded rice fields in the Sacramento Valley of California (US). Fifteen winter flooded rice fields along a 105 km long transect, each with five pairs of waterfowl exclosures and control plots were used to measure residue decomposition in spring, and weed biomass and grain yield at harvest. Experimental exclusion of wa...

A field experiment was conducted during Kharif 2019 at the Experimental Farm of Department Agronomy CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur (H.P.) to investigate effect different tillage systems and varieties on yield rice. The treatments consist three rice (HPR 1156, HPR 2656 2795) which were tested under viz., conventional tillage, minimum without residue with retention. set up ...

Abstract The effects of milling, washing, and cooking on etofenprox, flubendiamide, tebufenozide levels in brown polished rice were investigated by HPLC using a UV detector. reduction rates after milling 68.74–93.16%, 64.49–90.25%, 69.74–92.58%, respectively, 11.64–41.44%, 31.36–65.37%, 31.61–73.79%, washing rice, 30.85–82.08%, 52.13–83.05%, 43.04–83.89%, rice. residue the three pesticides decr...

Residue management in cropping systems is believed to improve soil quality. However, the effects of residue management on methane (CH4) and nitrous oxide (N2O) emissions from paddy field in Southern China have not been well researched. The emissions of CH4 and N2O were investigated in double cropping rice (Oryza sativa L.) systems with straw returning of different winter cover crops by using th...