Interactive Application of Zinc and Herbicides Affects Broad-leaved Weeds, Nutrient Uptake, and Yield in Rice

Abstract

Due to the ability of weeds to deplete nutrients from the soil, crop plants become subjected to a complex of abiotic and biotic stresses. Thus, the interactive effects between one of the most important micronutrients, i.e., zinc (Zn) and some herbicides on weeds, rice yield and nutrient uptake were investigated. The experiment was carried out in a randomized complete block design in factorial arrangement using three replicates. Ten combinations of two Zn levels (without Zn, Zn−, and with Zn, Zn+) as well as four herbicides (halosulfuron-methyl, bentazon, azimsulfuron, pyrazosoulfuron-ethyl), and unweeded treatment were investigated. Findings clarified that application of halosulfuron-methyl herbicide whether with Zn− or Zn+ were the effective combinations for decreasing weed biomass. Halosulfuron-methyl and pyrazosoulfuron-ethyl had similar impact either with Zn− or with Zn+ resulted in minimum values of K uptake by weeds. The increases in grain yield ha −1 due to the application of halosulfuron-methyl, pyrazosoulfuron, azimsulfuron, and bentazon reached 13.4, 15.9, 21.3, and 24.8%, respectively, under Zn+ greater than Zn−. Halosulfuron-methyl x Zn+ was the promising interaction treatment for increasing P, K, and Zn uptakes by rice. Correlation coefficient showed that fertile panicle number, fertile grain number, rice N and K uptakes, weed biomass, and weed P uptake were the most closely associated traits with grain yield. Our study proved that there is a positive correlation between Zn and the applied herbicides in rice. Zn application alleviated the herbicidal pressure (abiotic stress) and decreased weed harmful impacts (biotic stress) on rice plants. Thus, it should be focused on the complementary effect between Zn and applied herbicides in breeding programs for generating new rice genotypes which are efficient in Zn utilization and tolerant to herbicides.

Effect of Potassium Silicate and Irrigation on Grain Nutrient Uptake and Water Use Efficiency of Wheat Under Calcareous Soils

“…Supplying of crop plants in appropriate quantities and forms of nutrients certainly promotes growth and development both under favorable and unfavorable conditions (Saudy et al 2018(Saudy et al , 2020bEl-Metwally and Saudy 2021b;Saudy et al 2021b). The current study proved that potassium silicate alleviated, partially at least, the hazards of drought with enhancing yield traits (Tables 1 and 2), nutrients uptake (Tables 3 and 4) and water use efficiency (Fig.…”

Breaking Dormancy and Enhancing Germination of Avena sterilis L. and Amaranthus retroflexus L. Weeds by Gibberellic Acid and Potassium Nitrate to Keep Soil and Crops Healthy

“…For instance, in cereals, reduction in yields ranging from 50-99% based on the crop specie (El-Metwally and Saudy 2009; Saudy 2013; Saudy and Mubarak 2014;Saudy et al 2021a, b). Furthermore, weeds reduced water use efficiency (El-Met-wally et al 2009;Saudy and El-Bagoury 2014;Saudy and El-Metwally 2022) and nutrient uptakes by crop plants (Saudy 2015;Saudy and Mubarak 2015;El-Metwally and Saudy 2021b). In several legume and oil crops distinctive deterioration in yield and quality were recorded owing to the presence of weeds (Aisa et al 2019;Saudy 2009; El-Metwally and Saudy 2021a; Saudy et al 2021cSaudy et al , 2022.…”

Post-Emergence Water-Dispersal Application Provides Equal Herbicidal Activity against Echinochloa crus-galli and Rice Safety as Foliar Spraying of Penoxsulam

“…To achieve better weed control efficacy, a specific field environment is required to coordinate with the herbicide application [21][22][23]; for instance, the field needs to maintain a certain water depth when applied with water-dispersal formulated herbicides, and be kept drained for foliar spraying herbicides. When water layers are kept in the field, weeds have to adapt their metabolism in order to avoid energy shortage.…”