Growth and Yield Production of Canola as Affected by Organic and Mineral Fertilizers Application under Drought Stress Conditions

Abstract

Field experiment were carried out at the Research and Production Station of the National Research Centre, Nubaria region, Behiera Governorate, Egypt during 2019/2020 to study the effects of compost and zinc foliar application on growth and yield production of canola under drought condition. The water stress treatments (75 and 40% water holding capacity, WHC) occupied the main plots and compost treatments at the rates (0, 2, 4 and 6 ton fed-1) were allocated at random in the sub-plots with the foliar application of zinc at a rate of 0, 50 and 100 ppm. Data noticed that increase compost rate associated with increasing the SPAD red and RWC under both irrigation treatments where 75%WHC scored the highest values than 40 %WHC. Results indicated that increasing compost rates was associated with increasing of canola characters plant height, number of branch, number of pods and 1000 seeds weight as well as, seed yield, biological yield as affected by compost and zinc application rates and their interaction under normal and stress treatments. Also, data illustrated that stress tolerance indices (SSI, STI, GMP, YI, YSI, MP, TOL and HM) of canola as affected by water stress and Compost application and Zinc sulphate. Data indicated that the highest values were attained after application compost at a rate of 6.0 ton fed-1 with a foliar spray ZnSO4 at a rate of 100 ppm. Results concluded that, application of compost and zinc is important for enhancing the growth parameter and seed production of canola under water stress condition.

Biochar–manure impacts wheat and canola grain productivity, dry matter partitioning, and protein content in western Canada

“…The addition of BC has been shown to increase photosynthetic pigment concentrations, chlorophyll content, and relative water content, which could aid in regulating increased air and soil temperatures (Mansoor et al., 2020; Zhao et al., 2020), and manure addition can aid in water holding capacity and water‐use efficiency (El Sayed et al., 2021). The improvement in water usage is present in the biomass data, where the CT treatment had the lowest (1975 kg·ha −1 ) biomass compared to amended plots.…”

“…For example, Meng et al (2017) found that average yields decreased by 0.6% for canola and spring wheat when there was a 20% increase in the number of days with high temperatures. Abiotic water and salt stress can also impact canola oil quantity and quality (El Sayed et al, 2021;Hammac et al, 2017). Despite the high temperatures, canola had 3.2% more protein in 2020 than 2019 across western Canada (Canadian Grain Commission, 2021), suggesting further research on potential precipitation impacts in future crops.…”

Role of inorganic and organic ions in response to salt and drought stresses

“…The mutual application of compost and zinc demonstrated an increase in growth factors and seed production of canola under drought stress. Soil application of organic fertilizer led to better water holding capacity in the soil and consequently the water use efficiency, enhancing soil fertility and crop growth, while Zn +2 affects the yield (Sayed et al, 2021). Selenium (Se 4+ ) increased the net photosynthetic rate, transpirational rate, stomatal conductance and water use efficiency under water deficit stress.…”