Hassan Hassan; Anas Tawfeeq
Volume 23, Issue 2 , June 2023, , Pages 182-189
Abstract
The experiment was carried out during agricultural season 2021, to study the effect of adding two types of silicon on the vegetative growth characteristics and mineral content of mint plant grown under the salt stress. The experiment was designed using Randomized Complete Block Design RCBD as a factorial ...
Read More
The experiment was carried out during agricultural season 2021, to study the effect of adding two types of silicon on the vegetative growth characteristics and mineral content of mint plant grown under the salt stress. The experiment was designed using Randomized Complete Block Design RCBD as a factorial experiment with two factors and three replicates, each replicate contains 9 experimental units, each unit consists 3 pots. The first factor included adding two types of silicon oxide as well as the comparison (S0 control, S1 nano-silicon, and S2 normal silicon); the second factor is salt stress included adding pure NaCl in three concentrations, (N0 0 g L-1, N1 0.45 g L-1and N2 1.45 g L-1). The results of study showed that there are significant differences caused by the experiment factors in number of lateral branches, number of leaves, and total leaf area, as the treatment S2N2 outperformed significantly with highest value of branches number, leaves number, and total leaves area which were 8.60 branches plant-1, 286.80 leaves plant-1, 1211.5 cm2 plant-1 respectively compared with control S0N0 which gave the lowest values; 7.10 branches plant-1, 182.90 leaves plant-1, 643.3 cm2 plant-1 for the same traits. S2N0 treatment was significantly superior in mineral content of NPK in leaves and gave the highest percentages of N 3.30%, P 0.5550%, K 1.96% compared with S0N2 treatment with the lowest percentages of N 2.90%, P 0.4283%, K 1.81%.
Nada Wahab Ahmed; Thamer Abdullah Zahwan
Volume 22, Issue 4 , December 2022, , Pages 143-151
Abstract
The experiment was carried out in the wooden canopy of the Department of Horticulture and Landscaping – College of Agriculture – Tikrit University for the autumn season 2021 , the experiment included studying the effect of tow overlapping factors , the first being spraying with chemical fertilizer ...
Read More
The experiment was carried out in the wooden canopy of the Department of Horticulture and Landscaping – College of Agriculture – Tikrit University for the autumn season 2021 , the experiment included studying the effect of tow overlapping factors , the first being spraying with chemical fertilizer NPK ( 0 , 1.5 gm L-1 ) and the second factor included the spraying of compost tea fertilizer ( poultry manure extract ) at levels ( 0 , 50 , 100 gm L-1 ) . The experiment designed by randomized complete block design ( RCBD ) with three replicates , the results showed the superiority of plants that were sprayed with chemical and organic fertilizers over plants that were not sprayed with either of them . The superiority of spraying with chemical fertilizer NPK at the level of F1 ( 1.5 g L-1 ) in plant height cm , number of leaves leaf plant-1 , leaf area cm2 , number of flowers flower plant-1 , weight of flowers mg , as it gave the highest values reached ( 69.25 cm , 2729.37 leaf plant-1 , 792.87 cm2 , 492.99 flower plant-1 , 0.529 mg ) straight , the lowest values were for the comparison treatment . Also , the same treatment outperformed in the mineral content of the plant , the percentage of volatile oil and the active ingredients . Also , the treatment of spraying with compost tea was superior in the mentioned characteristics at the level of E2 ( 100 g L-1 ) . The results of the interaction showed that there were significant differences in which the treatment was distinguished F1E2 ( 100g L-1 poultry offal extract + 1.5 g L-1 NPK ) it gave the highest values for the traits ( plant height 71.84 cm , number of leaves 2978.30 leaf plant-1 , total leaf area 862.92 cm2 , number of flowers 525.44 flower plant-1 , weight of flowers 0.556 mg flower-1 , N 2.520% , P 0.396% , K 2.020% , volatile oil 4.52% , Cymen 13.414 mg , Myrcene 3.129 mg , Sabinen 3.319 mg ) , the comparison treatment F0E0 gave the lowest values for the mentioned traits , which amounted to ( 57.41 cm , 2179.20 leaf plant-1 , 546.54 cm2 , 428.56 flower plant-1 , 0.418 mg flower-1 , 2.346% , 0.296% , 0.997% 3.47% , 11.622 mg , 1.407 mg , 1.508 mg ) straight .
Mohamed Abdulla Ahmed
Volume 22, Issue 3 , September 2022, , Pages 93-97
Abstract
Salinity affects plant growth by causing physiological and morphological changes, which reduces its vegetative system. This appears through decreases in stem length, number of leaves, as well as lateral branches and diameter of plant organs.There are two types of salinity: soil salinity and water salinity. ...
Read More
Salinity affects plant growth by causing physiological and morphological changes, which reduces its vegetative system. This appears through decreases in stem length, number of leaves, as well as lateral branches and diameter of plant organs.There are two types of salinity: soil salinity and water salinity. Soil salinity means soil characterized by a high percentage of dissolved salts, mostly of which are chlorides, sulfates and carbonates, to a degree harmful to plant growth. If the soil contains dissolved salts in high quantities, water potential can be reduced to negative level. A distinction between salt stress and ionic stress must be noticed. The first term is used when salt concentration is so high that water potential of growing substrate drops to a significant level (05.0 - 1.0 MPa). If the decrease in water potential was slight and undetectable, the effect here is in the form of ionic stress. A simplified definition of salt stress can be given as an increase in the concentration of salt in plant cells to the degree that affects the physiological properties. This is due to a decrease in the water potential of growing substrate which negatively affects the morphological characteristics of plant. Water potential determines the water movement from the soil to the root or from one cell to another.